JP2011101485A - Noncontact continuous power supply - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost and simple apparatus for continuously supplying power in a contactless manner without use of any cable for connection between a rotary container and an external fixed part for an internal temperature measuring device of the rotary container which measures an internal temperature of a rotary container and transmits measured data to an external device. <P>SOLUTION: A power receiving coil has such a simple structure where a coil in which a copper wire is wound flat is sandwiched with insulating plates of flexible resin, and is attached side by side on the outer periphery on the side of rotary container. The electromagnetic wave from a non-contact power transmission antenna installed at a predetermined external position is radiated to the power receiving coil. So, power is supplied without interruption in a contactless manner, allowing non-contact data transmission at an arbitrary timing. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  In order to effectively monitor the internal temperature of a rotating container and / or control the temperature inside the rotating container, the present invention measures the temperature inside the rotating container in real time, and sends the rotating container to an external monitoring and / or control device. It is related with the non-contact continuous electric power feeder which transmits electric power continuously, being non-contact between an external fixing part.

  In controlling combustion in a vessel such as a combustion furnace, it is necessary and effective to measure the temperature distribution inside the vessel and transmit the data to the combustion control device in real time. However, in the case of a rotary kiln furnace or the like, it is necessary to transfer power and data between devices that are in a relatively rotating relationship. Conventionally, the contact type of the slip ring or trolley method is mainly used, and in recent years, the non-contact type is inductively fed. A method of superimposing data on the electromagnetic wave has been used.

  When a conventional contact type data transmission device is applied to a rotary kiln furnace, a slip ring and a trolley overhead wire must be installed all around the side surface of the furnace due to the structure of the furnace, and the equipment becomes large and expensive. In addition, the maintenance cost is high due to mechanical wear of the contact portion.

  In recent years, a non-contact data transmission device in which communication data is superimposed on inductive power feeding has been adopted. However, in order to superimpose data on a power feeding / receiving coil for inductive power feeding, Communication was possible only when the stationary power transmission coil was facing, and data could not be transmitted at free timing. In addition, since communication data is superimposed on inductive power feeding, a separation device for power and communication data is required, and there is a problem that it is difficult to reduce the size of the device.

  The present invention has been devised in view of the above-described problems to solve the problem, and is inexpensive and non-contact with a temperature measuring device inside a rotating container and a data transmission device for sending measurement data to the outside. It aims at providing the non-contact continuous electric power feeder which supplies electric power continuously.

  In order to achieve the above-mentioned problems, the invention of claim 1 is an apparatus for measuring the temperature inside a rotating cylindrical rotating container. The power receiving unit configured to be connected is installed along the same rotation path on the outer peripheral surface of the rotating container, and the output side of the rectifier of the power receiving unit is connected to a smoothing circuit installed on the outer peripheral surface of the rotating container. As a power supply device, a power transmission coil and a power transmission oscillator that supplies an alternating current to the power transmission coil are installed in a predetermined position on the rotation trajectory of the power receiving coil outside the contact from the rotation container, and with the rotation of the rotation container The power receiving coil includes means for installing the power receiving coil on the outer peripheral surface of the rotating container so that at least a part of the rotating power receiving coil always enters the directivity area of the power transmitting coil.

  The invention of claim 2 comprises the means according to claim 1, wherein the power receiving unit is composed of a plurality of sets, and the plurality of sets of power receiving units are continuously installed along the same rotation path on the outer peripheral surface of the rotating container.

  According to a third aspect of the present invention, in the first or second aspect, the power receiving coil of the power receiving section comprises means having a structure in which a winding of a copper wire wound in a plane is sandwiched between insulating films.

According to the first aspect of the present invention, the power receiving coil having a simple structure wound in a plane is placed on the outer periphery of the rotating container and enters the directivity area of the power transmitting coil installed at a predetermined position outside the rotating container in a non-contact manner. Therefore, regardless of the position angle of the rotating container, it can receive power from electromagnetic waves sent from the power transmission coil, and the current excited by the electromagnetic waves sent from the power transmission coil is rectified by a rectifier. By smoothing, electric power can be continuously supplied in a non-contact manner to the temperature detection circuit and the data transmission device on the rotating container side.
As a result, electric power can be continuously supplied to the measurement circuit and the data transmission device such as the temperature of the rotary container such as a rotary kiln furnace without contact by electromagnetic waves regardless of the position angle of the rotary container. This eliminates the need to synchronize the transmission timing with the rotational position, and enables measurement and data transmission at any timing.

  According to the second aspect of the present invention, it is not necessary to make each power receiving portion in accordance with the length of the outer periphery of the rotating container, and only the number of power receiving portions to be installed is adjusted according to the length of the outer periphery of the rotating container. Therefore, it can be easily handled and has high versatility. Therefore, non-contact continuous power feeding can be realized easily at low cost. In addition, it is possible to arrange a part of or all of the receiving coil in the directivity area of the power transmission coil with respect to the power receiving coil of various shapes such as a perfect circle, an ellipse, and a rectangle. A power receiving unit can be constructed.

  According to the third aspect of the present invention, the power receiving coil on the rotating container side has a simple and lightweight structure in which the winding is sandwiched between the insulating films, so that the rotating container can be easily installed on the outer periphery. In other words, since the power receiving coil is made of a flexible insulating film and copper wire, the attachment to the rotating container can be simply performed on the cylinder surface of the container, and the attaching operation is also simplified. Therefore, non-contact continuous power feeding can be realized easily at low cost.

It is a block diagram when the form for implementing this invention is shown and several sets of power receiving parts are installed in the outer peripheral surface of a rotation container. It is explanatory drawing of the power receiving part structural unit which consists of a receiving coil and a rectifier which show the form for implementing this invention. (A) is a perspective view which shows the structure of the receiving coil in the form for implementing this invention, (B) is a disassembled perspective view which shows the structure of a receiving coil. (A) is a side view of the power transmission coil which shows the form for implementing this invention, (B) is a front view of a power transmission coil. It is explanatory drawing of the installation concept of the non-contact continuous electric power feeder by the power transmission coil and power receiving coil which show the form for implementing this invention. It is a graph which shows the relationship between the distance of the horizontal direction of the center of the power transmission coil which shows the form for implementing this invention, and the center of a receiving coil, and the output of the rectifier circuit of a receiving unit structural unit. The positional relationship between the power transmission coil and the power reception coil and the output after rectification of each power reception unit constituting unit when the distance between the centers of the adjacent coils is 15 cm and eight power reception coils showing the mode for carrying out the present invention are installed. It is a graph which shows the relationship with the synthetic | combination output of the whole couple | bonded power receiving part. It is a block diagram when showing another form for implementing this invention, and installing a pair of power receiving part in the outer peripheral surface of a rotation container.

Hereinafter, the present invention will be described more specifically based on embodiments for carrying out the invention described in the drawings.
The form for implementing this invention is shown in FIG.1 and FIG.8. 2 comprising the power receiving coil 2 and the rectifier 3 of the present invention is used as a rotating container, for example, at least a part of the power receiving coil 2 enters the directivity area of the power transmitting coil 9 on the outer peripheral surface of the rotary kiln furnace 1. By installing in such a manner, it becomes possible to continuously supply the electric power necessary for the rotating container side data measurement and transmission device without providing a storage battery, and data transmission can be performed at a free timing without a break.

  FIG. 1 shows an embodiment for carrying out the present invention, and is a configuration diagram when a plurality of sets of power receiving units are installed on the outer peripheral surface of a rotating container. FIG. 2 is a configuration diagram of a power receiving unit structural unit including a power receiving coil and a rectifier. For example, the rotary kiln furnace 1 as a rotating container is installed sideways, for example, and rotates around a horizontal axis. Both ends of the rotary kiln furnace 1 (not shown) are rotatably supported by rollers or the like.

  In FIG. 1, a plurality of sets of power receiving coils 2 of a power receiving unit are continuously installed along the same rotation path on the outer peripheral surface of the rotary kiln furnace 1 around the rotation direction of the outer periphery of the rotary kiln furnace 1. The power receiving coils of the plurality of sets of power receiving units that are continuously installed are installed at intervals at which at least a part of any of the other adjacent power receiving coils 2 always enters the directivity area of the power transmitting coil 9. .

  In FIG. 8, around the rotation direction of the outer periphery of the rotary kiln furnace 1, a pair of power receiving coils 2 of the power receiving unit are installed around the same rotation path on the outer peripheral surface of the rotary kiln furnace 1. A part of the power receiving coil 2 of the set of power receiving units installed around the circuit is installed such that a part thereof always enters the directivity area of the power transmitting coil 9.

  Around the rotation direction of the outer peripheral surface of the rotary kiln furnace 1, a plurality of sets of rectifiers 3 to which the copper wire ends of the respective power receiving coils 2 are connected are respectively installed. Further, on the outer peripheral surface of the rotary kiln furnace 1, a smoothing circuit 4, a furnace temperature measuring device 5, and a data transmission device 6 that receive a current from each rectifier 3 are installed. On the outer peripheral surface of the rotary kiln furnace 1, a rotating body side power supply device is configured by a smoothing circuit 4 that receives a current supplied from each rectifier 3.

  Outside the rotary kiln furnace 1, a power transmission coil 9 is installed in a non-contact state on a rotating track of a power receiving coil 2 installed on the outer peripheral surface, and a power transmission oscillator 10 that supplies an alternating current to the power transmission coil 9 is installed. Yes. In addition, a data receiver 7 and a data processing device 8 that receive data from the data transmission device 6 are installed outside the rotary kiln furnace 1. Power is supplied from an external power source to the power transmission oscillator 10 and the data processing device 8.

  Then, after rectifying the current generated by the power receiving coil 2 received by the power receiving coil 2 and excited by the rectifier 3 with the rectifier 3 by the power transmission oscillator 10 provided outside the rotary kiln furnace 1, the smoothing circuit 4 smoothes the current. Similarly, the temperature is supplied to the in-furnace temperature measuring device 5 and the data transmission device 6 attached to the rotary kiln furnace 1. The data transmission device 6 sends out the digital value of the furnace temperature measured by the furnace temperature measuring device 5 using the specific low power data communication, and is received by the data receiver 7 installed outside the furnace, and is sent to the data processing device 8. It has a structure to send.

  FIG. 3 is a perspective view and an exploded perspective view showing the structure of the power receiving coil. It has a simple structure in which a power receiving coil 2-2 in which a copper wire is wound in a loop on a plane is sandwiched between insulating films 2-1 and 2-3 having flexibility and insulating properties. Both ends of the copper wire of the receiving coil 2-2 are taken out of the insulating films 2-1 and 2-3 and connected to the rectifier 3 in FIG. As the shape of the power receiving coil 2 in which a copper wire is wound in a loop on a plane, various shapes such as a perfect circle and a rectangle can be used in addition to the illustrated ellipse.

  FIG. 4 is a side view and a front view of the power transmission coil. A power transmission coil 9-1 having a simple structure in which a copper wire wound in a planar loop is sandwiched between insulating films having flexibility and insulation is attached to the surface facing the rotary kiln furnace 1 of the power transmission coil housing 9-2. The alternating current generated by the transmitter 10 for power transmission in FIG. 1 is transmitted as an electromagnetic wave.

  FIG. 5 is an explanatory diagram of an installation concept of a non-contact continuous power feeding device using the power transmission coil 9 and the power receiving coil 2 in the embodiment for carrying out the present invention. The power transmission coil 9 is installed in a non-contact state slightly apart from the rotating rotary kiln furnace 1. Further, the power transmission coil 9 is installed at a predetermined position so that at least a part of each of the plurality of sets of power reception coils 2 continuously installed on the outer peripheral surface of the rotary kiln furnace 1 always enters the directivity area of the power transmission coil 9. Yes.

  Power transmission / reception by electromagnetic waves using a plurality of sets of receiving coils 2 continuously installed on the outer periphery of the rotary kiln furnace 1 and a power transmission coil 9 installed on a rotating surface of the receiving coil 2 at a predetermined position outside the rotary kiln furnace 1 The distance between the power transmission coil 9 and the power reception coil 2 is desirably 5 cm to 15 cm, and the frequency of the current flowing through the power transmission coil 9 is desirably 50 kHz to 200 kHz. In the embodiment, the distance between the coils is 8 cm, and the frequency is 100 kHz. In the above configuration, the number of turns of the power receiving coil 2 and the power transmitting coil 9 is 5 turns for the former, 15 turns for the latter, the outer shape of the power transmitting coil 9 is 10 cm × 25 cm, and the outer shape of the power receiving coil 2 is 8 cm × 15 cm. The ellipse.

  FIG. 6 is a graph showing the relationship between the lateral distance between the center of the power transmission coil 9 and the center of the power reception coil 2 and the output 12 of the rectifier circuit of the power reception unit constituting unit in the embodiment of the present invention. A curve 11 shows the output level of the rectifier circuit 12 at a position where the directivity center of the power transmission coil 9 with respect to the power receiving coil 2 is located.

  FIG. 7 shows a power receiving unit combining the positional relationship between the power transmitting coil 9 and the power receiving coil 2 and the output after rectification of each power receiving unit structural unit when eight power receiving coils 2 are installed with a distance of 15 cm between the centers of adjacent coils. 4 is a graph showing a relationship with the overall combined output 15; Electric power can be supplied at any position where the center of directivity of the power transmission coil 9 faces any one of the eight power receiving coils 2.

  In the above-described configuration, by continuously installing the power receiving coil 2 over the entire circumference of the rotating container, it is possible to continuously supply power regardless of the position of the rotating container.

  Not only temperature measurement but also the pressure of the rotating device using the configuration of the secondary power source of the non-contact continuous feeding consisting of the planar coil, the rectifier and the smoothing circuit of the present invention and the 2.4 GHz band specific low power data communication Measurement of various state quantities such as acceleration and non-contact transmission can be easily realized. In addition, when the required power of the rotating body side circuit is sufficiently small with respect to the capacitor capacity of the smoothing circuit, it is possible to continuously supply power while the rotating body is rotating by installing only one power receiving unit structural unit in FIG. .

DESCRIPTION OF SYMBOLS 1 Rotary kiln furnace 2 Power receiving coil 3 Rectifier 4 Smoothing circuit 5 In-furnace temperature measuring device 6 Data transmitter 7 Data receiver 8 Data processing device 9 Power transmission coil 10 Power transmission oscillator 11 Power received to one power coil and the position of the power transmission coil Curve showing level 12 Output of rectifier circuit of power receiving unit structural unit 13 Curve showing received power level with respect to positions of eight power receiving coils and power transmitting coil 14 Coupler 15 Output of secondary rectifier circuit

Claims (3)

In a device for measuring the temperature inside a rotating cylindrical rotating container, a power receiving coil constituted by connecting a copper coil wire receiving coil and a copper wire end to a rectifier is provided on the outer peripheral surface of the rotating container. Installed along the same rotation path, and connected to the smoothing circuit installed on the outer peripheral surface of the rotating container on the output side of the rectifier of the power receiving unit to form a rotating body side power supply device, supplying alternating current to the power transmission coil and the power transmission coil A power transmission oscillator is installed at a predetermined position on the rotating orbit of the power receiving coil outside the contact with the rotating container, and at least a part of the power receiving coil rotating with the rotation of the rotating container is always directed to the power transmitting coil. A non-contact continuous power feeding device, wherein the power receiving coil is installed on the outer peripheral surface of the rotating container so as to enter the sexual area. The non-contact continuous power feeding device according to claim 1, wherein the power receiving unit includes a plurality of sets, and the plurality of sets of power receiving units are continuously installed along the same rotation path on the outer peripheral surface of the rotating container. 3. The non-contact continuous power feeding device according to claim 1, wherein the power receiving coil of the power receiving unit has a structure in which a copper wire wound in a plane is sandwiched between insulating films.

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