CN110441049B - Nuclear power station self-operated temperature regulating valve real-flow calibration test bench - Google Patents
Nuclear power station self-operated temperature regulating valve real-flow calibration test bench Download PDFInfo
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- CN110441049B CN110441049B CN201910598191.9A CN201910598191A CN110441049B CN 110441049 B CN110441049 B CN 110441049B CN 201910598191 A CN201910598191 A CN 201910598191A CN 110441049 B CN110441049 B CN 110441049B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Physics & Mathematics (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
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Abstract
The utility model discloses a real-flow calibration test bench for a self-operated temperature regulating valve of a nuclear power plant, which comprises a temperature control valve upstream pressure stabilizing pipeline, a temperature control valve downstream flow measuring pipeline, a temperature control bulb temperature control pipeline and a self-operated temperature control valve mounting pipeline; the test bench in the scheme can simulate the actual operation condition of the self-operated temperature control valve of the nuclear power station, solves the key problem of the actual flow verification of the flow characteristic of the self-operated temperature control valve of the nuclear power station, such as the on-site operation condition of the nuclear power station, verifies the driving effect and the response time of a temperature bulb, verifies the flow characteristic of the self-operated temperature control valve, and can be used for the actual flow verification of the flow characteristic of other types of regulating valves (such as regulating valves with executing mechanisms, manual regulating valves and the like).
Description
Technical Field
The utility model relates to the technical field of nuclear industry measurement, in particular to a real-flow calibration test stand for a self-operated temperature regulating valve of a nuclear power station.
Background
A pipeline heat exchanger of a nuclear sampling system of a nuclear power station is provided with a plurality of three-stage self-operated temperature control valves on the cold water side, and a temperature control valve temperature pack is arranged on the outlet side of a nuclear sampling pipeline of the heat exchanger to measure the outlet water temperature. The self-operated temperature control valve adopts a passive principle, senses the temperature of a nuclear sampling pipeline through a temperature bulb, and fills liquid in the temperature bulb generates driving force to control the opening of the valve according to thermal expansion and contraction of temperature change.
Because the special passive characteristic of the self-operated temperature control valve does not have valve positioner control, the valve can be automatically controlled only by sensing the water temperature by the temperature bulb, the flow characteristic of the temperature control valve completely depends on theoretical calculation, meanwhile, a core sampling pipeline where the temperature bulb is positioned and a cold water pipeline where the self-operated temperature control valve is positioned are different loops, the liquid of the temperature bulb is slowly driven, and the action effect of the valve is difficult to analyze and judge. For how to simulate the on-site operation condition of the nuclear power station, the consistency of theoretical calculation and actual operation of the temperature control valve is further verified, meanwhile, the valve driving effect of the temperature bulb is verified, and an effective technical means for actual flow calibration of the self-operated temperature regulating valve is lacking at present.
For example, an issued patent number is CN206515056U, a Chinese patent of a temperature control valve testing device is that an operator correctly inserts a temperature control valve to be detected into a temperature control valve jacket, after inserting the temperature control valve into place, the operator presses a clamping cylinder action button, the clamping cylinder drives the temperature control valve to be detected to extend into a water cylinder, an induction bag of the temperature control valve to be detected is ensured to be contacted with water in the water cylinder, meanwhile, a stirring fan blade starts to rotate in the forward and reverse directions at intervals, so that water in the water cylinder is ensured to continuously circulate around the induction bag, and a control unit correspondingly adjusts actions of a heating pipe and an electromagnetic valve according to the current water temperature condition so as to meet the temperature control valve testing environment under different water temperature conditions; since it only detects the performance of the thermostatic valve, not the performance parameters of the thermostatic valve in actual operating conditions.
Therefore, in view of the above, it is particularly important to find a test simulation structure capable of simulating the operation condition of the self-operated temperature control valve of the nuclear power plant and performing real-flow verification on the flow characteristic of the self-operated temperature control valve.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a real-flow calibration test bench for a self-operated temperature regulating valve of a nuclear power station, which can effectively simulate the operation condition of the self-operated temperature regulating valve of the nuclear power station and carry out experimental verification on the flow characteristic of the self-operated temperature regulating valve.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a nuclear power station self-operated temperature regulating valve real-flow calibration test bench, the test bench includes temperature-sensing valve upstream steady voltage pipeline, temperature-sensing valve downstream flow measurement pipeline, temperature-sensing bulb temperature control pipeline and self-operated temperature-sensing valve installation pipeline; the self-operated temperature control valve installation pipeline comprises a temperature control valve body, a temperature control valve capillary tube and a temperature control valve temperature bulb, wherein the temperature control valve temperature bulb is connected with the temperature control valve body through the temperature control valve capillary tube, the temperature control valve temperature bulb is installed in a temperature measuring groove of a temperature control pipeline of the temperature bulb, and the temperature control valve body is arranged between an upstream pressure stabilizing pipeline of the temperature control valve and a downstream flow measuring pipeline of the temperature control valve.
Further, the upstream pressure stabilizing pipeline of the temperature control valve comprises a water tank, an upstream water pipe, a high-pressure pump, a pump outlet switching valve, a temperature control valve upstream pressure gauge, a temperature control valve upstream back pressure regulating valve and a temperature control valve upstream pressure relief valve, wherein the upstream water pipe is communicated with the water tank, the high-pressure pump, the pump outlet switching valve and the temperature control valve upstream pressure gauge are sequentially and serially connected and installed on the upstream water pipe, the temperature control valve upstream back pressure regulating valve and the temperature control valve upstream pressure relief valve are parallelly connected and installed on the upstream water pipe, and the temperature control valve upstream pressure gauge is installed on the upstream water pipe pipeline between the temperature control valve upstream back pressure regulating valve and the temperature control valve upstream pressure relief valve.
Further, the temperature control valve downstream flow measurement pipeline comprises a downstream water pipe, a temperature control valve downstream pressure gauge, a temperature control valve downstream switch valve and a temperature control valve downstream flow measurement assembly, wherein the temperature control valve downstream pressure gauge, the temperature control valve downstream switch valve and the temperature control valve downstream flow measurement assembly are sequentially arranged on the downstream water pipe in series.
Further, the temperature control pipeline of the temperature control bulb comprises a tap water inlet, a tap water pipe communicated with the tap water inlet, an electric heater, a temperature measuring groove and a temperature measuring groove thermometer, wherein the electric heater and the temperature measuring groove are sequentially and serially arranged on the tap water pipe, and the downstream flow measuring component of the temperature control valve is communicated with the tap water pipe pipeline between the electric heater and the temperature measuring groove.
Further, the temperature control valve downstream flow measurement assembly comprises a large flow measurement pipeline and a small flow measurement pipeline, the large flow measurement pipeline comprises a temperature control valve downstream large flow pipeline upstream switch valve, a temperature control valve large flow measurement instrument, a temperature control valve downstream large flow pipeline pressure gauge and a temperature control valve downstream large flow pipeline downstream switch valve, and the small flow measurement pipeline comprises a temperature control valve downstream small flow pipeline upstream switch valve, a temperature control valve small flow measurement instrument, a temperature control valve downstream small flow pipeline pressure gauge and a temperature control valve downstream small flow pipeline downstream switch valve, wherein the large flow measurement pipeline and the small flow measurement pipeline are connected in parallel on the downstream water pipe.
Further, the temperature control pipeline of the temperature bulb further comprises a cold and hot water mixing tee joint, wherein two inlet ends of the cold and hot water mixing tee joint are respectively communicated with the downstream flow measuring assembly of the temperature control valve and the electric heater, and the water outlet end of the cold and hot water mixing tee joint is communicated with the temperature measuring groove.
Further, the temperature control valve downstream flow measurement pipeline further comprises a temperature control valve downstream pressure relief valve, wherein the temperature control valve downstream pressure relief valve is installed on the downstream water delivery pipeline in parallel.
Furthermore, the temperature control valve upstream pressure gauge, the temperature control valve downstream pressure gauge, the temperature control valve small flow measuring instrument, the temperature control valve downstream small flow pipeline pressure gauge, the temperature control valve large flow measuring instrument, the temperature control valve downstream large flow pipeline pressure gauge and the temperature measuring groove thermometer are digital display ammeter.
Compared with the prior art, the beneficial technical effects that this scheme had are: the test bench in the scheme can simulate the actual operation condition of the self-operated temperature control valve of the nuclear power station, solves the key problem of the actual flow verification of the flow characteristic of the self-operated temperature control valve of the nuclear power station, such as the on-site operation condition of the nuclear power station, verifies the driving effect and the response time of a temperature bulb, verifies the flow characteristic of the self-operated temperature control valve, and can be used for the actual flow verification of the flow characteristic of other types of regulating valves (such as regulating valves with executing mechanisms, manual regulating valves and the like).
Drawings
FIG. 1 is a schematic diagram of the working principle of the test bench in the utility model.
In the figure:
100-temperature control valve upstream pressure stabilizing pipeline, 200-temperature control valve downstream flow measuring pipeline, 300-temperature bulb temperature control pipeline, 400-self-operated temperature control valve mounting pipeline, 1-1-water tank, 1-2-high pressure pump, 1-3-pump outlet switching valve, 1-4-temperature control valve upstream pressure gauge, 1-5-temperature control valve upstream back pressure regulating valve, 1-6-temperature control valve upstream pressure relief valve, 1-7-upstream water pipe, 2-1-temperature control valve downstream pressure gauge, 2-2-temperature control valve downstream switching valve, 2-3-temperature control valve downstream small flow pipeline upstream switching valve, 2-4-temperature control valve small flow measuring instrument, 2-5-temperature control valve downstream small flow pipeline pressure gauge, 2-6-temperature control valve downstream small flow pipeline downstream switch valve, 2-7-temperature control valve downstream large flow pipeline upstream switch valve, 2-8-temperature control valve large flow measuring instrument, 2-9-temperature control valve downstream large flow pipeline pressure gauge, 2-10-temperature control valve downstream large flow pipeline downstream switch valve, 2-11-temperature control valve downstream relief valve, 2-12-downstream water delivery pipe, 3-1-tap water inlet, 3-2-electric heater, 3-3-hot water mixing tee joint, 3-4-temperature measuring tank, 3-5-temperature measuring tank thermometer, 4-1-temperature control valve body, 4-2-temperature control valve capillary tube, 4-3-temperature control valve temperature package.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the detailed description.
The technical scheme aims at the defect that the flow characteristic of the conventional self-operated temperature control valve is completely calculated by theory without valve positioner control due to the non-motility of the conventional self-operated temperature control valve, and an effective technical means for real-flow calibration of the self-operated temperature control valve is lacked, so that the self-operated temperature control valve real-flow calibration test bench for the nuclear power plant is provided, and can effectively simulate the operation condition of the self-operated temperature control valve of the nuclear power plant and perform experimental verification on the flow characteristic of the self-operated temperature control valve.
Referring to fig. 1, the self-operated temperature control valve real-flow calibration test stand in the present embodiment includes a temperature control valve upstream pressure stabilizing pipeline 100, a temperature control valve downstream flow measuring pipeline 200, a temperature bulb temperature control pipeline 300, and a self-operated temperature control valve mounting pipeline 400, wherein the temperature control valve upstream pressure stabilizing pipeline 100 includes a water tank 1-1, an upstream water pipe 1-7, a high pressure pump 1-2, a pump outlet switching valve 1-3, a temperature control valve upstream pressure gauge 1-4, a temperature control valve upstream backpressure regulating valve 1-5, and a temperature control valve upstream pressure relief valve 1-6, the upstream water pipe 1-7 is communicated with the water tank 1-1, the high pressure pump 1-2, the pump outlet switching valve 1-3, and the temperature control valve upstream pressure gauge 1-4 are sequentially connected in series and mounted on the upstream water pipe 1-7, the temperature control valve upstream backpressure regulating valve 1-5 and the temperature control valve upstream pressure relief valve 1-6 are mounted on the upstream water pipe 1-7 in parallel, and the valve upstream pressure gauge 1-4 is mounted between the temperature control valve upstream pressure relief valve 1-6 and the water pipe upstream pressure relief valve 1-6; the temperature control valve downstream flow measurement pipeline 200 comprises a downstream water pipe 2-12, a temperature control valve downstream pressure gauge 2-1, a temperature control valve downstream pressure relief valve 2-11, a temperature control valve downstream switching valve 2-2 and a temperature control valve downstream flow measurement assembly, which are sequentially connected in series on the downstream water pipe 2-12, wherein the temperature control valve downstream pressure relief valve 2-11 is connected in parallel on the downstream water pipe 2-12, the temperature control valve downstream flow measurement assembly is used for monitoring the pressure and the flow of the temperature control valve in real time so as to judge whether the temperature control valve downstream pressure and the temperature of a temperature pack are constant or not under the condition of ensuring that the temperature control valve downstream pressure and the flow meet the design requirements, the temperature control valve downstream flow measurement assembly in the embodiment comprises two parallel large/small flow measurement pipelines, and a large flow measurement pipeline and a small flow measurement pipeline, the large flow measurement pipeline comprises a large flow valve downstream switching valve 2-7, a large flow measurement pipeline downstream pressure gauge 2-8, a small flow measurement pipeline 2-9, a small flow meter downstream pressure and a small flow meter 2-6, and a small flow measurement pipeline 2-3, and a small flow meter downstream pressure measurement pipeline 2-6 are connected in parallel on the temperature control valve downstream pressure gauge 2-12; the temperature control pipeline 300 of the temperature bulb comprises a tap water inlet 3-1, a tap water pipe communicated with a tap water inlet, an electric heater 3-2, a cold and hot water mixing tee joint 3-3, a temperature measuring tank 3-4 and a temperature measuring tank thermometer 3-5, wherein the electric heater 3-2 and the temperature measuring tank 3-4 are sequentially and serially arranged on the tap water pipe, and a downstream flow measuring component of the temperature control valve is communicated with the tap water pipe pipeline between the electric heater 3-2 and the temperature measuring tank 3-4; the self-operated temperature control valve installation pipeline 400 comprises a temperature control valve body 4-1, a temperature control valve capillary 4-2 and a temperature control valve temperature bulb 4-3, wherein the temperature control valve temperature bulb 4-3 is connected with the temperature control valve body 4-1 through the temperature control valve capillary 4-2, the temperature control valve temperature bulb 4-3 is installed in a temperature measuring groove 3-4, and the temperature control valve body 4-1 is arranged between the water outlet end of an upstream water pipe 1-7 in the temperature control valve upstream pressure stabilizing pipeline 100 and the water inlet end of a downstream water pipe 2-12 in the temperature control valve downstream flow measuring pipeline 200; the two inlet ends of the cold and hot water mixing tee joint 3-3 are respectively communicated with the downstream flow measuring component of the temperature control valve and the electric heater 3-2, and the water outlet end of the cold and hot water mixing tee joint is communicated with the temperature measuring groove 3-4; so that the temperature of the temperature controller and the hot water amount can be manually adjusted during the test. The water temperature of the temperature measuring groove 3-4 of the temperature bulb is adjusted by adopting a cold water and hot water mixing mode, so that the temperature bulb can reach the temperature required by design.
In addition, in order to facilitate visual observation of test result parameters, the temperature control valve upstream pressure gauge 1-4, the temperature control valve downstream pressure gauge 2-1, the temperature control valve small flow measuring instrument 2-4, the temperature control valve downstream small flow pipeline pressure gauge 2-5, the temperature control valve large flow measuring instrument 2-8, the temperature control valve downstream large flow pipeline pressure gauge 2-9 and the temperature measuring groove thermometer 3-5 in the embodiment are digital display electric meters.
During the test, firstly, the upstream backpressure regulating valve 1-5 of the temperature control valve is confirmed to meet the operation condition requirement, namely, the upstream pressure is stabilized under the required condition value, then the test pipeline switching valve is opened, namely, the pump outlet switching valve 1-3, the temperature control valve upstream pressure relief valve 1-6, the temperature control valve downstream switching valve 2-2, the temperature control valve downstream small flow pipeline upstream switching valve 2-3 (or the temperature control valve downstream large flow pipeline upstream switching valve 2-7) and the temperature control valve downstream small flow pipeline downstream switching valve 2-6 (or the temperature control valve downstream large flow pipeline downstream switching valve 2-10) are opened, so that the whole pipeline is ensured to be communicated, the high pressure pump 1-2 is opened, water in the water tank 1-1 is supplied under the action of the high pressure pump 1-2, meanwhile, the electric heater 3-2 is started, after the water temperature in the temperature measuring tank 3-4 is regulated to the test simulation required temperature, the temperature is reached, the temperature control valve upstream pressure relief valve 1-6 is closed, the whole set value is automatically regulated, and after the system steady operation is performed, the whole set value is recorded, and the temperature control valve 2-2 and the flow meter 2-2 is measured, or the actual flow meter 2-2 is verified to be in order to verify whether the operation condition data is correct or not.
In summary, the test bench in the scheme can simulate the actual operation condition of the self-operated temperature control valve of the nuclear power station, solves the key problem of the flow characteristic real-flow verification of the self-operated temperature control valve of the nuclear power station, such as simulating the on-site operation condition of the nuclear power station, verifying the driving effect and response time of a temperature bulb, verifying the flow characteristic of the self-operated temperature control valve, and can be used for the real-flow verification of the flow characteristic of other types of regulating valves (such as regulating valves with executing mechanisms, manual regulating valves and the like).
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (4)
1. The utility model provides a nuclear power station self-operated temperature regulating valve real-current calibration test rack which characterized in that: the test bed comprises a temperature control valve upstream pressure stabilizing pipeline, a temperature control valve downstream flow measuring pipeline, a temperature control bag temperature control pipeline and a self-operated temperature control valve mounting pipeline; the self-operated temperature control valve mounting pipeline comprises a temperature control valve body, a temperature control valve capillary tube and a temperature control valve temperature bulb, wherein the temperature control valve temperature bulb is connected with the temperature control valve body through the temperature control valve capillary tube, the temperature control valve temperature bulb is mounted in a temperature measuring groove of the temperature control valve temperature control pipeline, and the temperature control valve body is arranged between the temperature control valve upstream pressure stabilizing pipeline and the temperature control valve downstream flow measuring pipeline;
the upstream pressure stabilizing pipeline of the temperature control valve comprises a water tank, an upstream water pipe, a high-pressure pump, a pump outlet switching valve, a temperature control valve upstream pressure gauge, a temperature control valve upstream back pressure regulating valve and a temperature control valve upstream pressure relief valve, wherein the upstream water pipe is communicated with the water tank, the high-pressure pump, the pump outlet switching valve and the temperature control valve upstream pressure gauge are sequentially and serially arranged on the upstream water pipe, the temperature control valve upstream back pressure regulating valve and the temperature control valve upstream pressure relief valve are parallelly arranged on the upstream water pipe, and the temperature control valve upstream pressure gauge is arranged on the upstream water pipe pipeline between the temperature control valve upstream back pressure regulating valve and the temperature control valve upstream pressure relief valve;
the temperature control valve downstream flow measurement pipeline comprises a downstream water pipe, a temperature control valve downstream pressure gauge, a temperature control valve downstream switching valve and a temperature control valve downstream flow measurement assembly which are sequentially and serially arranged on the downstream water pipe, and the temperature control valve downstream flow measurement assembly comprises two large flow measurement pipelines and small flow measurement pipelines which are arranged in parallel;
the temperature control pipeline of the temperature bulb comprises a tap water inlet, a tap water pipe communicated with the tap water inlet, an electric heater, a temperature measuring tank and a temperature measuring tank thermometer, wherein the electric heater and the temperature measuring tank are sequentially and serially arranged on the tap water pipe, and a downstream flow measuring component of the temperature control valve is communicated with the tap water pipe pipeline between the electric heater and the temperature measuring tank;
the temperature control pipeline of the temperature bulb further comprises a cold and hot water mixing tee joint, wherein two inlet ends of the cold and hot water mixing tee joint are respectively communicated with the downstream flow measuring assembly of the temperature control valve and the electric heater, and the water outlet end of the cold and hot water mixing tee joint is communicated with the temperature measuring groove.
2. The nuclear power station self-operated temperature regulating valve real-flow calibration test stand according to claim 1, wherein: the high-flow measuring pipeline comprises a temperature control valve downstream high-flow pipeline upstream switching valve, a temperature control valve high-flow measuring instrument, a temperature control valve downstream high-flow pipeline pressure gauge and a temperature control valve downstream high-flow pipeline downstream switching valve, and the low-flow measuring pipeline comprises a temperature control valve downstream low-flow pipeline upstream switching valve, a temperature control valve low-flow measuring instrument, a temperature control valve downstream low-flow pipeline pressure gauge and a temperature control valve downstream low-flow pipeline downstream switching valve, wherein the high-flow measuring pipeline and the low-flow measuring pipeline are connected in parallel on the downstream water conveying pipeline.
3. The nuclear power station self-operated temperature regulating valve real-flow calibration test stand according to claim 1, wherein: the downstream flow measuring pipeline of the temperature control valve further comprises a downstream pressure relief valve of the temperature control valve, wherein the downstream pressure relief valve of the temperature control valve is arranged on the downstream water conveying pipeline in parallel.
4. The nuclear power station self-operated temperature regulating valve real-flow calibration test stand according to claim 2, wherein: the temperature control valve upstream pressure gauge, the temperature control valve downstream pressure gauge, the temperature control valve low flow measuring instrument, the temperature control valve downstream low flow pipeline pressure gauge, the temperature control valve high flow measuring instrument and the temperature control valve downstream high flow pipeline pressure gauge and the temperature measuring groove thermometer are digital display ammeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910598191.9A CN110441049B (en) | 2019-07-04 | 2019-07-04 | Nuclear power station self-operated temperature regulating valve real-flow calibration test bench |
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| CN201910598191.9A CN110441049B (en) | 2019-07-04 | 2019-07-04 | Nuclear power station self-operated temperature regulating valve real-flow calibration test bench |
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| CN110441049B true CN110441049B (en) | 2023-08-11 |
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| CN115341515B (en) * | 2022-09-01 | 2023-07-18 | 中国长江电力股份有限公司 | Pressure relief device suitable for water supply system with back pressure technology and control method |
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