CN206786220U - A kind of wear resistant filler lining throttle orifice component of sherardizing steel - Google Patents
A kind of wear resistant filler lining throttle orifice component of sherardizing steel Download PDFInfo
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- CN206786220U CN206786220U CN201720333109.6U CN201720333109U CN206786220U CN 206786220 U CN206786220 U CN 206786220U CN 201720333109 U CN201720333109 U CN 201720333109U CN 206786220 U CN206786220 U CN 206786220U
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Abstract
The utility model belongs to nuclear power station design and running technology field, more particularly to a kind of wear resistant filler lining throttle orifice component of sherardizing steel, purpose is to provide a kind of throttle orifice component of sherardizing steel, the problem of avoiding restricting orifice and its downstream line erosion corrosion from being thinned is realized by the optimization design of the structure and material of device to hole board component, and orifice plate component is easy to processing and installation, ensure nuclear power plant's pressure line safe and reliable operation.It is characterized in that：It includes orifice plate upstream components, hard filler liner and orifice plate components downstream；The left end of orifice plate upstream components is fixedly connected with upstream line, and right-hand member is fixedly connected with the left end of orifice plate components downstream；Hard filler liner is fixed on the inside of orifice plate components downstream, positioned at the right side of orifice plate upstream components；The right-hand member of orifice plate components downstream is fixedly connected with downstream line.The orifice plate block analysis of the utility model exploitation is accurate, reasonable in design, safe and reliable, can effectively alleviate erosion corrosion and be thinned.
Description
Technical field
The utility model belongs to nuclear power station design and running technology field, and in particular to a kind of the wear-resisting of sherardizing steel is filled out
Expect lining throttle orifice component.
Background technology
Erosion corrosion is one of main failure mechanism of nuclear power plant's secondary circuit high-temperature and pressure pipeline, nuclear power plant in world wide
Pipeline cut event existing more than 300 rises caused by secondary circuit corrosion degrades, had a strong impact on npp safety, stably, economic fortune
OK, or even the tragedy that more people are dead, severely injured is caused；
The major influence factors of erosion corrosion are material, medium phase, hydrodynamics etc., in spies such as material, medium phases
In the case that sign determines, the erosion corrosion of nuclear power plant's secondary circuit pipeline is mainly special with the partial fluid mechanics of conduit component inner surface
Property is relevant, and local velocity is faster, easier generation erosion corrosion.
Because upstream and downstream pressure difference is big, the regional area flow velocity of restricting orifice downstream pipeline section inwall is higher, is that nuclear power plant two is returned
The sensitive position (as shown in Figure 1) of road pipe flushing corrosion thinning, at present, domestic nuclear power plant existing more than 10 is risen due to restricting orifice
Pipeline cut event caused by pipeline section serious erosion corrosion in downstream is thinned, causes nuclear power generating sets non-programmed halt to drop power, sternly
Safe and stable, the economical operation of nuclear power plant are have impact on again.
At present, mainly changed for restricting orifice and its downstream pipeline section erosion corrosion problem according to original design,
Existing subject matter is as follows：
1st, designed according to original after changing orifice plate and downstream line, erosion corrosion problem still can occur in follow-up operation, it is necessary to
Regular tracking and supervising, and pipeline missing inspection and risk of leakage be present, add management cost and operation risk.
2nd, designed according to original after changing orifice plate and downstream line, add one of Sizing In Butt Welded Pipes or twice socket weld
Mouthful, the increase of welding point quantity has declined pipeline reliability, also accordingly adds management cost and operation risk.
3rd, the coverage of orifice plate downstream erosion corrosion is not known, the downstream pipeline section for blindly changing restricting orifice may be not complete
The influence area of all standing erosion corrosion.
For the erosion corrosion problem of nuclear power plant's secondary circuit pipeline restricting orifice and its downstream line, it is necessary to pass through fluid force
Credit analysis and actual condition checking, the coverage of erosion corrosion is specified, design and develop simple in construction, processing install convenient, fortune
The throttle orifice component of the reliable sherardizing steel of row.
Utility model content
The purpose of this utility model is to provide a kind of throttle orifice component of sherardizing steel, passes through device to hole board component
The optimization design of structure and material realizes the problem of avoiding restricting orifice and its downstream line erosion corrosion from being thinned, and makes orifice plate group
Part is easy to processing and installation, ensures nuclear power plant's pressure line safe and reliable operation.
What the utility model was realized in：
A kind of wear resistant filler lining throttle orifice component of sherardizing steel, including in orifice plate upstream components, hard filler
Lining and orifice plate components downstream；The left end of orifice plate upstream components is fixedly connected with upstream line, right-hand member and a left side for orifice plate components downstream
End is fixedly connected；Hard filler liner is fixed on the inside of orifice plate components downstream, positioned at the right side of orifice plate upstream components；Under orifice plate
The right-hand member of trip part is fixedly connected with downstream line.
Orifice plate upstream components generally cylindrical, left side as described above offers three successively from left to right vertically
Individual circular hole, the internal diameter of three circular holes are sequentially reduced；The internal diameter and the external diameter phase of upstream line of orifice plate upstream components left part circular hole
Match somebody with somebody, the internal diameter of middle part circular hole is less than the internal diameter of upstream line；Orifice plate upstream components are for receiving the liquid of upstream line outflow simultaneously
Liquid is pressurized.
The generally hollow cylindrical of hard filler liner as described above, is coaxially disposed with orifice plate upstream components, left
End is in close contact with orifice plate upstream components；The internal diameter of hard filler liner is equal with the internal diameter of upstream line and downstream line；Firmly
Matter filler liner is used to bear the erosion corrosion by liquid, reduces structural damage of the liquid to downstream line.
Orifice plate components downstream as described above generally cylindrical, respectively with orifice plate upstream components and hard filler liner
It is coaxially disposed；Orifice plate components downstream left side offers two circular holes successively from left to right vertically, the internal diameters of two circular holes according to
Secondary reduction；The internal diameter and the external diameter of orifice plate upstream components of orifice plate components downstream left part circular hole match, the internal diameter of right part circular hole with
The external diameter of hard filler liner matches；The right part of right part circular hole is provided with round ring boss, the left end and hard filler of boss
Liner is in close contact, and right-hand member and the downstream line of boss are in close contact；Orifice plate components downstream is used for fixed orifice plate upstream components, hard
Matter filler liner and downstream line.
The left end of orifice plate upstream components as described above is connected with the outer surface of upstream line by socket weld, forms upstream
Socket joint weld bond；The outer surface of orifice plate upstream components is connected with the left end of orifice plate components downstream by socket weld, forms orifice plate component
Socket joint weld bond；The right-hand member of orifice plate components downstream is connected with the outer surface of downstream line by socket weld, forms downstream socket joint weld bond；
Hard filler liner is coated in orifice plate components downstream.
The axial distance of the supreme play pipe road right-hand member of upstream socket joint weld bond as described above is 0.5 times of upstream line internal diameter；
The axial distance of upstream socket joint weld bond to orifice plate component socket joint weld bond is 2 times of upstream line internal diameter；Orifice plate component socket joint weld bond
Axial distance to orifice plate upstream components right-hand member is 0.5 times of upstream line internal diameter；The axial length of hard filler liner is upper
Swim internal diameter of the pipeline 2.5 times；The axial length of orifice plate components downstream round ring boss is 3mm；Orifice plate components downstream annular is convex
The axial distance of the right-hand member of platform to downstream socket joint weld bond is 0.5 times of upstream line internal diameter.
Orifice plate upstream components and orifice plate components downstream as described above are made of 304L stainless steel materials；Hard filler
Liner is made of high solid epoxidic coated filler.
The outer surface roughness of orifice plate upstream components and orifice plate components downstream as described above is 1.6 μm, and other surfaces are thick
3.2 μm of rugosity.
The thickness of hard filler liner as described above is more than or equal to 2mm.
The thickness of upstream as described above socket joint weld bond, orifice plate component socket joint weld bond and downstream socket joint weld bond is all higher than 1.2
The wall thickness of upstream line again.
The beneficial effects of the utility model are：
The utility model is applied to single hole throttle orifice plate of the aperture ratio between 2.25 to 6 on DN50 and following size pipeline
The sherardizing steel application of pipeline section.Utilize national energy nuclear power station life assessment and administrative skill research and development centre nuclear power station secondary loop
Material evaluation experiment porch, which has been carried out, obtains checking test under simulation nuclear power plant secondary circuit actual condition, experiment proves that, this practicality
New hydrodynamics numerical simulation conclusion is reliable, orifice plate design and hard filler are from proper.
The orifice plate component of the utility model exploitation is through 6 years 3 overhaul weeks such as the nuclear power plant's high pressure cylinder hydrophobic pipelines of Qinshan the 3rd
The application of phase, verified by device to hole board component and its grand microscopic appearance inspection of upstream and downstream pipe segment inner surface, the art of this patent exploitation
Orifice plate block analysis it is accurate, reasonable in design, safe and reliable, can effectively alleviate erosion corrosion and be thinned.
Brief description of the drawings
Fig. 1 is the easy original orifice plate pipe segment structure that erosion corrosion occurs；
Fig. 2 is a kind of structural representation of the wear resistant filler lining throttle orifice component of sherardizing steel of the present utility model
Figure；
Fig. 3 is that a kind of critical size of the wear resistant filler lining throttle orifice component of sherardizing steel of the present utility model shows
It is intended to.
Wherein：1. orifice plate upstream components, 2. hard filler liners, 3. orifice plate components downstreams, 4. upstream lines, 5. downstream tubes
Road, 6. upstream socket joint weld bonds, 7. orifice plate component socket joint weld bonds, 8. downstream socket joint weld bonds, 9. former restricting orifices, 10. erosion corrosions
Sensitizing range.
Embodiment
The utility model is described further with reference to the accompanying drawings and examples.
As shown in Fig. 2 a kind of wear resistant filler lining throttle orifice component of sherardizing steel, including orifice plate upstream components 1,
Hard filler liner 2 and orifice plate components downstream 3.The left end of orifice plate upstream components 1 is fixedly connected with upstream line 4, right-hand member and hole
The left end of plate components downstream 3 is fixedly connected.Hard filler liner 2 is fixed on the inside of orifice plate components downstream 3, positioned at orifice plate upstream
The right side of part 1.The right-hand member of orifice plate components downstream 3 is fixedly connected with downstream line 5.
The generally cylindrical of orifice plate upstream components 1, left side offer three circular holes successively from left to right vertically, and three
The internal diameter of individual circular hole is sequentially reduced.The internal diameter and the external diameter of upstream line 4 of the left part circular hole of orifice plate upstream components 1 match, middle part
The internal diameter of circular hole is less than the internal diameter of upstream line 4.Orifice plate upstream components 1 are used to receive the liquid of the outflow of upstream line 4 and to liquid
Body is pressurized.
The generally hollow cylindrical of hard filler liner 2, is coaxially disposed with orifice plate upstream components 1, left end and orifice plate
Upstream components 1 are in close contact.The internal diameter of hard filler liner 2 is equal with the internal diameter of upstream line 4 and downstream line 5.Hard is filled out
Material liner 2 is used to bear the erosion corrosion by liquid, reduces structural damage of the liquid to downstream line 5.
The generally cylindrical of orifice plate components downstream 3, coaxially sets with orifice plate upstream components 1 and hard filler liner 2 respectively
Put.The left side of orifice plate components downstream 3 offers two circular holes successively from left to right vertically, and the internal diameter of two circular holes subtracts successively
It is small.The internal diameter and the external diameter of orifice plate upstream components 1 of the left part circular hole of orifice plate components downstream 3 match, the internal diameter of right part circular hole with it is hard
The external diameter of matter filler liner 2 matches.The right part of right part circular hole is provided with round ring boss, in the left end and hard filler of boss
Lining 2 is in close contact, and right-hand member and the downstream line 5 of boss are in close contact.Orifice plate components downstream 3 be used for fixed orifice plate upstream components 1,
Hard filler liner 2 and downstream line 5.
In the present embodiment, the left end of orifice plate upstream components 1 is connected with the outer surface of upstream line 4 by socket weld, shape
Into upstream socket joint weld bond 6；The outer surface of orifice plate upstream components 1 is connected with the left end of orifice plate components downstream 3 by socket weld, is formed
Orifice plate component socket joint weld bond 7；The right-hand member of orifice plate components downstream 3 is connected with the outer surface of downstream line 5 by socket weld, under formation
Swim socket joint weld bond 8；Hard filler liner 2 is coated in orifice plate components downstream 3.
As shown in figure 3, the axial distance of upstream socket joint weld bond 6 to the right-hand member of upstream line 4 is the 0.5 of the internal diameter of upstream line 4
Times；The axial distance of upstream socket joint weld bond 6 to orifice plate component socket joint weld bond 7 is 2 times of the internal diameter of upstream line 4；Orifice plate component is held
The axial distance for inserting weld bond 7 to the right-hand member of orifice plate upstream components 1 is 0.5 times of the internal diameter of upstream line 4；The axle of hard filler liner 2
To 2.5 times that length is the internal diameter of upstream line 4；The axial length of the round ring boss of orifice plate components downstream 3 is 3mm；Orifice plate downstream
The axial distance of the right-hand member of the round ring boss of part 3 to downstream socket joint weld bond 8 is 0.5 times of the internal diameter of upstream line 4.
Orifice plate upstream components 1 and orifice plate components downstream 3 are made of 304L stainless steel materials；Hard filler liner 2 is adopted
It is made of high solid epoxidic coated filler.
The outer surface roughness of orifice plate upstream components 1 and orifice plate components downstream 3 is 1.6 μm, the μ of other surfaces roughness 3.2
m。
The thickness of hard filler liner 2 is more than or equal to 2mm.Upstream socket joint weld bond 6, orifice plate component socket joint weld bond 7 and downstream
The thickness of socket joint weld bond 8 is all higher than the wall thickness of 1.2 times of upstream line 4.
The utility model analyzes DN50 and following specification restricting orifice and its downstream line in different inlet flow rates, difference
The hydrodynamics characteristic of medium under the interior condition of aperture, have found the affecting laws of restricting orifice downstream erosion corrosion, pass through guarantor
Keep and estimate and round, determine aperture ratio in the case where the sensitive range of the restricting orifice downstream erosion corrosion between 2.25 to 6 is orifice plate
Swim 2.5 times of caliber scopes in the axial direction.Design is optimized to the structure and material of orifice plate in the utility model, under orifice plate
The inside pipe wall of 2.5 times of caliber scopes in the axial direction of trip adds hard filler lining, and the matrix material of orifice plate component is selected
304L stainless steels, hard filler lining select high solid epoxidic coated filler, the axial length of hard filler lining is covered punching
The sensitive range of corrosion is brushed, and makes AND DEWATERING FOR ORIFICE STRUCTURE simple, is easy to processing and in-site installation.
Implementation of the present utility model is explained in detail above in conjunction with embodiment, but the utility model and unlimited
In above-described embodiment, in those of ordinary skill in the art's possessed knowledge, the utility model can also not departed from
Various changes can be made on the premise of objective.The content not being described in detail in the utility model specification can use existing skill
Art.
Claims (10)
- A kind of 1. wear resistant filler lining throttle orifice component of sherardizing steel, it is characterised in that：It includes orifice plate upstream components (1), hard filler liner (2) and orifice plate components downstream (3)；The left end of orifice plate upstream components (1) and the fixed company of upstream line (4) Connect, right-hand member is fixedly connected with the left end of orifice plate components downstream (3)；Hard filler liner (2) is fixed on orifice plate components downstream (3) Inside, positioned at the right side of orifice plate upstream components (1)；The right-hand member of orifice plate components downstream (3) is fixedly connected with downstream line (5).
- 2. the wear resistant filler lining throttle orifice component of sherardizing steel according to claim 1, it is characterised in that：It is described Orifice plate upstream components (1) generally cylindrical, left side offers three circular holes, three circles successively from left to right vertically The internal diameter in hole is sequentially reduced；The internal diameter and the external diameter of upstream line (4) of orifice plate upstream components (1) left part circular hole match, middle part The internal diameter of circular hole is less than the internal diameter of upstream line (4).
- 3. the wear resistant filler lining throttle orifice component of sherardizing steel according to claim 1, it is characterised in that：It is described The generally hollow cylindrical of hard filler liner (2), be coaxially disposed with orifice plate upstream components (1), left end with orifice plate Part (1) is swum to be in close contact；The internal diameter of hard filler liner (2) is equal with the internal diameter of upstream line (4) and downstream line (5).
- 4. the wear resistant filler lining throttle orifice component of sherardizing steel according to claim 1, it is characterised in that：It is described Orifice plate components downstream (3) generally cylindrical, respectively with orifice plate upstream components (1) and hard filler liner (2) is coaxial sets Put；Orifice plate components downstream (3) left side offers two circular holes successively from left to right vertically, and the internal diameter of two circular holes subtracts successively It is small；The internal diameter and the external diameter of orifice plate upstream components (1) of orifice plate components downstream (3) left part circular hole match, the internal diameter of right part circular hole Match with the external diameter of hard filler liner (2)；The right part of right part circular hole is provided with round ring boss, the left end and hard of boss Filler liner (2) is in close contact, and right-hand member and the downstream line (5) of boss are in close contact.
- 5. the wear resistant filler lining throttle orifice component of sherardizing steel according to claim 4, it is characterised in that：It is described The left ends of orifice plate upstream components (1) connected with the outer surface of upstream line (4) by socket weld, form upstream socket joint weld bond (6)；The outer surface of orifice plate upstream components (1) is connected with the left end of orifice plate components downstream (3) by socket weld, forms orifice plate component Socket joint weld bond (7)；The right-hand member of orifice plate components downstream (3) is connected with the outer surface of downstream line (5) by socket weld, forms downstream Socket joint weld bond (8)；Hard filler liner (2) is coated in orifice plate components downstream (3).
- 6. the wear resistant filler lining throttle orifice component of sherardizing steel according to claim 5, it is characterised in that：It is described The axial distance of upstream socket joint weld bond (6) to upstream line (4) right-hand member be 0.5 times of upstream line (4) internal diameter；Upstream socket joint The axial distance of weld bond (6) to orifice plate component socket joint weld bond (7) is 2 times of upstream line (4) internal diameter；Orifice plate component socket joint weld bond (7) it is 0.5 times of upstream line (4) internal diameter to the axial distance of orifice plate upstream components (1) right-hand member；Hard filler liner (2) Axial length is 2.5 times of upstream line (4) internal diameter；The axial length of orifice plate components downstream (3) round ring boss is 3mm；Hole The axial distance of the right-hand member of plate components downstream (3) round ring boss to downstream socket joint weld bond (8) is upstream line (4) internal diameter 0.5 times.
- 7. the wear resistant filler lining throttle orifice component of sherardizing steel according to claim 1, it is characterised in that：It is described Orifice plate upstream components (1) and orifice plate components downstream (3) be made of 304L stainless steel materials；Hard filler liner (2) is adopted It is made of high solid epoxidic coated filler.
- 8. the wear resistant filler lining throttle orifice component of sherardizing steel according to claim 1, it is characterised in that：It is described Orifice plate upstream components (1) and orifice plate components downstream (3) outer surface roughness be 1.6 μm, 3.2 μm of other surfaces roughness.
- 9. the wear resistant filler lining throttle orifice component of sherardizing steel according to claim 1, it is characterised in that：It is described The thickness of hard filler liner (2) be more than or equal to 2mm.
- 10. the wear resistant filler lining throttle orifice component of sherardizing steel according to claim 5, it is characterised in that：Institute The thickness of upstream socket joint weld bond (6), orifice plate component socket joint weld bond (7) and the downstream socket joint weld bond (8) stated is all higher than 1.2 times upper The wall thickness in play pipe road (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720333109.6U CN206786220U (en) | 2017-03-31 | 2017-03-31 | A kind of wear resistant filler lining throttle orifice component of sherardizing steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720333109.6U CN206786220U (en) | 2017-03-31 | 2017-03-31 | A kind of wear resistant filler lining throttle orifice component of sherardizing steel |
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| CN206786220U true CN206786220U (en) | 2017-12-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939953A (en) * | 2017-03-31 | 2017-07-11 | 中核核电运行管理有限公司 | A kind of wear resistant filler lining throttle orifice component of sherardizing steel |
-
2017
- 2017-03-31 CN CN201720333109.6U patent/CN206786220U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939953A (en) * | 2017-03-31 | 2017-07-11 | 中核核电运行管理有限公司 | A kind of wear resistant filler lining throttle orifice component of sherardizing steel |
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