CN208513996U - The camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body repairs structure - Google Patents

The camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body repairs structure Download PDF

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Publication number
CN208513996U
CN208513996U CN201820837231.1U CN201820837231U CN208513996U CN 208513996 U CN208513996 U CN 208513996U CN 201820837231 U CN201820837231 U CN 201820837231U CN 208513996 U CN208513996 U CN 208513996U
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China
Prior art keywords
hole
camshaft
camshaft hole
metallic sheath
nuclear power
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CN201820837231.1U
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Chinese (zh)
Inventor
周勇
谭世杰
张兰岐
费瑞银
刘松
郑超雄
李小虎
张树林
荆哲
朱鹏树
陈星�
陈建
马轲
司鹏坤
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China General Nuclear Power Corp
CGN Power Co Ltd
Daya Bay Nuclear Power Operations and Management Co Ltd
Lingdong Nuclear Power Co Ltd
Guangdong Nuclear Power Joint Venture Co Ltd
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China General Nuclear Power Corp
CGN Power Co Ltd
Daya Bay Nuclear Power Operations and Management Co Ltd
Lingdong Nuclear Power Co Ltd
Guangdong Nuclear Power Joint Venture Co Ltd
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Application filed by China General Nuclear Power Corp, CGN Power Co Ltd, Daya Bay Nuclear Power Operations and Management Co Ltd, Lingdong Nuclear Power Co Ltd, Guangdong Nuclear Power Joint Venture Co Ltd filed Critical China General Nuclear Power Corp
Priority to CN201820837231.1U priority Critical patent/CN208513996U/en
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Publication of CN208513996U publication Critical patent/CN208513996U/en
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Abstract

The utility model belongs to internal combustion engine recovery technique field, the camshaft hole for being intended to provide a kind of pressurized-water reactor nuclear power plant Emergency diesel body repairs structure, the reparation structure to by the original camshaft hole of nuclear power Emergency diesel body be deformed and/or crackle after the first camshaft hole reparation for being formed at the second camshaft hole, in the utility model, by forming first shaft hole to the first camshaft hole reaming, metallic sheath tight fit is plugged in first shaft hole, and in the two sides of metallic sheath, installation connecting element is on the junction of metallic sheath and body to prevent metallic sheath from rotationally and axially moving, finally, reaming is carried out to be formed and comparable second camshaft hole of original camshaft hole to the sets of holes of metallic sheath, compared to existing renovation technique, the reparation structure can realize the online reparation of camshaft hole after failure, it repairs short time limit and success rate is high, it repairs Size, required precision, the intensity requirement of camshaft hole etc. after multiple easily reach design requirement.

Description

The camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body repairs structure
Technical field
The utility model belongs to internal combustion engine recovery technique field, is to be related to a kind of pressurized-water reactor nuclear power plant to answer more specifically The camshaft hole of anxious diesel-engine body repairs structure.
Background technique
Body is the Key basic parts of diesel engine, and it typically is casting.Camshaft hole is important on diesel-engine body again One of hole system is typically located at the left and right sides of body, to supporting cam wheel axis.It is well known that the structure of diesel-engine body compared with Complexity, camshaft work inclement condition, in practical applications, camshaft bush damage the case where happen occasionally, the damage of bearing shell It is bad that camshaft hole is be easy to cause to deform or crack.For the normal work for guaranteeing body, camshaft hole dimensional accuracy one As require high, but the solderability of cast iron materials is poor, thus, with the method for traditional repair welding and secondary operation to camshaft hole into The success rate that row is repaired is lower, it is easy to entire body be caused directly to scrap.
Utility model content
The purpose of this utility model is to provide a kind of camshaft hole reparations of pressurized-water reactor nuclear power plant Emergency diesel body Structure, traditional restorative procedure reparation of the camshaft hole to solve nuclear power Emergency diesel body existing in the prior art The lower technical problem of success rate.
In order to solve the above technical problems, the technical solution adopted in the utility model is: providing a kind of pressurized-water reactor nuclear power plant and answer The camshaft hole of anxious diesel-engine body repairs structure, the camshaft hole reparation knot of the pressurized-water reactor nuclear power plant Emergency diesel body Structure, to by the original camshaft hole of nuclear power Emergency diesel body be deformed and/or crackle after the first camshaft for being formed It repairs into the second camshaft hole in hole, wherein the camshaft hole of the pressurized-water reactor nuclear power plant Emergency diesel body repairs structure packet It includes
First shaft hole is formed by the first camshaft hole reaming;
Metallic sheath, tight fit are plugged in the first shaft hole and have sets of holes;
Connector is installed on the junction of the metallic sheath and the body, to limit the metallic sheath rotation and axis To movement;The two sides of the metallic sheath are respectively arranged at least one described connector;
Second axis hole is second camshaft hole, is formed by the sets of holes reaming of the metallic sheath, and described second Center line, size and the required precision of camshaft hole center line, size and the required precision with the original camshaft hole respectively Correspondence is identical.
Preferably, the connector is junction of the edges of two sheets of paper screw.
Further, the two sides of the metallic sheath are respectively arranged 1 junction of the edges of two sheets of paper screw, and two junction of the edges of two sheets of paper screws are opposite In the design centre of the original camshaft hole, symmetrical and intersection is tiltedly to setting.
Further, the first shaft hole is formed by first camshaft hole through the first boring cutter bore hole, and described first The center line of axis hole and the design centre line of the original camshaft hole are located along the same line.
Further, second axis hole is formed by the sets of holes of the metallic sheath through the second boring cutter, and described second The center line of axis hole and the design centre line of the original camshaft hole are located along the same line.
Further, first boring cutter and second boring cutter are the dedicated boring cutter of Self-aligning camshaft.
Further, the internal diameter that the internal diameter of the metallic sheath is equal to the original camshaft hole subtracts in the first shaft hole Reserved machining allowance size, the aperture that the outer diameter of the metallic sheath is equal to the first shaft hole are matched plus interference between the two Resultant size.
Specifically, the machining allowance is 1mm~2mm.
Further, the metallic sheath borrows thermal expansion and contraction principle and is plugged in the first shaft hole.
Further, the metallic sheath after liquid nitrogen is cooling and size is shunk is plugged in the first shaft hole.
Further, there is multiple first camshaft holes, adjacent 3 the second camshafts after reparation on the body The concentricity in hole is less than or equal to φ 0.03mm.
Further, first camshaft hole is greater than 3, and all second camshaft holes after reparation is coaxial Degree is less than or equal to φ 0.12mm.
Compared with prior art, the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body provided by the utility model is repaired The beneficial effect of complex structure is:
It includes first shaft hole, metallic sheath, company that the camshaft hole of the pressurized-water reactor nuclear power plant Emergency diesel body, which repairs structure, Fitting and the second axis hole, wherein first shaft hole by original camshaft hole be deformed and/or crackle after the first camshaft for being formed Hole reaming forms, by the way that metallic sheath tight fit is plugged in first shaft hole, and in the two sides of metallic sheath, in metallic sheath and body At least one connector is installed to prevent metallic sheath from rotationally and axially moving on junction, finally, the sets of holes to metallic sheath carry out Reaming is to form the second axis hole, because the center line of the second axis hole, size and required precision etc. are corresponding with original camshaft hole It is identical, and intensity needed for body after the synchronous guarantee failure of metallic sheath, therefore, the second axis hole for repairing formation can quite original cam Axis hole, it is clear that the online reparation of the camshaft hole after failure may be implemented in the reparation structure, it is high to repair success rate, and after reparation Size, required precision, the intensity requirement of camshaft hole etc. easily reach design requirement, can ensure that the camshaft hole after repairing just Often work operation.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root Other attached drawings are obtained according to these attached drawings.
Fig. 1 is that the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body in the utility model embodiment repairs structure Schematic diagram of internal structure;
Fig. 2 is the partial enlarged view in Fig. 1 at A.
Wherein, the label in attached drawing is as follows:
10- body, 20- center line;
100- first shaft hole, the second axis hole of 200-/the second camshaft hole, 300- metallic sheath, 400- connector/junction of the edges of two sheets of paper spiral shell Nail.
Specific embodiment
For technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, below In conjunction with specific drawings and the specific embodiments, further elaborate to the utility model.Wherein, the utility model is embodied The same or similar label indicates the same or similar element or element with the same or similar functions in the attached drawing of example. It should be understood that ground, specific embodiment disclosed below are intended for explaining the utility model, it is not used to limit originally practical new Type.
It should be noted that when element is referred to as " being fixed on " or " being installed on " or " being set to " or " being connected to " another element On, it, which can be, is directly or indirectly located on another element.For example, when an element referred to as " is connected to " another yuan On part, it, which can be, is directly or indirectly connected on another element.Term " length ", " width ", "upper", "lower", " left side ", The orientation or position of the instructions such as " right side ", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outside" are based on attached drawing Shown in orientation or position, be only easy for describing, should not be understood as the limitation to the technical program.
In addition, term " first ", " second " only for ease of description, be not understood to indicate or imply relative importance or Person implicitly indicates the quantity of technical characteristic.The meaning of " plurality " is two or more, unless otherwise specifically defined. In short, for the ordinary skill in the art, can understand the concrete meaning of above-mentioned term as the case may be.
Below in conjunction with attached drawing 1 and Fig. 2 to a kind of pressurized-water reactor nuclear power plant Emergency diesel body provided by the utility model The realization that camshaft hole repairs structure is described in detail.
It should be noted that the camshaft hole of the pressurized-water reactor nuclear power plant Emergency diesel body repairs structure, mainly to incite somebody to action First camshaft hole (not shown) reparation of nuclear power Emergency diesel body 10 is at the second camshaft hole 200.It is to be appreciated that the One camshaft hole be original camshaft hole (not shown) be deformed and/or crackle after the camshaft hole that is formed, the second cam Axis hole 200 is the camshaft hole after repairing successfully, that is, the second camshaft hole 200 is equivalent to original camshaft hole.Certainly, In fact, the reparation structure is not limited only to repair the camshaft hole of nuclear power Emergency diesel body 10, it may also be used for repair nuclear power The other suitable components of oil-burning machine body 10 or position etc..
As shown in Figure 1, the camshaft hole of the pressurized-water reactor nuclear power plant Emergency diesel body repairs structure, including first shaft hole 100, metallic sheath 300, connector 400 and the second axis hole 200.Wherein, first shaft hole 100 is formed by the first camshaft hole reaming. It is to be appreciated that the aperture of first shaft hole 100 is greater than the aperture of original camshaft hole.Machine can be greatly reduced in view of reaming is too deep The intensity of 10 base material of body, reaming shallowly not can guarantee the reinforcement strength of metallic sheath 300 then excessively, and can not thoroughly eliminate deformation and/or Crackle, thus, specific reaming scheme, such as the depth and length of reaming should be according to (i.e. the first cams of camshaft hole after failure Axis hole) surplus size, metallic sheath size and determine situations such as crack depth.
As shown in Figure 1, metallic sheath 300 has sets of holes (not shown) and tight fit is plugged in first shaft hole 100, in this way, Metallic sheath 300 can be fixed on body 10.In addition, rotationally and axially moving for limitation metallic sheath 300, guarantee to repair structure Stability, connector 400 is installed on the junction of metallic sheath 300 and body 10, and is respectively arranged in the two sides of metallic sheath 300 There is at least one connector 400.
In addition, the second axis hole 200 is formed by the sets of holes (not shown) reaming of metallic sheath 300, it is possible to understand that ground is finally expanded Second axis hole 200 made of hole is the second camshaft hole.Specifically, center line 20, size and the essence of the second camshaft hole 200 Degree requires corresponding identical as the center line 20 of original camshaft hole, size and required precision respectively.In other words, the second axis hole 200 aperture, concentricity etc. are able to satisfy the design requirement of original camshaft hole, the second axis hole 200 (namely second camshaft hole) Original camshaft hole can be substituted completely to work on.
Generally, the camshaft hole of the pressurized-water reactor nuclear power plant Emergency diesel body repairs structure, using " reaming+grafting The recovery scenario of metallic sheath " repairs the camshaft hole for having deformation and/or crackle, compared to traditional repair welding, is not necessarily to By the solderability of body casting, but directly reaming processing and metal reinforcement twice technique are combined together, repair the duration Shorter and reparation success rate is higher, and dimensional tolerance, geometric tolerance of the camshaft hole after reparation etc. are all satisfied design requirement, and repair The intensity of camshaft hole after multiple is also able to satisfy normal operation and requires.
Further, the camshaft hole reparation as pressurized-water reactor nuclear power plant Emergency diesel body provided by the utility model A kind of specific embodiment of structure, to ensure to repair the stability of structure, reduction metallic sheath 300 rotationally and axially moves several Rate, connector 400 are preferably junction of the edges of two sheets of paper screw.It should be noted that as depicted in figs. 1 and 2, compared to common screw, when installation, ride It stitches contact line of the center line of screw 400 just between body 10 and metallic sheath 300 to be located along the same line, preferably with this Ensure that the connection between body 10 and metallic sheath 300 is stronger.
As shown in Figure 1, specifically in the present embodiment, the two sides of metallic sheath 300 are respectively arranged 1 junction of the edges of two sheets of paper screw 400, and two Junction of the edges of two sheets of paper screw 400 is symmetrical relative to the design centre of original camshaft hole and intersects tiltedly to setting.Specifically, it is shown with Fig. 1 Example, a junction of the edges of two sheets of paper screw 400 are located at the upside of center line 20 and by the left side (being equivalent in fourth quadrant), another junction of the edges of two sheets of paper screws 400 are located at the downside of center line 20 and lean on the right (being equivalent in the second quadrant).It should be noted that in general, each junction of the edges of two sheets of paper spiral shell The size of nail 400 is determined by the thickness of metallic sheath 300.
Further, the camshaft hole reparation as pressurized-water reactor nuclear power plant Emergency diesel body provided by the utility model A kind of specific embodiment of structure, first shaft hole 100 is by the first camshaft hole (not shown) through the first boring cutter (not shown) boring Hole forms, and the center line 20 of first shaft hole 100 and the design centre line 20 of original camshaft hole are located along the same line.This Sample can guarantee the concentricity of the first shaft hole 100 and original camshaft hole that expand when expanding the internal diameter of camshaft hole.By Limited in the structural particularity of camshaft, and live processing space, specifically in the present embodiment, the first boring cutter is self-regulated cardiac prominence The dedicated boring cutter of wheel shaft.
Further, the camshaft hole reparation as pressurized-water reactor nuclear power plant Emergency diesel body provided by the utility model A kind of specific embodiment of structure, accordingly, the second axis hole 200 is by the sets of holes (not shown) of metallic sheath 300 through the second boring cutter (not shown) forms, and the design centre line 20 of the center line 20 of the second axis hole 200 and original camshaft hole is located at same straight line On.In this way, can guarantee the concentricity of the second axis hole 200 and original camshaft hole expanded, and this when expanding sets of holes aperture The concentricity accumulated error that operation generates before the boring process at place can be eliminated and be compensated.Specifically in the present embodiment, second Boring cutter is also the dedicated boring cutter of Self-aligning camshaft, and to simplify the production of cutter, in general, the second boring cutter and the first boring cutter can be It is same boring cutter.
Further, the camshaft hole reparation as pressurized-water reactor nuclear power plant Emergency diesel body provided by the utility model The outer diameter D of a kind of specific embodiment of structure, metallic sheath 300 is greater than or equal to (being actually slightly over) first shaft hole 100 Aperture, specifically, the aperture that the outer diameter D of metallic sheath 300 is equal to first shaft hole 100 are big plus value of interference fit between the two It is small.Accordingly, the internal diameter d (i.e. the original apertures of sets of holes) of metallic sheath 300 is less than or equal to (practical is to be slightly less than) original cam The design aperture of axis hole, specifically, the internal diameter that the internal diameter d of metallic sheath 300 is equal to original camshaft hole subtract in first shaft hole 100 Reserved machining allowance size.
It should be noted that machining allowance, metallic sheath that the aperture of specific first shaft hole 100,300 sets of holes of metallic sheath are reserved 300 thickness etc. should all be determined according to diesel engine model.Specifically in the present embodiment, axle sleeve rear axle is installed to eliminate or adjusting Set deforms, to ensure the concentricity of sets of holes Yu original camshaft hole, it is preferable that the reserved processing of 300 sets of holes of metallic sheath Surplus is 1mm~2mm.
Further, the camshaft hole reparation as pressurized-water reactor nuclear power plant Emergency diesel body provided by the utility model A kind of specific embodiment of structure, to guarantee the reliability and success rate repaired, metallic sheath 300 borrows thermal expansion and contraction principle and inserts It is connected in first shaft hole 100.Because the area in view of camshaft hole is big, cast iron deflection is small, it is preferable that and ruler cooling through liquid nitrogen It is very little shunk after metallic sheath 300 be plugged in first shaft hole 100.That is, metallic sheath 300 is by way of the cold set of liquid nitrogen It is plugged in first shaft hole 100.
Further, the camshaft hole reparation as pressurized-water reactor nuclear power plant Emergency diesel body provided by the utility model A kind of specific embodiment of structure has multiple first camshaft hole (not shown) on body 10, it is possible to understand that ground, body 10 It is upper that there are multiple original camshaft holes, when have it is multiple break down especially more than 3 camshaft holes when, in repair process, It is necessary to ensure that the concentricity of adjacent 3 the second camshaft holes 200 after repairing is less than or equal to φ 0.03mm.
In addition to this, the first camshaft hole is greater than 3, that is, when more than 3 camshaft holes break down, repair process In, for the normal operation for ensuring camshaft hole, also need the concentricity of all second camshaft holes 200 after guaranteeing to repair be less than or Equal to φ 0.12mm.
From the foregoing, it will be observed that generally, the camshaft hole of the pressurized-water reactor nuclear power plant Emergency diesel body repairs the reparation of structure Principle are as follows: first to the camshaft hole reaming of failure, then metallic sheath 300 is socketed in the first shaft hole 100 expanded, on the one hand Reinforce the intensity of body 10, on the other hand borrows the sets of holes of metallic sheath 300 to substitute the camshaft hole of failure, finally, to metal The sets of holes reaming of set 300 can be equal to original camshaft hole with the second axis hole 200 for ensuring to expand, and then substitute original camshaft Hole, it is ensured that the normal operation of camshaft hole achievees the effect that reparation.
Accordingly, for being repaired to UD45V12S6 diesel engine, wherein 10 a total of 7 originals of body to be repaired Beginning camshaft hole, the aperture of original camshaft hole are 110mm H7.Using the convex of the pressurized-water reactor nuclear power plant Emergency diesel body It is as follows that axle hole repairs the key step that structure is repaired:
(1) using the first boring cutter to deforming and/or having the camshaft hole of crackle to carry out bore hole, specifically, boring depth is 5mm, bore hole to 120mm;
(2) selecting internal diameter is 107mm, and outer diameter is the metallic sheath 300 of 120.06mm~120.08mm;
(3) metallic sheath 300 is placed in liquid nitrogen plan, makes its rapid cooling, be in and shrink in the outer diameter of metallic sheath 300 When state, in the camshaft hole (namely first shaft hole 100) after metallic sheath 300 to be mounted on to rapidly bore hole, to ensure metallic sheath 300 tight fits are plugged in first shaft hole 100;
(4) in the two sides of metallic sheath 300, and 1 connecting hole is opened up respectively in the junction of metallic sheath 300 and body 10, M6 junction of the edges of two sheets of paper screw 400 is installed in corresponding connecting hole, to reinforce the connection of metallic sheath 300 and body 10, prevents metallic sheath 300 rotationally and axially move;
(5) sets of holes (i.e. the second axis using the second boring cutter by the sets of holes bore hole of metallic sheath 300 to 110mm H7, after bore hole Hole 200) design requirement that meets original camshaft hole, such as aperture (110mm H7), concentricity (adjacent 3 holes concentricity≤φ 0.03mm), 7 hole concentricity≤φ 0.12mm of overall length etc..
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model.For this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of the claims of the utility model.

Claims (12)

1. the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body repairs structure, to by nuclear power Emergency diesel body Original camshaft hole be deformed and/or crackle after the first camshaft hole reparation for being formed at the second camshaft hole, feature exists In the camshaft hole of the pressurized-water reactor nuclear power plant Emergency diesel body repairs structure and includes
First shaft hole is formed by the first camshaft hole reaming;
Metallic sheath, tight fit are plugged in the first shaft hole and have sets of holes;
Connector is installed on the junction of the metallic sheath and the body, rotationally and axially moves to limit the metallic sheath It is dynamic;The two sides of the metallic sheath are respectively arranged at least one described connector;
Second axis hole is second camshaft hole, is formed by the sets of holes reaming of the metallic sheath, and second cam Center line, size and the required precision of axis hole are corresponding with the center line of the original camshaft hole, size and required precision respectively It is identical.
2. the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body according to claim 1 repairs structure, feature It is, the connector is junction of the edges of two sheets of paper screw.
3. the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body according to claim 2 repairs structure, feature It is, the two sides of the metallic sheath are respectively arranged 1 junction of the edges of two sheets of paper screw, and two junction of the edges of two sheets of paper screws are relative to described original convex The design centre of axle hole is symmetrical and intersects tiltedly to setting.
4. the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body according to claim 1 repairs structure, feature It is, the first shaft hole is formed by first camshaft hole through the first boring cutter bore hole, and the center line of the first shaft hole It is located along the same line with the design centre line of the original camshaft hole.
5. the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body according to claim 4 repairs structure, feature It is, second axis hole is formed by the sets of holes of the metallic sheath through the second boring cutter, and the center line of second axis hole It is located along the same line with the design centre line of the original camshaft hole.
6. the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body according to claim 5 repairs structure, feature It is, first boring cutter and second boring cutter are the dedicated boring cutter of Self-aligning camshaft.
7. the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body according to claim 1 repairs structure, feature It is, the internal diameter that the internal diameter of the metallic sheath is equal to the original camshaft hole subtracts more than the processing reserved in the first shaft hole Size is measured, the outer diameter of the metallic sheath is equal to the aperture of the first shaft hole plus value of interference fit size between the two.
8. the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body according to claim 7 repairs structure, feature It is, the machining allowance is 1mm~2mm.
9. the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body according to claim 1 repairs structure, feature It is, the metallic sheath borrows thermal expansion and contraction principle and is plugged in the first shaft hole.
10. the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body according to claim 9 repairs structure, feature It is, the metallic sheath after liquid nitrogen is cooling and size is shunk is plugged in the first shaft hole.
11. the camshaft hole reparation of the pressurized-water reactor nuclear power plant Emergency diesel body according to any of claims 1 to 10 Structure, which is characterized in that there is multiple first camshaft holes, adjacent 3 the second camshafts after reparation on the body The concentricity in hole is less than or equal to φ 0.03mm.
12. the camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body according to claim 11 repairs structure, special Sign is that first camshaft hole is greater than 3, and the concentricity of all second camshaft holes after reparation is less than or waits In φ 0.12mm.
CN201820837231.1U 2018-05-31 2018-05-31 The camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body repairs structure Active CN208513996U (en)

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CN201820837231.1U CN208513996U (en) 2018-05-31 2018-05-31 The camshaft hole of pressurized-water reactor nuclear power plant Emergency diesel body repairs structure

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114643453A (en) * 2020-12-17 2022-06-21 国家电投集团黄河上游水电开发有限责任公司 Repairing method suitable for deformation of anode guide rod lifting hole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114643453A (en) * 2020-12-17 2022-06-21 国家电投集团黄河上游水电开发有限责任公司 Repairing method suitable for deformation of anode guide rod lifting hole

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