CN107131119A - High-temperature melting salt pump compbined test detection means under a kind of long-shaft liquid - Google Patents
High-temperature melting salt pump compbined test detection means under a kind of long-shaft liquid Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 108
- 150000003839 salts Chemical class 0.000 title claims abstract description 89
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 title abstract description 12
- 238000002844 melting Methods 0.000 title description 2
- 230000008018 melting Effects 0.000 title description 2
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 abstract description 22
- 238000011156 evaluation Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000002609 medium Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000011056 performance test Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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Abstract
本发明涉及一种长轴液下高温熔盐泵综合试验检测装置，包括测试泵和熔盐罐，所述测试泵位于所述熔盐罐内，所述熔盐罐上开有回路管进口，所述测试泵的输出口与所述回路管进口之间通过回路管连接；所述回路管上安装有压力表、流量计、止回阀、流量调节阀和检修阀，所述熔盐罐上安装有压力表和液位计。本发明实现高温条件试验，并将泵试验装置与阀门试验装置结合，节约装置占有场地和运行耗能，将熔盐泵及阀门试验条件与工作条件统一，多高温条件下的泵阀性能提供精确的评价。在关键部位设置监测传感器，对测试装置及被测设备的运行稳定性进行监测，结合性能评价结果对测试对象运行稳定性能进行评价以及保证测试设备的安全运行。
The invention relates to a comprehensive test and detection device for a long-axis submerged high-temperature molten salt pump, which includes a test pump and a molten salt tank. The test pump is located in the molten salt tank, and a circuit pipe inlet is opened on the molten salt tank. The output port of the test pump is connected with the inlet of the circuit pipe through a circuit pipe; a pressure gauge, a flow meter, a check valve, a flow regulating valve and a maintenance valve are installed on the circuit pipe; Installed with pressure gauge and liquid level gauge. The invention realizes the test under high temperature conditions, and combines the pump test device with the valve test device, saves the space occupied by the device and the energy consumption of operation, unifies the test conditions of molten salt pumps and valves with the working conditions, and provides accurate pump and valve performance under multi-high temperature conditions. evaluation of. Set up monitoring sensors at key parts to monitor the operation stability of the test device and the equipment under test, and combine the performance evaluation results to evaluate the operation stability of the test object and ensure the safe operation of the test equipment.
Description
技术领域technical field
本发明涉及一种高温熔盐泵试验装置，属于泵试验装置技术领域。The invention relates to a high-temperature molten salt pump test device, which belongs to the technical field of pump test devices.
背景技术Background technique
长轴液下高温熔盐泵是太阳能光热发电系统中输送高温熔盐的关键性设备，其输送介质为高温条件下的熔盐，运行条件极为苛刻，在高温条件下长轴液下高温泵的运行性能、关键部位温度、泵体振动、噪声等问题问题比较突出，因此长轴液下高温熔盐泵的关键为运行性能、关键部位温度、泵体振动、噪声指标的监测。目前国内外尚未有完善的高温条件试验台可以对以上性能进行检测。The long-axis submerged high-temperature molten salt pump is the key equipment for transporting high-temperature molten salt in solar thermal power generation systems. Its transport medium is molten salt under high-temperature conditions, and the operating conditions are extremely harsh. The operating performance, temperature of key parts, pump body vibration, noise and other problems are more prominent. Therefore, the key to the long-axis submerged high temperature molten salt pump is the monitoring of operating performance, temperature of key parts, pump body vibration, and noise indicators. At present, there is no perfect high-temperature condition test bench at home and abroad to test the above performance.
经检索，熔盐泵外特性及内部流动的试验及数值模拟（邵春雷等.熔盐泵外特性及内部流动的试验及数值模拟[J].航空动力学报,2016,31(8):1935-1942.）一文中涉及的熔盐泵试验装置主要由电机、模型泵、压力传感器、转子流量计、管路、调节阀、水箱、扭矩转速传感器以及PIV测试系统构成。但该试验装置只能采用水为介质进行PIV试验，不能能满足高温条件下的试验要求，而且该试验装置中不能完成阀门的同台测试，且无法对振动、噪声等关键指标进行监测，无法对高温熔盐泵进行高温条件下性能测试。After retrieval, test and numerical simulation of external characteristics and internal flow of molten salt pump (Shao Chunlei et al. Test and numerical simulation of external characteristics and internal flow of molten salt pump[J]. Aerodynamics Journal, 2016,31(8):1935 -1942.) The molten salt pump test device involved in the article is mainly composed of a motor, a model pump, a pressure sensor, a rotameter, a pipeline, a regulating valve, a water tank, a torque speed sensor and a PIV test system. However, this test device can only use water as the medium for PIV test, which cannot meet the test requirements under high temperature conditions. Moreover, the same test of valves cannot be completed in this test device, and key indicators such as vibration and noise cannot be monitored. Perform performance tests on high temperature molten salt pumps under high temperature conditions.
发明内容Contents of the invention
本发明的目的在于提供一种长轴液下高温熔盐泵综合试验检测装置，通过对熔盐泵的真实工作条件进行模拟试验和性能指标参数采集，实现对熔盐泵性能的精确评价。The object of the present invention is to provide a long-axis submerged high-temperature molten salt pump comprehensive test and detection device, which can accurately evaluate the performance of the molten salt pump by conducting simulation tests on the actual working conditions of the molten salt pump and collecting performance index parameters.
为实现上述发明目的，本发明采取的技术方案为：一种长轴液下高温熔盐泵综合试验检测装置，包括测试泵和熔盐罐，所述测试泵位于所述熔盐罐内，所述熔盐罐上开有回路管进口，所述测试泵的输出口与所述回路管进口之间通过回路管连接；所述回路管上安装有压力表、流量计、止回阀、流量调节阀和检修阀，所述熔盐罐上安装有压力表和液位计。In order to achieve the purpose of the above invention, the technical solution adopted by the present invention is: a long-axis submerged high-temperature molten salt pump comprehensive test and detection device, including a test pump and a molten salt tank, the test pump is located in the molten salt tank, and the There is a circuit pipe inlet on the molten salt tank, and the output port of the test pump is connected to the circuit pipe inlet through a circuit pipe; a pressure gauge, a flow meter, a check valve, a flow regulating Valves and inspection valves, pressure gauges and liquid level gauges are installed on the molten salt tank.
上述方案中，所述压力表和所述流量计之间安装有回流管，所述回流管的输出端与所述熔盐罐连通。In the above scheme, a return pipe is installed between the pressure gauge and the flow meter, and the output end of the return pipe communicates with the molten salt tank.
上述方案中，所述止回阀两侧的回路管上还并联有阀门试验旁路管道，所述阀门试验旁路管道上依次安装有第一截止阀、被试阀和第二截止阀，所述被试阀上安装有压差计。In the above scheme, the valve test bypass pipelines are connected in parallel on the return pipes on both sides of the check valve, and the valve test bypass pipelines are sequentially installed with a first cut-off valve, a tested valve and a second cut-off valve. A differential pressure gauge is installed on the tested valve.
上述方案中，所述熔盐罐位于地基上。In the above solution, the molten salt tank is located on the foundation.
上述方案中，所述熔盐罐上安装有加热管。In the above solution, a heating pipe is installed on the molten salt tank.
上述方案中，所述测试泵固定在泵基座上，所述泵基座通过联轴器与电机连接。In the above solution, the test pump is fixed on the pump base, and the pump base is connected to the motor through a shaft coupling.
上述方案中，所述联轴器位于电机架内。In the above solution, the shaft coupling is located in the motor frame.
上述方案中，所述泵基座位于泵桶内。In the above solution, the pump base is located in the pump bucket.
上述方案中，还包括有温度监测装置和振动、噪声测试装置。The above scheme also includes a temperature monitoring device and a vibration and noise testing device.
本发明的有益效果：（1）本发明解决了常规试验台在高温泵阀测试中存在的局限性，实现了高温条件的模拟试验。熔盐泵工作环境温度很高，试验条件比较苛刻，因此很多有关熔盐泵的研究、验证都是在常温清水条件下进行。在常温清水条件下不能真实地反映熔盐泵的运行性能，为避免介质条件以及温度因素对熔盐泵真实性能的影响，本发明建立熔盐泵真实工作条件对熔盐泵进行试验，并对性能指标参数进行采集，实现熔盐泵性能的精确评价。（2）能够实现对被试阀在真实条件下测试，可获得更加精确的性能参数。通过在熔盐泵测试的回路中设置阀门试验旁路管道，实现对被试阀的真是使用环境的性能测试。被试阀是太阳能光热发电系统中使用的核心部件，通过测量高温被试阀不同流量下的阀门两端的压差，得到被试阀的流量系数和流阻系数，为被试阀的性能评价提供了依据，拓展了测试装置的多功能用途及能源的利用率，节省试验设备开支及设备占地。（3）测试过程中熔盐温度低于熔点就会凝固，系统将无法运行，通过设置独立的加热管来实现测试装置运行过程中需要维持高温条件。（4）温度监测装置能够实现试验介质及装置温度实时监测。由于试验运行介质为高温熔盐，试验过程中介质和设备温度出现过低或过高的情况，就会造成试验设备的损坏。对熔盐罐内熔盐和罐壁的温度进行监测，反馈熔盐及罐壁温度的变化，实现熔盐温度的实时调整和设备安全温度的控制，保障试验装置的安全运行。（5）由于测试对象为高温条件下运行的熔盐泵和阀门，在高温条件下各部分的零部件的变形、振动、噪声、温度分布等对泵阀的运行稳定影响很大，本发明基于以上问题考虑，在测试系统中设置了振动、噪声测试装置。Beneficial effects of the present invention: (1) The present invention solves the limitations of conventional test benches in high-temperature pump and valve testing, and realizes simulation tests under high-temperature conditions. The working environment temperature of the molten salt pump is very high, and the test conditions are relatively harsh. Therefore, many researches and verifications on the molten salt pump are carried out under the condition of normal temperature and clean water. The operating performance of the molten salt pump cannot be truly reflected under the condition of normal temperature and clear water. In order to avoid the influence of medium conditions and temperature factors on the real performance of the molten salt pump, the present invention establishes the real working conditions of the molten salt pump to test the molten salt pump, and conducts tests on the molten salt pump The performance index parameters are collected to realize the accurate evaluation of the performance of the molten salt pump. (2) The test valve can be tested under real conditions, and more accurate performance parameters can be obtained. By setting the valve test bypass pipeline in the circuit of the molten salt pump test, the performance test of the real operating environment of the tested valve is realized. The tested valve is the core component used in the solar thermal power generation system. By measuring the pressure difference between the two ends of the valve under different flow rates of the high-temperature tested valve, the flow coefficient and flow resistance coefficient of the tested valve are obtained, which is the performance evaluation of the tested valve. The basis is provided, the multifunctional use of the test device and the utilization rate of energy are expanded, and the expense of the test equipment and the area occupied by the equipment are saved. (3) During the test process, the molten salt will solidify if the temperature is lower than the melting point, and the system will not be able to operate. An independent heating tube is set to realize the need to maintain high temperature conditions during the operation of the test device. (4) The temperature monitoring device can realize real-time monitoring of the temperature of the test medium and the device. Since the test operating medium is high-temperature molten salt, if the temperature of the medium and equipment is too low or too high during the test, it will cause damage to the test equipment. Monitor the temperature of the molten salt and the tank wall in the molten salt tank, feed back the changes in the temperature of the molten salt and the tank wall, realize real-time adjustment of the molten salt temperature and control of the safety temperature of the equipment, and ensure the safe operation of the test device. (5) Since the test objects are molten salt pumps and valves operating under high temperature conditions, the deformation, vibration, noise, and temperature distribution of parts of each part under high temperature conditions have a great impact on the stability of the pump and valve operation. The present invention is based on Considering the above problems, vibration and noise testing devices are set up in the testing system.
附图说明Description of drawings
图1是高温熔盐泵试验台示意图。Figure 1 is a schematic diagram of a high temperature molten salt pump test bench.
图2是阀门试验旁路系统示意图。Figure 2 is a schematic diagram of the valve test bypass system.
图3是振动和噪声监测点示意图。Figure 3 is a schematic diagram of vibration and noise monitoring points.
图4是熔盐罐结构示意图。Fig. 4 is a structural schematic diagram of a molten salt tank.
图5是电机端结构示意图。Fig. 5 is a schematic diagram of the structure of the motor end.
图中，1.转速检测仪，2.电机处温度监测点，3.压力表，4.流量计，5.压差计，6.止回阀，7.流量调节阀，8、第一截止阀，9.被试阀，10.第二截止阀，11.回流管，12.检修阀，13.壁温监测点，14.测试泵，15.加热管，16.地基，17.液温监测点，18.液位，19.压力表，20.液位计，21.阀门试验旁路管道，27.不同高度的监测点，28.周向监测点，29.泵桶，31.回路管进口，32.熔盐罐，33.电机，34.电机架，35.联轴器，36、泵基座。In the figure, 1. Speed detector, 2. Temperature monitoring point at the motor, 3. Pressure gauge, 4. Flow meter, 5. Differential pressure gauge, 6. Check valve, 7. Flow regulating valve, 8. First cut-off Valve, 9. Tested valve, 10. Second stop valve, 11. Return pipe, 12. Inspection valve, 13. Wall temperature monitoring point, 14. Test pump, 15. Heating pipe, 16. Foundation, 17. Liquid temperature Monitoring point, 18. Liquid level, 19. Pressure gauge, 20. Liquid level gauge, 21. Valve test bypass pipe, 27. Monitoring point at different heights, 28. Circumferential monitoring point, 29. Pump barrel, 31. Circuit Pipe inlet, 32. molten salt tank, 33. motor, 34. motor frame, 35. coupling, 36. pump base.
具体实施方式detailed description
以下结合附图和具体实施例对本发明作进一步的详细描述：Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
请参见附图1、图2、图4和图5所示，本实施例的长轴液下高温熔盐泵综合试验检测装置，包括测试泵14和熔盐罐32，所述测试泵14位于所述熔盐罐32内，所述测试泵14固定在泵基座36上，所述泵基座36通过联轴器35与电机33连接，所述联轴器35位于电机架34内，所述泵基座36位于泵桶29内，所述熔盐罐32位于地基16上，所述熔盐罐32上安装有加热管15，所述熔盐罐32上开有回路管进口31，所述测试泵14的输出口与所述回路管进口31之间通过回路管连接；所述回路管上安装有压力表3、流量计4、止回阀6、流量调节阀7和检修阀12，所述熔盐罐32上安装有压力表19和液位计20。所述压力表3和所述流量计4之间安装有回流管11，所述回流管11的输出端与所述熔盐罐32连通。所述止回阀6两侧的回路管上还并联有阀门试验旁路管道21，所述阀门试验旁路管道21上依次安装有第一截止阀8、被试阀9和第二截止阀10，所述被试阀9上安装有压差计5，此外，为了实现对电机33、熔盐罐32的温度监测，本实施例的检测装置还包括温度监测装置，由于测试对象为高温条件下运行的熔盐泵和阀门，在高温条件下各部分的零部件的变形、振动、噪声、温度分布等对泵阀的运行稳定影响很大，本实施例的检测装置还加入了振动、噪声测试装置。Please refer to accompanying drawing 1, Fig. 2, Fig. 4 and Fig. 5, the long-axis underwater high-temperature molten salt pump comprehensive test and detection device of the present embodiment includes a test pump 14 and a molten salt tank 32, and the test pump 14 is located at In the molten salt tank 32, the test pump 14 is fixed on the pump base 36, the pump base 36 is connected to the motor 33 through a coupling 35, and the coupling 35 is located in the motor frame 34, so The pump base 36 is located in the pump barrel 29, the molten salt tank 32 is located on the foundation 16, the heating pipe 15 is installed on the molten salt tank 32, and the circuit pipe inlet 31 is opened on the molten salt tank 32, so The output port of the test pump 14 is connected with the loop pipe inlet 31 through a loop pipe; a pressure gauge 3, a flow meter 4, a check valve 6, a flow regulating valve 7 and an inspection valve 12 are installed on the loop pipe, A pressure gauge 19 and a liquid level gauge 20 are installed on the molten salt tank 32 . A return pipe 11 is installed between the pressure gauge 3 and the flow meter 4 , and the output end of the return pipe 11 communicates with the molten salt tank 32 . The loop pipes on both sides of the check valve 6 are also connected in parallel with a valve test bypass pipeline 21, and the first shut-off valve 8, the tested valve 9 and the second shut-off valve 10 are sequentially installed on the valve test bypass pipeline 21. , the tested valve 9 is equipped with a differential pressure gauge 5. In addition, in order to realize the temperature monitoring of the motor 33 and the molten salt tank 32, the detection device of this embodiment also includes a temperature monitoring device. Since the test object is under high temperature conditions For molten salt pumps and valves in operation, the deformation, vibration, noise, and temperature distribution of parts of each part under high temperature conditions have a great impact on the stability of pump and valve operation. The detection device of this embodiment also includes vibration and noise tests device.
优选的，所述液位计为超声波液位计。所述压力表为氮封压力表。Preferably, the liquid level gauge is an ultrasonic liquid level gauge. The pressure gauge is a nitrogen blanket pressure gauge.
试验具体方法为：根据真实运行条件配制固态熔盐并通过泵桶29加入熔盐罐中，通过液位计20来随时监测熔盐罐32中的液位18；然后将试验泵14安装在泵基座36上，在启动试验泵14前需要对熔盐罐32中的熔盐充分加热，保证熔盐罐32中的熔盐介质充分融化，防止存在未融化的熔盐将试验管路堵塞。关闭流量调节阀7和第一截止阀8、第二截止阀10，打开检修阀12。在试验设备温度稳定后开启试验泵14，待试验泵运行稳定后打开流量阀7，让试验系统在流量阀7处于小开度条件下运行一定时间后对试验泵14进行不同流量条件下的性能测试同时对振动、噪声进行测试并进行数据采集。在对高温被试阀9进行测试时，先将止回阀6和流量调节阀7关闭，打开第一截止阀8、第二截止阀10和被试阀9，然后开启熔盐泵14，待熔盐泵稳定后让试验系统在流量阀7处于小开度条件下运行一定时间，再对被试阀9进行不同流量下的性能测试。试验中通过温度监测装置中的耐高温温度计对电机端2和熔盐罐13进行温度监测，其中对熔盐罐壁温的监测位置如图1中的壁温监测点13，对液温的监测位置见图1中的液温监测点17，对电机的监测位置如图1中的电机处温度监测点2，对电机端的温度监测目的是检验电机端的温度是否高于安全值，对熔盐罐的温度进行监测目的是保证实验过程中熔盐不凝固和熔盐罐的安全。在振动、噪声测试过程中，监测点如图3中的不同高度的监测点27和周向监测点28所示。其中，熔盐罐顶以上的监测点进行振动、噪声测试，熔盐罐以下的监测点只对振动测试，振动和噪声的监测即时对泵性能的测试同时也是对测试系统运行的安全进行监测。The specific method of the test is as follows: prepare solid molten salt according to the real operating conditions and add it into the molten salt tank through the pump barrel 29, and monitor the liquid level 18 in the molten salt tank 32 at any time through the liquid level gauge 20; then install the test pump 14 on the pump On the base 36, the molten salt in the molten salt tank 32 needs to be fully heated before starting the test pump 14 to ensure that the molten salt medium in the molten salt tank 32 is fully melted and to prevent unmelted molten salt from clogging the test pipeline. Close the flow regulating valve 7, the first shut-off valve 8, and the second shut-off valve 10, and open the maintenance valve 12. Turn on the test pump 14 after the temperature of the test equipment is stable, open the flow valve 7 after the test pump runs stably, let the test system run for a certain period of time when the flow valve 7 is in a small opening condition, and then test the performance of the test pump 14 under different flow conditions The test simultaneously tests vibration and noise and collects data. When testing the high-temperature tested valve 9, the check valve 6 and the flow regulating valve 7 are closed first, the first shut-off valve 8, the second shut-off valve 10 and the tested valve 9 are opened, and then the molten salt pump 14 is turned on. After the molten salt pump is stable, let the test system run for a certain period of time with the flow valve 7 at a small opening, and then perform performance tests on the tested valve 9 under different flow rates. During the test, the temperature of the motor end 2 and the molten salt tank 13 was monitored by the high temperature resistant thermometer in the temperature monitoring device. See the liquid temperature monitoring point 17 in Figure 1 for the position, and the temperature monitoring point 2 at the motor in Figure 1 for the monitoring position of the motor. The purpose of temperature monitoring at the motor end is to check whether the temperature at the motor end is higher than the safe value. The purpose of monitoring the temperature is to ensure that the molten salt does not solidify and the safety of the molten salt tank during the experiment. During the vibration and noise testing process, the monitoring points are shown as monitoring points 27 and circumferential monitoring points 28 at different heights in FIG. 3 . Among them, the monitoring points above the molten salt tank roof are used for vibration and noise tests, and the monitoring points below the molten salt tank are only for vibration tests. The monitoring of vibration and noise is not only a test of the performance of the pump, but also a monitoring of the safety of the test system.
由于压力表3和流量计4这两个仪器中间残余的高温熔盐会凝结，从而影响下一次运行时压力表3和流量计4的正常运行，为了保护这两个仪器不出现熔盐凝结，并正常启动，在试验完成后，将回流管11的阀门和检修阀12打开，将回路中剩余的高温熔盐回收到熔盐罐32内，在取出试验泵14后再将加热管15关闭。Since the residual high-temperature molten salt between the two instruments of pressure gauge 3 and flowmeter 4 will condense, which will affect the normal operation of pressure gauge 3 and flowmeter 4 during the next operation, in order to protect these two instruments from molten salt condensation, And start normally, after the test is completed, the valve of the return pipe 11 and the maintenance valve 12 are opened, and the remaining high-temperature molten salt in the circuit is recovered in the molten salt tank 32, and the heating pipe 15 is closed after the test pump 14 is taken out.
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| CN113048045A (en) * | 2021-03-05 | 2021-06-29 | 博朗普特工业设备(苏州)有限公司 | Multi-element coupling test platform for pump valves of different categories |
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