CN1258917A - Control rod drive water pressure apparatus - Google Patents
Control rod drive water pressure apparatus Download PDFInfo
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- CN1258917A CN1258917A CN98126549A CN98126549A CN1258917A CN 1258917 A CN1258917 A CN 1258917A CN 98126549 A CN98126549 A CN 98126549A CN 98126549 A CN98126549 A CN 98126549A CN 1258917 A CN1258917 A CN 1258917A
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- control lever
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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
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Abstract
The present invention discloses one kind of hydraulic control rod driving device. Even in the period between fast stop of reactor and the shut of fast reactor stopping valve and with great flow rate of water flowing via water distributing pipe to the control rod driving mechanism, the control rod driving device can reduce the vibration of valve ball and ensure the completeness of valve seat. During reactor stops fast, high-pressure water is supplied to the control rod driving mechanism, and the control rod is inserted fast into the non-return valve of hydraulic control rod driving device inside the reactor. The depth of flow seam is shallower than the center level of valve ball in valve seat, and there is one valve chamber between the flow seam and the valve seat.
Description
The present invention relates to that the employed control lever of the operation of control lever and control lever driving mechanism (to call CRD in the following text) drives hydraulic devices in the boiling water atomic pile.
The output of boiling water reactor control except adopting the coolant control method, also adopts control lever to insert or method for pulling out carries out, and when reactor promptly stops, urgent insertion that carrying out control lever is (hereinafter to be referred as scram.This scram is undertaken by CRD.This CRD promptly inserts control lever by drive quick introducing water under high pressure the hydraulic devices (hereinafter to be referred as HCU) from control lever.The control lever that above-mentioned CRD partly inserts or extracts with reactor core to reactor in the bottom of reactor is vertical accordingly to be provided with many, simultaneously every control lever is provided with a CRD respectively.
Fig. 7 is the system diagram that the original control lever of expression drives the formation of hydraulic devices.As shown in Figure 7, insert CRD3 in the support 2 on being installed in reactor pressure vessel bottom runner plate 1, in the downside hydraulic cylinder chamber 4 of this CRD3, supply water under high pressure rapidly the HCU6 in being contained in control lever driving hydraulic devices 5.
The device 7 that stores that is arranged in this HCU6 has:
Hold nitrogen cascade 10, it makes water in this water storage container 8, in order at the appointed time control lever 9 to be inserted in the reactor core of reactor pressure vessel, and stores the nitrogen of required pressure and volume.
Store on the device 7 at this and to be connected with scram valve 12 by pipe arrangement 11, on the other hand, the water filling pipe arrangement 13 that connects carry out branch from the way of this pipe arrangement 11 connects retaining valves 14.
Connect pump 15 by flow-stop valve 16 on this retaining valve 14, this pump 15 is through water filling pipe arrangement 13 supply water under high pressure in storing device 7.And the drain-side of scram valve 12 is carried out branch to 2 directions, and the scram pipe arrangement 17 that flow-stop valve 18 has been installed respectively is connected on the downside hydraulic cylinder chamber 4 of 2 CRD3.
Fig. 8 is the sectional drawing of the formation of the original retaining valve 14 of expression.As shown in Figure 8, retaining valve 14 has:
Valve body 22, it has the runner 22a that is connected with the water filling pipe arrangement 13 of pump 15 1 sides;
Above-mentioned control lever drives hydraulic devices 5, and scram valve 12 is in closed condition in the time of usually, comes the drainage water of self-pumping 15 to enter in the water storage container 8 by water filling pipe arrangement 13, guarantees to be the required water of scram in this water storage container 8.And, when opening scram valve 12, just the water that stores in water storage container 8 is supplied in the downside hydraulic cylinder 4 of CRD3 according to scram signal, insert CRD3 and control lever 9 hastily.
Moreover, even after the urgent insertion of CRD3 finishes, also still continue by the drainage water of water filling pipe arrangement 13, scram valve 12 and scram pipe arrangement 17, till closing scram valve 12 to CRD3 transfer pump 15.
In original control lever drives hydraulic devices 5, from scram after till close scram valve 12 during in, have the water continuation of big flow to flow in the CRD3 by water filling pipe arrangement 13.At this moment, vibrate as the valve ball 25 of the main body of retaining valve 14, collision valve seat 24 might make the valve seat performance be damaged.Therefore, also may when prophylactic repair, must carry out the sliding fit operation and be repaired, perhaps change valve body 23, may constitute the factor that prophylactic repair is carried out smoothly that influences valve seat 24.
The present invention be directed to above-mentioned situation proposes, its purpose is to provide a kind of like this control lever to drive hydraulic devices, in during it closes the scram valve after scram just finishes before, the water of big flow continues to guarantee the integrity of valve seat by also reducing the vibration of ball under the situation in the injection pipe arrangement inflow control lever driving mechanism.
In order to address the above problem, the present invention takes following technical scheme:
A kind of control lever drives hydraulic devices, it supplies to above-mentioned control lever driving mechanism to water under high pressure from hydraulic control device when the reactor scram, make control lever insert in the atomic pile fast, described hydraulic control device has: the scram pipe arrangement, and it is connected with control lever driving mechanism downside hydraulic cylinder case; Storage device, it is connected with this scram pipe arrangement, wherein stores the water yield that makes above-mentioned control lever drive mechanism; The scram valve, it is arranged on the above-mentioned scram pipe arrangement; The water filling pipe arrangement, it makes scram pipe arrangement between this scram scram valve and the said storage unit carry out branch and is connected on the water under high pressure charge pump, and retaining valve, it is arranged on this water filling pipe arrangement, and above-mentioned control lever drives hydraulic devices and is characterised in that:
Above-mentioned retaining valve has:
Bonnet, it has the runner that is connected with the water filling pipe arrangement of said storage unit side;
The 1st valve body, it has the runner that is connected with the water filling pipe arrangement of above-mentioned pump side;
The 2nd valve body, it is set between the 1st valve body and the above-mentioned bonnet, has formed the 1st valve chamber;
Valve seat, it is formed in the 2nd valve body, is positioned on the runner that the runner of the runner that makes above-mentioned bonnet and above-mentioned the 1st valve body is connected;
Valve ball, it is to be configured to be seated at this valve seat, becomes valve body;
The aperture, it is set on the runner of above-mentioned valve seat upstream side, and
The stream seam, it is formed on a dirty side of above-mentioned valve seat, is used as above-mentioned valve ball runner on every side,
The degree of depth of this stream seam is shallower than the central horizontal position of the above-mentioned valve ball when above-mentioned valve ball is seated on the above-mentioned valve seat, and above-mentioned stream stitch and above-mentioned valve seat between, be provided with the 2nd valve chamber that is used to reduce with the gap of above-mentioned valve ball.
Described control lever drives hydraulic devices, it is characterized in that:
Be provided with a plurality of one-way valve port.
Described control lever drives hydraulic devices, it is characterized in that:
Be provided with a plurality of one-way valve port, these apertures are disposed near the surrounding wall of valve chamber of valve seat upstream side.
Described control lever drives hydraulic devices, it is characterized in that:
Be provided with a plurality of one-way valve port, these apertures correspond respectively to each stream seam, are disposed on the same position on the Zhou Fangxiang of garden.
Described control lever drives hydraulic devices, it is characterized in that:
Be provided with a plurality of one-way valve port, these apertures correspond respectively to formed ball valve guide part between a plurality of stream seams, are set on the same position on the Zhou Fangxiang of garden.
The present invention is that a kind of like this control lever drives hydraulic devices, and it supplies to water under high pressure in the above-mentioned control lever driving mechanism when the reactor scram from hydraulic control device, control lever is inserted in the reactor rapidly, and above-mentioned hydraulic control device has:
The scram pipe arrangement, it is connected with the downside hydraulic cylinder chamber of control lever driving mechanism;
Storage device, it is connected with this scram pipe arrangement, wherein stores the water yield that above-mentioned control rod driving is driven;
The scram valve, it is installed on the above-mentioned scram pipe arrangement;
The water filling pipe arrangement, it makes the scram pipe arrangement between this scram valve and the said storage unit carry out branch, and is connected on the water under high pressure charge pump; And
Retaining valve, it is installed on this water filling pipe arrangement,
Above-mentioned control lever drives hydraulic devices, it is characterized in that:
Above-mentioned retaining valve has:
Bonnet, it has the runner that is connected with the water filling pipe arrangement of said storage unit one side;
The 1st valve body, it has the runner that is connected with the water filling pipe arrangement of said pump one side;
The 2nd valve body, it is arranged between the 1st valve body and the above-mentioned bonnet, forms the 1st valve chamber;
Valve seat, it is formed in the 2nd valve body, is positioned on the runner that is communicated with above-mentioned bonnet runner and above-mentioned the 1st valve flowing channel;
Valve ball, it is positioned at this valve seat top, can drop on this valve seat, becomes valve body;
The aperture is positioned on the runner of above-mentioned valve seat upstream side; And
The stream seam, it is formed on a dirty side of above-mentioned valve seat, is used as above-mentioned valve ball runner on every side,
The degree of depth of this stream seam is shallower than the central horizontal position of the above-mentioned valve ball when above-mentioned valve ball is fallen on the above-mentioned valve seat, and, above-mentioned stream stitch and above-mentioned valve seat between be provided be used to reduce and above-mentioned valve ball between the 2nd valve chamber in crack.
Described control lever drives in the hydraulic devices, is provided with the aperture of a plurality of retaining valves.
Described control lever drives in the hydraulic devices, is provided with a plurality of one-way valve port, and these apertures are disposed near the surrounding wall of valve chamber of valve seat upstream side.
Described control lever drives in the hydraulic devices, is provided with a plurality of one-way valve port, and stitch on the same position that is arranged on correspondingly on the Zhou Fangxiang of garden with a plurality of streams respectively in these apertures.
Described control lever drives in the hydraulic devices, is provided with a plurality of one-way valve port, and these apertures are respectively and on formed ball valve rail portion between a plurality of streams seams is set at same position on the Zhou Fangxiang of garden accordingly.
The effect of invention
Such as described above, if adopt the present invention, then when the reactor scram, water under high pressure is supplied in the control lever driving mechanism, make control lever be inserted into the retaining valve of this control lever driving hydraulic devices in the reactor fast, its stream seam degree of depth is shallower than the valve ball central horizontal position when valve ball drops on the valve seat, and between stream seam and valve seat, be provided with a kind of the 2nd valve chamber that gap with valve ball is dwindled, therefore, in during before after scram just finishes, closing the scram valve, the water of big flow flows through under the interior situation of water filling pipe arrangement, can make valve ball float to not with the contacted degree of valve seat, can guarantee the integrity of valve seat.
Its result can provide a kind of control lever driving hydraulic devices that makes the prophylactic repair operation rationalization of atomic power plant and improved operating reliability.
If adopt the present invention, described control lever drives in the hydraulic devices, is provided with the aperture of many retaining valves, therefore reduced the flow velocity skew of valve ball upstream side runner, below valve ball, also touch the little current of skew,, can guarantee the integrity of valve seat so can reduce the valve ball vibration.
If adopt the present invention, described control lever drives in the hydraulic devices, and the aperture of a plurality of retaining valves is set, these apertures are disposed near the surrounding wall of valve chamber of valve seat upstream side, therefore, can reduce the velocity flow profile skew around the valve ball, reduce the valve ball vibration, can guarantee the integrity of valve seat.
If adopt the present invention, described control lever drives in the hydraulic devices, the aperture of a plurality of retaining valves is set, these apertures are corresponding with a plurality of stream seams respectively, be set on the same position on the Zhou Fangxiang of garden, the flow velocity that therefore can distribute valve ball runner section on every side equably can reduce the valve ball vibration, can guarantee the integrity of valve seat.
If adopt the present invention, described control lever drives in the hydraulic devices, the aperture of a plurality of retaining valves is set, these apertures correspond respectively to formed valve ball targeting part between a plurality of stream seams, be disposed on the same position on the Zhou Fangxiang of garden, therefore, water becomes the padded coaming between valve ball and the valve ball targeting part, vibration can be reduced, the integrity of valve seat can be guaranteed.
Following with reference to accompanying drawing, describe embodiments of the invention in detail:
Fig. 1 is that expression adopts the control lever of various embodiment of the present invention to drive the system diagram of the formation of hydraulic devices.
Fig. 2 is that expression relates to the sectional drawing that control lever of the present invention drives the retaining valve of hydraulic devices the 1st embodiment.
Fig. 3 is that expression relates to the sectional drawing that control lever of the present invention drives the retaining valve of hydraulic devices the 2nd embodiment.
Fig. 4 is that expression relates to the sectional drawing that control lever of the present invention drives the retaining valve of hydraulic devices the 3rd embodiment.
Fig. 5 (A), (B) are that expression relates to sectional drawing, valve chamber planimetric map, the valve chamber planimetric map that control lever of the present invention drives the retaining valve of hydraulic devices the 4th embodiment.
Fig. 6 (A), (B) are that expression relates to sectional drawing, the clack box planimetric map that control lever of the present invention drives the retaining valve of hydraulic devices the 5th embodiment.
Fig. 7 is the system diagram that expression control lever in the past drives hydraulic devices.
Fig. 8 is the sectional drawing that expression control lever in the past drives the retaining valve of hydraulic devices.
The 1st embodiment
Below with reference to the accompanying drawings, describe embodiments of the invention in detail
Fig. 1 is that expression adopts the control lever of various embodiment of the present invention to drive the system diagram that hydraulic devices constitutes.Fig. 2 is that expression relates to the sectional drawing that control lever of the present invention drives the retaining valve of hydraulic devices the 1st embodiment.And for identical with original formation or corresponding part, the utilization symbol identical with Fig. 7 and Fig. 8 describes.
As shown in Figure 1, insert CRD3 in the support of on the bottom of reactor pressure vessel runner plate 1, being installed 2, drive hydraulic devices 5 interior set HCU6 from control lever and in the downside hydraulic cylinder case (chamber) 4 of this CRD3, supply with water under high pressure hastily.
The device 7 that stores that is arranged in this HCU6 has:
Hold nitrogen cascade 10, be used for stored nitrogen, this nitrogen can make the glassware for drinking water in the above-mentioned water storage container 8 that enough pressure and volume are arranged, and can be inserted into control lever 9 in the reactor core of reactor pressure vessel at the appointed time.
On this storage device 7, be connected with scram valve 12, on the other hand, be connected with water filling pipe arrangement 13, be connected with retaining valve 14a with this water filling pipe arrangement 13 from the branch that carries out of this pipe arrangement 11 midway by pipe arrangement 11.
This retaining valve 14a is connected with water under high pressure charge pump 15 by cut-off valve 16, and this water under high pressure charge pump 15 supplies to water under high pressure in the storage device 7 through water filling pipe arrangement 13.And 2 direction branches of the discharge side direction of scram valve 12 are connected on the downside hydraulic cylinder chamber 4 of 2 CRD3 the scram pipe arrangement 17 that cut-off valve 18 has been installed respectively.
Retaining valve 14a fixes following 3 parts with 2 fastening bolts 29 as shown in Figure 2, makes it form an integral body, and these three parts are:
The 1st valve body 22, its runner 22a is connected with the water filling pipe arrangement 13 of pump 15 1 sides; And
The 2nd valve body 23a, it is set between above-mentioned bonnet 21 and the valve body 22, has formed the 1st valve chamber 28.
Moreover retaining valve 14a has:
And in the present embodiment, the degree of depth of stream seam 27a is shallower than the central horizontal position of the valve ball 25 when valve ball 25 drops on the valve seat 24, and, between stream seam 27a and valve seat 24, be provided with valve chamber 28a, this valve chamber is used to reduce gap with valve ball 25 as the 2nd valve chamber.
The below effect of explanation the 1st embodiment.
Because the degree of depth of stream seam 27a is shallower than the central horizontal position of the valve seat 25 when valve ball 25 drops on the valve seat 24, and between stream seam 27a and valve seat 24, be provided with the valve chamber 28a that is used to reduce with the gap of valve ball 25, so, the function of retaining valve is with in the past identical, and, after scram, close before the scram valve 12 during in, the water of big flow flows through under the situation in the water filling pipe arrangement 13, water is through single hole 26, valve seat 24, valve chamber 28a and stream seam 27a flow, the hydraulic pressure that valve ball 25 is applied increases, and valve ball 25 is floated to the degree that does not contact valve seat 24.
Like this, according to the 1st embodiment, before after scram just finishes, closing scram valve 12 during in, the water of big flow flows through under the situation in the water filling pipe arrangement 13, can make valve ball 25 float to not with valve seat 24 contacted degree, so can guarantee the integrity of the face of valve seat 24.
The 2nd embodiment
Fig. 3 is that expression relates to the sectional drawing that control lever of the present invention drives the retaining valve of hydraulic devices the 2nd embodiment.And, describe for the identical symbol of part mark identical with the 1st embodiment.Following embodiment also is like this.
The 2nd embodiment has a kind of like this function of cowling panel, promptly drive among the retaining valve 14a of hydraulic devices 5 at control lever shown in Figure 1, on the runner of valve seat 24 upstream sides in valve body 23a a plurality of aperture 26a are set, constitute porous mouth 26a, utilize these many aperture 26a to come the current of valve ball 25 upstream sides are carried out rectification.
Like this, according to the 2nd embodiment, owing in valve body 23a, be provided with a plurality of aperture 26a, so the function of retaining valve is with in the past identical, and reduced the flow velocity skew of runner of the upstream side of valve ball 25, below valve ball 25, also touch the little current of side-play amount, so, the vibration of valve ball 25 can be reduced, the integrity of valve ball 24 can be guaranteed.
The 3rd embodiment
Fig. 4 is that expression relates to the sectional drawing of retaining valve that control lever of the present invention drives the 3rd embodiment of hydraulic devices.
The 3rd embodiment drives among the retaining valve 14a of hydraulic devices 5 at control lever shown in Figure 1, the runner of valve seat 24 upstream sides in the valve body 23a is provided with a plurality of aperture 26b, and simultaneously these apertures 26b is set near the surrounding wall of valve chamber 28b of valve seat 24 upstream sides.
Like this, according to the 3rd embodiment, owing to be provided with a plurality of aperture 26b near the surrounding wall of the valve chamber 28b of valve seat 24 upstream sides in valve body 23a, so, can reduce valve ball 25 velocity flow profile skew on every side, can reduce the vibration of valve ball 25, can guarantee the integrity of valve seat 24.
The 4th embodiment
Fig. 5 (A), (B) are that expression relates to sectional drawing, the valve chamber planimetric map that control lever of the present invention drives the retaining valve of hydraulic devices the 4th embodiment.
The 4th embodiment drives among the retaining valve 14a of hydraulic devices 5 at control lever shown in Figure 1, the runner of valve seat 24 upstream sides in the valve body 23a is provided with 4 aperture 26b, simultaneously, these apertures 26b is arranged on the same position on the Zhou Fangxiang of garden with 4 stream seam 27a respectively shown in Fig. 5 (B) accordingly.That is to say that each aperture 26b is disposed on the stream seam 27a consistent location of the runner section around phase place and the valve ball 25.Like this, according to the 4th embodiment, on the stream of valve seat 24 upstream sides in valve body 23a 4 aperture 26b are set, these apertures 26b is corresponding with 4 stream seam 27a respectively simultaneously, be disposed on the same position of garden Zhou Fangxiang, therefore, can carry out impartial distribution the flow velocity of the runner section around the valve ball 25, the vibration of valve ball 25 can be reduced, the integrity of valve seat 24 can be guaranteed.
The 5th embodiment
Fig. 6 (A), (B) are that expression relates to sectional drawing, the valve chamber planimetric map that control lever of the present invention drives the retaining valve of hydraulic devices the 5th embodiment.
The 5th embodiment drives among the retaining valve 14a of hydraulic devices 5 at control lever shown in Figure 1, the runner of valve seat 24 upstream sides in the valve body 23a is provided with 4 aperture 26b, simultaneously, these apertures 26b corresponds respectively to formed 4 valve ball targeting parts 30 between 4 stream seam 27a shown in Fig. 6 (B), be disposed on the same position of garden Zhou Fangxiang.That is to say that each aperture 26b is arranged on the identical position of phase place and valve ball targeting part 30.
Like this, according to the 5th embodiment, the runner of valve seat 24 upstream sides in the valve body 23a is provided with 4 aperture 26b, and simultaneously, these apertures 26b is corresponding with 4 valve ball targeting parts 30 respectively, is set on the same position on the Zhou Fangxiang of garden.Therefore, allow water to flow between valve ball 25 and the valve ball targeting part 30, water becomes the padded coaming between valve ball 25 and valve ball targeting part 30 targeting parts 30, can reduce vibration, can guarantee the integrity of valve seat 24.
Claims (5)
1. a control lever drives hydraulic devices, it supplies to above-mentioned control lever driving mechanism to water under high pressure from hydraulic control device when the reactor scram, make control lever insert in the atomic pile fast, described hydraulic control device has: the scram pipe arrangement, and it is connected with control lever driving mechanism downside hydraulic cylinder case; Storage device, it is connected with this scram pipe arrangement, wherein stores the water yield that makes above-mentioned control lever drive mechanism; The scram valve, it is arranged on the above-mentioned scram pipe arrangement; The water filling pipe arrangement, it makes scram pipe arrangement between this scram valve and the said storage unit carry out branch and is connected on the water under high pressure charge pump, and retaining valve, and it is arranged on this water filling pipe arrangement, and above-mentioned control lever drives hydraulic devices and is characterised in that:
Above-mentioned retaining valve has:
Bonnet, it has the runner that is connected with the water filling pipe arrangement of said storage unit side; The 1st valve body, it has the runner that is connected with the water filling pipe arrangement of above-mentioned pump side;
The 2nd valve body, it is set between the 1st valve body and the above-mentioned bonnet, has formed the 1st valve chamber;
Valve seat, it is formed in the 2nd valve body, is positioned on the runner that the runner of the runner that makes above-mentioned bonnet and above-mentioned the 1st valve body is connected;
Valve ball, it is to be configured to be seated at this valve seat, becomes valve body;
The aperture, it is set on the runner of above-mentioned valve seat upstream side, and
The stream seam, it is formed on a dirty side of above-mentioned valve seat, is used as above-mentioned valve ball runner on every side,
The degree of depth of this stream seam is shallower than the central horizontal position of the above-mentioned valve ball when above-mentioned valve ball is seated on the above-mentioned valve seat, and above-mentioned stream stitch and above-mentioned valve seat between, be provided with the 2nd valve chamber that is used to reduce with the gap of above-mentioned valve ball.
2. control lever as claimed in claim 1 drives hydraulic devices, it is characterized in that:
Be provided with a plurality of one-way valve port.
3. control lever as claimed in claim 1 drives hydraulic devices, it is characterized in that:
Be provided with a plurality of one-way valve port, these apertures are disposed near the surrounding wall of valve chamber of valve seat upstream side.
4. control lever as claimed in claim 1 drives hydraulic devices, it is characterized in that:
Be provided with a plurality of one-way valve port, stitch corresponding to a plurality of streams in these apertures, is disposed in respectively on the same position of garden Zhou Fangxiang.
5. control lever as claimed in claim 1 drives hydraulic devices, it is characterized in that:
Be provided with a plurality of one-way valve port, these apertures correspond respectively to formed ball valve guide part between a plurality of stream seams, are set on the same position on the Zhou Fangxiang of garden.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB981265499A CN1150565C (en) | 1998-12-25 | 1998-12-25 | Control rod drive water pressure apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB981265499A CN1150565C (en) | 1998-12-25 | 1998-12-25 | Control rod drive water pressure apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1258917A true CN1258917A (en) | 2000-07-05 |
| CN1150565C CN1150565C (en) | 2004-05-19 |
Family
ID=5229726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981265499A Expired - Fee Related CN1150565C (en) | 1998-12-25 | 1998-12-25 | Control rod drive water pressure apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1150565C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363666C (en) * | 2003-07-23 | 2008-01-23 | 法玛通Anp有限公司 | Pressure release device for application in pressurised systems in power stations |
| CN103557346A (en) * | 2012-04-17 | 2014-02-05 | 巴布科克和威尔科克斯M能量股份有限公司 | Crdm divert valve |
-
1998
- 1998-12-25 CN CNB981265499A patent/CN1150565C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363666C (en) * | 2003-07-23 | 2008-01-23 | 法玛通Anp有限公司 | Pressure release device for application in pressurised systems in power stations |
| CN103557346A (en) * | 2012-04-17 | 2014-02-05 | 巴布科克和威尔科克斯M能量股份有限公司 | Crdm divert valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1150565C (en) | 2004-05-19 |
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Granted publication date: 20040519 Termination date: 20121225 |