CN117738937A - Forging pump body - Google Patents
Forging pump body Download PDFInfo
- Publication number
- CN117738937A CN117738937A CN202311745205.8A CN202311745205A CN117738937A CN 117738937 A CN117738937 A CN 117738937A CN 202311745205 A CN202311745205 A CN 202311745205A CN 117738937 A CN117738937 A CN 117738937A
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- CN
- China
- Prior art keywords
- pump body
- pump
- forged
- axis
- outlet pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005242 forging Methods 0.000 title description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000003860 storage Methods 0.000 claims abstract description 23
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008602 contraction Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The application provides a forge pump body is applied to vertical pump, includes: the device comprises a pump body, a storage cavity, a water inlet pipe, a water outlet pipe, a supporting lug and a guide groove; the storage cavity is formed in the pump body, the water inlet pipe is arranged at the bottom of the pump body, the axis of the water inlet pipe is parallel to the axis of the pump body, the water outlet pipe is arranged on the outer circumference of the pump body, the axis of the water outlet pipe is perpendicular to the axis of the pump body, at least three supporting lugs are arranged on the outer circumference of the pump body at intervals, and guide grooves are formed in the supporting lugs along the radial direction of the pump body; the storage cavity is of a bowl-shaped structure; the invention has the beneficial effects that the pump body and the storage cavity have regular structure, the expansion and the contraction are symmetrical and uniform, the expansion direction coincides with the axis of the pump body or passes through the center line of the pump body, the extra load generated on an external pipeline is reduced, and the storage cavity has a bowl-shaped structure, so that the effect of effectively guiding water and reducing hydraulic impact loss can be realized, and the flow field in the pump body is more uniform.
Description
Technical Field
The application belongs to vertical pump equipment technical field, concretely relates to forge pump body.
Background
The pump body is the most critical pressure-bearing boundary of nuclear-grade pump equipment, the nuclear-grade pump is important safety equipment of a nuclear reactor, and the pump body generally contains radioactive media with high temperature, once leakage occurs, the operation safety of a reactor system is affected, and the personal safety of operation maintenance personnel is endangered.
Because the system where the nuclear-grade pump pipeline is located is not provided with a device for reducing pipeline stress such as an expansion joint, the interface load of the high-temperature nuclear-grade pump is required to bear temperature load caused by temperature change besides normal pipeline load and earthquake load, and the additional temperature load can cause the central line of the pump to deviate, so that additional load is caused on a bolt of a pump foot, the bolt is broken, the pump set is inclined, the vibration of the pump set exceeds standard, and the service life of the pump set is influenced.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art or related art.
In order to solve the above-mentioned problem, the present application provides a forging pump body, is applied to vertical pump, includes: the device comprises a pump body, a storage cavity, a water inlet pipe, a water outlet pipe, a supporting lug and a guide groove;
the storage cavity is formed in the pump body, the water inlet pipe is arranged at the bottom of the pump body, the axis of the water inlet pipe is parallel to the axis of the pump body, the water outlet pipe is arranged on the outer circumference of the pump body, the axis of the water outlet pipe is perpendicular to the axis of the pump body, at least three supporting lugs are arranged on the outer circumference of the pump body at intervals, and guide grooves are formed in the supporting lugs along the radial direction of the pump body;
the storage cavity is of a bowl-shaped structure.
Optionally, the pump body, the water inlet pipe, the water outlet pipe and the supporting lugs are forgings.
Optionally, the pump body, the water inlet pipe, the water outlet pipe and the supporting lugs are all welded.
Optionally, the guide groove is a strip structure.
Optionally, the support lug is provided with a bolt hole, and an anchor bolt is arranged between the bolt hole and the pump foundation plate.
Optionally, a slider is provided on the pump foundation plate, and the slider is slidably connected with the guide groove.
Optionally, a fit clearance between the slider and the guide groove is smaller than a fit clearance between the anchor bolt and the bolt hole.
Optionally, the water inlet pipe and the water outlet pipe are both provided with clamping grooves for installing the looper flange.
Optionally, the pump further comprises a pump cover, and the pump cover is arranged on the pump body.
Advantageous effects
According to the forged pump body provided by the embodiment of the invention, the structures of the pump body and the storage cavity are regular, the expansion and the contraction are symmetrical and uniform, the expansion direction is coincident with the axis of the pump body or passes through the center line of the pump body, the generation of extra load on an external pipeline is reduced, and the storage cavity is of a bowl-shaped structure, so that the effect of hydraulic impact loss can be effectively reduced, the flow field in the pump body is more uniform, and the efficiency of the pump set is improved.
Drawings
FIG. 1 is a top cross-sectional view of a forged pump body of the present invention;
FIG. 2 is a side cross-sectional view of the forged pump body of the present invention;
fig. 3 is a bottom view of the forged pump body of the present invention.
The reference numerals are expressed as:
1. a pump body; 2. a storage chamber; 3. a water inlet pipe; 4. a water outlet pipe; 5. a support ear; 6. a guide groove; 7. a pump base plate; 8. an anchor bolt; 9. a slide block; 10. a clamping groove.
Detailed Description
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Referring now to fig. 1-3 in combination, there is provided in accordance with an embodiment of the present application a forged pump body for use with a vertical pump, comprising: the device comprises a pump body 1, a storage cavity 2, a water inlet pipe 3, a water outlet pipe 4, a supporting lug 5 and a guide groove 6;
the inside of the pump body 1 is provided with a storage cavity 2, the water inlet pipe 3 is arranged at the bottom of the pump body 1, the axis of the water inlet pipe 3 is parallel to the axis of the pump body 1, the water outlet pipe 4 is arranged on the outer circumference of the pump body 1, the axis of the water outlet pipe 4 is perpendicular to the axis of the pump body 1, at least three supporting lugs 5 are arranged on the outer circumference of the pump body at intervals, and the supporting lugs 5 are provided with guide grooves 6 along the radial direction of the pump body 1; the storage cavity 2 is of a bowl-shaped structure.
Specifically, the inlet tube 3 is installed in pump body 1 bottom, outlet pipe 4 is installed on the outer circumference of pump body 1, when storage chamber 2 is used for installing impeller and stator and uses, pump body 1 adopts complete symmetrical structure, storage chamber 2 is bowl-shaped structure, the shape is regular and along pump body 1 central line symmetry, outlet pipe 4 axis extension line is perpendicular to pump body 1's axis, inlet tube 3 axis is perpendicular to pump body 1 axis, pumping medium enters into pump body 1 inside by inlet tube 3 of bottom, through impeller and the stator pressure boost that is located storage chamber 2, then enter into downstream process pipeline and system through outlet pipe 4, when pumping medium takes place rapid heating up and cooling down the change, because pump body 1 and storage chamber 2 structural rule, expansion and shrink symmetry are even, the expansion direction coincides or produces extra load through pump body 1 central line with the pump body 1 axis, storage chamber 2 is bowl-shaped structure moreover, it can effectively drain, reduce the effect of hydraulic impact loss, make pump body 1 inside flow field more even, be favorable to improving pump group efficiency.
The pump body 1, the water inlet pipe 3, the water outlet pipe 4 and the supporting lugs 5 are forged pieces.
The pump body 1, the water inlet pipe 3, the water outlet pipe 4 and the supporting lugs 5 are all welded.
Specifically, the pump body 1 is manufactured and welded by adopting a forging piece, and compared with a casting piece, the manufacturing method has the advantages of short manufacturing period, high quality controllability and the like, the manufacturing period of a nuclear grade casting piece is generally 8-10 months, and the manufacturing period of the nuclear grade forging piece only needs 1-3 months, so that the manufacturing period can be greatly shortened. According to the nuclear pump standard, the cast needs to be subjected to radiation inspection and liquid penetration inspection in multiple working procedures after being machined, casting defects are often found during nondestructive inspection, a large amount of repairing work is needed, the manufacturing period is long and uncontrollable, particularly, the defects found during nondestructive inspection after finishing are finished, the repair welding can cause part deformation risks, and the manufacturing precision of the pump set is affected; if the defect is large, the pump body 1 may be scrapped due to stress deformation generated by repair welding, and the time and the labor are consumed for re-feeding. The forging has few defects, no matter the forging blank or the pump body 1 after finish machining, the defects of raw materials are rarely found in nondestructive detection, the repairing is generally not needed, the problem of waste materials is avoided, a large amount of repairing work is reduced, and the manufacturing period is greatly shortened and controllable. The water inlet pipe 3 and the water outlet pipe 4 are of a cylindrical circular pipe structure, the blank is a forging piece, and the blank and the main body structure of the pump body 1 are connected into a whole through welding. The blank of the supporting lug 5 is a forging piece and is connected with the main body structure of the pump body 1 into a whole through welding.
The guide groove 6 has a long strip structure.
Still include pump foundation plate 7, set up the bolt hole on the supporting lug 5, be provided with rag bolt 8 between bolt hole and the pump foundation plate 7.
The pump foundation plate 7 is provided with a slide block 9, and the slide block 9 is slidably connected with the guide groove 6.
The fit clearance between the slider 9 and the guide groove 6 is smaller than the fit clearance between the anchor bolt 8 and the bolt hole.
Specifically, the supporting lugs 5 are connected with the lower pump foundation plate 7 through bolt holes and bear all dynamic load and static load of the pump set, so that the pump set is an important supporting component. The guide groove 6 is formed in the bottom center of the supporting lug 5 along the radial direction of the pump body 1, the sliding block 9 is arranged on the pump foundation plate 7 and is in sliding connection with the guide groove 6, when the pump body 1 is deformed or bears the thermal load of an external pipeline due to temperature change, the sliding block 9 can play a role in deformation guide control and protection of the foundation bolt 8, and the three guide sliding blocks 9 can enable the deformation direction to always point to the center of the pump body 1 or deform outwards along the radial direction from the center of the pump body 1, so that the position of the center line of the pump body is unchanged, and the center positioning function of the pump set can be played.
When the pump body 1 bears external load, the sliding block 9 bears shearing force, the bearing part of the sliding block 9 is in surface contact, the bearing part of the corresponding foundation bolt 8 is in point contact and bears shearing force, the foundation bolt 8 is not damaged, and the foundation bolt 8 is protected.
The water inlet pipe 3 and the water outlet pipe 4 are respectively provided with a clamping groove 10 for installing a looper flange.
Specifically, draw-in grooves 10 are all offered on inlet tube 3 and outlet pipe 4 for install the looper flange, make things convenient for pump body 1 to carry out hydrostatic test and performance test before leaving the factory, leave the factory after the interface needs are cut off and are maintained the welding groove with unnecessary part before leaving the factory after the pump test is accomplished, still further, inlet tube 3 and outlet pipe 4 also can design into the flange, make things convenient for follow-up experiment and erection joint.
The pump further comprises a pump cover, and the pump cover is arranged on the pump body 1.
Specifically, the pump cover is mounted on the pump body 1 by bolts so that the storage chamber 2 forms a sealed chamber.
The foregoing description of the preferred embodiment of the present invention is not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The foregoing is merely a preferred embodiment of the present application and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the present application.
Claims (9)
1. A forged pump body for use in a vertical pump, comprising: the device comprises a pump body (1), a storage cavity (2), a water inlet pipe (3), a water outlet pipe (4), a supporting lug (5) and a guide groove (6);
the novel water pump is characterized in that a storage cavity (2) is formed in the pump body (1), the water inlet pipe (3) is arranged at the bottom of the pump body (1), the axis of the water inlet pipe (3) is parallel to the axis of the pump body (1), the water outlet pipe (4) is arranged on the outer circumference of the pump body (1), the axis of the water outlet pipe (4) is perpendicular to the axis of the pump body (1), at least three supporting lugs (5) are arranged on the outer circumference of the pump body at intervals, and guide grooves (6) are formed in the supporting lugs (5) along the radial direction of the pump body (1);
the storage cavity (2) is of a bowl-shaped structure.
2. The forged pump body according to claim 1, characterized in that the pump body (1), the water inlet pipe (3), the water outlet pipe (4) and the support lugs (5) are forged pieces.
3. The forged pump body according to claim 2, characterized in that the pump body (1), the water inlet pipe (3), the water outlet pipe (4) and the support lugs (5) are all welded.
4. A forged pump body according to claim 3, characterized in that the guide grooves (6) are of elongated configuration.
5. The forged pump body according to claim 4, further comprising a pump foundation plate (7), wherein bolt holes are provided in the support lugs (5), and anchor bolts (8) are provided between the bolt holes and the pump foundation plate (7).
6. Forged pump body according to claim 5, characterized in that the pump base plate (7) is provided with a slide (9), which slide (9) is in sliding connection with the guide groove (6).
7. Forged pump body according to claim 6, characterized in that the fit-up gap between the slide block (9) and the guide groove (6) is smaller than the fit-up gap between the anchor bolt (8) and the bolt hole.
8. Forged pump body according to claim 1, characterized in that the inlet pipe (3) and the outlet pipe (4) are provided with clamping grooves (10) for mounting a looper flange.
9. The forged pump body according to claim 1, further comprising a pump cap provided on the pump body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311745205.8A CN117738937A (en) | 2023-12-18 | 2023-12-18 | Forging pump body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311745205.8A CN117738937A (en) | 2023-12-18 | 2023-12-18 | Forging pump body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117738937A true CN117738937A (en) | 2024-03-22 |
Family
ID=90280778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311745205.8A Pending CN117738937A (en) | 2023-12-18 | 2023-12-18 | Forging pump body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117738937A (en) |
-
2023
- 2023-12-18 CN CN202311745205.8A patent/CN117738937A/en active Pending
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