阅读说明：本技术 一种模拟横摇运动下强迫循环流动特征的串联管路系统 (Series pipeline system for simulating forced circulation flow characteristics under rolling motion ) 是由 李东阳 张彪 魏天一 陈明鹏 刘政 李鑫 乔守旭 谭思超 于 2021-08-29 设计创作，主要内容包括：本发明的目的是为了提供一种适用于模拟横摇运动下强迫循环流动特征的串联管路系统,包括管路系统及附属设备、支撑台架、驱动系统,支撑台架与管路系统及附属设备连接,位于管路系统及附属设备下方,驱动系统与支撑台架连接,位于支撑台架下面。本发明可在海洋条件横摇运动下的流动特性展开研究,可在不同横摇周期、不同横摇幅值、不同强迫循环流速、不同流动管路的条件下研究管路内流动参数特征以及仪表相应特性,且在同一装置中拥有地面对照组和运动实验组,可分别进行动态横摇实验、静态对照实验、相互影响实验等,且本发明具有设计简单、造价低廉、可移动性强、拓展性强、安装简单等优点。(The invention aims to provide a series pipeline system suitable for simulating forced circulation flow characteristics under rolling motion. The invention can be used for researching the flow characteristics under the rolling motion under the ocean condition, can be used for researching the flow parameter characteristics in the pipeline and the corresponding characteristics of instruments under the conditions of different rolling periods, different rolling amplitude values, different forced circulation flow rates and different flow pipelines, has a ground control group and a motion experiment group in the same device, and can respectively carry out dynamic rolling experiments, static control experiments, mutual influence experiments and the like.)

1. A series pipeline system simulating forced circulation flow characteristics under rolling motion is characterized in that: the pipeline system and accessory equipment are connected with the supporting rack, the supporting rack is located below the pipeline system and the accessory equipment, and the driving system is connected with the supporting rack and located below the supporting rack.

2. The in-line piping system for simulating forced circulation flow characteristics under rolling motion of claim 1, wherein: the pipeline system and the accessory equipment comprise a towerless water feeder (1-1), a water feeder exhaust hole (1-2), an outlet valve (1-3), an elbow (1-4), a movable joint (1-5), a driving pump (1-6), a straight pipe (1-7), a bypass valve (1-8), a tee joint (1-9), an inlet hose (1-10), a motion measuring instrument (1-11), a motion high-position exhaust hole (1-12), an outlet hose (1-13), a ground measuring instrument (1-14), a ground high-position exhaust hole (1-15), an electromagnetic flowmeter (1-16), a water filling port and a valve (1-17), a motion experiment group valve (1-18), a main valve straight pipe (1-19), an experiment straight pipe section (1-20), The device comprises a loop connection straight pipe (1-21), an experimental group pressure measuring straight pipe (1-22), a motion high-position exhaust straight pipe (1-23), a ground group pressure measuring straight pipe (1-24), a ground high-position exhaust straight pipe (1-25) and a flow measurement straight pipe (1-26), wherein a water supply exhaust hole (1-2) is arranged on a towerless water supply device (1-1), a water filling port and a valve (1-17) are arranged on the lower side surface of the towerless water supply device (1-1), and the lower surface of the towerless water supply device (1-1) is sequentially connected with a main valve straight pipe (1-19), a straight pipe (1-7), an experimental section straight pipe (1-20), an inlet hose (1-10), an experimental group pressure measuring straight pipe (1-22), a motion high-position exhaust straight pipe (1-23), an outlet hose (1-13), a ground group pressure measuring straight pipe (1-24), The ground high-level exhaust straight pipe (1-25), the flow measurement straight pipe (1-26), the elbow (1-4) and the union joint (1-5) are connected with the main valve straight pipe (1-19) and the straight pipe (1-7), the left side and the right side of the tee joint (1-9) are connected with the straight pipe (1-7) and the experiment section straight pipe (1-20), the loop connecting straight pipe (1-21) is connected on the tee joint (1-9), the other end of the loop connecting straight pipe (1-21) is connected with the tee joint and then connected with the outlet hose (1-13), the outlet valve (1-3) is arranged on the main valve straight pipe (1-19), the driving pump (1-6) is positioned on the straight pipe (1-7), the movement measurement instrument (1-11) is positioned on the experiment group pressure measurement straight pipe (1-22), the movement high-level exhaust hole (1-12) is positioned on the movement high-level exhaust straight pipe (1-23), the ground measuring instruments (1-14) are positioned on the ground group pressure measuring straight pipes (1-24), the ground high-position exhaust holes (1-15) are positioned on the ground high-position exhaust straight pipes (1-25), and the electromagnetic flow meters (1-16) are positioned on the flow measuring straight pipes (1-26).

3. The in-line piping system for simulating forced circulation flow characteristics under rolling motion of claim 2, wherein: the support rack comprises a rolling platform support frame (2-1), a rolling platform bearing and bearing seat (2-2), a rolling platform surface (2-3), platform diagonal draw bars (2-4), a rolling pipeline support frame (2-5) and a ground pipeline support frame (2-6), wherein the rolling pipeline support frame (2-5) is positioned below the moving high-position exhaust straight pipe (1-23), the rolling platform bearing and the bearing seat (2-2) are arranged on one side of the rolling platform surface (2-3) above the rolling platform surface (2-3), and the rolling platform support frame (2-1) is connected below the rolling platform surface (2-3).

4. A series piping system for simulating forced circulation flow characteristics under rolling motion as claimed in claim 3, wherein: the driving system comprises a servo motor (3-1), a coupler (3-2), a reduction gearbox (3-3), a crank (3-4), a crank connecting rod rotating pin (3-5), a connecting rod (3-6), a rocker (3-7), a rocker position hole (3-8), a connecting rod rocker rotating pin (3-9) and a crank position hole (3-10), wherein the rocker (3-7) is connected with a rolling platform bearing and a bearing seat (2-2), a platform diagonal draw bar (2-4) is connected with the platform diagonal draw bar (2-4) and the rocker (3-7), one end of the connecting rod (3-6) is provided with the connecting rod rocker rotating pin (3-9) to be connected with the rocker position hole (3-8) processed on the rocker (3-7), and the other end of the connecting rod (3-6) is provided with the crank connecting rod rotating pin (3-5) and a crank (3-4) processed curve The handle hole (3-10) is connected, the crank (3-4) is connected with the reduction gearbox (3-3), and the coupler (3-2) is connected with the reduction gearbox (3-3) and the servo motor (3-1).

Technical Field

The invention belongs to the technical field of marine reactor thermal hydraulic experiment research, and particularly relates to a series pipeline system for simulating forced circulation flow characteristics under rolling motion.

Background

Since the controllable nuclear power generation in the twentieth century is realized, the nuclear power is developed rapidly and becomes an indispensable part in the field of energy, and as a clean energy, the nuclear power is concerned by people due to the advantages of high energy density, no pollution and the like, but the operation condition of marine nuclear power equipment is severe, the accident consequence is not imaginable, and people put forward higher standard to the safety requirement

In a conventional land-based reactor, a pipeline system is a relatively common system, appears in each loop or equipment in large quantity, plays a role in conveying working media such as water, oil, steam and the like, and can collect various flow parameters in the pipeline by using a conventional instrument. If flow is measured using an orifice plate flowmeter and pressure drop is measured using a differential pressure transmitter, in practice most of these meters are based on pressure measurement, either outputting a pressure drop signal directly, or by conversion or translation. In conventional land-based nuclear power plants, such meters can perform established functions under normal operating conditions.

Nuclear power equipment such as a nuclear power ship or a floating pile under the marine condition can be influenced by wind waves, tsunamis, earthquakes, sailing and even fighting, working medium flowing in a pipeline can be influenced by additional inertia force, and net driving force and attitude parameters can change to cause the change of the flowing parameters under the same working condition; while additional inertial forces and changes in attitude parameters also affect the response characteristics of the instrumentation in some pipelines. Therefore, in a marine environment, the measurement of hydraulic parameters in pipelines can have response characteristics or errors different from those of land-based systems. The study of the characteristics of forced circulation flow in the pipeline under the motion conditions such as rolling condition needs response study to support the design of related equipment and signal processing.

Object of the Invention

The invention aims to provide a series pipeline system suitable for simulating forced circulation flow characteristics under rolling motion.

The purpose of the invention is realized by the following technical scheme: the pipeline system and accessory equipment are connected with the supporting rack, the supporting rack is located below the pipeline system and the accessory equipment, and the driving system is connected with the supporting rack and located below the supporting rack.

The present invention may further comprise:

1. the pipeline system and the accessory equipment comprise a towerless water feeder 1-1, a water feeder vent hole 1-2, an outlet valve 1-3, an elbow 1-4, a movable joint 1-5, a driving pump 1-6, a straight pipe 1-7, a bypass valve 1-8, a tee joint 1-9, an inlet hose 1-10, a motion measuring instrument 1-11, a motion high-position vent hole 1-12, an outlet hose 1-13, a ground measuring instrument 1-14, a ground high-position vent hole 1-15, an electromagnetic flowmeter 1-16, a water filling port and a valve 1-17, a motion experimental group valve 1-18, a main valve straight pipe 1-19, an experimental section straight pipe 1-20, a loop connection straight pipe 1-21, an experimental group pressure measuring straight pipe 1-22, a motion high-position vent straight pipe 1-23, a motion experimental group pressure measuring straight pipe 1-23, a motion high-position vent straight pipe 1-23, The pressure measuring straight pipe 1-24 of the ground group, the high-level exhaust straight pipe 1-25 of the ground and the flow measuring straight pipe 1-26, the water feeder exhaust hole 1-2 is arranged on the towerless water feeder 1-1, the water filling port and the valve 1-17 are arranged on the lower side surface, the main valve straight pipe 1-19, the straight pipe 1-7, the experiment section straight pipe 1-20, the inlet hose 1-10, the pressure measuring straight pipe 1-22 of the experiment group, the motion high-level exhaust straight pipe 1-23, the outlet hose 1-13, the pressure measuring straight pipe 1-24 of the ground group, the high-level exhaust straight pipe 1-25 of the ground and the flow measuring straight pipe 1-26 are connected in sequence on the lower surface of the towerless water feeder 1-1, the elbow 1-4 and the union 1-5 are connected with the main valve straight pipe 1-19 and the straight pipe 1-7, the tee joint 1-9 is connected with the straight pipe 1-7 and the experiment section straight pipe 1-20 on the left and right sides, the upper surface of a tee joint 1-9 is connected with a loop connecting straight pipe 1-21, the other end of the loop connecting straight pipe 1-21 is connected with the tee joint and then connected with an outlet hose 1-13, an outlet valve 1-3 is arranged on a main valve straight pipe 1-19, a driving pump 1-6 is arranged on a straight pipe 1-7, a movement measuring instrument 1-11 is arranged on an experimental group pressure measuring straight pipe 1-22, a movement high-position vent hole 1-12 is arranged on a movement high-position exhaust straight pipe 1-23, a ground measuring instrument 1-14 is arranged on a ground group pressure measuring straight pipe 1-24, a ground high-position vent hole 1-15 is arranged on a ground high-position exhaust straight pipe 1-25, and an electromagnetic flowmeter 1-16 is arranged on a straight pipe 1-26.

2. The support rack comprises a rolling platform support frame 2-1, a rolling platform bearing and bearing seat 2-2, a rolling platform surface 2-3, platform diagonal draw bars 2-4, a rolling pipeline support frame 2-5 and a ground pipeline support frame 2-6, wherein the rolling pipeline support frame 2-5 is positioned below a moving high-position exhaust straight pipe 1-23, the rolling platform bearing and the bearing seat 2-2 are arranged on one side of the rolling platform surface 2-3 on the rolling platform surface 2-3, and the rolling platform support frame 2-1 is connected below the rolling platform surface 2-3.

3. The driving system comprises a servo motor 3-1, a coupler 3-2, a reduction box 3-3, a crank 3-4, a crank connecting rod rotating pin 3-5, a connecting rod 3-6, a rocker 3-7, a rocker position hole 3-8, a connecting rod rocker rotating pin 3-9 and a crank position hole 3-10, wherein the rocker 3-7 is connected with a rolling platform bearing and a bearing seat 2-2, a platform diagonal draw rod 2-4 is connected with the platform diagonal draw rod 2-4 and the rocker 3-7, one end of the connecting rod 3-6 is provided with a connecting rod rocker rotating pin 3-9 which is connected with the rocker position hole 3-8 processed on the rocker 3-7, the other end of the connecting rod 3-6 is provided with a crank connecting rod rotating pin 3-5 which is connected with the crank position hole 3-10 processed on the crank 3-4, the crank 3-4 is connected with the reduction gearbox 3-3, and the coupler 3-2 is connected with the reduction gearbox 3-3 and the servo motor 3-1.

Technical effects

Compared with the prior art, the invention has the beneficial effects that:

1. the experimental system uses the small motor and the reduction gearbox to provide driving, and has strong mobility, lower manufacturing cost and low requirement on sites.

2. The invention uses the crank rocker mechanism to carry out motion conversion, has simple principle and convenient processing, and the crank and the rocker are both provided with the position holes, thus realizing the selection of a plurality of rolling amplitude values.

3. The invention simultaneously sets a ground control group and a motion experiment group, wherein the ground control group and the motion experiment group are connected by a bypass and can be controlled to be in various flow forms, and a dynamic rolling experiment, a static control experiment, a mutual influence experiment and the like can be respectively carried out.

4. All pipeline equipment such as straight pipes, corrugated pipes, elbows, tee joints, valves and the like are connected by quick joints, and the disassembly, modification and displacement are very convenient. And ground contrast group and motion experiment group section pipeline all can be dismantled, can arrange according to task requirement and actual pipeline and set up, and the remodelability is strong.

Drawings

FIG. 1 is a schematic view of an experimental system according to the present invention;

FIG. 2 is a schematic view of a driving mechanism and a portion of a support stand according to the present invention;

FIG. 3 is a schematic view of a piping system and accessories according to the present invention.

Detailed Description

According to the figures 1 and 3, the pipeline system and the accessory equipment mainly comprise a towerless water feeder 1-1, a water feeder vent hole 1-2, an outlet valve 1-3, an elbow 1-4, a union joint 1-5, a driving pump 1-6, a straight pipe 1-7, a bypass valve 1-8, a tee joint 1-9, an inlet hose 1-10, a movement measuring instrument 1-11, a movement high-position vent hole 1-12, an outlet hose 1-13, a ground measuring instrument 1-14, a ground high-position vent hole 1-15, an electromagnetic flowmeter 1-16, a water filling port and a valve 1-17, a movement experimental group valve 1-18 and the like. The pipeline system and the accessory equipment mainly provide an experiment loop body for the experiment system, and flow and parameter measurement required to be researched can be realized. The towerless water feeder 1-1 is used for storing water and exhausting gas, and the exhausting operation is carried out before the experiment: opening a water filling port and a valve 1-17 to fill water from a water source, enabling the water to occupy a larger space in a tower-free water feeder 1-1 and generate a certain pressure in a loop, then closing the water filling port and the valve 1-17, controlling a driving pump 1-6 to enable the water in the loop to circulate for a period of time, and opening a moving high-level vent hole 1-12, a ground high-level vent hole 1-15 and a water feeder vent hole 1-2 to enable the gas in the loop to be exhausted cleanly because of gas-liquid separation effect gas stored at the upper end of the tower-free water feeder and the top of a ground control combined movement experiment set pipeline, thereby preventing the inaccurate measurement of instruments due to the existence of gas phase.

Straight pipe 1-7, elbow 1-4, tee joint 1-9, bellows 1-13 are standard parts of DN50 specification, can also set up the specification according to the requirement or concrete situation, connect with union 1-5, note that above pipeline component and valve, etc. are not merely limited to the position pointed out in the figure, should be all components with similar characteristic in the figure, its length, specification, arrangement, etc. are determined according to the place and concrete requirement, the driving force of the loop is provided by the driving pump during the experiment, can control the liquid flow in the pipeline by adjusting the rotational speed of the pump, and the reference flow of the liquid is measured by the electromagnetic flowmeter 1-16, at the same time the corresponding position in ground contrast group and motion experiment group can set up the measuring instrument such as differential pressure transducer, orifice plate flowmeter, etc., the motion measuring instrument 1-11, ground measuring instrument 1-14 can set up the type of the instrument according to the concrete requirement, The model, the installation mode, the installation position, the orientation and the like, and the positions of the corrugated pipes 1 to 13 should be noticed in the experiment process, so that the corrugated pipes are not wound, bent and the like.

According to the figure 2, a support rack and a driving mechanism jointly provide a carrier for a rolling motion for an experiment loop, and the support rack mainly comprises a rolling platform support frame 2-1, a rolling platform bearing and bearing seat 2-2, a rolling platform surface 2-3, a platform diagonal draw bar 2-4, a rolling pipeline support frame 2-5, a ground pipeline support frame 2-6 and the like. The rolling platform support frame 2-1 is generally formed by welding I-shaped steel or angle steel and is connected with the ground through expansion bolts, a rolling platform bearing and a bearing seat 2-2 are connected with the rolling platform support frame 2-1 and a rolling platform surface 2-3, the rolling platform surface 2-3 is made of aluminum section combined steel plates and can also be made of other light high-strength materials and used for supporting a carrying motion experiment set, the rolling pipeline support frame 2-5 is formed by welding C-shaped steel and other materials, the specific size is determined according to the bearing requirement and is connected with the rolling platform surface 2-3 through bolts, and if the designed rolling pipeline support frame 2-5 is good in universality, the rolling pipeline support frame can be connected in a welding mode. The driving mechanism mainly comprises a servo motor 3-1, a coupler 3-2, a reduction gearbox 3-3, a crank 3-4, a crank connecting rod rotating pin 3-5, a connecting rod 3-6, a rocker 3-7, a rocker position hole 3-8, a connecting rod rocker rotating pin 3-9, a crank position hole 3-10 and the like. The driving mechanism mainly provides driving for the system, so that the motion experiment group is under the set motion working condition. The output rotating speed is controlled by controlling the rotating frequency of the servo motor 3-1, the coupler 3-2 is connected with the reduction gearbox 3-3 to slow down the rotation, the driving force is strengthened, the rocker 3-4 is driven to continuously rotate to drive the connecting rod 3-6 and the rocker 3-8 to move, and finally the rocker 3-8 is continuously swung and shows continuous rolling motion on a platform, wherein the motor 3-1, the reduction gearbox 3-3 and the coupler 3-2 can be replaced by an integrated speed reducing motor. The crank 3-4 and the rocker 3-7 are provided with position holes, the amplitude of the rolling motion can be controlled by changing the position relation among the crank connecting rod rotating pin 3-5, the connecting rod rocker rotating pin 3-9, the crank position hole 3-8 and the rocker position hole 3-8, and the motion frequency is controlled by controlling the rotating frequency of the motor 3-1 and the transmission ratio of the reduction gearbox 3-3.

After the exhaust work is finished, various established experiments can be carried out, the rotating speed of the driving pump 1-4 is firstly adjusted, and the readings of the electromagnetic flowmeter are observed, so that the initial flow parameters in the pipeline reach the preset values. And then controlling the motor to rotate according to the set working condition and starting to record data. During the experiment, the water filling port and the valves 1-17 are in a normally closed state, and the outlet valves 1-3 are in a normally open state.

If the ground control group static experiment is carried out, the valves 1-18 of the motion experiment group are closed, the bypass valves 1-8 are opened, the driving pumps 1-4 are adjusted to set parameters, the servo motors 3-1 are closed, and corresponding data are recorded;

if the motion set stationary experiment is carried out, opening valves 1-18 of the motion experimental set, closing bypass valves 1-8, driving pumps 1-4 to adjust to set parameters, closing servo motors 3-1, and recording corresponding data;

if the motion experiment of the motion group is carried out, the valves 1-18 of the motion experiment group are opened, the bypass valves 1-8 are closed, the driving pumps 1-4 are driven to adjust to the set parameters, the servo motors 3-1 are used for adjusting the set parameters, and only the parameters of the motion measuring instruments 1-11 or other motion group instruments set according to requirements are recorded;

if the two are subjected to the mutual influence experiment, recording the parameters of the ground measuring instruments 1-11 or other motion group instruments set according to requirements on the upper basis;

if the rolling no-flow experiment is carried out, closing the outlet valves 1-3, opening the bypass valves 1-8 and the valves 1-18 of the motion experiment group, and recording corresponding data;

different flow modes can be realized by controlling the switches of the three valves, and the setting of the experimental bypass is not limited to the setting in the attached drawings and is flexible and changeable according to specific conditions; the change of initial flow parameters can be realized by controlling the rotating speed of the driving pumps 1 to 4, the front and the back of the driving pumps 1 to 4 and the front and the back of the electromagnetic flow meters 1 to 16 are provided with straight pipe sections which are long enough, and the arrangement positions of the straight pipe sections are flexible and changeable according to specific conditions; the amplitude of the rolling motion can be changed by controlling the length of the connecting rod, the connection selection of the crank, the connecting rod upper hole and the rotating pin; the period of the rolling motion is controlled by controlling the rotation frequency of the motor 3-1 and the transmission ratio of the reduction gearbox 3-3.

The invention can be used for researching the flow characteristics under the rolling motion under the ocean condition, can be used for researching the flow parameter characteristics in the pipeline and the corresponding characteristics of instruments under the conditions of different rolling periods, different rolling amplitude values, different forced circulation flow rates and different flow pipelines, has a ground control group and a motion experiment group in the same device, and can respectively carry out dynamic rolling experiments, static control experiments, mutual influence experiments and the like. Most of current marine condition experimental systems are hydraulic pressure or electric cylinder drive, and the cost is higher and bulky, and it is comparatively troublesome to remove, and it is higher to require the place, and this experimental system realizes the drive with gear motor collocation crank rocker device, and the volume is less, the cost is lower, require not high to the place, and the change that more motion parameter can also be realized to the hole site that changes crank rocker mechanism. The pipelines used by the experimental system are all connected with pipeline equipment such as straight pipes, hoses, elbows, tees and the like by using movable joints, the improvement performance is good, and the pipeline form required by the actual situation can be changed quickly. The system is provided with a ground control group and a motion experiment group, wherein the ground control group and the motion experiment group are connected through a bypass and can be controlled to be in various flow forms, and the two groups are carried out simultaneously, so that the mutual influence of the ground control group and the motion experiment group can be researched.