CN210440239U - Hydraulic test bed for nuclear power main pump hydraulic pressure-bearing unit - Google Patents
Hydraulic test bed for nuclear power main pump hydraulic pressure-bearing unit Download PDFInfo
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- CN210440239U CN210440239U CN201921270349.1U CN201921270349U CN210440239U CN 210440239 U CN210440239 U CN 210440239U CN 201921270349 U CN201921270349 U CN 201921270349U CN 210440239 U CN210440239 U CN 210440239U
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Abstract
The utility model discloses a hydraulic test bed for a nuclear power main pump hydraulic pressure-bearing unit, which comprises a bracket, a hydraulic pressure-bearing unit and a hydraulic pressure-bearing unit, wherein the bracket is used for supporting a test bed assembly and the nuclear power main pump hydraulic pressure-bearing unit; the upper end of the test pump shell is open, and the test pump shell is provided with a water inlet, a water outlet and an exhaust port, is arranged above the bracket and is used for clamping, fixing and pressurizing the hydraulic pressure-bearing unit of the nuclear power main pump; the test pump shaft is arranged on the axial center of the test pump shell, penetrates through the nuclear power main pump hydraulic pressure bearing unit and is used for clamping and fixing the nuclear power main pump hydraulic pressure bearing unit; the lower end of the test pump shaft extends to an outlet at the lower end of the test pump body and is provided with a lower end connecting and sealing structure; and the upper end of the joint of the lower upper part of the test pump shaft and the upper end of the hydraulic pressure-bearing unit of the nuclear power main pump is provided with a connecting and sealing structure. The application provides a hydraulic test bed for a nuclear power main pump hydraulic pressure-bearing unit, which can meet the requirement of testing the pressure-bearing performance of a nuclear power main pump key pressure-bearing component legal hydraulic test.
Description
Technical Field
The utility model relates to a testing arrangement of nuclear power main pump, in particular to a hydrostatic test platform that is used for nuclear power main pump water conservancy pressure-bearing unit.
Background
The nuclear power main pump is one of key components of a nuclear island main loop, is commonly called a nuclear island heart in the industry, and is used for driving medium circulation in a reactor to transfer heat generated by fuel to a secondary side, and the safe operation of the nuclear power main pump is related to the transmission of coolant circulation heat of the nuclear island main loop.
Currently, the main manufacturers of nuclear power main pumps in the world are: EMD in the United states, thermal Mongolian AREVA in France, MHI Mitsubishi in Japan, KSB in Germany, Austria ANDRITZ, and Russian St. Pederburg machine manufacturing Central design office, and the like. The major domestic products include companies, Shenzhou and Ha-Sha-E, where the applicant is located.
After the nuclear power main pump is manufactured, in order to ensure the safety performance of the nuclear power main pump, a hydraulic test needs to be carried out on the nuclear power main pump, and the pressure-bearing performance of the main pump hydraulic unit pressure-bearing boundary member is tested. The company of the applicant has completed the autonomous design and research of the third-generation nuclear power main pump and enters the production and manufacturing stage, and in order to verify the factory performance of the third-generation nuclear power main pump, a hydraulic test bed which meets the requirement of the hydraulic pressure-bearing unit pressure-bearing part of the nuclear power main pump needs to be built, so that the hydraulic test bed is provided.
SUMMERY OF THE UTILITY MODEL
Based on the above, the purpose of the application is to develop a hydraulic test bed for a nuclear power main pump hydraulic pressure-bearing unit, which can meet the requirement of the legal hydraulic test pressure-bearing performance test of a nuclear pump key pressure-bearing component.
A hydrostatic test platform for nuclear power main pump water conservancy pressure-bearing unit includes
The support is used for supporting the test bed assembly and the nuclear power main pump hydraulic pressure bearing unit;
the upper end of the test pump shell is open, and the test pump shell is provided with a water inlet, a water outlet and an exhaust port, is arranged above the bracket and is used for clamping, fixing and pressurizing the hydraulic pressure-bearing unit of the nuclear power main pump;
the test pump shaft is arranged on the axial center of the test pump shell, penetrates through the nuclear power main pump hydraulic pressure bearing unit and is used for clamping and fixing the nuclear power main pump hydraulic pressure bearing unit;
the lower end of the test pump shaft extends to an outlet at the lower end of the test pump body and is provided with a lower end connecting and sealing structure; and the upper end of the joint of the lower upper part of the test pump shaft and the upper end of the hydraulic pressure-bearing unit of the nuclear power main pump is provided with a connecting and sealing structure.
Furthermore, the lower end connecting and sealing structure comprises a lower sealing flange, a sealing ring and a lower flange fastening plate, the lower sealing flange is installed at an outlet at the lower end of the test pump shell and is provided with the sealing ring, the lower end of the test pump shaft extends to the lower sealing flange, and the lower flange fastening plate is located below the lower sealing flange and is connected with the lower end of the test pump shaft and compresses the lower sealing flange.
Furthermore, the upper end connecting and sealing structure comprises an upper flange, a sealing ring, an upper sealing ring and a locking nut, wherein the upper flange, the sealing ring, the upper sealing ring and the locking nut are sleeved on the test pump shaft in a penetrating mode, the upper flange is connected with the nuclear power main pump hydraulic pressure-bearing unit and the sealing ring is installed on the upper flange, the upper sealing ring is located between the upper flange and the locking nut, and the locking nut is connected with the test pump shaft.
Further, a heat shield protection frame is installed on the test pump shaft corresponding to the heat shield assembly of the nuclear power main pump hydraulic pressure bearing unit.
Furthermore, the support is formed by connecting an upper support and a lower support up and down.
Further, a motor supporting backing ring is arranged when the nuclear power main pump hydraulic pressure bearing unit is connected with the test pump shell.
Furthermore, the hydraulic test bed is integrally arranged in a pit with the depth of minus 2.5 meters below the ground and an enclosure isolation special area with the depth of 1.5 meters above the ground.
The utility model has the advantages that:
the utility model discloses a nuclear power main pump hydrostatic test bench design can satisfy and carry out main key water conservancy unit pressure-bearing boundary member static pressure legal hydrostatic test requirement of main pump to fully consider the safe and reliable performance, with verifying the key water conservancy unit pressure-bearing boundary member performance of nuclear main pump, confirm that its bearing capacity satisfies experimental outline technical requirement.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or technical descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is the utility model discloses in, hydrostatic test platform's assembly structure sketch map.
Fig. 2 is the utility model discloses in, hydrostatic test platform's assembly structure schematic view overlookes.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
Embodiments of the present invention/utility model will be described in detail below with reference to the drawings.
The nuclear power main pump hydraulic pressure-bearing unit is mainly formed by combining a first sealing chamber 1 ', a guide vane assembly 2 ', a heat shield assembly 3 ', a P2 pressure pipeline connection 4 ', a first sealing chamber nut 5 ', a first sealing chamber bolt 6 ', a main flange 7 ', a main bolt 8 ', a main nut 9 ' and the like. Seal chamber number one 1 ' is located centrally of main flange 7 ' and the P2 pressure line connection 4 ' is in communication with its internal cavity. The heat shield assembly 3 ' is provided with a water inlet flange 31 ' and a water outlet flange 32 ' which are positioned below the main flange 7 ' and the first sealed chamber 1 ', and the first sealed chamber 1 ' and the heat shield assembly 3 ' are connected through a first sealed chamber nut 5 ' and a first sealed chamber bolt 6 '. The water inlet flange 31 ' and the water outlet flange 32 ' extend out of the main flange 7 '. The vane assembly 2 ' is located below the heat shield assembly 3 ', and the heat shield tube 33 ' of the heat shield assembly 3 ' protrudes into the hollow interior of the vane assembly 2 '. After assembly, the axial centers of the first sealing chamber 1 ', the guide vane assembly 2 ', the heat shield assembly 3 ' and the main flange 7 ' are coincident, and the inner cavities of the first sealing chamber 1 ', the guide vane assembly 2 ' and the heat shield assembly 3 ' are communicated.
For testing above-mentioned nuclear pump hydraulic unit, the embodiment of the utility model provides a hydrostatic test platform for nuclear power main pump water conservancy pressure-bearing unit, as shown in attached 1 and 2, the integral erection is in the special area is kept apart to subaerial minus 2.5 meters pit 100, ground 1.5 meters enclosure (not shown in the figure), creates a equipment and personnel relatively safe's hydrostatic test environment. The hydraulic test bed comprises a support 1, a test pump shell 2 and a test pump shaft 3.
Specifically, the support 1, vertically installed in the pit 100, includes an upper support 11 and a lower support 12. The lower end of the lower support 12 is connected with a bolt which is installed in a pre-buried mode on the inner bottom surface of the pit 100, the lower end of the upper support 11 is detachably connected with the upper end of the lower support 12 through a bolt and a gasket, and the height of the upper support 11 can be conveniently adjusted according to the height of the nuclear pump hydraulic unit.
The upper part of the test pump shell 2 is horn-shaped, and the lower part is cylindrical and is communicated up and down. The open end of the horn of the test pump shell 2 faces upwards and is integrally suspended at the top of the bracket 1, and the outer side of the edge of the upper end of the horn is connected with the upper end of the upper bracket 11 through bolts. The side wall of the lower part of the test pump body 2 is provided with a water inlet (not shown in the figure) and a water outlet 21 which are connected with corresponding pipelines, the side wall of the top end of the test pump body is provided with two air outlets 22 and a needle type exhaust valve (not shown in the figure), and each air outlet 22 is provided with a plug. The hydraulic pressure bearing unit of the nuclear power main pump is vertically arranged on the axial center direction of the test pump shell 1, the guide vane assembly 2 ' and the heat shield assembly 3 ' extend into the test pump shell 2, the main bolt 8 ' penetrates through the main flange 7 ' and the upper end of the test pump shell 2 and is locked by the main nut 9 ', so that the nuclear power main pump is firmly fixed on the test pump shell 2 in a hydraulic mode, and meanwhile, the first sealing chamber 1 ', the guide vane assembly 2 ', the heat shield assembly 3 ' and the main flange 7 ' of the hydraulic pressure bearing unit of the nuclear power main pump realize structural sealing. In the embodiment, in order to reduce the damage to the hydraulic pressure-bearing unit of the nuclear power main pump, a motor bearing backing ring 23 is arranged when the main flange 7' and the test pump shell 2 are installed.
The test pump shaft 3 is vertically arranged in the axial center direction of the test pump shell 2 and penetrates through a first sealing chamber 1 ', a guide vane assembly 2 ' and a heat shield assembly 3 ' of the nuclear power main pump hydraulic pressure-bearing unit, and the lower end of the test pump shaft extends to an outlet at the lower end of the test pump shell 2. In the embodiment, in order to protect the heat shield assembly 3 'of the hydraulic pressure bearing unit of the nuclear power main pump and prevent the heat shield assembly from being damaged in the assembling and testing processes, the heat shield protection frame 31 is installed on the corresponding part of the test pump shaft 3, and auxiliary support and isolation protection are provided for the heat shield assembly 3'.
And the lower sealing flange 4 is arranged at the outlet of the lowest end of the test pump shell 2 and is connected with the end part of the lower end of the test pump shell 2, and a sealing ring is arranged at the joint of the lower sealing flange and the test pump shell.
And the lower flange fastening plate 5 is arranged below the lower sealing flange 4 and connected with the lower end part of the test pump shaft 3, and the edge of the lower flange fastening plate supports against the lower sealing flange 4, so that the connection between the test pump shaft 3 and the test pump shell 2 and the lower end structure sealing are realized.
The upper flange 6 is arranged at the upper end of a first sealing chamber 1 ' of the nuclear power main pump hydraulic pressure bearing unit and sleeved on the test pump shaft 3 in a penetrating manner, the upper flange is connected with the upper end of the first sealing chamber 1 ' through bolts, and a sealing ring is arranged at the joint of the first sealing chamber 1 ' and the upper flange 6. The upper sealing ring 61 and the locking nut 62 are further installed on the portion, above the upper flange 6, of the test pump shaft 3 in a penetrating and sleeving mode, the locking nut 62 is in threaded connection with the test pump shaft 3, the upper sealing ring 61 is compressed, and therefore the upper end structure of the upper flange 6, the upper sealing ring 61 and the test pump shaft 3 is sealed.
When the test bed in the embodiment is used for time measurement:
the hydraulic pressure-bearing unit of the nuclear power main pump is firstly installed in a test bed and then is connected with a corresponding water injection pipeline, a high-pressure boosting pipeline and a low-pressure boosting pipeline, so that corresponding test operation can be carried out. And when necessary, the hydraulic pressure-bearing unit of the nuclear power inlet main pump is plugged and exhausted. For example, the evacuation during the filling process is carried out by mounting the P2 line companion flange 7 with a needle-type evacuation valve onto the free end of the P2 pressure line connection 4 ' and the heat shield companion 8 with a needle-type evacuation valve onto the outlet flange 32 ' of the heat shield assembly 3 '.
Before a test, water is injected into the test pump shell 2 and the inner cavity of the nuclear power main pump hydraulic pressure-bearing unit through the water inlet of the test pump shell 1, then the test pump shell 2 and the inner cavity of the nuclear power main pump hydraulic pressure-bearing unit are closed, the connection is switched through a P2 pressure pipeline, the test pressure of the hydraulic pressure of the motor water pump component is 1.5 times of the design pressure (the design pressure: 152 bar), the pressure is maintained for 15-30 minutes, the pressure drop phenomenon exists during observation, and the pressure-bearing performance of the component is tested. Hot water is introduced into the heat shielding assembly 3 'through the water inlet flange 31', the pressure is tested to be 4bar, the pressure drop phenomenon exists during observation, and the performance of the heat shielding coil pipe and the welding seam is tested.
Claims (7)
1. A hydrostatic test platform for nuclear power main pump water conservancy pressure-bearing unit, its characterized in that: comprises that
The support is used for supporting the test bed assembly and the nuclear power main pump hydraulic pressure bearing unit;
the upper end of the test pump shell is open, and the test pump shell is provided with a water inlet, a water outlet and an exhaust port, is arranged above the bracket and is used for clamping, fixing and pressurizing the hydraulic pressure-bearing unit of the nuclear power main pump;
the test pump shaft is arranged on the axial center of the test pump shell, penetrates through the nuclear power main pump hydraulic pressure bearing unit and is used for clamping and fixing the nuclear power main pump hydraulic pressure bearing unit;
the lower end of the test pump shaft extends to an outlet at the lower end of the test pump body and is provided with a lower end connecting and sealing structure; and the upper end of the joint of the lower upper part of the test pump shaft and the upper end of the hydraulic pressure-bearing unit of the nuclear power main pump is provided with a connecting and sealing structure.
2. The hydraulic test bed for the hydraulic pressure-bearing unit of the nuclear power main pump according to claim 1, characterized in that: the lower end connecting and sealing structure comprises a lower sealing flange, a sealing ring and a lower flange fastening plate, the lower sealing flange is arranged at an outlet at the lower end of the test pump shell, the sealing ring is arranged at the outlet, the lower end of the test pump shaft extends to the lower sealing flange, and the lower flange fastening plate is positioned below the lower sealing flange and is connected with the lower end of the test pump shaft and compresses the lower sealing flange.
3. The hydraulic test bed for the hydraulic pressure-bearing unit of the nuclear power main pump according to claim 1, characterized in that: the upper end connecting and sealing structure comprises an upper flange, a sealing ring, an upper sealing ring and a locking nut, wherein the upper flange, the sealing ring, the upper sealing ring and the locking nut are sleeved on the test pump shaft in a penetrating mode, the upper flange is connected with the nuclear power main pump hydraulic pressure-bearing unit and the sealing ring is installed on the upper flange, the upper sealing ring is located between the upper flange locking nuts, and the locking nut is connected with the test pump shaft.
4. The hydraulic test bed for the hydraulic pressure-bearing unit of the nuclear power main pump according to claim 1, characterized in that: and a heat shield protection frame is arranged on the test pump shaft corresponding to the heat shield assembly of the nuclear power main pump hydraulic pressure-bearing unit.
5. The hydraulic test bed for the hydraulic pressure-bearing unit of the nuclear power main pump according to claim 1, characterized in that: the support is formed by connecting an upper support and a lower support up and down.
6. The hydraulic test bed for the hydraulic pressure-bearing unit of the nuclear power main pump according to claim 1, characterized in that: and a motor supporting backing ring is arranged when the nuclear power main pump hydraulic pressure-bearing unit is connected with the test pump shell.
7. The hydraulic test bed for the hydraulic pressure-bearing unit of the nuclear power main pump according to any one of claims 1-6, is characterized in that: the hydraulic test bed is integrally arranged in a pit with the depth of minus 2.5 meters below the ground and an isolated special area with the wall with the depth of 1.5 meters above the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921270349.1U CN210440239U (en) | 2019-08-07 | 2019-08-07 | Hydraulic test bed for nuclear power main pump hydraulic pressure-bearing unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921270349.1U CN210440239U (en) | 2019-08-07 | 2019-08-07 | Hydraulic test bed for nuclear power main pump hydraulic pressure-bearing unit |
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| CN210440239U true CN210440239U (en) | 2020-05-01 |
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| CN201921270349.1U Active CN210440239U (en) | 2019-08-07 | 2019-08-07 | Hydraulic test bed for nuclear power main pump hydraulic pressure-bearing unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532769A (en) * | 2021-07-05 | 2021-10-22 | 哈尔滨电气动力装备有限公司 | Nuclear power station nuclear main pump seal chamber water pressure experiment method |
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2019
- 2019-08-07 CN CN201921270349.1U patent/CN210440239U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532769A (en) * | 2021-07-05 | 2021-10-22 | 哈尔滨电气动力装备有限公司 | Nuclear power station nuclear main pump seal chamber water pressure experiment method |
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