CN202834560U - Essential service water system throttling pore plate used for nuclear plant - Google Patents
Essential service water system throttling pore plate used for nuclear plant Download PDFInfo
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- CN202834560U CN202834560U CN 201220308232 CN201220308232U CN202834560U CN 202834560 U CN202834560 U CN 202834560U CN 201220308232 CN201220308232 CN 201220308232 CN 201220308232 U CN201220308232 U CN 201220308232U CN 202834560 U CN202834560 U CN 202834560U
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- orifice plate
- orifice
- sleeve pipe
- water system
- service water
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Abstract
The utility model discloses an essential service water system throttling pore plate used for a nuclear plant. The pore plate comprises a pore plate base body and a pore plate sleeve pipe which is arranged on the pore plate base body in a detachable mode. The pore plate sleeve pipe is arranged on the pore plate base body in the detachable mode, so when pressure drop of the pore plate sleeve pipe is gradually lowered due to the fact that the inner diameter of the pore plate sleeve pipe due to erosion and corrosion of fluids, requirements can not be met, only the pore plate sleeve pipe needs to be replaced, the whole throttling pore plate does not need to be replaced, and therefore cost is lowered and material waste is reduced.
Description
Technical field
The utility model belongs to the nuclear power technology field, and in particular, the utility model relates to a kind of essential service water system of nuclear power station restricting orifice of realizing the pipeline step-down.
Background technique
Red factory site along the river seawater is in cryogenic conditions, and component cooling water is by behind the heat exchanger, and its outlet temperature is well below limiting design value (〉=15 ℃).In order to ensure nuclear island system equipment safe and reliable operation, need to carry out the adaptation design of factory site low temperature seawater condition, its outlet temperature satisfies the limiting design value requirement (except the LOCA operating mode after making component cooling water by heat exchanger, other all operating modes should be not less than 15 ℃, are not higher than 35 ℃).
On the basis of former design proposal, analyze through demonstration, determine to adopt the method for by-pass flow heat exchanger SEC seawater effluent amount, red 1, No. 2 unit RRI/SEC heat transfer system is along the river improved, reach and regulate the purpose that heat exchanger RRI side outlet cold water temperature meets design requirement.Design and installation restricting orifice on the DN700 transverse tube after two heat exchanger exit threeways of SEC system converge is for reducing the pipeline seawater flow.
Although the restricting orifice that adopts at present is simple in structure, can reach the purpose of step-down by the internal diameter that changes runner.But in use for some time, because the washing away and corrode of fluid, the internal diameter of runner can gradually change, and the pressure drop meeting reduces gradually, when the pressure drop reduction can not meet the demands, can only change whole orifice plate, causes waste of material.
In view of this, necessaryly provide a kind of essential service water system of nuclear power station restricting orifice that reduces cost, reduces waste of material.
The model utility content
The purpose of this utility model is: a kind of essential service water system of nuclear power station restricting orifice that reduces cost, reduces waste of material is provided.
In order to realize the foregoing invention purpose, the utility model provides a kind of essential service water system of nuclear power station restricting orifice, and it comprises orifice plate matrix and the orifice plate sleeve pipe that is removably mounted on the orifice plate matrix.
As a kind of improvement of the utility model essential service water system of nuclear power station restricting orifice, described orifice plate sleeve pipe is removably mounted on the described orifice plate matrix by bolt.
A kind of improvement as the utility model essential service water system of nuclear power station restricting orifice, described orifice plate matrix is provided with depressed part, run through depressed part and be provided with several through holes, described orifice plate sleeve pipe is provided with flange, flange is provided with several mounting holes of corresponding through hole, and the through hole that described screw bolt passes is corresponding and mounting hole also are removably mounted on the orifice plate sleeve pipe on the orifice plate matrix.
As a kind of improvement of the utility model essential service water system of nuclear power station restricting orifice, the top of described orifice plate matrix is concordant with the top of orifice plate sleeve pipe.
As a kind of improvement of the utility model essential service water system of nuclear power station restricting orifice, described orifice plate matrix is provided with the first segment discharge orifice, and described orifice plate sleeve pipe is provided with the second section discharge orifice, and first segment discharge orifice and second section discharge orifice are eccentric setting.
As a kind of improvement of the utility model essential service water system of nuclear power station restricting orifice, described orifice plate matrix is provided with hanger.
As a kind of improvement of the utility model essential service water system of nuclear power station restricting orifice, the surface of described orifice plate matrix is lined with neoprene.
As a kind of improvement of the utility model essential service water system of nuclear power station restricting orifice, described orifice plate matrix is to be made by carbon steel material.
As a kind of improvement of the utility model essential service water system of nuclear power station restricting orifice, described orifice plate sleeve pipe is made by Z2CN19-10 (control nitrogen) material.
With respect to prior art, the utlity model has following advantage: at first, the orifice plate sleeve pipe is removably installed on the orifice plate matrix, when the orifice plate sleeve pipe because being subjected to washing away and corrode internal diameter and gradually changing when causing pressure drop to reduce can not meeting the demands of fluid, only needing to change the orifice plate sleeve pipe gets final product, need not to change whole restricting orifice, can reduce cost, reduce waste of material; Secondly, the first segment discharge orifice of orifice plate matrix and the second section discharge orifice of orifice plate sleeve pipe are eccentric setting, can effectively reduce the silting in the pipeline, adapt to on-the-spot pipeline condition; At last, the orifice plate matrix is the carbon steel forging and is lined with neoprene that the orifice plate sleeve pipe adopts corrosion-resistant Z2CN19-10 (control nitrogen) material, can further reduce cost.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model essential service water system of nuclear power station restricting orifice and useful technique effect thereof are elaborated, wherein:
Fig. 1 is the plan view of the utility model essential service water system of nuclear power station restricting orifice.
Fig. 2 is that essential service water system of nuclear power station restricting orifice shown in Figure 1 is along the cross-sectional schematic of A-A line.
Fig. 3 is the plan view of the orifice plate matrix of essential service water system of nuclear power station restricting orifice shown in Figure 1, and wherein, hanger and positioning plate remove.
Fig. 4 is that orifice plate matrix shown in Figure 3 is along the sectional view of B-B line.
Fig. 5 is the plan view of the orifice plate sleeve pipe of essential service water system of nuclear power station restricting orifice shown in Figure 1.
Fig. 6 is that orifice plate sleeve pipe shown in Figure 5 is along the sectional view of C-C line.
Embodiment
In order to make goal of the invention of the present utility model, technological scheme and useful technique effect more clear, below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.Should be understood that the embodiment of describing in this specification only is in order to explain the utility model, is not in order to limit the utility model.
See also illustrated in figures 1 and 2, the utility model essential service water system of nuclear power station restricting orifice comprises: orifice plate matrix 10 and the orifice plate sleeve pipe 20 that is removably mounted on the orifice plate matrix 10, wherein, orifice substrate 10 is provided with hanger 102 and positioning plate (not indicating), to make things convenient for on-site hoisting.
See also Fig. 3 and shown in Figure 4, orifice plate matrix 10 is the cylindrical body of hollow, and its central authorities are provided with first segment discharge orifice 104.The top of orifice plate matrix 10 is recessed to form columniform depressed part 106 downwards, and the central axis of the central axis of orifice plate matrix 10 and depressed part 106 is eccentric setting.The bottom interval that runs through depressed part 106 is provided with several through holes 108, and bolt 30 can correspondence be installed in the through hole 108, and orifice plate sleeve pipe 20 is removably installed on the orifice plate matrix 10.
According to a preferred implementation of the present utility model, orifice plate matrix 10 is to be formed by the carbon steel material forging, and the surface of orifice plate matrix 10 is lined with neoprene, to improve the corrosion resistance of orifice plate matrix 10.
See also Fig. 5 and shown in Figure 6, orifice plate sleeve pipe 20 is the cylindrical body of hollow, is made by Z2CN19-10 (control nitrogen) material, and the central authorities of orifice plate sleeve pipe 20 are provided with the second section discharge orifice 204 that is eccentric setting with first segment discharge orifice 104.The outer side wall that centers on orifice plate sleeve pipe 20 stretches out and is provided with mounting flange 202, mounting flange 202 is provided with several mounting holes 208 corresponding with through hole 108 on the orifice plate matrix 10, when orifice plate sleeve pipe 20 places on the orifice plate matrix 10, mounting flange 202 is supported on the depressed part 106 of orifice plate matrix 10, and mounting hole 208 is corresponding respectively with the through hole 108 of orifice plate matrix 10.
During assembling, orifice plate sleeve pipe 20 is placed the depressed part 106 of orifice plate matrix 10, orifice plate sleeve pipe 20 is supported in the bottom of the depressed part 106 of orifice plate matrix 10, and the mounting hole 208 of orifice plate sleeve pipe 20 is corresponding respectively with the through hole of orifice plate matrix 10 108.Several bolts 30 are passed respectively mounting hole 208 and through hole 108 successively, thereby orifice plate sleeve pipe 20 is removably mounted on the orifice plate matrix 10, the top of orifice plate matrix 10 is concordant with the top of orifice plate sleeve pipe 20, and first segment discharge orifice 104 and second section discharge orifice 204 are eccentric setting (staggering each other in the medial axis of first segment discharge orifice 104 and second section discharge orifice 204).
With respect to prior art, the utility model essential service water system of nuclear power station restricting orifice has following useful technique effect:
At first, orifice plate sleeve pipe 20 is removably installed on the orifice plate matrix 10, when orifice plate sleeve pipe 20 because being subjected to washing away and corrode internal diameter and gradually changing when causing pressure drop to reduce can not meeting the demands of fluid, only needing to change orifice plate sleeve pipe 20 gets final product, need not to change whole restricting orifice, can reduce cost, reduce waste of material; Secondly, the first segment discharge orifice 104 of orifice plate matrix 10 and the second section discharge orifice 204 of orifice plate sleeve pipe 20 are eccentric setting, can effectively reduce the silting in the pipeline, adapt to on-the-spot pipeline condition; At last, orifice plate matrix 10 makes for carbon steel material and the surface is lined with neoprene, and orifice plate sleeve pipe 20 adopts corrosion resistant Z2CN19-10 (control nitrogen) material, can further reduce cost.
Be understandable that, although be to be connected to example with bolt to have illustrated that the orifice plate sleeve pipe is removably installed on the orifice plate matrix in illustrated embodiment, but, according to other mode of executions of the present utility model, the orifice plate sleeve pipe also can adopt other modes to be removably installed on the orifice plate matrix, connects and riveted joint such as screw.
According to above-mentioned principle, the utility model can also carry out suitable change and modification to above-mentioned mode of execution.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this specification, these terms do not consist of any restriction to the utility model just for convenience of description.
Claims (9)
1. essential service water system of nuclear power station restricting orifice is characterized in that: described essential service water system of nuclear power station restricting orifice comprises the orifice plate matrix and is removably installed in orifice plate sleeve pipe on the orifice plate matrix.
2. essential service water system of nuclear power station restricting orifice according to claim 1, it is characterized in that: described orifice plate sleeve pipe is removably mounted on the orifice plate matrix by bolt.
3. essential service water system of nuclear power station restricting orifice according to claim 2, it is characterized in that: described orifice plate matrix is provided with depressed part, run through depressed part and be provided with several through holes, described orifice plate sleeve pipe is provided with flange, flange is provided with several mounting holes of corresponding through hole, and the through hole that described screw bolt passes is corresponding and mounting hole also are removably mounted on the orifice plate sleeve pipe on the orifice plate matrix.
4. essential service water system of nuclear power station restricting orifice according to claim 1, it is characterized in that: the top of described orifice plate matrix is concordant with the top of orifice plate sleeve pipe.
5. essential service water system of nuclear power station restricting orifice according to claim 1, it is characterized in that: described orifice plate matrix is provided with the first segment discharge orifice, and described orifice plate sleeve pipe is provided with the second section discharge orifice, and first segment discharge orifice and second section discharge orifice are eccentric setting.
6. each described essential service water system of nuclear power station restricting orifice in 5 according to claim 1, it is characterized in that: described orifice plate matrix is provided with hanger.
7. each described essential service water system of nuclear power station restricting orifice in 5 according to claim 1, it is characterized in that: the surface of described orifice plate matrix is lined with neoprene.
8. each described essential service water system of nuclear power station restricting orifice in 5 according to claim 1, it is characterized in that: described orifice plate matrix is made by carbon steel material.
9. each described essential service water system of nuclear power station restricting orifice in 5 according to claim 1, it is characterized in that: described orifice plate sleeve pipe is made by Z2CN19-10 control nitrogen material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220308232 CN202834560U (en) | 2012-06-28 | 2012-06-28 | Essential service water system throttling pore plate used for nuclear plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220308232 CN202834560U (en) | 2012-06-28 | 2012-06-28 | Essential service water system throttling pore plate used for nuclear plant |
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| Publication Number | Publication Date |
|---|---|
| CN202834560U true CN202834560U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220308232 Expired - Lifetime CN202834560U (en) | 2012-06-28 | 2012-06-28 | Essential service water system throttling pore plate used for nuclear plant |
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| CN (1) | CN202834560U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672849A (en) * | 2013-11-29 | 2014-03-26 | 中国五环工程有限公司 | Dismountable throttle orifice mechanism and mounting and dismounting tool |
| CN104807516A (en) * | 2015-03-03 | 2015-07-29 | 中国寰球工程公司 | Restriction orifice crossover flange for measuring low-temperature medium process parameters |
| CN104879600A (en) * | 2014-01-16 | 2015-09-02 | 费希尔控制国际公司 | Erosion-resistant fluid pressure reduction device |
| CN106949333A (en) * | 2017-03-31 | 2017-07-14 | 中核核电运行管理有限公司 | A kind of ceramic chamber lining throttle orifice component of sherardizing steel |
-
2012
- 2012-06-28 CN CN 201220308232 patent/CN202834560U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672849A (en) * | 2013-11-29 | 2014-03-26 | 中国五环工程有限公司 | Dismountable throttle orifice mechanism and mounting and dismounting tool |
| CN104879600A (en) * | 2014-01-16 | 2015-09-02 | 费希尔控制国际公司 | Erosion-resistant fluid pressure reduction device |
| CN104807516A (en) * | 2015-03-03 | 2015-07-29 | 中国寰球工程公司 | Restriction orifice crossover flange for measuring low-temperature medium process parameters |
| CN104807516B (en) * | 2015-03-03 | 2018-09-28 | 中国寰球工程公司 | A kind of restriction orifice crossover flange measured for cryogenic media procedure parameter |
| CN106949333A (en) * | 2017-03-31 | 2017-07-14 | 中核核电运行管理有限公司 | A kind of ceramic chamber lining throttle orifice component of sherardizing steel |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
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| CX01 | Expiry of patent term |