Magnetic cutting type sensor experiment device

Abstract

The utility model relates to a magnetic cutting type sensor experimental device, which is characterized in that a nylon flow guide core is inserted into a horizontal straight-through pipe of a reducing three-way piece, and a vertical pipe of the reducing three-way piece is vertically and coaxially aligned with a sensor mounting hole in the nylon flow guide core, so that a magnetic cutting type sensor extends into the sensor mounting hole through the vertical pipe; a measuring point of the magnetic cutting type sensor is positioned on the axis of the flow guide through hole; the two flow guide flange plates are respectively and fixedly connected with the straight-through pipe flange plates at the two ends in a sealing manner; the two flange flow guide pipes are respectively and coaxially positioned and matched with the two ends of the flow guide through hole of the nylon flow guide core; one ends of the two pneumatic ball valve flow guide pipes are coaxially and fixedly connected with the outer ends of the flange flow guide pipes at the two ends respectively, and a water inlet and a water outlet are fixedly formed in the outer ends of the two pneumatic ball valve flow guide pipes respectively; and the flow guide through holes have the same inner diameter as the flange flow guide pipes at the two ends and the pneumatic ball valve flow guide pipes at the two ends. The device can realize the functions of sensor phase judgment, flow velocity matching and pressure test.

Description

TECHNICAL FIELD

[0001] The utility model relates to magnetic cutting type measurement technical field especially relates to a magnetic cutting type sensor experimental device. BACKGROUND

[0002] The marine magnetic cutting type sensor is a contact type seawater measuring relative speed sensor, which is generally installed at the bottom of the cabin, and the induced electromotive force of the magnetic cutting is generated through the seawater, and the relative speed of the ship is obtained by solving the induced electromotive force. During the ship building and sailing test, the magnetic cutting type sensor will appear the phase difference of 180 degrees between the electromotive force signal phase generated by the magnetic cutting and the base frequency signal phase, and the magnetic cutting type sensor is not matched with the fluid flow rate.

[0003] The phase difference of 180 degrees is reflected in the opposite direction of the measured relative speed and the sailing direction of the ship. The flow rate matching of the magnetic cutting type sensor not matching with the fluid flow rate is reflected in the case that the measured value and the actual value have large deviation, and both of them have certain influence on the development of the test.

[0004] In order to meet the use requirement, eliminate the phase difference and reduce the deviation value, the magnetic cutting type sensor needs to be dynamically measured before leaving the factory, and the water flow laminar flow is used instead of the ship sailing mode. At present, the zero position checking mode is adopted before leaving the factory, but this zero position checking mode cannot obtain the phase difference and deviation value of the magnetic cutting type sensor, and cannot meet the use and test requirements of the magnetic cutting type sensor on site. In order to meet the use and test requirements, the required indexes of the marine magnetic cutting type sensor are measured and processed in the factory, and a magnetic cutting type sensor experimental device needs to be designed to judge the signal phase of the marine magnetic cutting type sensor during the period in the factory, reduce the deviation value of the relative speed, reduce the influence during the ship sailing test and improve the accuracy of the data. UTILITY MODEL CONTENTS

[0005] The utility model discloses a magnetic cutting type sensor experimental device for realizing the function of judging the phase of the marine magnetic cutting type sensor, matching the flow rate and pressure test, which can improve the efficiency, reduce the manpower and maintain the accuracy of data.

[0006] The above purpose of the utility model is realized by the following technical scheme:

[0007] A magnetic cutting type sensor experimental device, comprising a reducing tee, a nylon flow guide core, a flow guide flange end cover and a pneumatic ball valve.

[0008] The said reducing tee is composed of a horizontal straight pipe and a vertical pipe communicated with the middle part of the upper end of the horizontal straight pipe, a vertical pipe flange plate is arranged at the end of the vertical pipe, a pressure test hole and a pressure gauge hole are arranged at both sides of the vertical pipe respectively, straight pipe flange plates are arranged at both ends of the horizontal straight pipe; the outer diameter of the said nylon flow guide core matches the inner diameter of the horizontal straight pipe of the reducing tee, a flow guide through hole is processed at the axial center of the nylon flow guide core, a sensor mounting hole and a sensor positioning groove are radially processed at the middle part of the nylon flow guide core, the sensor mounting hole and the sensor positioning groove are arranged in vertical alignment and are communicated through the flow guide through hole; the said flow guide flange end cover is composed of a flow guide flange plate and a flange flow guide pipe welded with the center hole of the flow guide flange plate;

[0009] The said nylon flow guide core is inserted into the horizontal straight pipe of the reducing tee in a way that one end is positioned, the vertical pipe of the reducing tee is coaxially aligned with the sensor mounting hole on the nylon flow guide core; the magnetic cutting type sensor fixedly connected with the vertical pipe flange plate through the upper end flange plate is extended into the sensor mounting hole through the vertical pipe and is limited by the sensor positioning groove, and the measuring point of the magnetic cutting type sensor is located on the axial center of the flow guide through hole;

[0010] The flow guide flange plates of the two flow guide flange end covers are respectively fixedly connected with the straight pipe flange plates at both ends through bolts and second sealing rings in a sealing way at the end face, and the flange flow guide pipes of the two flow guide flange end covers are respectively coaxially positioned and matched with the flow guide through holes of the nylon flow guide core at both ends;

[0011] The pneumatic ball valve flow guide pipes of the two pneumatic ball valves are respectively coaxially fixedly connected with the outer ends of the flange flow guide pipes at both ends, and the water inlet and the water outlet are respectively fixedly installed at the outer ends of the two pneumatic ball valve flow guide pipes; the said water inlet and the water outlet are connected with the peripheral circulating water hole test device; the inner diameters of the flow guide through hole and the flange flow guide pipes and the pneumatic ball valve flow guide pipes at both ends are the same;

[0012] The pressure test hole and the pressure gauge hole on the said reducing tee are respectively connected with a pressure test source pipe and a pressure gauge;

[0013] The said reducing tee and the flow guide flange end cover are both made of austenitic stainless steel.

[0014] Moreover, flow guide hole positioning recesses are arranged at both ends of the flow guide through hole and are respectively inserted and positioned with the flange flow guide pipes at both ends.

[0015] Moreover, a limiting recess is arranged at one end of the outer circle of the nylon flow guide core, and the limiting recess is limitedly matched with the limiting protrusion arranged at one end of the horizontal straight pipe.

[0016] Moreover, a water flow direction mark is engraved on the outer surface of the reducing tee.

[0017] The utility model has the advantages and positive effects of:

[0018] 1, the device in this device eccentric reducer piece provides reliable rigidity, pressure resistance for integral device, adopts austenitic stainless steel base material to design, the non-magnetic characteristic of austenitic stainless steel base material is further avoided to be affected by the magnetic conduction of magnetic cutting type sensor, the nylon flow guide groove is non-metallic nylon material, ensure that the fluid flow range and sensor magnetic force energy field range are not magnetic conductive. Water flow (single phase laminar flow) passes into the water inlet to the pneumatic ball valve, when the pneumatic ball valve opens, the water flow passes through the flow guide flange plate flow guide pipe and then through the nylon flow guide groove flow guide hole, the flange flow guide pipe and the flow guide hole inner diameter of two ends are consistent, relative to the eccentric reducer piece whole is small pipe diameter, when processing, the flatness and parallelism of the flow guide pipe surface are ensured. The flange flow guide pipe and the flow guide hole adopt splicing connection mode, the small pipe same diameter flow guide passage design can reduce the cross-sectional area and accelerate the flow rate under the same flow, can effectively avoid the change of fluid from laminar flow to turbulent flow and single phase flow to gas-liquid two phase flow, when the required fluid acts on the magnetic cutting type sensor, the induced electromotive force is generated, the pickup signal can be phase judgment, flow rate matching. The utility model focuses on effectively avoiding the magnetic conduction phenomenon of the magnetic cutting type sensor on the experimental device and the laminar flow cutting mode of the small pipe diameter optional velocity gradient, ensuring the correctness and effectiveness of the magnetic cutting type sensor experiment and the purpose of dynamic experiment.

[0019] 2, the straight pipe two ends of the eccentric reducer piece in the device are installed and sealed through the flow guide flange plate, the flow guide flange plate two ends are installed and sealed with the pneumatic ball valve, the vertical pipe is installed and sealed through the flange plate of the magnetic cutting type sensor, and a pressure test hole and a pressure gauge mounting hole are arranged on the vertical pipe. When the pneumatic ball valve is closed, the eccentric reducer piece forms a closed cavity, and pressure can be added through the pressure test hole to test the pressure resistance of the magnetic cutting type sensor. The pressure resistance of the magnetic cutting type sensor can be tested through the pressure gauge reading, and after the pressure resistance test of the magnetic cutting type sensor is completed, the relative speed matching and phase judgment of the magnetic cutting type sensor can be carried out, and whether the pressure resistance test of the magnetic cutting type sensor meets the requirements can be further judged.

[0020] 3, the device can effectively measure and process the required indicators of the marine magnetic cutting type sensor, realize the functions of phase judgment, flow rate matching and pressure test of the marine magnetic cutting type sensor, effectively improve the efficiency, reduce the labor, and consolidate the correctness and effectiveness of the magnetic cutting type sensor experiment. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the appearance structure schematic diagram of the magnetic cutting type sensor experimental device of the utility model,

[0022] Figure 2is the left view of the magnetic cutting type sensor experimental device of the utility model;

[0023] Figure 3 is the left view sectional structure schematic diagram of the magnetic cutting type sensor experimental device of the utility model;

[0024] Figure 4 is the front view structure schematic diagram of the magnetic cutting type sensor experimental device of the utility model;

[0025] Figure 5 is the front view sectional structure schematic diagram of the magnetic cutting type sensor experimental device of the utility model; DETAILED DESCRIPTION

[0026] The structure of the utility model is further explained below in combination with the drawings and through examples.It should be noted that the examples are narrative rather than limiting.

[0027] A magnetic cutting type sensor experimental device, please see Figures 1-5 , including the diameter three-way piece 1, the flow guide flange end cover 2, the pneumatic ball valve 3, the support 4, the nylon flow guide core 5, the fastening bolt 6, the first O type ring 7, the second O type ring 8.

[0028] The diameter three-way piece 1 is made of 022Cr17Ni12Mo12 austenitic stainless steel base material and is welded, and is composed of a horizontal straight pipe and a vertical pipe communicated with the upper middle part of the horizontal straight pipe.A vertical pipe flange plate is arranged at the end of the vertical pipe, and straight pipe flange plates are arranged at both ends of the horizontal straight pipe, as shown in Figure 5 The flow guide flange end cover is composed of a flow guide flange plate 2-2 and a flange flow guide pipe 2-1 welded with the center hole of the flow guide flange plate.A groove is opened on the straight pipe flange plate 1-4 for placing the second O type ring 8, and the straight pipe flange plate 1-4 and the flow guide flange plate 2-2 are spliced and fastened by the bolt 6-4, the gasket 6-3, the elastic pad 6-2 and the nut 6-1, and the second O type ring 8 seals the end faces of the straight pipe flange plate 1-4 and the flow guide flange plate 2-2.

[0029] A pressure test hole 1-3 and a pressure gauge hole 1-2 are arranged on both sides of the vertical pipe of the diameter three-way piece 1.The pressure test hole 1-3 is internally threaded for connecting a pressure test source pipe, the pressure test source is an external device air compressor, the pressure source is air pressure, which can provide a pressure of 0-1MPa, and the air compressor is provided with a safety relief valve, so that the diameter three-way piece 1 is not provided with a safety relief valve.The pressure gauge hole 1-2 is internally threaded for installing a pointer type pressure gauge, and the calibrated pressure gauge is used as a standard for the internal cavity pressure of the diameter three-way piece 1.In order to facilitate the installation of the nylon flow guide core 5 and avoid the nylon flow guide core 5 being blocked during the pressure test without affecting the fluid flow of the flow guide hole 5-1.

[0030] The nylon flow guide core 5 is integrally processed with a non-metal nylon base material, and the outer diameter of the nylon flow guide core matches the inner diameter of the horizontal straight pipe of the reducing tee piece. A flow guide through hole 5-1 is processed in the axial center of the nylon flow guide core 5, and a sensor mounting hole 5-3 and a sensor positioning groove 5-2 are radially processed in the middle of the nylon flow guide core. The sensor mounting hole 5-3 and the sensor positioning groove 5-2 are vertically aligned and connected through the flow guide through hole 5-1. Flow guide hole positioning recesses 5-5 are arranged at both ends of the flow guide through hole, and a limiting recess 5-4 is arranged at one end of the outer circle of the nylon flow guide core.

[0031] The nylon flow guide core 5 is inserted into the horizontal straight pipe of the reducing tee piece, and the limiting recess 5-4 of the nylon flow guide core 5 is limited and matched with the limiting boss 1-6 built-in at one end of the horizontal straight pipe, so as to avoid the nylon flow guide core 5 from rolling horizontally in the cavity. The flow guide through hole 5-1 is spliced together with the flange flow guide pipe at both ends, and the flow guide hole positioning recess 5-5 is coaxially installed with the flange flow guide pipe 2-1 at both ends of the flow guide through hole 5-1. The inner diameters of the flow guide through hole 5-1, the flange flow guide pipe 2-1 and the pneumatic ball valve flow guide pipe 3-1 are the same and on the same axial line, and the tolerance is designed and processed to reduce the installation error.

[0032] The vertical pipe flange plate 1-5 in the reducing tee piece 1 has a groove on the end face for placing the first O-ring 7. The vertical pipe flange plate 1-5 is used for installing the flange plate of the magnetic cutting type sensor and is fixed and sealed by bolts. The magnetic cutting type sensor descends from outside to inside through the sensor mounting hole 5-3 until the bottom of the magnetic cutting type sensor matches the sensor positioning groove 5-2. At this time, the measurement point of the magnetic cutting type sensor is just located on the axial center of the flow guide through hole 5-1. A water flow direction mark 1-1 is engraved on the outer surface of the reducing tee piece 1, mainly for quickly identifying the fluid direction.

[0033] The nylon flow guide core 5 is integrally processed with a non-metal nylon base material, and when the magnetic cutting type sensor is installed on the reducing tee piece 1 and matches the sensor positioning groove 5-2, the measurement point of the magnetic cutting type sensor is in the magnetic strength range of non-metal material, which does not affect the change of the magnetic strength of the magnetic cutting type sensor.

[0034] The nylon flow guide core 5 is provided with a flow guide through hole 5-1 to replace the straight pipe of the reducing tee piece 1. The pipe diameter of the flow guide through hole 5-1 is reduced to reduce the required external fluid kinetic energy. Under the same flow, the reduced pipe diameter can increase the flow rate of the fluid, and the reduced pipe diameter of the flow guide through hole 5-1 can avoid the turbulence and gas-liquid two-phase flow caused by the pipe diameter change.

[0035] The guide flange end cover 2 is made of 022Cr17Ni12Mo12 austenitic stainless steel base material, and the flange guide pipe 2-1 and the guide flange plate 2-2 are coaxial, and a section of the flange guide pipe 2-1 is arranged on the end surface of the guide flange plate 2-2 and used for positioning and matching with the guide hole positioning recess 5-5; the other end surface of the flange guide pipe 2-1 is connected with the pneumatic ball valve guide pipe 3-1, wherein the inner diameters of the flange guide pipe 2-1 and the pneumatic ball valve guide pipe 3-1 are consistent, and the flange guide pipe 2-1 and the pneumatic ball valve guide pipe 3-1 are spliced and sealed through external threads.

[0036] The pneumatic ball valve 3 is a purchased product, which meets the requirements of pressure resistance and sealing and can realize the opening and closing actions of the valve. The outer ends of the pneumatic ball valve guide pipes at two ends are respectively fixedly installed into the water inlet 9 and the water outlet 10. After the two pneumatic ball valves 3 are opened, the flange guide pipe 2-1 and the pneumatic ball valve guide pipe 3-1 are in communication to circulate the fluid, and the flow direction of the fluid is consistent with the direction of the water flow indicated by the water flow direction mark 1-1. After the valves are closed, the flange guide pipe 2-1 and the pneumatic ball valve guide pipe 3-1 are cut off, thereby forming a closed cavity which can be pressure tested.

[0037] The support 4 is used for horizontally supporting the reducing tee, and the support is provided with two support bodies. The upper ends of the two support bodies are welded to the lower part of the reducing tee through arc surfaces, and the lower ends of the two support bodies are provided with planes arranged at the same height, so that the support 4 can be placed on the ground or installed on a platform through the support hole 4-1.

[0038] The fastening bolt 6 is composed of a bolt 6-4, a gasket 6-3, an elastic washer 6-2 and a nut 6-1, and is used for fastening the installation end surface.

[0039] In the embodiment of the utility model, the reducing tee 1, the guide flange end cover 2, the pneumatic ball valve 3, the support 4, the nylon guide core 5, the fastening bolt 6, the first O-shaped ring 7 and the second O-shaped ring 8 are assembled with high precision by using precise measuring instruments such as a laser alignment instrument and a lever micrometer, and the reducing tee 1 and the guide flange end cover 2 are subjected to pickling and passivation treatment before being installed.

[0040] In the embodiment of the utility model, first, the nylon guide core 5 is placed into the reducing tee 1, and the nylon guide core 5 is provided with only one limiting recess 5-4, and the installation direction is consistent with the position of the limiting boss 1-6 of the reducing tee 1. After the limiting recess 5-4 and the limiting boss 1-6 are completely matched, the guide flange end cover 2 is installed to the straight-through pipe flange plate 1-4, and during the process, the guide hole positioning recess 5-5 and the flange guide pipe 2-1 are completely attached, the attachment surface is determined and measured through the inner cavity of the flange guide pipe 2-1, if there is a large gap between the attachment surfaces, the gap is filled with 618 type silicone or other silicone, and the glue surface should be coincided with the inner diameter of the attachment surface, if there is a large height difference between the attachment surfaces, the attachment surfaces are reprocessed or reassembled to ensure the coaxiality.

[0041] As an embodiment of the utility model, install pneumatic ball valve 3 to flange flow guide pipe 2-1, pneumatic ball valve flow guide pipe 3-1 with flange flow guide pipe 2-1 should be completely pasted, determine and measure pasting surface through the inner chamber of pneumatic ball valve flow guide pipe 3-1, if there is a larger gap between pasting surface, fill the gap with 618 type silica gel or other silica gel, and the glue surface should coincide with the inner diameter of the pasting surface, if there is a larger height difference between pasting surface, reprocess or reassemble to ensure its coaxiality.

[0042] As an embodiment of the utility model, install the flange plate of magnetic cutting type sensor to the vertical pipe flange plate 1-5 in reducing tee 1, first install the magnetic cutting type sensor to sensor positioning groove 5-2, bolt the through hole of vertical pipe flange plate 1-5, and the first O ring 7 seals the flange plate surface of magnetic cutting type sensor and the surface of vertical pipe flange plate 1-5.

[0043] As an embodiment of the utility model, connect the pressure pipeline of peripheral air compressor to pressure test hole 1-3, connect the pointer pressure gauge to pressure gauge hole 1-2, connect the external fluid flow source to water inlet 9, and connect the external fluid flow source to water outlet 10. The external flow source is the fluid source of the peripheral circulating water tunnel test device, provides stable laminar fluid for the water inlet, and the fluid flows out of the water outlet. The water inlet flow rate is less than the water outlet flow rate, and the fluid forms a karman vortex street after passing through the surface of the magnetic cutting type sensor. When the water outlet fluid flow rate is greater than the water inlet fluid flow rate, the formed karman vortex street can be effectively dragged behind the magnetic cutting type sensor, avoiding the influence of the vortex generated by the karman vortex street on the magnetic cutting type sensor.

[0044] As an embodiment of the utility model, when the two pneumatic ball valves 3 are in the open valve state, the external fluid circulates through the water inlet 9, the pneumatic ball valve flow guide pipe 3-1, the flange flow guide pipe 2-1, the flow guide through hole 5-1 and the water outlet 10 of the device in sequence. During the circulation, the phase of the marine magnetic cutting type sensor is judged, whether the signal phase of the magnetic cutting type sensor is consistent with the base frequency signal phase is checked, the flow value of the fluid source of the water tunnel test device is known, the fluid flow diameter of the device is the same, the fluid flow rate of the device can be calculated, which is used for matching the flow rate of the marine magnetic cutting type sensor. The fluid flow rate of the device is equivalent to a relatively accurate relative speed, so that the relative speed of the marine magnetic cutting type sensor matches the relative speed of the fluid of the device.

[0045] As the embodiment of the utility model, when two pneumatic ball valves 3 are in the valve closing state, there is accumulated water in the cavity of the reducing tee 1 and the flow guiding through hole 5-1 in the nylon flow guiding core 5, and the cavity in the reducing tee 1 forms a closed cavity that can be pressure tested. When the peripheral air compressor supplies pressure to the pressure testing hole 1-3, because water is an incompressible fluid, energy can be better transmitted, and the marine magnetic cutting type sensor is always in the water containing pressure, thereby realizing the water pressure resistance test on the magnetic cutting type sensor.

[0046] Although the embodiments and drawings of the utility model are disclosed for the purpose of illustration, those skilled in the art can understand that various substitutions, changes and modifications are possible without departing from the spirit of the utility model and the appended claims, therefore, the scope of the utility model is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A magnetic force cutting sensor experimental device, characterized by: The utility model relates to a kind of test devices of circulating water hole, including eccentric tee piece, nylon guide core, guide flange end cover, pneumatic ball valve; The eccentric tee piece is composed of horizontal straight pipe and vertical pipe communicated with the upper middle part of horizontal straight pipe, vertical pipe flange is arranged at the end of vertical pipe, pressure test hole and pressure gauge hole are arranged at both sides of vertical pipe respectively, straight pipe flange is arranged at both ends of horizontal straight pipe;The outer diameter of nylon guide core matches with the inner diameter of horizontal straight pipe of eccentric tee piece, guide through hole is processed in the axial center of nylon guide core, sensor mounting hole and sensor positioning groove are processed in the middle of nylon guide core along radial direction, and sensor mounting hole and sensor positioning groove are vertically arranged and communicated through guide through hole;The guide flange end cover is composed of guide flange and flange guide pipe welded with the center hole of guide flange; The nylon guide core is inserted into horizontal straight pipe of eccentric tee piece in a way that one end is positioned, the vertical pipe of eccentric tee piece is coaxially aligned with sensor mounting hole on nylon guide core;The magnetic cutting sensor fixedly connected with vertical pipe flange through upper end flange is inserted into sensor mounting hole through vertical pipe, and the measuring point of magnetic cutting sensor is located on the axis of guide through hole through sensor positioning groove; The guide flange of two guide flange end covers is fixedly connected with straight pipe flange at both ends through bolt and second sealing ring in end face, and flange guide pipe of two guide flange end covers is coaxially positioned and matched with guide through hole of nylon guide core at both ends; One end of pneumatic ball valve guide pipe of two pneumatic ball valves is coaxially fixedly connected with outer end of flange guide pipe at both ends, and water inlet and water outlet are fixedly installed at the outer end of two pneumatic ball valve guide pipes respectively;The water inlet and water outlet are connected with peripheral circulating water hole test device;The inner diameter of guide through hole is same with flange guide pipe at both ends and pneumatic ball valve guide pipe at both ends; Pressure test hole and pressure gauge hole on eccentric tee piece are connected with pressure test source pipe and pressure gauge respectively; Eccentric tee piece and guide flange end cover are made of austenitic stainless steel.

2. The magnetic force-cleaving sensor lab device of claim 1, wherein: Guide hole positioning recess is arranged at both ends of guide through hole, and is inserted and positioned with flange guide pipe at both ends.

3. The magnetic force-cleaving sensor lab device of claim 1, wherein: Limiting recess is arranged at one end of outer ring of nylon guide core, and limiting recess is limiting matched with limiting boss arranged in one end of horizontal straight pipe.

4. The magnetic force-cleaving sensor lab device of claim 1, wherein: Water flow direction mark is engraved on the outer surface of eccentric tee piece.

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