JP2005214825A - Temperature recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temperature recorder of high safety easily attachable and detachable without using a tool or the like. <P>SOLUTION: This temperature recorder 30 is attached to a power transmission facility such as a switch, measures a temperature in an attached part therein, and is provided with a transmission function for storing a measured data therein in a storage medium in response to requirement, and for transmitting it at a prescribed time by a radio wave. A casing 30A of the temperature recorder 30 has a pair of projected parts 31 positioned by bolts 20 projected from a connection terminal 21, and a permanent magnet 32 is attached on an upper face of the each projected part 31. The temperature recorder 30 is fixed with the bolts 20 by attractive force due to magnetic force of the permanent magnet 32. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a temperature recording device attached to a power transmission facility or the like, and more particularly to a temperature recording device that facilitates replacement of a temperature recording device that monitors a temperature change of a railroad power transmission facility.

  The electric power supplied to the railway vehicle is obtained by converting 154 kV electric power output from the ultra high voltage substation through the primary substation into a voltage corresponding to the application at the railway substation. Railway substations are divided into DC substations and AC substations. In DC substations, the received AC power is converted by a current transformer to DC 1500V, 750V, or 600V and supplied to the train line. ing. Moreover, in the AC substation, the received AC power is stepped down to a predetermined voltage by a transformer device to be converted into AC 30 kV and 22 kV and supplied to the train line.

  In such an ultra-high pressure section, if looseness occurs in a switch or a buspa attachment section, there is a problem that heat is generated due to poor contact and the like is damaged. In addition, such a place is also a dangerous place, and it is difficult for workers to monitor it. Therefore, a thermosensitive body such as a thermo label is attached to the object to be monitored, and the discoloration of the temperature indicator is monitored from a distance. (For example, refer to Patent Document 1).

  Although monitoring with a thermo label can grasp the temperature abnormality of the monitoring target based on the discoloration of the temperature indicator, it is impossible to detect the time of occurrence and the circumstances leading to the temperature abnormality, and as a result, it is impossible to avoid an accident. is there.

  In order to solve such a problem, the present inventors have proposed a temperature recording device that detects a temperature to be monitored at a predetermined interval and stores a temperature measurement value in a history memory as a history (for example, (See Patent Document 2).

  This temperature recording device includes a temperature sensor, a wireless unit that wirelessly transmits a history of temperature measurement values obtained by the temperature measurement operation by the temperature sensor, a battery that serves as a power source for the wireless unit, and the like in a watertight case. It is formed and is fixed to the monitoring target by the mounting member.

According to this temperature recording apparatus, when a history of temperature measurement values wirelessly transmitted from the temperature recording apparatus is received by the receiving slave station and transmitted to the monitoring unit, when an abnormality has occurred in the monitoring target, and the abnormality has occurred. You can know the process quickly.
JP-A-5-66714 JP 2002-267538 A

  However, according to the conventional temperature recording device, since it is fixed using a mounting member such as a screw when mounting to the monitoring target, not only tools are required, but there are many mounting points and maintenance There is a problem that it takes time and labor when it is necessary to attach and detach due to inspection or the like. In particular, in a narrow place or high place, the use of tools or the like may be dangerous because an operator may be forced to take an unnatural posture.

  Accordingly, an object of the present invention is to provide a highly safe temperature recording apparatus that can easily and reliably attach and detach the temperature recording apparatus without using a tool or the like.

  In order to achieve the above object, the present invention is mounted on a power transmission facility such as a switch, measures the temperature of the mounting section, stores the measurement data in a storage section as necessary, and stores the measurement data at a predetermined timing. In the temperature recording device that wirelessly transmits the temperature recording device, the temperature recording device includes a protrusion that is positioned on a mounting member such as a bolt that protrudes from an installation surface, and the housing is attached to the mounting member via the protrusion. There is provided a temperature recording apparatus characterized in that a magnetized portion for magnetically adhering to is provided.

  The protrusion may have a structure having a recess that fits into the head or tip of the mounting member.

  The attachment member may be a bolt for fixing the connection terminal to which the power transmission cable is connected to the bus spa.

  The magnetized part is preferably a neodymium magnet having a large magnetic force.

  It is preferable that the housing includes a clip portion that is fixed so that a temperature sensor that measures the temperature based on magnetic attachment between the attachment member and the magnetic attachment portion is in close contact with the attachment member.

  According to the temperature recording device of the present invention, the protrusion is positioned by the attachment member such as a bolt protruding from the installation surface, and the protrusion is fixed by the magnetic attachment portion and the attachment member. There is no need for jigs or tools to attach the device, and it can be easily and reliably attached with one touch. Moreover, it is safe.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a switch of a power transmission facility that supplies power to an overhead line in a railway substation (AC substation). This switch is connected to a transformer device (not shown) and connected to a power supply side bus bar 1 formed of copper or the like and a power transmission cable 19 for supplying power to an overhead wire via a connection terminal 21. Side bus spa 2, movable electrode 3 that electrically connects and opens bus spas 1 and 2, support member 5 that supports bus spa 1 via insulator 4, and bus spa 1 that supports insulator 6 A supporting member 7, an insulator 8 for insulatingly fixing the bus spa 2 to the supporting member 7, a rotating shaft 9 for rotatably supporting the movable electrode 3 on the bus spa 2, and the movable electrode 3 and the shaft support portion 10. The connecting rod 11 connected via the connecting rod 11, the insulator 12 provided on the connecting rod 11, the L-shaped connecting member 14 connected to the connecting rod 11 via the shaft support portion 13, and the rotating shaft 14 </ b> A. The connection member 14 connected via the support member 7 A base portion 15 that is movably supported, a rod member 16 that is connected to the connecting member 14 via a rotating shaft 16A, and a rod member 16 that is connected to the shaft connecting portion 16B via a shaft connecting portion 16B to drive the rotational driving force in the horizontal direction. A driving direction converting member 17 that converts the driving force into a driving force, a driving force transmitting member 17A that transmits a driving force in a rotating direction supplied from a driving source (not shown) such as a motor to the driving direction converting member 17, and a driving force. A movable electrode drive member 18 having a shaft connecting portion 18A connected to the transmission member 17A by a connecting pin 17B, and a power transmission cable 19 for supplying power to an overhead wire (not shown), are formed of a metal material such as steel. The connection terminal 21 is fixed to the bus bar 2 with a bolt 20, and the temperature recording device 30 is magnetically fixed to the bolt 20 and records the temperature of the connection terminal 21.

[Detailed Configuration of Temperature Recording Device 30]
FIG. 2 is a detailed view showing a mounting portion of the temperature recording apparatus according to the first embodiment of the present invention. The temperature recording device 30 uses the same four as the number of connection terminals 21. Each of the temperature recording devices 30 is magnetized with a permanent magnet 32 on the top of a bolt 20 as an attachment member provided so as to penetrate the bus spa 2. The permanent magnet 32 is provided integrally with a protruding portion 31 that protrudes from the housing 30 </ b> A of the temperature recording device 30.

  3A and 3B show a mounting structure of the temperature recording device, where FIG. 3A is a cross-sectional view of a connection terminal portion, and FIG. 3B is a partially enlarged view showing a back surface shape of a fixing portion of the temperature recording device.

  As shown in FIG. 3A, the temperature recording device 30 has a housing 30A formed of a resin material having excellent heat resistance and cold resistance, and houses a circuit board 40 and a battery 50 as a power source therein. doing. The circuit board 40 is mounted with circuit components such as a semiconductor device for performing a temperature recording operation and a wireless communication operation with the outside, and is connected to rod-like temperature sensors 33 and 34 provided outside the housing 30A. . The battery 50 is a lithium battery. The temperature sensor 33 is fixed to the cable connection portion 21A with a tape or the like, and the temperature sensor 34 is engaged with a clip portion 30B provided on the bottom surface of the housing 30A.

  The protrusions 31 are provided on both sides of the housing 30 </ b> A and are placed on the bolts 20 for fixing the connection terminals 21 to the bus spa 2 as shown in FIG. A permanent magnet 32 is provided on the upper surface of the protruding portion 31 as a magnetized portion having a strong magnetic force, and the protruding portion 31 is fixed by being attracted based on the magnetic force of the permanent magnet 32.

  The bolt 20 is made of iron or an alloy containing iron, and is fixed to the connection terminal 21 by a nut 22. As the permanent magnet 32, a neodymium magnet capable of obtaining a strong magnetic force is used. Here, the permanent magnet 32 is plate-shaped, but the shape is not particularly limited as long as a magnetic force capable of fixing the temperature recording device 30 is obtained, and may be round, elliptical, or the like. Alternatively, it may be a “B” shape surrounding the casing or a “U” shape.

  Since the bolt 20 is smaller than the temperature recording device 30, it may be difficult to position the temperature recording device 30. Therefore, as shown in FIG. 3B, a recess 31 </ b> A that fits into the head of the bolt 20 is provided on the lower surface of the protrusion 31. If the recess 31A is fitted to the head of the bolt 20 from above, the temperature recording device 30 can be easily positioned without shifting from the fixed position to the left and right and back and forth.

  The above is the case where the temperature recording device 30 is attached. To remove the temperature recording device 30, it is only necessary to remove the permanent magnet 32 from the protrusion 31 and remove the temperature recording device 30 from the bolt 20.

[Circuit Configuration of Temperature Recording Device 30]
FIG. 4 is a functional block diagram of circuit components mounted on the circuit board. The circuit board 40 includes a clock control unit 42 that controls a clock function in the circuit based on a reference clock output from the oscillator 41, a register 43 that temporarily stores time data output from the clock control unit 42, An ID unit 44 that stores a 64-bit serial number uniquely assigned to a semiconductor device that constitutes a circuit component, and an interface (I / F) unit 45 that controls data input / output to / from the wireless communication unit 49. A memory 46 for storing various programs such as a temperature recording operation and a temperature recording output operation and arbitrary data, temperature sensors 33 and 34 for outputting a temperature detection signal corresponding to the temperature, and A / D for the temperature detection signal. A measurement control unit 47 that converts and outputs to the memory 46 together with the output of the clock control unit 42, a temperature recording control unit 48 that controls each unit, and a battery 50 They are connected by 51. The wireless communication unit 49 has an antenna (not shown) necessary for wireless communication.

[Interface with temperature recording device 30]
FIG. 5 is a schematic configuration diagram showing a signal transmission system between the temperature recording device and an external monitoring device. The temperature recording device 30 encodes the temperature recording data obtained based on the temperature measurement of the connection terminal 21 and transmits the encoded data to a receiving slave station 60 provided near the switch using, for example, a 315 MHz band radio wave. The receiving slave station 60 photoelectrically converts the received temperature recording data and transmits it to the monitoring device 70 via a communication line 65 such as an optical fiber cable.

  The monitoring device 70 is, for example, a personal computer including a keyboard as an input device, a storage medium such as a CPU and a hard disk, a display device, a device such as a CD-ROM, and temperature recording data from the receiving slave station 60. By analyzing the above, the temperature of the connection terminal 21, the measurement time, and the temperature change are grasped.

  The monitoring device 70 transmits signals of various setting values to the receiving slave station 60 as necessary, and wirelessly transmits the setting values from the receiving slave station 60 to the temperature recording device 30, thereby changing the setting of the temperature recording operation. It is also possible. In FIG. 5, the receiving slave station 60 performs wireless communication with a single temperature recording device 30, but it is also possible to perform wireless communication with a plurality of temperature recording devices 30. .

[Description of operation]
First, the temperature recording device 30 is initialized. This initialization is performed by connecting a terminal device (not shown) to the temperature recording control unit 48 of the temperature recording device 30. In initialization, the serial number stored in the ID unit 44 is read into the temperature recording control unit 48. After initialization, the alarm temperature in the temperature recording device 30 from the terminal device, the first measurement interval in normal operation (for example, 1 hour), the measurement time zone, the second measurement interval after the alarm temperature is measured (for example, (5 minutes) and other temperature measurement conditions, communication intervals with the receiving slave station 60 (for example, once every half day), communication procedures, and other initial settings. In addition, the ID is uniquely associated with the receiving slave station 60 that performs communication.

  After the initial setting, the local worker attaches the temperature sensors 33 and 34 of the temperature recording device 30. At this time, the temperature sensor 33 is attached to the cable connecting portion 21A with the fixing tape 33A. Further, the temperature sensor 34 is attached to the clip portion 30 </ b> B provided on the bottom surface of the temperature recording device 30. Next, the temperature recording device 30 is positioned and magnetized on the bolt 20. At this time, the temperature sensor 34 is brought into contact with the surface of the connection terminal 21. The local operator requests test communication from the operator who operates the monitoring device 70 after the installation work is completed, and causes the monitoring device 70 to output a serial number request signal.

  The receiving slave station 60 transmits a radio wave based on a serial number request signal input from the monitoring device 70 via the communication line 65. When the temperature recording control unit 48 receives the serial number request signal, it reads and transmits the serial number stored in the memory. The receiving slave station 60 receives the radio wave based on the transmitted serial number, photoelectrically converts it, and transmits it to the monitoring apparatus 101 via the communication line 65. The operator confirms whether or not the serial number received by the monitoring device 70 is the temperature recording device 30 to be communicated. In this way, communication with the monitoring device 70 is performed, and it is confirmed whether interference or communication failure has occurred.

  The temperature recording device 30 measures the temperature of the connection terminal 21 at the first measurement interval based on the initial setting value. In the temperature recording device 30, the temperature measurement signals input from the temperature sensors 33 and 34 are converted into electrical signals corresponding to the temperature by the measurement control unit 47, and sequentially stored in the memory 46. At this time, the time data output from the clock control unit 42 is stored together with the measurement time. The battery 50 supplies power necessary to perform temperature measurement and temperature recording with the temperature recording device 30, and waits in a standby mode with low power consumption after the end of these operations.

  The temperature recording control unit 48 transmits the temperature record to the receiving slave station 60 by operating the wireless communication unit 49 at the communication interval based on the initial setting value. In performing wireless communication, the serial number of the temperature recording device 30 is transmitted to the receiving slave station 60. Subsequently, the temperature records stored in the memory 46 are sequentially transmitted based on the radio wave. The receiving slave station 60 photoelectrically converts the received wave based on the temperature recording and transmits the signal light to the monitoring device 70 via the communication line 65. In the monitoring device 70, the received signal light is photoelectrically converted to analyze the temperature record.

  The temperature recording control unit 48 stores the temperature and the measurement time in the memory 46 as a temperature alarm record and operates the wireless communication unit 49 when the connection terminal 21 becomes high temperature exceeding the allowable temperature range. The wireless communication unit 49 wirelessly transmits the temperature alarm record to the receiving slave station 60. In addition, the temperature recording device 30 performs the temperature measurement of the connection terminal 21 with a small temperature measurement interval after detection of abnormal heat generation.

  According to the first embodiment described above, since the protruding portion 31 of the temperature recording device 30 is fixed to the bolt 20 using the permanent magnet 32, no jigs, tools, etc. are required, and it can be easily performed with one touch. Can be attached securely. Moreover, since no tools or the like are used, an unnatural posture is not imposed on the operator, and the tools or the like are not dropped, which is safe. In the first embodiment, the configuration in which the permanent magnet 32 is not fixed to the protruding portion 31 has been described. However, the permanent magnet 32 may be solidified on the protruding portion 31 by bonding or the like.

  In FIG. 2, the temperature recording device 30 is magnetically attached to two bolts. However, the temperature recording device 30 may be magnetically attached to one bolt and fixed to two or more bolts. You may make it do. Further, two or more permanent magnets 32 may be provided in the same place, and may be used in combination with an adhesive tape or an adhesive.

  In the first embodiment, the temperature recording device 30 for measuring the temperature of the bus spa 2 connected to the switch of the AC substation has been described. However, as another installation location, for example, a switch in the DC substation It can be applied to applications for measuring the temperature of non-conductive members such as bus spas, clamps attached to power transmission lines, main circuit connections such as substations, and insulators.

  FIG. 6 is a side view showing a modified example of the protruding portion in the first embodiment. The connection terminal 21 is shown in cross-section. In this modification, an inclined surface 31B is provided at a portion where the projecting portion 31 and the top portion 20A of the bolt 20 abut, and the top portion 20A of the bolt 20 is in close contact with the inclined surface 31B based on the magnetic force of the permanent magnet 32. It may be fixed. By setting it as such a structure, the protrusion part 31 does not produce a clearance gap or a rattle with respect to the volt | bolt 20, and the fixed state of the temperature recording apparatus 30 is stabilized more.

It is a schematic block diagram of the switch of the power transmission equipment which supplies electric power to an overhead line in a railway substation. It is detail drawing which shows the mounting part of the temperature recording apparatus which concerns on the 1st Embodiment of this invention. The attachment structure of a temperature recording apparatus is shown, (a) is sectional drawing of a connection terminal part, (b) is the elements on larger scale which show the back surface shape of the fixing | fixed part of a temperature recording apparatus. The functional block diagram of the circuit component mounted in a circuit board is shown. It is a schematic block diagram which shows the signal transmission system of a temperature recording apparatus and an external monitoring apparatus. It is a side view which shows the modification of the protrusion part in 1st Embodiment.

Explanation of symbols

1, buspa 2, buspa 3, movable electrode 4, insulator 5, support member 6, insulator 7, support member 8, insulator 9, rotating shaft 10, shaft support portion 11, connecting rod 12, insulator 13 14 A of shaft support parts, the rotating shaft 14, the connection member 15, the base part 16, the rod member 16A, the rotating shaft 16B, the shaft connection part 17, the drive direction conversion member 17A, the driving force transmission member 17B, the connection pin 18, and a movable electrode drive Member 18A, shaft connection part 19, power transmission cable 20, bolt 20A, top part 21A, cable connection part 21, connection terminal 22, nut 24, screw 30, temperature recording device 30A, housing 30B, clip part 31, protrusion 31A, Concave portion 31B, inclined surface 32, permanent magnet 33, temperature sensor 33A, fixing tape 34, temperature sensor 40, circuit board 41, oscillator 42, clock control unit 43, register 4, ID unit 45, I / F unit 46, memory 47, measurement control unit 48, temperature recording control unit 49, wireless communication unit 50, battery 51, bus 60, receiving slave station 65, communication line 70, monitoring device 101, Monitoring device

Claims (5)

A temperature that is mounted on a power transmission facility such as a switch, measures the temperature of the mounting section, stores the measurement data in a storage section as necessary, and has a transmission function that wirelessly transmits the measurement data at a predetermined timing In the recording device,
The temperature recording device is provided with a projecting portion positioned on a mounting member such as a bolt projecting from an installation surface in a housing, and a magnetized portion that magnetically attaches the housing to the mounting member via the projecting portion is provided. The temperature recording apparatus characterized by the above-mentioned.   The temperature recording apparatus according to claim 1, wherein the protrusion has a recess that fits into a head or a tip of the attachment member.   The temperature recording apparatus according to claim 1, wherein the attachment member is a bolt for fixing the connection terminal to which the power transmission cable is connected to the bus spa.   The temperature recording apparatus according to claim 1, wherein a neodymium magnet is used for the magnetized portion. The said housing | casing has a clip part which fixes so that the temperature sensor which measures the said temperature based on the magnetic attachment of the said attachment member and the said magnetic attachment part may closely_contact | adhere to the said attachment member. The temperature recording apparatus as described.

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