阅读说明：本技术 一种用于电涡流测功机的水冷系统及其清理方法 (Water cooling system for eddy current dynamometer and cleaning method thereof ) 是由 许华智 于 2020-03-17 设计创作，主要内容包括：本发明公开了一种用于电涡流测功机的水冷系统及其清理方法,属于电涡流测功机水冷系统领域,一种用于电涡流测功机的水冷系统及其清理方法,本方案可以实现使得电涡流测功机的冷却用水使用一般质量的工业用水,无需对冷却用水进行复杂和成本昂贵的处理,在电涡流测功机使用过程中,冷凝管内流动的冷却水和感应铁芯主体和活动帽之间发生热交换,冷却水靠近感应铁芯主体和活动帽的部分水温较高,因此水垢的晶核易在冷凝管与活动帽的交界处生成,同时附着在析晶棒上,便于后需的清理,减小水冷系统内结构对水冷系统整体的影响,不易因冷却效果受到影响而造成的电涡流测功机损坏,大幅缩减电涡流测功的使用成本。(The invention discloses a water cooling system for an eddy current dynamometer and a cleaning method thereof, belonging to the field of the water cooling system of the eddy current dynamometer, the scheme can realize that the cooling water of the eddy current dynamometer uses industrial water with common quality without complex and expensive treatment of the cooling water, the cooling water flowing in a condensation pipe exchanges heat with an induction iron core main body and a movable cap during the use of the eddy current dynamometer, the temperature of the part of the cooling water close to the induction iron core main body and the movable cap is higher, therefore, the crystal nucleus of water scale is easy to generate at the boundary of the condensation pipe and the movable cap and is attached to a crystal precipitation rod, the cleaning required later is convenient, the influence of the structure in the water cooling system on the whole water cooling system is reduced, and the eddy current dynamometer which is caused by the influence of the cooling effect is not easy to damage, the use cost of the eddy current power measurement is greatly reduced.)

1. The utility model provides a water cooling system for electric eddy current dynamometer machine, includes condenser pipe (1) and response iron core main part (3), and inserts in condenser pipe (1) response iron core main part (3), its characterized in that: the induction iron core main body (3) comprises a cylinder and a plurality of side wing protrusions which are fixedly connected on the side wall of the induction iron core main body (3), a movable cap (4) matched with the induction iron core main body is sleeved on the outer side of each side wing protrusion, a plurality of transition grooves (9) are dug on the cylinder, a limit screw (6) is fixedly connected on a groove bottom plate of each transition groove (9), one section of the groove bottom plate of each transition groove (9) is far away from the limit screw (6) and penetrates through the movable cap (4) and extends to the outer side of the movable cap (4), a locking nut (7) is connected on the limit screw (6) in a threaded manner, the locking nut (7) is located on the outer side of the movable cap (4), a compression spring (8) is fixedly connected between the groove bottom plate of each transition groove (9) and the movable cap (4), and the compression spring (8) is sleeved on the outer side of the limit screw (6), the condenser pipe (1) is provided with a plurality of positioning notches (2) matched with the movable cap (4), and the movable cap (4) is provided with a notch (5) matched with the positioning notches (2).

2. The water cooling system for the eddy current dynamometer as claimed in claim 1, wherein: the condenser tube (1) is made of transparent materials, and an observation window is arranged in the area where the condenser tube (1) and the induction core main body (3) are arranged in the eddy current dynamometer.

3. The water cooling system for the eddy current dynamometer as claimed in claim 1, wherein: a rubber pad is connected between the side wall of the positioning notch (2) and the movable cap (4), and the rubber pad is fixedly connected with the side wall of the positioning notch (2).

4. The water cooling system for the eddy current dynamometer as claimed in claim 1, wherein: the groove wall of the notch groove (5) is fixedly connected with a plurality of crystallization rods (10), and the plurality of crystallization rods (10) are uniformly distributed.

5. The water cooling system for the eddy current dynamometer as claimed in claim 1, wherein: the inner wall of the movable cap (4) and the outer wall of the protruding flank are smooth surfaces, and when the induction iron core main body (3) and the movable cap (4) are inserted into the condensation pipe (1), the inner wall of the movable cap (4) is in close contact with the protruding flank.

6. The water cooling system for the eddy current dynamometer as claimed in claim 1, wherein: be connected with multiunit stop screw (6), lock nut (7) and compression spring (8) between response iron core main part (3) and activity cap (4), and evenly distributed between a plurality of stop screw (6), it has a plurality of with stop screw (6) assorted aqueduct (9) to cut on response iron core main part (3).

7. The cleaning method for the water cooling system of the eddy current dynamometer according to claim 1, wherein: the main process comprises the following steps:

s1, preparing for cleaning, wherein when a technician finds that a large amount of scale appears at the joint of the condensation pipe (1) and the movable cap (4) during normal inspection of the eddy current dynamometer, the eddy current dynamometer is stopped to prepare for cleaning;

s2, disassembling parts, releasing the fixation between the condensation pipe (1) and the induction core main body (3), and drawing the induction core main body (3) out of the condensation pipe (1);

s3, cleaning the iron core, loosening a plurality of locking nuts (7), ejecting the movable cap (4) in a direction away from the protrusion of the side wing under the action of a compression spring (8) in a compression state, loosening the scale growing in the notch groove (5) under the action of the movable cap (4), pressing the movable cap (4) for many times, and loosening the movable cap, wherein under the action of the compression spring (8) in the compression state, the movable cap (4) moves back and forth to impact the scale to loosen the scale, and then uniformly cleaning the loosened scale;

s4, cleaning the condensation pipe, screwing the locking nut (7) again, inserting the induction iron core main body (3) and the movable cap (4) back into the condensation pipe (1) again and fixing, introducing weak acidic liquid into the condensation pipe (1), cleaning the interior of the condensation pipe (1), loosening scale at the joint of the condensation pipe (1) and the movable cap (4) due to the disassembly of the induction iron core main body (3) and the movable cap (4) in the process of disassembling parts S2, separating the scale from the inner wall of the condensation pipe (1) under the action of the weak acidic liquid, and achieving the purpose of cleaning the scale;

s5, finishing cleaning, continuously introducing cooling water into the condensation pipe (1) after the condensation pipe is cleaned, and further cleaning the inner wall of the condensation pipe (1) to ensure that the residue of the weakly acidic solution is not suitable to appear on the inner wall of the condensation pipe (1) and the outer wall of the movable cap (4), thereby reducing the erosion of the weakly acidic solution to the movable cap (4).

8. The cleaning method for the water cooling system of the eddy current dynamometer according to claim 7, wherein: and S1, in the preparation of cleaning, when the temperature of the induction iron core main body (3) and the movable cap (4) rises too fast in the normal operation process of the eddy current dynamometer, arranging technicians to patrol the condenser tube (1) and the movable cap (4) as soon as possible.

9. The cleaning method for the water cooling system of the eddy current dynamometer according to claim 7, wherein: and S2, in the process of part disassembly, before the induction core main body (3) is drawn out, high-pressure gas needs to be continuously injected into the condensation pipe (1).

10. The cleaning method for the water cooling system of the eddy current dynamometer according to claim 7, wherein: in the S4 and condenser tube cleaning, diluted white vinegar can be selected as the weak acid solution, and the volume ratio of the white vinegar to the water for dilution is 1: 7.

Technical Field

The invention relates to the field of water cooling systems of eddy current dynamometers, in particular to a water cooling system for an eddy current dynamometer and a cleaning method thereof.

Background

The eddy current dynamometer is a measurement test device which is widely applied in domestic markets, and forms torque and power consumption by utilizing an electromagnetic induction principle. The vortex brake mainly comprises a vortex brake (a rotor part, a vortex ring, an excitation winding and the like), a force measuring assembly, a speed measuring assembly, a control system and the like.

The electric eddy current dynamometer absorbs power by using the principle of eddy current loss. The dynamometer consists of a dynamometer, a controller and a force measuring device, and can measure the output torque and the rotating speed of the measured machine so as to obtain the output power. The device can replace a magnetic powder clutch, a hydraulic dynamometer, a direct current generator set and the like, is used for measuring the performance of various power machines such as motors, gasoline engines, diesel engines, gear boxes and the like, becomes necessary equipment for type tests, and has higher reliability, practicability and stability compared with other dynamometer devices.

The magnetic flux generated when the direct current passes through the exciting coil coaxially fitted with the rotor forms a closed circuit through the eddy current ring, the air gap and the rotor. Since the rotor and the oscillating portion are made of magnetic materials, the magnetic resistance is small, so that the magnetic flux density is mainly determined by the size of the air gap. The outer surface is provided with uniform teeth and grooves, and a magnetic field is generated when the magnetic induction of any point on the air gap and the inner surface of the armature body or the vortex ring is changed, so that vortex electric potential is generated by induction, and vortex electricity is obtained. At the same time, through the eddy of eddy current and magnetic field, the rotor produces braking torque, and the oscillating body produces torque the same as the dragging torque, and the torque value may be detected by the sensor. The power output by the engine is converted into equivalent heat generated by full flow on the swinging body, and the heat is taken away by continuous cooling water entering the inner surface of the armature body or a vortex ring cooling water tank.

In order to ensure that the eddy current dynamometer can normally work for a long time and prevent the eddy current dynamometer from being damaged due to the fact that the cooling effect is influenced by scaling in a cooling chamber of the eddy current dynamometer, the purification treatment of cooling water is very important, and the use cost of the eddy current dynamometer is severely limited.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a water cooling system for an eddy current dynamometer and a cleaning method thereof, which can realize that the cooling water of the eddy current dynamometer uses industrial water with common quality, does not need to carry out complex and expensive treatment on the cooling water, reduces the influence of the internal structure of the water cooling system on the whole water cooling system, is not easy to damage the eddy current dynamometer caused by the influence of the cooling effect, and greatly reduces the use cost of the eddy current dynamometer.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A water cooling system for an eddy current dynamometer comprises a condenser pipe and an induction core main body, wherein the induction core main body is inserted in the condenser pipe in a splicing mode, the induction core main body comprises a cylinder and a plurality of side wing protrusions which are fixedly connected to the side wall of the induction core main body, a movable cap matched with the induction core main body is sleeved on the outer side of each side wing protrusion, a plurality of transition grooves are formed in the cylinder and are connected with a limit screw rod, one section of the limit screw rod, which is far away from the transition groove bottom plate, penetrates through the movable cap and extends to the outer side of the movable cap, a locking nut is connected to the limit screw rod in a threaded mode and is located on the outer side of the movable cap, a compression spring is fixedly connected between the groove bottom plate of each transition groove and the movable cap and sleeved on the outer side of the limit screw rod, a plurality of positioning notches matched with the movable cap are formed in the condenser pipe, the last chisel of activity cap has and fixes a position scarce groove assorted breach groove, can realize making the cooling water of eddy current dynamometer machine use the industrial water of general quality, need not to carry out complicacy and the processing with high costs to the cooling water, reduces the water cooling system inner structure to the holistic influence of water cooling system, is difficult for receiving the eddy current dynamometer machine damage that causes because of the cooling effect, reduces the use cost of eddy current dynamometer by a wide margin.

Furthermore, the condenser pipe selects transparent material for use, and the region that condenser pipe and response iron core main part were arranged in the electric eddy current dynamometer is provided with the observation window, makes things convenient for technical staff to observe the concrete scale deposit condition in the condenser pipe, makes things convenient for technical staff routine maintenance.

Furthermore, a rubber pad is connected between the positioning notch side wall and the movable cap, and the rubber pad is fixedly connected with the positioning notch side wall, so that the rubber pad can increase the sealing performance between the positioning notch and the movable cap, and cooling water is not easy to flow out from a gap between the condensation pipe and the movable cap.

Further, fixedly connected with a plurality of crystallization stick and a plurality of crystallization stick evenly distributed on the cell wall of breach groove, at the in-process of cooling water scale deposit, precipitate the incrustation scale crystal nucleus and can preferentially adhere to on the crystallization stick, later the crystal nucleus is enriched to grow and is formed the incrustation scale, concentrates the technical staff of being convenient for with the incrustation scale and maintains the clearance.

Further, activity cap inner wall and the protruding outer wall of flank are smooth surface, and when response iron core main part and activity cap peg graft in the condenser pipe, activity cap inner wall and the protruding in close contact with of flank make the incrustation scale be difficult for generating and growing between activity cap and flank are protruding, make things convenient for follow-up clearance.

Further, be connected with multiunit limit screw, lock nut and compression spring between response iron core main part and the activity cap, and evenly distributed between a plurality of limit screw, it has a plurality ofly and limit screw assorted aqueduct to cut in the response iron core main part, makes to be connected more stably between response iron core main part and the activity cap, and the one end that the in-process that becomes flexible limit screw carries out incrustation scale clearance is difficult for appearing the one end of activity cap and loses restraint then suddenly plays and injures people's accident.

Further, a cleaning method for a water cooling system of an eddy current dynamometer comprises the following main processes:

s1, preparing for cleaning, wherein when a technician finds that a large amount of scale appears at the joint of the condensation pipe and the movable cap during normal inspection of the eddy current dynamometer, the eddy current dynamometer is stopped to prepare for cleaning;

s2, disassembling parts, removing the fixation between the condensation pipe and the induction core main body, and drawing the induction core main body out of the condensation pipe;

s3, cleaning the iron core, loosening a plurality of locking nuts, ejecting the movable cap in a direction away from the side wing protrusion under the action of a compression spring in a compression state, loosening scale growing at the notch groove under the action of the movable cap, pressing the movable cap for multiple times, loosening, moving the movable cap back and forth under the action of the compression spring in the compression state, impacting the scale to loosen the scale, and uniformly cleaning the loosened scale;

s4, cleaning the condensation pipe, screwing the locking nut again, inserting the induction iron core main body and the movable cap back into the condensation pipe again and fixing the induction iron core main body and the movable cap, introducing weak acid liquid into the condensation pipe, and cleaning the interior of the condensation pipe, wherein in the process of disassembling S2 parts, due to the disassembly of the induction iron core main body and the movable cap, scale at the joint of the condensation pipe and the movable cap is loosened, and the scale can be separated from the inner wall of the condensation pipe under the action of the weak acid liquid, so that the purpose of cleaning the scale is achieved;

and S5, after the cooling pipe is cleaned, continuously introducing cooling water into the cooling pipe to further clean the inner wall of the cooling pipe, so that the residue of the weak acidic solution is not easily generated on the inner wall of the cooling pipe and the outer wall of the movable cap, and the corrosion of the weak acidic solution to the movable cap is reduced.

Furthermore, in the S1 cleaning preparation, when the temperature of the induction core main body and the movable cap is too fast, technicians should be arranged to inspect the condensation pipe and the movable cap as soon as possible, so that the induction core main body and the movable cap are not easy to overload.

Furthermore, in S2, the part is dismantled, before taking the response iron core main part out, need last rush into high-pressure gas in the condenser pipe, with remaining liquid in the condenser pipe completely discharge, avoid the dismantlement process to appear the weeping phenomenon, be difficult for polluting the electric eddy current dynamometer.

Further, in the step of cleaning the condensation pipe by the step S4, diluted white vinegar can be selected as the weak acidic solution, and the volume ratio of the white vinegar to the water for dilution is 1: 7.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

the scheme can realize that the cooling water of the eddy current dynamometer uses industrial water with common quality, complex and expensive treatment on the cooling water is not needed, in the using process of the eddy current dynamometer, the cooling water flowing in the condensation pipe exchanges heat with the induction iron core main body and the movable cap, the water temperature of the part of the cooling water close to the induction iron core main body and the movable cap is higher, the solubility of scale deposit is reduced along with the rise of the water temperature, therefore, crystal nuclei of the scale deposit are easy to generate at the junction of the condensation pipe and the movable cap and are simultaneously attached to the crystallization rod, the crystal nuclei of the scale deposit attached to the crystallization rod gradually grow into scale deposit with larger volume along with the use of the eddy current dynamometer, and the scale deposits are all positioned at the junction of the condensation pipe and the movable cap, the cleaning required later is convenient, the influence of the structure in the water cooling system on the whole water cooling system is reduced, and the eddy current dynamometer not easy to be damaged due to the influence on the cooling effect, the use cost of the eddy current power measurement is greatly reduced.

Drawings

FIG. 1 is a schematic view of a partial structure of a water cooling system according to the present invention;

FIG. 2 is a schematic view of a partial structure of a water-cooled tube according to the present invention;

fig. 3 is a partial structural schematic view of an induction core according to the present invention;

fig. 4 is an exploded view of the main structure of the induction core of the present invention;

FIG. 5 is a schematic view of the structure at A in FIG. 4;

fig. 6 is a top cross-sectional view of an inductive core of the present invention;

fig. 7 is a schematic front view of the notch of the removable cap according to the present invention.

The reference numbers in the figures illustrate:

1 condenser pipe, 2 positioning notch grooves, 3 induction iron core main bodies, 4 movable caps, 5 notch grooves, 6 limiting screws, 7 locking nuts, 8 compression springs, 9 transition grooves and 10 crystal precipitation bars.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.