CN202034747U - Cable connector connecting device in control rod system containment vessel - Google Patents
Cable connector connecting device in control rod system containment vessel Download PDFInfo
- Publication number
- CN202034747U CN202034747U CN2011200685320U CN201120068532U CN202034747U CN 202034747 U CN202034747 U CN 202034747U CN 2011200685320 U CN2011200685320 U CN 2011200685320U CN 201120068532 U CN201120068532 U CN 201120068532U CN 202034747 U CN202034747 U CN 202034747U
- Authority
- CN
- China
- Prior art keywords
- cable
- vertical shaft
- cement wall
- wall vertical
- connecting device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model belongs to a connecting device for connecting a cable and a plug, particularly relating to a cable connector connecting device in a control rod system containment vessel. The cable connector connecting device comprises a cable core wire, wherein the connector of the cable core wire is encapsulated with epoxy resin, the cable core wire is arranged in a cement wall vertical shaft, a flange is fixed on the cement wall vertical shaft via a bolt, a supporting member is sleeved between the bolt and the cement wall vertical shaft. Advantage: compared with the prior art, the supporting member is mounted between the flange and the cement wall vertical shaft, a gap is formed between the flange and a hole of the cement wall vertical shaft, and steam in the hole can radiate outwardly from the gap. With the increased supporting member, the cable connector connecting device is easy in implementation and simple in structure.
Description
Technical field
The utility model belongs to the jockey of a kind of cable and plug junction, is specifically related to a kind of control rod system safety shell inner cable joint connection.
Background technology
Gulf, field nuclear power station VVER type unit has 103 bundle control rods at present, control by 103 driving mechanisms respectively, driving mechanism has lifting and following plug in control rod and measures the control rod position functions, i.e. rod control and rod position, driving mechanism provides electrical source of power by 103 7 core cables (power cable) by upper strata control rack in shell, provide rod position measurement probe power by 103 24 core cables (instrument electric control cable) by upper strata control rack in shell.
Driving mechanism is by being connected at reactor cement wall vertical shaft place with the instrument electric control cable with power in the shell from tape cable, and reactor shaft place joint is CH-38-7A/30-1 (power cable joint), CH-38-24A/30-1 (instrument electric control cable joint).Being connected as shown in Figure 1 of the cable joint at reactor shaft place and cable.Cable and joint have poured into epoxy resin at weld simultaneously and have prevented that outside steam and air from entering by being welded to connect, the protection pad.
This joint is positioned at the vertical shaft place of reactor cement wall, during the reactor operation, and reactor shaft temperature height, high humidity, and have radiation.
Through the operation of a phase in longevity, check during the overhaul and find that the situation that insulation reduces has appearred in the part cable, even the situation of operation limit value (0.5M Ω) occurs being lower than.The reason of cable insulation decline is analyzed the back find that the basic reason that causes cable insulation to descend is the epoxy resin cracking that is positioned at reactor shaft place cable joint, causes the place, contact of condensate infiltration joint.The reason that condensate occurs is that the solder joint of joint is in the hole of cement wall vertical shaft with the epoxy resin that is used to protect; steam in the reactor core condenses in hole; and hole is horizontal and joint is in the relative low spot of hole, so condensate accumulates in the joint.Because the epoxy resin cracking, condensate has entered into joint inside.This situation will influence the safe and stable operation of unit.Based on above situation, must take measures to stop insulation to drop to below the operation limit value.
Summary of the invention
The utility model provides a kind of steam that can stop to enter joint inside, guarantees that the cable joint insulation values is in the above control rod system safety shell inner cable joint connection of operation limit value.
The utility model is achieved in that control rod system safety shell inner cable joint connection, and it comprises cable core, the joint of cable core is filled with epoxy resin, the cable core that is filled with epoxy resin is installed in cement wall vertical shaft inside, flange is socketed with strutting piece by being bolted on the cement wall vertical shaft between bolt and cement wall vertical shaft.
Described strutting piece is a loop configuration.
The utility model has the advantages that: compared with prior art, increased a strutting piece between flange and cement wall vertical shaft, making has had the gap between flange and the cement wall vertical shaft hole, and the steam in the hole can outwards distribute from the gap.The joint other parts do not change.The utility model has only increased a strutting piece, implements easily, and is simple in structure.Through actual use checking, this scheme has effectively improved cable insulation, is lower than the cable of 0.5M Ω in insulation values under the former environment and has reached more than the 100M Ω after transforming.
Description of drawings
Fig. 1 is existing joint connection structure chart;
Fig. 2 is a control rod system safety shell inner cable joint connection schematic diagram provided by the utility model.
Among the figure, 1 bolt, 2 cement wall vertical shafts, 3 epoxy resin, 4 cable cores, 5 flanges, 11 strutting pieces.
Embodiment
Be described in further detail the utility model is bright below in conjunction with drawings and the specific embodiments.
As shown in Figure 2, it comprises cable core 4 control rod system safety shell inner cable joint connection, the joint of cable core 4 is filled with epoxy resin 3, the cable core 4 that is filled with epoxy resin 3 is installed in cement wall vertical shaft 2 inside, flange 5 is fixed on the cement wall vertical shaft 2 by bolt 1, is socketed with the strutting piece 11 of annular between bolt 1 and cement wall vertical shaft 2.
Compared with prior art, increased a strutting piece 11 between flange 5 and cement wall vertical shaft 2, making has had the gap between flange 5 and cement wall vertical shaft 2 holes, and the steam in the hole can outwards distribute from the gap.The joint other parts do not change.The utility model has only increased a strutting piece 11, implements easily, and is simple in structure.
Claims (2)
- Control rod system safety shell inner cable joint connection it comprise cable core (4), the joint of cable core (4) is filled with epoxy resin (3), the cable core (4) that is filled with epoxy resin (3) is installed in cement wall vertical shaft (2) inside, flange (5) is fixed on the cement wall vertical shaft (2) by bolt (1), it is characterized in that: be socketed with strutting piece (11) between bolt (1) and cement wall vertical shaft (2).
- 2. will remove 1 described control rod system safety shell inner cable joint connection as right, it is characterized in that: described strutting piece (11) is loop configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200685320U CN202034747U (en) | 2011-03-15 | 2011-03-15 | Cable connector connecting device in control rod system containment vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200685320U CN202034747U (en) | 2011-03-15 | 2011-03-15 | Cable connector connecting device in control rod system containment vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202034747U true CN202034747U (en) | 2011-11-09 |
Family
ID=44897033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200685320U Expired - Lifetime CN202034747U (en) | 2011-03-15 | 2011-03-15 | Cable connector connecting device in control rod system containment vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202034747U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009442A (en) * | 2013-02-22 | 2014-08-27 | 江苏核电有限公司 | Cable connection device in reactor containment |
| CN112490998A (en) * | 2020-12-09 | 2021-03-12 | 国网河南省电力公司孟州市供电公司 | Low-voltage insulated wire prevents down power supply protector |
-
2011
- 2011-03-15 CN CN2011200685320U patent/CN202034747U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009442A (en) * | 2013-02-22 | 2014-08-27 | 江苏核电有限公司 | Cable connection device in reactor containment |
| CN112490998A (en) * | 2020-12-09 | 2021-03-12 | 国网河南省电力公司孟州市供电公司 | Low-voltage insulated wire prevents down power supply protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111109 |