CN103680644B - The tightness system that a kind of guiding tube crossing with pressurized vessel is connected - Google Patents
The tightness system that a kind of guiding tube crossing with pressurized vessel is connected Download PDFInfo
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- CN103680644B CN103680644B CN201310629110.XA CN201310629110A CN103680644B CN 103680644 B CN103680644 B CN 103680644B CN 201310629110 A CN201310629110 A CN 201310629110A CN 103680644 B CN103680644 B CN 103680644B
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- tube body
- upstream tube
- pipe body
- lower play
- play pipe
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The present invention discloses the tightness system that a kind of guiding tube crossing with pressurized vessel is connected, comprise with pressurized vessel on guide pipeline fixing lower play pipe body, with the upstream tube body that lower play pipe body is connected, at lower play pipe body, the inside of upstream tube body is provided with the identical axial passage of diameter, the reactor core tubule extending in pressurized vessel it is inserted with in described axial passage, described reactor core tubule one end is provided with mounting flange, described upstream tube body is provided with the stationary installation of fixing aforesaid device, described reactor core tubule is provided with between axial passage sealing seal assembly, described upstream tube body is provided with the leak detector of detection leak of liquid. the present invention adopts two-part structure to facilitate setting and the installation of tightness system, dismounting and maintenance, also facilitate reactor core tubule to fix and operate simultaneously, utilize seal assembly can prevent the direct contact between above-mentioned forced section part while playing sealing, buffering, facilitate dismounting and install.
Description
Technical field
The present invention relates to a kind of tightness system, it is specifically related to the tightness system that a kind of guiding pipeline with nuclear reactor pressure container is connected.
Background technology
Reactor pressure vessel is the key parts of reactor, in the operational process of Nuclear power plants, reactor pressure vessel mainly loads the refrigerant of reactor core and High Temperature High Pressure, require the integrity that all can ensure structure under various operating mode, pressurized vessel is provided with the guiding pipeline communicated with outside, in guiding, pipeline place is provided with corresponding manual valve, and manual valve downstream is connected with the tightness system having installed reactor core tubule, bears the pressure and temperature of reactor. Reactor core tubule through guiding pipeline insertion reactor core, forms the measurement pipeline of detection instrument from tightness system inside, and tightness system is in manual valve downstream. In tightness system, seal assembly coordinates with reactor core tubule outside surface guiding the primary Ioops refrigerant in pipeline to seal. Tightness system bears mechanical load, pressure surge and thermal load etc. at the connecting portion of pressurized vessel and tightness system, easily produces stress and concentrates and destroy, causes poorly sealed. In addition as the tightness system in pressurized water reactor core neutron fluence rate measuring system, at the reactor core tubule of tightness system inside, externally extracting out by tightness system when need of work, and leakage phenomenon can not occur, tightness system is also had higher requirement by this. In addition, tightness system of the prior art is all adopt the not saturating steel of low carbon to do, and pinning phenomenon can occur between each parts under the long-time condition of high temperature, cause dismounting difficulty.
Summary of the invention
For the guiding mouth of pipe of nuclear reactor pressure container in solution prior art is poorly sealed and the problem of easily adhesion between each parts, the present invention provides between a kind of each parts can not adhesion and seal good tightness system, concrete scheme is as follows: the tightness system that a kind of guiding tube crossing with pressurized vessel is connected, comprise with pressurized vessel on guide pipeline fixing lower play pipe body, with the upstream tube body that lower play pipe body is connected, at lower play pipe body, the inside of upstream tube body is provided with the identical axial passage of diameter, the reactor core tubule extending in pressurized vessel it is inserted with in described axial passage, it is characterized in that, it is that the blind end the other end is provided with mounting flange that described reactor core tubule is positioned at pressurized vessel one end, described upstream tube body is provided with upstream tube body and lower play pipe body are fixed and mounting flange is fixed on the stationary installation of upstream pipe end simultaneously, described reactor core tubule is provided with between axial passage sealing seal assembly, described upstream tube body is provided with the leak detector instrument of detection leak of liquid.
For obtaining the parameter of pressurized vessel: liquid level interface and the pressure interface being provided with installation liquidometer and the pressure assembly communicated with axial passage respectively on described lower play pipe body.
For convenience of fixing: described stationary installation comprises the gland nut A lower play pipe body and upstream tube body being fixed together and the gland nut B that mounting flange is fixed on upstream pipe end.
For preventing mounting block from loosening: be bolted the anti-loosing slice being pressed in respectively on gland nut A and gland nut B between described gland nut A and gland nut B.
The fixing installed for improving: described upstream tube body contacts one end and is provided with the interior groove holding downstream pipe end with lower play pipe body, in lower play pipe body inserts, behind the termination of groove, side is provided with the stationary platen that diameter is greater than interior groove, and lower play pipe body and upstream tube body are fixed after being stuck on stationary platen by described gland nut A.
For improving the sealing effect of connection piece: in the insertion of described lower play pipe body, the termination of groove is provided with three groups of radial seal groove with interior groove inner wall sealing, is provided with sealing member in described radial seal groove.
For avoiding adhesion between metal parts: between gland nut A and stationary platen, between gland nut B and mounting flange and be provided with gasket seal between mounting flange and upstream tube body.
For improving the sealing effect of axial passage: described lower play pipe body contacts one end with upstream tube body and lower play pipe body contacts the seal channel that one end is provided with diameter and is greater than axial passage with mounting flange, described tightness system comprises two sections of independent sealed assemblies, two sections of independent sealed assemblies lay respectively on the reactor core tubule at two sections of seal channel places, the arranged outside being positioned at the independent sealed assembly in lower play pipe body place has metal semi-ring, between the independent sealed assembly and mounting flange of upstream tube body, gland nut is installed, described leak detector is arranged between two sections of independent sealed assemblies.
Leakage situation for convenience of monitoring tightness system: improve described leak detector and comprise two absolute electrodes being arranged on top, and the warning circuit reported to the police after two electrodes are connected, two electrodes are positioned at axial passage.
Whether above-mentioned parts are fixed together by the present invention by stationary installation, are prevented the leakage of liquid in axial passage by tightness system, utilize leak detector to monitor at any time in axial passage simultaneously and leak. The present invention adopts two-part structure to facilitate setting and the installation of tightness system, dismounting and maintenance, also facilitate reactor core tubule to fix and operate simultaneously, utilize gasket seal can prevent the direct contact between above-mentioned forced section part while playing sealing, buffering, facilitate dismounting and install.
Accompanying drawing explanation
The structural representation of Fig. 1 the present invention;
A-A schematic diagram in Fig. 2 Fig. 1;
Attached number in the figure illustrates: groove, 3-axial passage, 4-reactor core tubule, 401-mounting flange, the independent sealed assembly of 402-, 403-metal semi-ring, 404-gland nut, 5-gasket seal, 6-liquid level interface, 7-pressure interface, 8-leak detector, locking piece of 9-in play pipe body, 101-stationary platen, 102-radial seal groove, 2-upstream tube body, 201-gland nut A, 202-gland nut B, 203-bolt, 204-anti-loosing slice, 205-under 1-.
Embodiment
As shown in Figure 1, the tightness system of the present invention, comprise with pressurized vessel on guide pipeline fixing lower play pipe body 1, with the upstream tube body 2 that lower play pipe body 1 is connected, at lower play pipe body 1, the inside of upstream tube body 2 is provided with the identical axial passage of diameter 3, the reactor core tubule 4 extending in pressurized vessel it is inserted with in described axial passage 3, it is that the blind end the other end is provided with mounting flange 401 that described reactor core tubule 4 is positioned at pressurized vessel one end, described upstream tube body 2 is provided with upstream tube body 2 and lower play pipe body 1 are fixed and mounting flange 401 is fixed on the stationary installation of upstream tube body 2 termination simultaneously, described reactor core tubule 4 is provided with between axial passage 3 sealing seal assembly, described upstream tube body 2 is provided with the leak detector 8 of detection leak of liquid.
The exterior guiding pipeline place that the tightness system of the present invention is offered at pressurized vessel seals, the leakage of pressurized vessel should be prevented, need to prevent the leakage of tightness system inside simultaneously, the reactor core tubule 4 being positioned at axial passage 3 needs to take out in suitable, will be stable when not needing be arranged in axial passage 3, it is thus desirable to ensure the sealing between reactor core tubule 4 and axial passage 3, above-mentioned parts are fixed together by the present invention by stationary installation, the leakage of liquid in axial passage is prevented by tightness system, utilize leak detector 8 to monitor in axial passage at any time whether to leak simultaneously. the present invention adopts two-part structure to facilitate setting and the installation of tightness system, and dismounting and maintenance, also facilitate reactor core tubule to fix and operate simultaneously,
For improving the utilization ratio of tightness system, the present invention is provided with liquid level interface 6 and the pressure interface 7 of installation liquidometer and the pressure assembly communicated respectively with axial passage 3 on described lower play pipe body 1. The relevant parameter of pressurized vessel can be obtained in the axial passage communicated with pressurized vessel by liquid level interface 6 and pressure interface 7.
For improving the fixed effect of tightness system, the described stationary installation of the present invention comprises the gland nut A201 lower play pipe body 1 and upstream tube body 2 being fixed together and the gland nut B202 that mounting flange 401 is fixed on upstream pipe end. The two ends being arranged on upstream tube body 2 that gland nut A201 is relative with gland nut B202, utilize screw thread to be fixed together by corresponding parts. For improving fixed effect, the present invention is bolted the anti-loosing slice 204 being pressed in respectively on gland nut A201 and gland nut B202 between described gland nut A201 and gland nut B202. The degree of tightness to bolt is utilized to control, it is achieved anti-loosing slice 204, to the fixed effect of gland nut A201 and gland nut B202, prevents gland nut A201 and the rotation of gland nut B202.
For improving strength of joint, contact one end at described upstream tube body 2 with lower play pipe body 1 and it is provided with the interior groove 205 holding downstream pipe end, insert the termination of interior groove 205 at lower play pipe body 1 after, side is provided with the stationary platen 101 that diameter is greater than interior groove, and lower play pipe body 1 is fixed after being stuck on stationary platen 101 by described gland nut A201 with upstream tube body 2. In utilizing, groove 205 makes lower play pipe body 1 and upstream tube body 2 be fastened togather, it is possible to improves and prevents upstream tube body 2 from moving, and stationary platen 205 can provide support a little for gland nut A201 simultaneously. For preventing upstream tube body 2 from leaking with the junction of lower play pipe body 1, the present invention inserts at described lower play pipe body 1 and is provided with on the termination of interior groove 205 and the radial seal groove 102 of interior groove inner wall sealing, is provided with sealing member in described radial seal groove 102. Concrete radial seal groove 102 can arrange many roads as required, is provided with three roads in this scheme.
For preventing from producing after Long contact time between metal parts adhesion, the present invention is between gland nut A201 and stationary platen 101, between gland nut B202 and mounting flange 401 and is provided with gasket seal 5 between mounting flange 401 and upstream tube body 2. Gasket seal 5 can prevent the direct contact between above-mentioned forced section part while playing sealing, buffering, facilitates dismounting and installs.
For the sealing effect improved in axial passage, lower play pipe body 1 of the present invention contacts one end with upstream tube body 2 and lower play pipe body 1 contacts the seal channel that one end is provided with diameter and is greater than axial passage 3 with mounting flange 401, described tightness system comprises two sections of independent sealed assemblies 402, two sections of independent sealed assemblies 402 lay respectively on the reactor core tubule 4 at two sections of seal channel places, the arranged outside being positioned at the independent sealed assembly 402 in lower play pipe body 1 place has metal semi-ring 403, between the independent sealed assembly 402 and mounting flange 401 of upstream tube body 2, gland nut 404 is installed, said structure makes the present invention have better stopping property and install more simple and convenient. described leak detector 8 is arranged between two sections of independent sealed assemblies 402. the independent sealed assembly that the present invention is arranged respectively by two sections, two seals is formed in axial passage 3, improve sealing effect, when the independent sealed assembly of first there occurs leakage, liquid enters in the axial passage of upstream tube body, then can be detected by leak detector, thus send corresponding warning. metal semi-ring 403 wherein can squeeze tightly adjacent independent sealed assembly under the pressure of clamping nut A201, make the sealing more remarkable effect between axial passage 3, equally, the effect of gland nut 404 is also be squeezed between axial passage 3 and reactor core tubule 4 more closely by adjacent independent sealed assembly under the pressure of clamping nut B202, it is to increase stopping property. concrete leak detector 8 comprises two absolute electrodes being arranged on top, and the warning circuit reported to the police after two electrodes are connected, and two electrodes are positioned at axial passage. separating between electrode and warning circuit, when occurring to leak, two absolute electrodes can link together by liquid, thus conducting warning circuit sends alarm message. in order to Leakage prevention detection instrument loosens, the present invention utilizes bolt to fix one locking piece 9 in the outside of leak detector, with fixing and adjustment leak detector 8.
The above is only the better embodiment of the present invention, not the present invention is done any restriction in form, although the present invention with described in better embodiment as above, but and be not used to limit the present invention, any technician being familiar with this patent is not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned prompting can be utilized or it is modified to the equivalent embodiment of equivalent variations, in every case it is the content not departing from technical solution of the present invention, the any simple modification above embodiment done according to the technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of the present invention program.
Claims (7)
1. the tightness system being connected with the guiding tube crossing of pressurized vessel, comprise with pressurized vessel on guide pipeline fixing lower play pipe body (1), with the upstream tube body (2) that lower play pipe body (1) is connected, lower play pipe body (1), the inside of upstream tube body (2) is provided with the identical axial passage of diameter (3), the reactor core tubule (4) extending in pressurized vessel it is inserted with in described axial passage (3), it is characterized in that, it is blind end that described reactor core tubule (4) is positioned at pressurized vessel one end, the other end is provided with mounting flange (401), described upstream tube body (2) is provided with the stationary installation that upstream tube body (2) is fixed with lower play pipe body (1) and is fixed on by mounting flange (401) simultaneously upstream tube body (2) termination, described reactor core tubule (4) is provided with between axial passage (3) sealing seal assembly, described upstream tube body (2) is provided with the leak detector (8) of detection leak of liquid, described lower play pipe body (1) contacts one end with upstream tube body (2) and lower play pipe body (1) contacts the seal channel that one end is provided with diameter and is greater than axial passage (3) with mounting flange (401), described seal assembly comprises two sections of independent sealed assemblies (402), two sections of independent sealed assemblies (402) lay respectively on the reactor core tubule (4) at two sections of seal channel places, the arranged outside being positioned at the independent sealed assembly in lower play pipe body (1) place (402) has metal semi-ring (403), it is positioned between the independent sealed assembly of upstream tube body (2) and mounting flange (401) and gland nut (404) is installed, described leak detector (8) is arranged between two sections of independent sealed assemblies (402), described leak detector (8) comprises two absolute electrodes being arranged on top, and the warning circuit of warning after two electrodes are connected, two electrodes are positioned at axial passage, also comprise locking piece (9) of fixing leak detector (8), locking piece described (9) are " L " shape structure, " L " shape structure while near the sidewall of leak detector (8), the other side is threaded connection and is fixed on upstream tube body.
2. tightness system as claimed in claim 1, it is characterized in that, described lower play pipe body (1) is provided with liquid level interface (6) and the pressure interface (7) of the installation liquidometer communicated with axial passage (3) respectively and pressure assembly.
3. tightness system as claimed in claim 1, it is characterized in that, described stationary installation comprises gland nut A (201) lower play pipe body (1) and upstream tube body (2) being fixed together and gland nut B (202) that mounting flange (401) is fixed on upstream pipe end.
4. tightness system as claimed in claim 3, it is characterized in that, between described gland nut A (201) and gland nut B (202), it is bolted the anti-loosing slice (204) being pressed in respectively on gland nut A (201) and gland nut B (202).
5. tightness system as claimed in claim 3, it is characterized in that, described upstream tube body (2) contacts one end and is provided with the interior groove (205) holding downstream pipe end with lower play pipe body (1), in the insertion of lower play pipe body (1), behind the termination of groove (205), side is provided with the stationary platen (101) that diameter is greater than interior groove (205), described gland nut A (201) be stuck in stationary platen (101) upper after by fixing to lower play pipe body (1) and upstream tube body (2).
6. tightness system as claimed in claim 5, it is characterized in that, in the insertion of described lower play pipe body (1), the termination of groove (205) is provided with three groups of radial seal groove (102) with interior groove inner wall sealing, sealing member is installed in described radial seal groove (102).
7. tightness system as claimed in claim 3, it is characterized in that, between gland nut A (201) and stationary platen (101), between gland nut B (202) and mounting flange (401) and gasket seal (5) is installed between mounting flange (401) and upstream tube body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310629110.XA CN103680644B (en) | 2013-11-29 | 2013-11-29 | The tightness system that a kind of guiding tube crossing with pressurized vessel is connected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310629110.XA CN103680644B (en) | 2013-11-29 | 2013-11-29 | The tightness system that a kind of guiding tube crossing with pressurized vessel is connected |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103680644A CN103680644A (en) | 2014-03-26 |
| CN103680644B true CN103680644B (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310629110.XA Active CN103680644B (en) | 2013-11-29 | 2013-11-29 | The tightness system that a kind of guiding tube crossing with pressurized vessel is connected |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111667931A (en) * | 2020-05-08 | 2020-09-15 | 福建福清核电有限公司 | Reactor pressure vessel neutron flux measurement channel seal assembly and replacement method thereof |
| CN112349438A (en) * | 2020-11-06 | 2021-02-09 | 重庆大学 | Online monitoring method for sealing state of O-shaped sealing ring of nuclear reactor pressure vessel |
| CN113782237B (en) * | 2021-08-03 | 2024-03-29 | 中广核核电运营有限公司 | Maintenance method for seal section of reactor core measurement system |
| CN114252196A (en) * | 2022-03-02 | 2022-03-29 | 武汉飞恩微电子有限公司 | Automatic calibration equipment for pressure sensor for vehicle |
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| EP0393367A1 (en) * | 1989-04-19 | 1990-10-24 | Westinghouse Electric Corporation | Improved high pressure thimble/guide tube seal fitting with built-in low pressure seal especially suitable for facilitated and more efficient nuclear reactor refueling service |
| CN1098547A (en) * | 1993-02-26 | 1995-02-08 | 法玛通公司 | Nuclear reactor vessel cap instrumentation column leak-proof device |
| US5426676A (en) * | 1993-10-22 | 1995-06-20 | Westinghouse Electric Corporation | Extrusion-resistant seal assembly |
| CN1146606A (en) * | 1995-06-30 | 1997-04-02 | 法玛通公司 | Device for measuring at least one physical parameter in core of nuclear reactor |
| CN1300434A (en) * | 1998-05-11 | 2001-06-20 | Ce核电力有限公司 | Canopy seal clamp assembly and method of installation |
| CN101692353A (en) * | 2009-09-30 | 2010-04-07 | 马志刚 | Leakage-detectable constant-stress sealing gasket |
| CN103400614A (en) * | 2013-07-31 | 2013-11-20 | 中国核动力研究设计院 | Self-tightening sealing structure for single detector |
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2013
- 2013-11-29 CN CN201310629110.XA patent/CN103680644B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0393367A1 (en) * | 1989-04-19 | 1990-10-24 | Westinghouse Electric Corporation | Improved high pressure thimble/guide tube seal fitting with built-in low pressure seal especially suitable for facilitated and more efficient nuclear reactor refueling service |
| CN1098547A (en) * | 1993-02-26 | 1995-02-08 | 法玛通公司 | Nuclear reactor vessel cap instrumentation column leak-proof device |
| US5426676A (en) * | 1993-10-22 | 1995-06-20 | Westinghouse Electric Corporation | Extrusion-resistant seal assembly |
| CN1146606A (en) * | 1995-06-30 | 1997-04-02 | 法玛通公司 | Device for measuring at least one physical parameter in core of nuclear reactor |
| CN1300434A (en) * | 1998-05-11 | 2001-06-20 | Ce核电力有限公司 | Canopy seal clamp assembly and method of installation |
| CN101692353A (en) * | 2009-09-30 | 2010-04-07 | 马志刚 | Leakage-detectable constant-stress sealing gasket |
| CN103400614A (en) * | 2013-07-31 | 2013-11-20 | 中国核动力研究设计院 | Self-tightening sealing structure for single detector |
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| CN103680644A (en) | 2014-03-26 |
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