JP6113514B2 - Silo temperature measuring cable with dropout alarm - Google Patents

Description

      The present invention relates to a silo temperature measuring cable that measures the temperature in a large silo that stores grains and the like, and a dropout alarm that prevents the tip of the temperature measuring cable from extending and falling with the passage of time of use and becoming a foreign object in stored items. Regarding attached silo temperature measuring cable.

      A large silo for storing grain or the like, like Patent Document 1, hangs a silo temperature measuring cable for measuring the temperature of the stored material from the upper part inside the silo. A large number of temperature sensors are attached to the suspended silo temperature measuring cable, and the temperature of the stored item in the silo can be measured.

      The temperature measurement in the silo is necessary to detect spontaneous ignition in the storage if the stored item is a flammable substance, or to maintain the preservation temperature in the case of food or the like. Although there is a method of attaching a temperature sensor to the side wall in the silo, only the temperature around the stored item can be measured, which is insufficient for detecting spontaneous ignition or the like.

JP2007-271289A

      In this large silo, the stored material is introduced from the upper part of the silo, and when the stored material is taken out, it is taken out from the lower outlet. For this reason, the silo temperature measuring cable suspended in the silo is subjected to a force from the top to the bottom as the stored material is introduced from the upper part and carried out from the lower part. For this reason, the resin cover etc. which coat | covers the cable in a temperature measurement cable by the influence of the force added to the downward direction from the top may extend below, and may be cut off at worst. The cut resin cover may become an impurity of the stored product.

In view of the above problems, the present invention provides the following silo temperature measuring cable with a dropout alarm. The first aspect, in the silo temperature measuring cables hanging down into the silo to measure the temperature in the reservoir silo, a cable connected to the temperature measuring terminal the temperature sensing terminal, resin cover for covering the lead wire And the lead wire is connected to a lead wire connecting portion that follows the tip of the resin cover when the resin cover is extended, and a lead wire connecting portion that follows the tip of the resin cover when the resin cover is extended. And a silo temperature measuring cable with a drop alarm, which has a reporting unit that issues a warning when the lead wire connecting unit is detached from the lead wire.

      As a second invention, when the resin cover is extended, the lead wire connecting portion is configured so that the lead wire connecting portion is detached from the lead wire before the lead wire connecting portion is dropped together with the resin cover front end portion. A silo temperature measuring cable with a dropout alarm described in the invention is provided.

      As a third invention, there is provided a silo temperature measuring cable with a drop alarm according to the first invention or the second invention having a lead wire winding portion for winding the lead wire in the vicinity of the lead wire connecting portion.

      Like this invention, it becomes possible to detect mixing of a foreign substance by detecting that the resin cover at the tip of a silo temperature measuring cable with a dropout alarm has dropped or extended in the silo and issuing an alarm. . In addition, the lead wire connecting part has a drop-off preventing hook part so that it does not fall off from the tip of the resin cover, so that the lead wire and the lead wire connecting part are separated before the resin cover drops into the silo. It becomes possible. As a result, an alarm is issued before the resin cover, which becomes a foreign substance, falls into the silo, and foreign substances can be prevented from being mixed. Furthermore, by having a lead wire winding portion for winding the lead wire in the vicinity of the lead wire connecting portion, the lead wire connecting portion can follow the extension of the resin cover. This makes it possible to lengthen the use period of the silo temperature measuring cable with a drop alarm and to issue an alarm before the tip of the resin cover drops into the silo.

The conceptual diagram for demonstrating the silo temperature measuring cable with a drop-off alarm of Embodiment 1. The conceptual diagram for demonstrating the silo temperature measuring cable with a drop-off alarm of Embodiment 1. The conceptual diagram for demonstrating the silo temperature measuring cable with a drop-off alarm of Embodiment 1. The conceptual diagram for demonstrating the silo temperature measuring cable with a dropout alarm of Embodiment 2 The conceptual diagram for demonstrating the silo temperature measuring cable with a dropout alarm of Embodiment 3

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, this invention should not be limited to these embodiments at all, and can be implemented in various modes without departing from the gist thereof.

      The first embodiment mainly relates to claim 1, the second embodiment mainly relates to claim 2, and the third embodiment mainly relates to claim 3.

<< Embodiment 1 >>
<Overview of Embodiment 1>
The present embodiment is a silo temperature measurement cable with a drop alarm that can issue an alarm when the resin cover at the tip of the silo temperature measurement cable is dropped in the silo temperature measurement cable hanging in the silo.

<Configuration of Embodiment 1>
The conceptual diagram for demonstrating the silo temperature measuring cable with a dropout alarm of this embodiment in FIG. 1 was shown. (A) of FIG. 1 is a conceptual diagram when the silo temperature measuring cable with dropout alarm (0101) of the present embodiment is suspended and installed in the silo (0102), and (b) is a dropout of the present embodiment. It is an enlarged view of the front-end | tip part of the silo temperature measuring cable with an alarm. Further, (c) is a perspective conceptual view of the tip portion of the tip portion of the silo temperature measuring cable with dropout alarm of the present embodiment that is solidified with resin. The silo temperature measuring cable with dropout alarm of the present embodiment is a silo temperature measuring cable that hangs down in the silo and measures the temperature of the storage in the silo, and a resin cover (0103) that covers the temperature measuring terminal and the lead wire, When the lead wire is connected and the resin cover is extended, a lead wire connecting portion (0105) that follows the tip of the resin cover (0104) and an alarm when the lead wire connecting portion is detached from the lead wire. And a reporting unit (0106) for reporting. In FIG. 1, the cable to which the temperature measuring terminal is connected is omitted in order to simplify the drawing. In addition to the actual silo temperature measuring cable with dropout warning, a core material for reinforcing the temperature measuring cable is incorporated. Hereinafter, all the drawings shown in this specification are the same.

      The “resin cover” covers the temperature measuring terminal and the lead wire. A large number of temperature measuring terminals and a cable connected to the temperature measuring terminals are arranged in the resin cover. The resin cover is made of a resin such as polyethylene. In addition, the material which comprises resin-made covers can be suitably changed according to the silo which arrange | positions the silo temperature measuring cable with a dropout alarm of this embodiment. For example, it may be changed according to the substance stored in the silo, or may be changed according to the temperature in the silo. The silo temperature measuring cable with dropout alarm according to the present embodiment is used by being suspended in the silo as described above. Moreover, since the stored item stored in the silo is carried out from the lower direction, the silo temperature measuring cable with a dropout alarm is always applied with a pulling force. For this reason, the resin-made cover comprised with resin, such as polyethylene, will be extended gradually by the force pulled downward. In the silo temperature measuring cable with dropout alarm of the present embodiment, when the resin cover is extended, the tip end portion of the resin cover is eventually cut and falls into the silo. However, the silo temperature measuring cable with a drop alarm according to the present embodiment can detect the drop of the resin cover by arranging a lead wire connecting portion to be described later at the tip of the resin cover. .

      As shown in FIGS. 1B and 1C, the “lead wire connecting portion” is hardened with the same kind of resin as the resin cover and fixed to the resin cover. The lead wire connecting portion moves together with the tip portion of the resin cover when the lead wire is connected and the resin cover described above is extended by the downward force applied. FIG. 2 shows a conceptual diagram when the lead wire connecting portion and the resin cover are extended. A hatched portion in FIG. 2 indicates a region solidified by the resin, and a broken line indicates a lead wire connecting portion fixed in the region solidified by the resin. In FIG. 2, the lead wires are omitted for explanation. FIG. 2A shows a state before the resin cover (0201) is extended, that is, a state in which the silo temperature measuring cable with dropout alarm is almost new. When this silo temperature measuring cable with dropout alarm is used for a long time, as shown in (b), it gradually extends from the tip of the silo temperature measurement cable with dropout alarm. Even in such a state, the lead wire connecting portion (0202) of the present embodiment is configured to follow the tip of the resin cover.

  When the resin cover extends as shown in FIG. 2B, the connection between the lead wire and the lead wire connecting portion is released. Thus, the flow of the electric current which flows into a lead wire is inhibited because a lead wire and a lead wire connection part leave | separate. In such a state, it is detected that the resin cover is extended and the tip portion is dropped.

      The reporting unit detects that the lead wire connecting unit has detached from the lead wire and issues an alarm. As shown in FIG. 1, the lead wire is connected to a lead wire connecting portion provided at the tip of the silo temperature measuring cable. When the lead wire connecting portion is detached from the lead wire, the lead wire is disconnected. When this disconnection is detected, the alarming unit issues an alarm. In addition to sound notification, the alarm may be generated by lighting or blinking of a lamp such as an LED, a screen display when a display is provided, a combination thereof, or the like.

      In addition, the alarm unit is generally installed in a device that records and processes temperature information obtained from the silo temperature measurement cable, such as a recorder or personal computer to which the silo temperature measurement cable is connected. It is configured to issue a notification when the section is detached from the lead wire. More specifically, the reporting unit is software (program) stored in a recorder, personal computer, etc., which operates in a memory area such as a recorder, RAM, etc., and connects to the lead wire. When it is detected that the unit is disconnected from the lead wire, the program is configured to execute an alarm by a speaker, lighting or blinking of a lamp such as an LED, display on a display, or the like.

      In the case of a configuration in which the lead wire is extended and connected to the lead wire connecting portion, attention should be paid to the location where the lead wire is extended, that is, the position of the connecting portion. Two lead wires are connected to the lead wire connection section. As described above, the silo temperature measuring cable with dropout alarm according to the present embodiment has a configuration in which the current flowing through the lead wire is obstructed by the disconnection of the lead wire connecting portion, and the alarm is generated by detecting this. It has become. For this reason, even if the lead wire connecting portion does not fall off, it is possible to issue an alarm by cutting the lead wire. However, when the lead wire is extended, the portion where the lead wire is connected may be cut. At this time, if two lead wires are connected at the same position, there is a possibility that the two lead wires may be disconnected from the connection portion at the same time. If two wires are disconnected at the same time, the current flowing through the lead wire is inhibited, and an alarm is issued. However, if two pieces are cut at the same position at the same time, the cut points may be short-circuited, and an alarm may not be issued. Therefore, when the lead wire is extended, it is necessary to arrange so that the connection position of the two lead wires is shifted to ensure that an alarm is issued.

<Embodiment 1 effect>
As in this embodiment, it is possible to detect the contamination of the foreign matter by detecting that the resin cover at the tip of the silo temperature measuring cable has dropped into the silo and issuing an alarm.

<Embodiment 2>
<Overview of Embodiment 2>
In the present embodiment, the lead wire connecting portion is prevented from dropping from the resin cover front end so that the lead wire connecting portion is detached from the lead wire before the tip of the resin cover drops into the silo. Has a drop-off prevention collar. In this way, by configuring the lead wire and the lead wire connecting portion to separate before the resin cover falls into the silo, an alarm is issued before the resin cover that becomes a foreign object falls inside the silo. It becomes possible to prevent foreign matter from being mixed.

<Configuration of Embodiment 2>
In this embodiment, the lead wire connecting portion of the silo temperature measuring cable with a drop alarm according to the first embodiment has a drop-off preventing collar portion so as not to drop from the tip of the resin cover, and the lead when the resin cover is extended. The lead wire connecting portion is configured to be detached from the lead wire before the wire connecting portion is dropped together with the front end portion of the resin cover.

      As described in Embodiment 1, the silo temperature measuring cable with dropout alarm of the present invention is detached from the lead wire by moving the lead wire connecting portion together with the tip of the resin cover when the resin cover is extended. The notification unit is configured to issue a warning. However, as shown in FIG. 3A, the front end (0304) of the resin cover is extended before the resin cover (0301) is extended and the lead wire (0302) is detached from the lead wire connecting portion (0303). ) Falls into the silo, the silo temperature measuring cable with a drop alarm of this embodiment cannot detect the drop. Also, as shown in Fig. 3 (b), when the resin cover is extended and the lead wire is detached from the lead wire connecting portion, if the lead falls off at the same time as the tip of the extended resin cover, an alarm is generated. It is reported that the tip of the resin cover cannot be prevented from falling into the silo. Therefore, as shown in FIG. 3C, if the lead wire and the lead wire connecting portion are separated before the resin cover extends and the tip falls off, the tip of the resin cover is placed in the silo. It is possible to issue an alarm before dropping out and prevent foreign matter from entering in advance.

      Therefore, the lead wire connecting portion of this embodiment needs to be separated from the lead wire and the lead wire connecting portion before the resin cover is extended and the tip is dropped. The tip of the cover must be firmly fixed. For example, as shown in FIG. 3A, when the cylindrical lead wire connecting portion is embedded in the tip portion of the resin cover, when the resin cover is extended, the resin cover is removed from the lead wire connecting portion. There is a possibility of falling out. Thus, if the resin cover falls off from the lead wire connecting portion, the lead wire connecting portion does not move away from the lead wire, so that it is not possible to detect the removal of the resin cover. Therefore, in the silo temperature measuring cable with a drop alarm according to the present embodiment, as shown in FIG. 4, when the lead wire connecting portion (0401) is provided with the drop prevention hook (0402) and the resin cover (0403) is extended. The lead wire connecting portion is locked to the drop-off preventing collar portion so that the lead wire connecting portion does not fall off from the front end (0404) of the resin cover. In addition, the size of the drop-off prevention hook is appropriately set according to the size (diameter) of the tip of the silo temperature measuring cable with drop-off alarm and the size of the lead wire connecting portion. Moreover, the number of drop-off prevention hooks may be one as shown in FIG. 4A, or may be plural as shown in FIG. Further, the position at which the drop-off preventing collar is provided may be disposed near the tip, or conversely near the connection position with the lead wire, as shown in (c).

<Embodiment 2 Effect>
Like the silo temperature measurement cable with dropout alarm of this embodiment, the lead wire connection part has a dropout prevention collar so that it does not fall off from the tip of the resin cover, so that the resin cover is not dropped into the silo. The lead wire and the lead wire connecting portion can be configured to be separated from each other. As a result, an alarm is issued before the resin cover, which becomes a foreign substance, falls into the silo, and foreign substances can be prevented from being mixed.

<Embodiment 3>
<Overview of Embodiment 3>
The present embodiment is characterized by having a lead wire winding portion for winding the lead wire in the vicinity of the lead wire connecting portion. As described in the first and second embodiments, the silo temperature measuring cable with dropout alarm according to the present invention is intended to prevent the tip of the resin cover from dropping off as a foreign substance in the silo. For this reason, as described in the second embodiment, the lead wire and the lead wire connecting portion are separated before the tip of the resin cover is dropped into the silo, and an alarm is generated. is necessary. However, even if the resin cover extends due to its own weight, it does not cut off immediately and does not fall off. On the other hand, the lead wire and the lead wire connecting part are pulled as the resin cover extends. Then, since the lead wire and the lead wire connecting portion do not extend, the connection is immediately released, and an alarm is issued. In this embodiment, even if the resin cover is extended, the alarm is not immediately issued, and the silo with a drop alarm is configured to issue an alarm before the resin cover tip part falls into the silo. Provide a temperature measurement cable.

<Configuration of Embodiment 3>
FIG. 5 shows a conceptual diagram of this embodiment. The silo temperature measuring cable with dropout alarm of the present embodiment has a lead wire winding portion that winds the lead wire near the lead wire connecting portion. As shown in FIG. 5 (a), the silo temperature measuring cable with dropout alarm according to the present embodiment has a lead wire winding unit (0502) that winds the lead wire (0502) near the lead wire connection unit (0501). 0503). The lead wire winding portion adjusts the length of the lead wire so that when the resin cover (0504) is extended, the lead wire connecting portion moves following the extension of the resin cover. If the lead wire is not wound on this winding part, if the lead wire connection part moves in the direction of the silo cable due to the extension of the resin cover, the lead wire will extend like a resin cover. Therefore, the lead wire and the lead wire connecting portion are cut off soon after the resin cover is extended, and an alarm is issued.

      In this case, since an alarm is issued before the resin cover is removed, the purpose of the silo temperature measuring cable with a drop alarm of the present invention has been achieved, but an alarm is issued if the resin cover extends even a little. The frequency of replacing the silo temperature measuring cable with dropout alarm will increase. For this reason, as described above, if the lead wire is wound around the winding portion, the lead wire connecting portion can follow the extension of the resin cover by the length of the winding. Thus, the replacement frequency of the silo temperature measuring cable with a dropout alarm can be suppressed.

      However, the amount of the lead wire wound around the winding portion needs to be configured so that an alarm can be issued before the tip of the resin cover falls into the silo.

      Here, the function of the lead wire winding unit will be described with reference to FIGS. As the cover progresses, the silo temperature measuring cable with dropout alarm of this embodiment is in a state where the resin cover is extended as shown in (b), and the lead wire wound around the lead wire winding portion is By extending, the lead wire connecting portion follows the tip of the resin cover. Further, as shown in (c), when the resin cover is extended, the lead wire wound around the winding portion is stretched beyond the wound lead wire, and the lead wire and the lead wire connecting portion. Is disconnected. In this state, the silo temperature measuring cable with dropout alarm according to the present embodiment is a replacement time, and an alarm is issued before the tip of the resin cover drops off. In addition, the position where the lead wire take-up portion is provided is such that the length of the lead wire can be freely adjusted so that the lead wire connecting portion can follow when the resin cover is extended near the tip of the resin cover. What is necessary is just to arrange | position to a position.

<Effect of Embodiment 3>
The silo temperature measuring cable with dropout alarm of the present embodiment has a lead wire winding portion that winds the lead wire in the vicinity of the lead wire connecting portion, so that the lead wire connecting portion follows the extension of the resin cover. It becomes possible. This makes it possible to lengthen the use period of the silo temperature measuring cable with a drop alarm and to issue an alarm before the tip of the resin cover drops into the silo.

0101 Silo temperature measurement cable with dropout alarm 0102 Silo 0103 Resin cover 0104 Resin cover tip 0105 Lead wire connection part 0106 Reporting part 0201 Resin cover 0202 Lead wire connection part 0301 Resin cover 0302 Lead wire 0303 Lead wire connection part 0304 Lead end of resin cover 0401 Lead wire connecting portion 0402 Drop prevention collar 0403 Resin cover 0404 Lead end of resin cover 0501 Lead wire connecting portion 0502 Lead wire 0503 Lead wire winding portion 0504 Resin cover

Claims (3)

In the silo temperature measuring cable that hangs down in the silo and measures the temperature of the storage in the silo,
A temperature measuring terminal, a cable connected to the temperature measuring terminal, and a resin cover that covers the lead wire;
The lead wire is connected to a lead wire connecting portion that follows the tip of the resin cover when the resin cover is extended,
When the lead wire connection part is detached from the lead wire, an alarm part that issues an alarm; and
Silo temperature measuring cable with dropout alarm.     The silo temperature measuring cable with a dropout alarm according to claim 1, wherein the lead wire connecting portion has a dropout prevention collar portion so as not to drop off from the tip of the resin cover. The silo temperature measuring cable with a dropout alarm according to claim 1 or 2, further comprising a lead wire winding portion for winding the lead wire in the vicinity of the lead wire connecting portion.