CN102417140A - Sealing exhaust system and sealing exhaust method - Google Patents
Sealing exhaust system and sealing exhaust method Download PDFInfo
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- CN102417140A CN102417140A CN2011102310687A CN201110231068A CN102417140A CN 102417140 A CN102417140 A CN 102417140A CN 2011102310687 A CN2011102310687 A CN 2011102310687A CN 201110231068 A CN201110231068 A CN 201110231068A CN 102417140 A CN102417140 A CN 102417140A
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- annular hose
- venting
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- inflation
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Abstract
The invention provides a sealing exhaust system and a sealing exhaust method. The sealing exhaust system is arranged on a vehicle of a nuclear power station, and contains an air exhaust device for discharging thermal current from a shaft well on the ground of the nuclear power station. The sealing exhaust system contains a shield and a sealing device. The shield comprises a vertically arranged channel. A first gap is disposed between the shield and the ground. The sealing device contains an annular flexible pipe which is fixedly connected at the bottom of the shield. When the channel is positioned over the shaft well, air inflation is carried out through the annular flexible pipe so as to seal the first gap between the shield and the ground. A second gap is disposed between the annular flexible pipe and the ground after venting. The sealing exhaust system and the sealing exhaust method provided by the invention can be used to more effectively discharge heat from the shaft well of the nuclear power station, reduce the volume of the sealing device, decrease the processing difficulty and simultaneously minimize the cost and improve the sealing effect.
Description
Technical field
The present invention relates to a kind of seal venting system and sealing method for exhausting, relate in particular to a kind of seal venting system and sealing method for exhausting that is applied to nuclear station ground car.
Background technology
Because China's new forms of energy development in recent years rapidly, plan is a lot of with the nuclear station project of building.Nuclear station can produce spentnuclear fuel, have the vertical shaft that much is used to deposit var fuel pot at some nuclear station below ground, and picking and placeing all of var fuel pot can be accomplished with nuclear station ground car.Nuclear station ground car is a kind of later-model HTGR used in nuclear power station weight-lifting equipment, and the thermal current that can take vertical shaft in the exhaust system of the process ground car that takes out or put into var fuel pot away dispels the heat, and exhaust system comprises screened housing and air extractor etc.
Screened housing is the metal parts that vertically is arranged on the ground car, and screened housing has columniform passage, and the diameter of passage is substantially equal to the diameter of vertical shaft.Var fuel pot all need pass through passage in the process that from vertical shaft, proposes and put into vertical shaft, and screened housing is used for the radiation at this process shielding spentnuclear fuel.When the ground car moves on the ground, has certain clearance between screened housing and the ground.The top of screened housing has the air extractor of continuous firing, and air extractor can be taken the thermal current in the screened housing away, to carry out ventilation and heat.When local car moved to the passage that makes screened housing and is positioned at the position on the nuclear station vertical shaft just, air extractor can be extracted the thermal current in screened housing and the vertical shaft out.
In general, discharge the effect of thermal current in order to prevent the gap affects between screened housing and the ground, exhaust system also comprises sealing arrangement.Sealing arrangement is fixedly installed on the screened housing lower end; And can vertically pack up and put down; In order to the gap between closed shield cover and the ground in exhaust process, make the certain cavity of formation between screened housing and the vertical shaft, to reach the effect of better discharge thermal current.In order to prevent the sealing arrangement interfering movement, sealing arrangement is packed up in the process of ground car motion, makes to have certain interval between screened housing and the ground and can relative motion.
In the prior art, sealing arrangement is the annular solid sealing band by the up-and-down movement of mechanical drive drive, realizes the sealing function between screened housing and the ground when sealing band all puts down, and realizes keeping the function in gap when packing up.Yet, being limited to screened housing and ground-surface gap is very little, the parts that use mechanical drive to need are more, cause the volume of sealing arrangement big, complex structure, cost is high, and sealing effectiveness is poor.
Given this, this area need propose a kind of simple in structure, cost is low, the seal venting system of good sealing effect and the sealing method for exhausting, to address the above problem.
Summary of the invention
In order to address the above problem, the objective of the invention is to propose a kind of simple in structure, cost is low, the seal venting system of good sealing effect and the sealing method for exhausting.
The present invention provides a kind of seal venting system, is arranged on the nuclear station ground car, and seal venting system comprises air extractor, is used for discharging the thermal current of nuclear station below ground vertical shaft, and seal venting system also comprises:
Screened housing comprises the passage of vertical setting having first gap between screened housing and the ground;
Sealing arrangement; The annular hose that comprises the bottom surface that is fixedly connected on screened housing; Annular hose puts on the air with first gap between closed shield cover and the ground when the passage of screened housing is above vertical shaft, and annular hose has second gap after the venting and between the ground.
In an embodiment of the present invention, sealing arrangement also comprises:
Inflation unit is connected in annular hose, is used for inflating to annular hose; And
The venting unit is connected in annular hose, is used for annular hose is exitted.
In an embodiment of the present invention, sealing arrangement also comprises:
First connection pipe, an end of first connection pipe is communicated in annular hose, and the other end is connected in inflation unit; And
Second connection pipe, an end of second connection pipe is communicated in said annular hose, and the other end is connected in the venting unit.
In an embodiment of the present invention, seal venting system also comprises:
The support portion is arranged on the both sides of screened housing, and inflation unit is arranged at the support portion with the venting unit.
In an embodiment of the present invention, seal venting system also comprises the inflation detecting device, and whether the inflation detecting device has been full of gas through the pressure detection annular hose that detects annular hose.
In an embodiment of the present invention, seal venting system also comprises the venting detecting device, and whether fully the venting detecting device detects annular hose venting through the discharge quantity that detects annular hose.
In an embodiment of the present invention, the material of annular hose is that nylon, rubber or canvas etc. can be realized distending and the gas impermeable material of packing up through inflation and venting.
The present invention proposes a kind of sealing method for exhausting in addition, uses above-mentioned seal venting system to discharge the hot air in the vertical shaft, and the sealing method for exhausting may further comprise the steps:
S1: the passage of screened housing is moved to the vertical shaft top;
S2:, make first gap between annular hose closed shield cover and the ground to the annular hose inflation; And
S3: use air extractor to extract the thermal current in the vertical shaft out.
In an embodiment of the present invention, after step S3, also comprise:
S4:, make and form second gap between annular hose and the ground to the annular hose venting; And
S5: remove said screened housing from the vertical shaft top.
In an embodiment of the present invention, in step S2, be to inflate to annular hose through inflation unit.
In an embodiment of the present invention, after step S2, also comprise:
S2-1: detect annular hose by the inflation detecting device and whether be full of gas.
In an embodiment of the present invention, be annular hose to be exitted in step S4 through the venting unit.
In an embodiment of the present invention, after step S4, also comprise:
S4-1: detect whether fully venting of annular hose by the venting detecting device.
Through seal venting system provided by the invention and sealing method for exhausting, can discharge the heat in the vertical shaft of nuclear station ground more effectively.Avoid the parts of the complicacy of use mechanical drive needs, reduced the volume of sealing arrangement, reduced difficulty of processing, reduced cost simultaneously, promoted sealing effectiveness.
Description of drawings
Fig. 1 is the cross-sectional schematic of seal venting system in one embodiment of the invention, and wherein sealing arrangement is in deflated state;
Fig. 2 is the schematic top plan view of seal venting system among Fig. 1;
Fig. 3 is the cross-sectional schematic of parking stall, nuclear station ground on vertical shaft in one embodiment of the invention, and wherein sealing arrangement is in inflated condition; And
Fig. 4 is the local enlarged diagram at M place among Fig. 3.
The specific embodiment
Fig. 1 is the cross-sectional schematic of seal venting system in one embodiment of the invention, and Fig. 2 is the schematic top plan view of seal venting system among Fig. 1.In conjunction with illustrated in figures 1 and 2, seal venting system 100 of the present invention is parts of nuclear station ground car, and seal venting system 100 comprises screened housing 10, sealing arrangement 20 and air extractor (figure does not show).Screened housing 10 is provided with perpendicular to ground 200, is generally hollow circular cylinder, is processed with the shielded nucleus radiation by metallic material.Has the first gap H1 between the lower end of screened housing 10 and the ground 200.Screened housing 10 has the hollow cylindrical passage 11 that is provided with perpendicular to ground 200 equally; The var fuel pot of nuclear station can take out or put into vertical shaft 201 (see figure 3)s on nuclear station ground 200 through passage 11, and it is identical with the diameter of vertical shaft 201 that the diameter of passage 11 is preferably.Air extractor is arranged on the top of screened housing 10, and the air extractor continuous firing is used for extracting out the thermal current of passage 11 and vertical shaft 201.Sealing arrangement 20 is fixedly connected on the lower end of screened housing 10; As shown in Figure 2; Sealing arrangement 20 comprises annular hose 21; Annular hose 21 is preferably and passage 11 concentric settings, and is fixed in the bottom of screened housing 10, and the somewhat larger in diameter of the annular section of annular hose 21 is in the diameter of passage 11 and vertical shaft 201.In the present embodiment, annular hose 21 is preferably the bottom of being fixed in screened housing 10 through bolted mode, yet the present invention is not as limit.The material of annular hose 21 does not limit in the present invention, is preferably the gas impermeable material that nylon, rubber or canvas etc. can be realized distending and contraction through inflation and venting.
In the present embodiment, sealing arrangement 20 also comprises first connection pipe 22, second connection pipe 23, inflation unit 24 and venting unit 25.First connection pipe 22 and second connection pipe 23 are two pipelines of from annular hose 21, drawing, and it is communicated in annular hose 21 respectively, and are connected to inflation unit 24 and venting unit 25.The user can put on the air and exit through 25 pairs of annular hoses 21 of inflation unit 24 and venting unit.In an embodiment of the present invention, said inflation unit 24 is preferably inflation pump, and venting unit 25 is preferably air extracting pump.Above-mentioned first connection pipe 22 and second connection pipe 23 can be provided with an electromagnetic valve 26 at the end near inflation unit 24 and venting unit 25, are used to control the pneumatic work that charges and discharge of inflation unit 24 and venting unit 25.
In an embodiment of the present invention, seal venting system 100 also comprises support portion 30, is used to support screened housing 10.Inflation unit 24, venting unit 25 and electromagnetic valve 26 can be arranged on above-mentioned support portion 30.
See also Fig. 1; The ground car is in moving process; Annular hose 21 does not charge into air and is in collapsed state; Be provided with because annular hose 21 is bottoms of applying screened housing 10, have the second gap H2 between annular hose 21 under the collapsed state and the ground 200, make annular hose 21 not interfere the relative motion between screened housing 10 and the ground 200.
Shown in Figure 3 is the cross-sectional schematic of seal venting system in one embodiment of the invention, and wherein annular hose 21 is in the state that is full of gas; Fig. 4 is the local enlarged diagram at M place among Fig. 3.Like Fig. 3 and shown in Figure 4; When needs take out var fuel pot or insert var fuel pot in the vertical shaft 11 from vertical shaft 11; The ground car moves to the position that makes passage 11 be positioned at vertical shaft 201 tops just; Because the air extractor continuous firing, the thermal current in the vertical shaft 201 is discharged to the external world through passage 11 under the effect of air extractor.In order to reach the effect of better bleeding, the user can use sealing arrangement 20 that the gap between screened housing 10 and the ground 200 is sealed.Specifically; The user puts on the air through opening 24 pairs of annular hoses 21 of inflation unit, and after being full of gas, the sidewall of annular hose 21 fills up the first gap H1 between screened housing 10 and the ground 200 just; Between vertical shaft 201 and passage 11, form certain cavity; Air outside can't access passage 11 among, realized good sealing function, bring the effect of better bleeding.
After the action of taking out or inserting var fuel pot is accomplished; The ground car need move to leave the position of vertical shaft 201; The user exits through opening the 25 pairs of annular hoses 21 in venting unit; Be returned to the collapsed state among Fig. 1 at the back annular hose 21 of exitting fully, have the second gap H2 between annular hose 21 and the ground, so that the motion without let or hindrance on ground 200 of ground car.
In another embodiment of the present invention, seal venting system 100 also comprises detecting device (figure does not show), and detecting device can be the inflation detecting device or the detecting device of exitting.When detecting device is the inflation detecting device, can be arranged at the annular hose 21 or first connection pipe 22, detect annular hose 21 through the pressure that detects the annular hose 21 or first connection pipe 22 and whether be full of gas.When detecting device is the venting detecting device, can be arranged at second connection pipe 23, detect whether venting fully of annular hose 21 through detecting discharge quantity.Seal venting system 100 also can comprise inflation detecting device and venting detecting device simultaneously, thereby realizes detecting inflated condition, can detect the purpose of deflated state again, is convenient to control charge air and discharge quantity.
The present invention is same to propose a kind of sealing method for exhausting, extracts the interior thermal current of vertical shaft 201 on nuclear station ground 200 out through the seal venting system 100 on the nuclear station ground car.Seal venting system 100 of the present invention is parts of nuclear station ground car, and seal venting system 100 comprises screened housing 10, sealing arrangement 20 and air extractor (figure does not show).Screened housing 10 is provided with perpendicular to ground 200, has the first gap H1 between the lower end of screened housing 10 and the ground 200.Screened housing 10 has the hollow cylindrical passage 11 that is provided with perpendicular to ground 200 equally, and the var fuel pot of nuclear station can take out or put into the vertical shaft 201 on nuclear station ground 200 through passage 11, and it is identical with the diameter of vertical shaft 201 that the diameter of passage 11 is preferably.Air extractor is arranged on the top of screened housing 10, and the air extractor continuous firing is used for extracting out the thermal current of passage 11 and vertical shaft 201.Sealing arrangement 20 is fixedly connected on the lower end of screened housing 10; Sealing arrangement 20 comprises annular hose 21; Annular hose 21 is preferably and passage 11 concentric settings, and is fixed in the bottom of screened housing 10, and the somewhat larger in diameter of the annular section of annular hose 21 is in the diameter of passage 11 and vertical shaft 201.
Sealing method for exhausting of the present invention may further comprise the steps:
Step 1, car movably makes passage 11 in the screened housing 10 aim at the position of vertical shafts 201;
Step 2 to annular hose 21 inflations, makes the sidewall of annular hose 21 fill up first gap between screened housing 10 and the ground 200, to play sealing function;
Step 3 uses the air extractor that is positioned at passage 11 tops to extract the thermal current of vertical shaft 201 out;
Step 4 to annular hose 21 venting, makes between the annular hose 21 that is fixed in screened housing 10 bottoms and the ground 200 and forms second gap, so that the ground car can be on ground 200 moved; And
Step 5 is removed said ground car from vertical shaft 201 tops.
Seal among the embodiment of method for exhausting in the present invention, sealing arrangement 20 also comprises first connection pipe 22, second connection pipe 23, inflation unit 24 and venting unit 25.First connection pipe 22 and second connection pipe 23 are two pipelines of from annular hose 21, drawing, and it is communicated in annular hose 21 respectively, and are connected to inflation unit 24 and venting unit 25.The user can put on the air and exit through 25 pairs of annular hoses 21 of inflation unit 24 and venting unit.In an embodiment of the present invention, said inflation unit 24 is preferably inflation pump, and venting unit 25 is preferably air extracting pump.Then being through inflation pump annular hose 21 to be put on the air in the step 2, is through air extracting pump annular hose 21 to be exitted in the step 4.Above-mentioned first connection pipe 22 and second connection pipe 23 can be provided with an electromagnetic valve 26 near an end of inflation unit 24 and venting unit 25 simultaneously, are used to control the pneumatic work that charges and discharge of inflation unit 24 and venting unit 25.
Seal among the embodiment of method for exhausting in the present invention, seal venting system 100 also comprises support portion 30, is used to support screened housing 10.Inflation unit 24, venting unit 25 and electromagnetic valve 26 can be arranged on above-mentioned support portion 30.
In another embodiment of the present invention, the sealing method for exhausting also comprises through the charge air state of detecting device (figure does not show) detection annular hose 21 and the step of discharge quantity state.Detecting device can be the inflation detecting device or the detecting device of exitting.When detecting device is the inflation detecting device; Comprise the pressure that detects the annular hose 21 or first connection pipe 22 through the inflation detecting device that is arranged at the annular hose 21 or first connection pipe 22 in the step 2 of sealing method for exhausting, and then whether detection annular hose 21 has been full of gas.When detecting device is the venting detecting device, comprises the discharge quantity that detects annular hose through the venting detecting device that is arranged at second connection pipe 23 in the step 4 of sealing method for exhausting, and then detect whether venting fully of annular hose 21.Seal venting system 100 also can comprise inflation detecting device and venting detecting device simultaneously, thereby realizes detecting inflated condition, can detect the purpose of deflated state again, is convenient to control charge air and discharge quantity.
Through seal venting system provided by the invention and sealing method for exhausting, can discharge the heat in the vertical shaft of nuclear station ground more effectively.Avoid the parts of the complicacy of use mechanical drive needs, reduced the volume of sealing arrangement, reduced difficulty of processing, reduced cost simultaneously, promoted sealing effectiveness.
Though described the present invention with reference to several exemplary embodiments, should be appreciated that used term is explanation and exemplary and nonrestrictive term.Because the present invention's practical implementation and do not break away from the spirit or the essence of invention in a variety of forms; So be to be understood that; The foregoing description is not limited to any aforesaid details; And should in enclose spirit that claim limited and scope, explain widely, therefore fall into whole variations and remodeling in claim or its equivalent scope and all should be the claim of enclosing and contain.
Claims (13)
1. a seal venting system is arranged on the nuclear station ground car, and said seal venting system (100) comprises air extractor, is used for discharging the thermal current of the vertical shaft (201) of nuclear station ground (200), it is characterized in that said seal venting system (100) also comprises:
Screened housing (10) comprises the passage (11) of vertical setting having first gap between said screened housing (10) and said ground (200); And
Sealing arrangement (20); The annular hose (21) that comprises the bottom surface that is fixedly connected on said screened housing (10); Said annular hose (21) puts on the air to seal said first gap between said screened housing (10) and said ground (200) when said passage (11) is positioned at said vertical shaft (201) top, and said annular hose (21) has second gap between after the venting and said ground (200).
2. seal venting system as claimed in claim 1 is characterized in that, said sealing arrangement (20) also comprises:
Inflation unit (24) is connected in said annular hose (21), is used for inflating to said annular hose (21); And
Venting unit (25) is connected in said annular hose (21), is used for said annular hose (21) is exitted.
3. seal venting system as claimed in claim 2 is characterized in that, said sealing arrangement (20) also comprises:
First connection pipe (22), an end of said first connection pipe (22) is communicated in said annular hose (21), and the other end is connected in said inflation unit (24); And
Second connection pipe (23), an end of said second connection pipe (23) is communicated in said annular hose (21), and the other end is connected in said venting unit (25).
4. seal venting system as claimed in claim 3; It is characterized in that; Said seal venting system (100) also comprises support portion (30), and said support portion (30) are arranged on the both sides of said screened housing (10), and said inflation unit (24) and said venting unit (25) are arranged at said support portion (30).
5. seal venting system as claimed in claim 2; It is characterized in that; Said seal venting system (100) also comprises the inflation detecting device, and whether said inflation detecting device has been full of gas through the said annular hose of pressure detection (21) that detects said annular hose (21).
6. seal venting system as claimed in claim 5; It is characterized in that; Said seal venting system (100) also comprises the venting detecting device, and whether fully said venting detecting device detects said annular hose (21) venting through the discharge quantity that detects said annular hose (21).
7. seal venting system as claimed in claim 1 is characterized in that, the material of said annular hose (21) is that nylon, rubber or canvas and other can be realized distending and the gas impermeable material of packing up through inflation and venting.
8. a sealing method for exhausting is used for the described seal venting system of claim 1, it is characterized in that, may further comprise the steps:
S1: the said passage (11) of said screened housing (10) is moved to said vertical shaft (201) top;
S2:, make said annular hose (21) seal said first gap between said screened housing (10) and said ground (200) to said annular hose (21) inflation; And
S3: use said air extractor to extract the thermal current in the said vertical shaft (201) out.
9. sealing method for exhausting as claimed in claim 8 is characterized in that, after step S3, also comprises:
S4:, make and form second gap between said annular hose (21) and said ground (200) to said annular hose (21) venting; And
S5: remove said screened housing (10) from said vertical shaft (201) top.
10. sealing method for exhausting as claimed in claim 9 is characterized in that, in step S2 is to inflate to said annular hose (21) through inflation unit (24).
11. sealing method for exhausting as claimed in claim 10 is characterized in that, after step S2, also comprises:
S2-1: detect said annular hose (21) by the inflation detecting device and whether be full of gas.
12. sealing method for exhausting as claimed in claim 11 is characterized in that, in step S4 is through venting unit (25) said annular hose (21) to be exitted.
13. sealing method for exhausting as claimed in claim 12 is characterized in that, after step S4, also comprises:
S4-1: detect whether fully venting of said annular hose (21) by the venting detecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110231068 CN102417140B (en) | 2011-08-12 | 2011-08-12 | Sealing exhaust system and sealing exhaust method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110231068 CN102417140B (en) | 2011-08-12 | 2011-08-12 | Sealing exhaust system and sealing exhaust method |
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| Publication Number | Publication Date |
|---|---|
| CN102417140A true CN102417140A (en) | 2012-04-18 |
| CN102417140B CN102417140B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110231068 Active CN102417140B (en) | 2011-08-12 | 2011-08-12 | Sealing exhaust system and sealing exhaust method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2786089Y (en) * | 2005-01-06 | 2006-06-07 | 上海宝钢化工有限公司 | Airbag sealing unit |
| CN1818432A (en) * | 2005-02-07 | 2006-08-16 | 农业部规划设计研究院 | Aeration expanding pressure sealing method and sealer for flexible pipe |
| JP2008107361A (en) * | 2007-12-14 | 2008-05-08 | Mitsubishi Heavy Ind Ltd | Container for radioactive material |
| CN101837495A (en) * | 2009-12-15 | 2010-09-22 | 东莞弘隆金属制品有限公司 | Method for sealing shielding can |
-
2011
- 2011-08-12 CN CN 201110231068 patent/CN102417140B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2786089Y (en) * | 2005-01-06 | 2006-06-07 | 上海宝钢化工有限公司 | Airbag sealing unit |
| CN1818432A (en) * | 2005-02-07 | 2006-08-16 | 农业部规划设计研究院 | Aeration expanding pressure sealing method and sealer for flexible pipe |
| JP2008107361A (en) * | 2007-12-14 | 2008-05-08 | Mitsubishi Heavy Ind Ltd | Container for radioactive material |
| CN101837495A (en) * | 2009-12-15 | 2010-09-22 | 东莞弘隆金属制品有限公司 | Method for sealing shielding can |
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| Publication number | Publication date |
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| CN102417140B (en) | 2013-06-05 |
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