CN210243109U - Hydraulic pressure test system - Google Patents
Hydraulic pressure test system Download PDFInfo
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- CN210243109U CN210243109U CN201921270348.7U CN201921270348U CN210243109U CN 210243109 U CN210243109 U CN 210243109U CN 201921270348 U CN201921270348 U CN 201921270348U CN 210243109 U CN210243109 U CN 210243109U
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Abstract
The utility model discloses a hydrostatic test system, which comprises a hydrostatic test bed and is used for loading a hydraulic pressure bearing unit of a nuclear power main pump; the water filling pipeline is connected with the hydraulic test bed and is used for filling water into the hydraulic test bed and the nuclear power main pump hydraulic pressure bearing unit; the boosting pipeline is respectively assembled and connected with the nuclear power main pump hydraulic pressure-bearing unit, the first sealing chamber and the heat shield and is respectively used for high-pressure boosting water injection and low-pressure boosting water injection of the nuclear power main pump hydraulic pressure-bearing unit; the sewage discharge pipeline is connected with the hydraulic test bed and used for discharging water of the hydraulic test bed; and the computer data measurement and control system is used for acquiring the test data of the boosting pipeline and the hydraulic pressure-bearing unit of the nuclear power main pump, and recording and displaying the test data. The utility model provides a hydrostatic test system, hydrostatic test platform and pipeline design satisfy main pump water conservancy unit pressure-bearing member legal hydrostatic test technology and safety requirement, and the system data acquisition degree of automation of observing and controlling is high, and measuring device's measurement accuracy satisfies main pump legal hydrostatic test outline requirement.
Description
Technical Field
The utility model relates to a testing arrangement of nuclear power main pump, in particular to a hydrostatic test system 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
The utility model discloses an overcome the problem that prior art exists, provide a hydrostatic test system, hydrostatic test platform and pipeline design satisfy main pump water conservancy unit pressure-bearing component legal hydrostatic test technology and safety requirement, and the measurement and control system data acquisition degree of automation is high, and measuring device's measurement accuracy satisfies main pump legal hydrostatic test outline requirement.
The utility model adopts the technical proposal that:
hydrostatic test system for the pressure-bearing test of nuclear power main pump water conservancy pressure-bearing unit includes:
the hydraulic test bed is used for loading the hydraulic pressure-bearing unit of the nuclear power main pump;
the water filling pipeline is connected with the hydraulic test bed and is used for filling water into the hydraulic test bed and the nuclear power main pump hydraulic pressure bearing unit;
the boosting pipeline is respectively assembled and connected with the nuclear power main pump hydraulic pressure-bearing unit, the first sealing chamber and the heat shield and is respectively used for high-pressure boosting water injection and low-pressure boosting water injection of the nuclear power main pump hydraulic pressure-bearing unit;
the sewage discharge pipeline is connected with the hydraulic test bed and used for discharging water of the hydraulic test bed;
and the computer data measurement and control system is used for acquiring the test data of the boosting pipeline and the hydraulic pressure-bearing unit of the nuclear power main pump, and recording and displaying the test data.
And furthermore, the hydraulic pressure monitoring system is used for monitoring the real-time conditions of the main pump component hydraulic pressure test bed and the nuclear pump hydraulic pressure bearing unit.
Further, the hydraulic test bed comprises
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.
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 water filling pipeline is connected with a water inlet of the test pump shell and sequentially comprises a ball valve, a tee joint and a stop valve which are connected through pipelines; the boosting pipeline is respectively connected with a P2 pressure pipeline and a water inlet flange and comprises a pressure transmitter, a heater, a ball valve, a water storage tank, a ball valve, a direction valve, a plunger pump, a filter and a ball valve which are sequentially connected through pipelines; the blowdown pipeline is connected with an interface of a tee joint on the flushing pipeline and comprises a stop valve, a water collecting tank and a centrifugal pump which are sequentially connected through pipelines.
The utility model has the advantages that:
(1) the utility model relates to a rationally, the design of hydrostatic test platform can satisfy and carry out main key hydraulic unit pressure-bearing boundary member static pressure legal hydrostatic test requirement of main pump, carries out the comprehensive design upgrading transformation to its experimental frock, test bench structure and observing and controlling system to fully consider the safe and reliable performance, with verifying nuclear main pump key hydraulic unit pressure-bearing boundary member performance, confirm that its bearing capacity satisfies experimental outline technical requirement.
(2) The utility model discloses in, the system of observing and controling adopts advanced DCS field bus + host computer control mode, and automatic acquisition test data has timely analytic function, has improved system data acquisition precision and operating performance greatly, has improved stability, reliability and the automatic control degree of this test bench greatly. The performance of the hydraulic unit pressure-bearing member of the tested main pump can be mastered in the test stage by combining the powerful drawing and analyzing functions of a computer, and the test efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is the utility model discloses in, hydrostatic test system's connection structure sketch map.
Fig. 2 is the structure schematic diagram of the hydraulic test bed of the present invention.
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.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention.
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.
In order to test the hydraulic pressure-bearing unit main of the nuclear power main pump, the embodiment provides a hydraulic test system, as shown in fig. 1 and 2, which comprises a hydraulic test bed, a water filling pipeline, two boosting pipelines, a sewage discharge pipeline, a computer data measurement and control system and a video monitoring system.
Specifically, the hydrostatic test bed is integrally installed in a negative 2.5 m pit 100 below the ground and a 1.5 m fence (not shown) isolated special area on the ground, so as to create a hydrostatic test environment with relatively safe equipment and personnel. The hydraulic test bed comprises a support 1, a test pump shell 2 and a test pump shaft 3.
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.
And the water filling pipeline is connected with a water inlet of the test pump shell 2 and sequentially connected with a stop valve 7, a tee joint 8 and a ball valve 9 through pipelines in the direction away from the hydraulic test bench.
The boosting pipeline is respectively connected with a P2 pressure pipeline connection 4 'and a water inlet flange 31', the water flow reversely flows to a first sealing chamber 1 'and a heat shield assembly 3', and the boosting pipeline comprises a pressure transmitter 10, a heater 13, a ball valve 9, a water storage tank 14, the ball valve 9, a directional valve 15, a plunger pump 16, a filter 17 and a ball valve 7 which are sequentially connected through pipelines in the direction away from the hydraulic test bench. The flushing line and the two pressure raising lines are connected at their starting ends to a further reservoir 14. In the present embodiment, a safety valve may be provided in the connection pipe to ensure the operational safety of the pressure-increasing pipe.
And the sewage discharge pipeline is connected with one interface of the tee joint on the flushing pipeline and sequentially comprises a stop valve 7, a water collecting tank 18 and a centrifugal pump 19 in the direction far away from the hydrostatic test bed.
A computer data measurement and control system measures process parameters such as pressure and temperature of a chamber measuring point formed by two boosting pipelines, a first sealing chamber, a test pump shell and a high-pressure low-pressure boundary of a heat shield coil pipe by adopting the existing DCS field bus and an upper computer in the prior art, test data are transmitted to a computer system by a pressure transmitter, a temperature sensor and the like, and test pressure and temperature data curves are automatically recorded and displayed.
The video monitoring system adopts a television camera and a portable camera monitoring system in the prior art and is used for monitoring the real-time conditions of a main pump component hydrostatic test bed and a nuclear pump hydraulic pressure bearing unit. The whole safe operation condition of the hydrostatic test station can be monitored from the upper part of the test station by replacing a camera (analog signal control is digital signal control) according to the condition of the test station, and a matched hard disk video recorder and a large-screen monitoring television are replaced; still set up portable camera monitored control system on the spot for 1# sealed room deflection measurement and control device amesdial reading.
In this embodiment, the operation mode of the hydraulic test system is as follows:
the hydraulic test system is used for testing the pressure-bearing performance of the pressure-bearing member of the main pump hydraulic unit, the hydraulic test pressure of the water pump member is 1.5 times of the design pressure (the design pressure: 152 bar), and the pressure is maintained for 15-30 minutes; the hydraulic test pressure of the heat shielding coil is 4bar, the hydraulic test pressure is used for testing the performance of the heat shielding coil and a welding seam, and no leakage exists from the outside of the coil to the inside of the coil (the high-pressure hydraulic test is carried out before the assembly of the heat shielding coil); the Hualong hydrostatic test pump shell and the product pressure-bearing part are sealed to be used as a part of a hydrostatic test assembly pressure-bearing boundary, participate in the hydrostatic test together, and need to meet the requirements of the hydrostatic test.
A water filling branch: the branch pipeline is used for rapidly filling water into a cavity formed by the water storage tank and the water supply pipeline from the water inlet port at the bottom of the test pump shell to the test pump shell and the pressure-bearing components such as the first sealing chamber and the like before the test. And (3) closing the pipeline high-pressure valve in the formal hydraulic test process, and draining water from the test pump shell after the hydraulic test is finished.
High-voltage boosting branch circuit: the branch pipeline is used for filling water, boosting and maintaining pressure in a high-pressure chamber formed by a water storage tank, a high-pressure plunger metering pump branch pipeline, a P2 pressure pipeline, a water injection interface and pressure-bearing components such as a pump shell and a sealing chamber before a test; the pipeline is provided with a safety valve overvoltage protection device; and in the water filling stage before the hydrostatic test, air is exhausted from the first sealing chamber water injection blocking plate flange and the upper flange high-pressure needle valve connector, and after the hydrostatic test pressure maintaining is finished, the pressure is reduced from the high-pressure water inlet branch valve block needle valve connector at a standard speed.
Low-voltage boosting branch circuit: the branch pipeline is used for forming a high-pressure chamber by a water storage tank from a water inlet flange interface of the heat shielding coil pipe to a pressure-bearing part such as the heat shielding coil pipe and the like through the branch pipeline of the low-pressure plunger metering pump before a test; the pipeline is provided with a safety valve overvoltage protection device; and in the water filling stage before the hydrostatic test, exhausting gas from the interface of the low-pressure needle valve of the flange of the heat shield water outlet blocking plate, and reducing the pressure from the interface of the low-pressure water inlet branch valve block needle valve at a standard speed after the hydrostatic test is finished.
And a sewage draining loop, wherein the whole water pressure test bed drains water from the water collecting pit to the sewage draining well through a sewage draining pump.
And the computer data measurement and control system tests and records the pressure and the temperature in the water injection process.
Claims (8)
1. Hydrostatic test system for the pressure-bearing test of nuclear power main pump water conservancy pressure-bearing unit, its characterized in that includes:
the hydraulic test bed is used for loading the hydraulic pressure-bearing unit of the nuclear power main pump;
the water filling pipeline is connected with the hydraulic test bed and is used for filling water into the hydraulic test bed and the nuclear power main pump hydraulic pressure bearing unit;
the boosting pipeline is respectively assembled and connected with the nuclear power main pump hydraulic pressure-bearing unit, the first sealing chamber and the heat shield and is respectively used for high-pressure boosting water injection and low-pressure boosting water injection of the nuclear power main pump hydraulic pressure-bearing unit;
the sewage discharge pipeline is connected with the hydraulic test bed and used for discharging water of the hydraulic test bed;
and the computer data measurement and control system is used for acquiring the test data of the boosting pipeline and the hydraulic pressure-bearing unit of the nuclear power main pump, and recording and displaying the test data.
2. The hydrostatic test system of claim 1, wherein: the system further comprises a video monitoring system for monitoring the real-time conditions of the main pump component hydraulic test bed and the nuclear pump hydraulic pressure bearing unit.
3. The hydrostatic test system of claim 1 or 2, wherein: the hydrostatic test bed comprises
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.
4. The hydrostatic test system of claim 3, wherein: 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.
5. The hydrostatic test system of claim 3, wherein: 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.
6. The hydrostatic test system of claim 3, wherein: 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.
7. The hydrostatic test system of claim 3, wherein: 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.
8. The hydrostatic test system of claim 3, wherein: the water filling pipeline is connected with a water inlet of the test pump shell and sequentially comprises a ball valve, a tee joint and a stop valve which are connected through pipelines; the boosting pipeline is respectively connected with a P2 pressure pipeline and a water inlet flange and comprises a pressure transmitter, a heater, a ball valve, a water storage tank, a ball valve, a direction valve, a plunger pump, a filter and a ball valve which are sequentially connected through pipelines; the blowdown pipeline is connected with an interface of a tee joint on the flushing pipeline and comprises a stop valve, a water collecting tank and a centrifugal pump which are sequentially connected through pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921270348.7U CN210243109U (en) | 2019-08-07 | 2019-08-07 | Hydraulic pressure test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921270348.7U CN210243109U (en) | 2019-08-07 | 2019-08-07 | Hydraulic pressure test system |
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| CN210243109U true CN210243109U (en) | 2020-04-03 |
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| CN201921270348.7U Active CN210243109U (en) | 2019-08-07 | 2019-08-07 | Hydraulic pressure test system |
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Cited By (2)
| 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 |
| CN114018567A (en) * | 2021-11-15 | 2022-02-08 | 西安长峰机电研究所 | Valve load simulation device with movable valve rod |
-
2019
- 2019-08-07 CN CN201921270348.7U patent/CN210243109U/en active Active
Cited By (3)
| 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 |
| CN113532769B (en) * | 2021-07-05 | 2022-11-25 | 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 |
| CN114018567A (en) * | 2021-11-15 | 2022-02-08 | 西安长峰机电研究所 | Valve load simulation device with movable valve rod |
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