JP6512358B1 - Temperature measurement apparatus and method of manufacturing temperature measurement apparatus - Google Patents

Abstract

An object such as impact, tensile force, and bending from coal or the like to be introduced into a silo without providing a resin coating causing a limit in heat resistance and an outer protective layer of a linear / strip metal member causing cost increase The present invention provides a temperature measuring device suitable for internal temperature management of various silos, which can prevent disconnection of a temperature measuring sensor due to load and can obtain heat resistance with a simple structure while suppressing manufacturing costs. SOLUTION: A long sheath type temperature measurement sensor 2 in which a temperature measurement unit 21 is provided at a predetermined position inside a long metal sheath 20, and the sheath type temperature measurement sensor 2 on an outer peripheral surface 30 in an axial direction And an elongated support member 3 supporting the sheathed temperature measurement sensor 2. [Selected figure] Figure 1

Description

  The present invention is a temperature measuring device suitably used in all applications where load such as tensile force is expected to be applied to temperature measuring sensors, such as internal temperature control of various silos (storage containers) of steelworks and power plants, It relates to the manufacturing method.

  As a temperature measurement device for silos, conventionally, a lead wire having a temperature measurement sensor such as a resistance temperature detector or the like is provided around a wire rope, a polymer coating is applied on the outer periphery, and the upper portion of the wire rope is suspended A hook is proposed for use in the field (see, for example, Patent Document 1). However, in such a temperature measuring device, there is a possibility that the low temperature measuring sensor may be easily cut off due to impact such as coal or biomass to be input, large load at the time of dropping, bending of the whole, and the like.

  On the other hand, there is also proposed a structure for preventing the impact of introduced coal or the like by weaving a linear or band-like metal material on the outer side (Patent Document 2). As a result, the strength is reinforced, and cutting of the thermocouple due to impact or tensile force can be prevented. However, there is a problem that the structure becomes complicated and the manufacturing cost becomes high, and the problem of being weak to bending remains.

  In addition, a resin-coated thermocouple is covered with a flexible tube, which is used as a core, and a wire rope is wound around the core to be reinforced (Patent Document 3). Such a temperature measuring device can prevent the impact from coal etc. without providing the expensive metal material on the outside, and when loaded, the entire cable including the wire rope will receive force, Overall strength is improved. In addition, it is also possible to prevent a load from being generated in the thermocouple at the time of bending and disconnection. However, since the thermocouple is installed in the core, when tensile force is generated in the axial direction, the distribution of the force to the thermocouple becomes larger than that of the surrounding wire rope. Further, when a load is applied to the cable, the thermocouple is also subjected to a shearing force from the wire rope wound around, and as a result, the thermocouple may be disconnected.

  Moreover, since the resin coating (tube) is essential in any of the above-mentioned conventional proposals, there is also a problem that there is a limit to the response of temperature measurement and heat resistance.

JP-A-63-206617 JP, 2009-68954, A Japanese Utility Model Application Publication No. 58-7899

  Therefore, in view of the above-described situation, the present invention intends to solve the problem by not providing a resin coating which limits the response and heat resistance and an outer protective layer of the linear / strip metal material which causes a cost increase. Internal temperature control of various silos where heat resistance can be obtained with simple structure, which can prevent breakage of temperature measuring sensor by load such as impact, tensile force and bending from coal etc. which is thrown into silo, and with simple structure. To provide a suitable temperature measurement device.

The present invention includes the following inventions.
(1) A long sheath type temperature measurement sensor in which a temperature measurement unit is provided at a predetermined position inside a long metal sheath, and the sheath type temperature measurement sensor spirally along the axial direction on the outer peripheral surface What is claimed is: 1. A temperature measuring device comprising: an elongated supporting member which is wound and supports the sheathed temperature measuring sensor.

  (2) As the sheath type temperature measurement sensor, a plurality of sheath type temperature measurement sensors provided with a temperature measurement unit at the tip of the metal sheath are provided, and the plurality of sheath type temperature measurement sensors are the tip of each sensor The temperature measurement device according to (1), wherein each of the support members is wound on the outer peripheral surface of the support member such that the positions of the two axial positions are different from each other on the outer peripheral surface of the support member.

  (3) A plurality of the sheath type temperature measurement sensors are provided, and the plurality of sheath type temperature measurement sensors are wound around the outer peripheral surface of the support member in a state of being in close contact with each other, The temperature measurement device according to 1) or (2).

  (4) The temperature measurement device according to any one of (1) to (3), wherein the support member is a rope obtained by twisting a plurality of strands.

  (5) The sheathed temperature measurement sensor is spirally wound along the concave line in a state of being fitted in the concave line between the strands forming the outer surface of the support member ((5) 4) The temperature measuring device described.

  (6) The temperature measurement device according to (5), wherein the sheath type temperature measurement sensor is provided in a state of being contained in the area inside the circumscribed circle of the support member in the concave in a cross sectional view.

  (7) The temperature measurement device according to any one of (4) to (6), in which the sheathed temperature measurement sensor is wound in a twisted state with the strands constituting the support member.

  (8) The temperature measurement device according to any one of (1) to (7), wherein the support member is formed of at least one of a wire made of a metal wire and a high-strength nonmetal fiber.

  (9) A plurality of the sheath-type temperature measurement sensors are provided, and the plurality of sheath-type temperature measurement sensors are configured such that the outer surface of the metal sheath is colored in different colors or different patterns and distinguishable from each other ( The temperature measurement device according to any one of 1) to (8).

  (10) A long sheath type temperature measurement sensor in which a temperature measurement unit is provided at a predetermined position inside a long metal sheath, and the sheath type temperature measurement sensor spirally along the axial direction on the outer peripheral surface What is claimed is: 1. A manufacturing method of a temperature measuring device comprising: a long supporting member wound around and supporting the sheath type temperature measuring sensor; and a sheath type cable before the temperature measuring portion is formed; After being wound on the outer peripheral surface of the support member, the distal end side portion of the sheathed cable is removed from the outer peripheral surface of the support member, and after processing to form a temperature measurement portion on the corresponding portion, A method of manufacturing a temperature measuring device, comprising rewound on the outer peripheral surface of

  (11) The method of manufacturing a temperature measurement device according to (10), wherein a plurality of sheath type temperature measurement sensors in which a temperature measurement unit is provided at a tip end of a metal sheath as the sheath type temperature measurement sensor are provided. After a plurality of mold cables are wound on the outer peripheral surface of the support member, distal end portions of different lengths of each sheathed cable are removed from the outer peripheral surface of the support member, respectively, After processing to form a temperature measurement unit, each of them is rewound on the outer peripheral surface of the support member again, whereby a plurality of sheath type temperature measurement sensors can detect the position of the tip of each sensor as the support member. A manufacturing method of a temperature measurement device, wherein the outer peripheral surface of the support member is wound on the outer peripheral surface of the support member so as to be at different axial positions on the outer peripheral surface of the support member.

  (12) The method for manufacturing a temperature measuring device according to (10) or (11), wherein a plurality of the sheath type temperature measuring sensors are provided, wherein a plurality of the sheath type cables are provided on the outer peripheral surface of the support member. The manufacturing method of the temperature measuring device which is wound by being twisted together in the state which closely_contact | adhered.

  (13) The support member is a rope obtained by twisting a plurality of strands, and the sheathed temperature measurement sensor is fitted in the groove between the strands forming the outer surface of the support. A method of manufacturing a temperature measuring device according to (10) or (11), wherein the sheathed cable is twisted together with the strands constituting the support member. The manufacturing method of the temperature measurement apparatus which is wound on the outer peripheral surface of the said supporting member by uniting.

  According to the temperature measurement device of the present invention, since the sheath-type temperature measurement sensor made of a long metal sheath is spirally wound on the outer peripheral surface of the long support member, the metal sheath has a temperature While protecting the measurement sensor from the impact of coal etc., even if a tensile force is generated in the longitudinal direction, the spiral sensor side extends more easily than the center side support member, and the temperature measurement sensor is stressed. Can be avoided, and disconnection of the sensor can be prevented.

  Also, since it is similarly wound in a spiral, the temperature measurement sensor is protected by a strong metal sheath while following the entire apparatus when it is bent without causing local stress, and the temperature measurement sensor is caused by the bending. It is also possible to prevent disconnection.

  In addition, the temperature measuring device according to the present invention measures the temperature when a load such as impact, tensile force, or bending occurs as described above, without providing an outer protective layer such as a resin coating or a linear / strip metal material. Since disconnection of the sensor can be prevented, it is possible to have excellent responsiveness and heat resistance (for example, heat resistance to withstand use in a high temperature range of about 300 ° C. to 400 ° C.), and A simple structure makes it possible to reduce the manufacturing cost.

  In addition, a plurality of sheath type temperature measurement sensors provided with a temperature measurement unit at the tip end of the metal sheath are provided, and in the plurality of sheath type temperature measurement sensors, the position of the tip of each sensor is the outer peripheral surface of the support member When each is wound on the outer peripheral surface of the support member so as to be at different axial positions on each other, the temperature measurement sensors may only be wound around the support member so as to intersect each other. A temperature measurement sensor which can be disposed on the outer peripheral surface of the support member without any trouble and which can control the temperature at different axial positions can be provided efficiently and with stable quality.

  Further, in the case where a plurality of the sheath type temperature measurement sensors are provided, and the plurality of sheath type temperature measurement sensors are wound around the outer peripheral surface of the support member in close contact with each other, By supporting each other, each temperature measurement sensor will be held in a stable state on the support member, for example, even if it receives impact and tensile force from coal etc. fed when used for temperature control in the silo. Excessive stress on each temperature measurement sensor can be avoided, and disconnection of the sensor can be more reliably prevented.

  In addition, the support member is a rope obtained by twisting a plurality of strands, and a sheath-type temperature measurement sensor is fitted in a recess between the strands forming the outer surface of the support. Even in the case of spirally wound along the groove, each temperature measurement sensor is held in a stable state inside the groove on the support member, for example, for temperature control in the silo. It is avoided that each temperature measurement sensor is subjected to an excessive stress even if it receives impact or tensile force from coal or the like which is fed when used, and the disconnection of the sensor can be prevented more reliably. In particular, in the case where the sheath type temperature measurement sensor is provided in a state where it is contained in the area inside the circumscribed circle of the support member in the concave line in cross section, the temperature measurement sensor itself is the impact or tensile force itself Can be less likely to be received, and disconnection of the sensor can be prevented more reliably.

  In addition, in the case where the sheath type temperature measurement sensor is wound in a twisted state with the strands constituting the support member, the temperature measurement sensor is held on the support member in a more stable state. It is possible to prevent the stress on the temperature measurement sensor from being applied excessively even when receiving the impact or the tensile force, and the disconnection of the sensor can be prevented more reliably. In addition, since the temperature measurement sensor is disposed on the support member simultaneously with the manufacture of the support member, the manufacturing can be significantly streamlined and the manufacturing cost can be significantly reduced.

  Further, in the case where a plurality of the sheath type temperature measurement sensors are provided, and the plurality of sheath type temperature measurement sensors are configured such that coloring of different colors or different patterns are given on the outer surface of the metal sheath The combination of the measuring instrument and the terminal on the proximal side to be connected to the measuring instrument can be easily determined, thereby improving the workability and preventing the wiring error.

  In the method of manufacturing these temperature measurement devices, the sheath type cable before the temperature measurement portion is formed is wound on the outer peripheral surface of the support member, and then the distal end side portion of the sheath type cable Is removed from the outer peripheral surface of the support member, and after processing to form a temperature measurement portion at the relevant portion, the temperature is measured from the beginning according to the manufacturing method to be rewound on the outer peripheral surface of the support member again. As compared with the case where the temperature measurement sensor in which the portion is formed is wound around the support member, the winding process can be performed reliably and efficiently easily, the manufacturing cost can be reduced, and the quality is stabilized.

Explanatory drawing which shows the temperature measurement apparatus concerning representative embodiment (1st Embodiment) of this invention. Explanatory drawing which similarly shows the sheath type temperature measurement sensor which comprises a temperature measurement apparatus. Explanatory drawing which similarly shows the principal part of a temperature measurement apparatus. The whole block diagram which similarly shows a temperature measurement apparatus. Explanatory drawing which similarly shows the manufacturing method of a temperature measurement apparatus. Explanatory drawing which similarly shows a manufacturing method. Explanatory drawing which shows the temperature measurement apparatus concerning other embodiment (2nd Embodiment) of this invention. Explanatory drawing which similarly shows the principal part of a temperature measurement apparatus. Sectional drawing which similarly shows a temperature measurement apparatus.

  Next, an embodiment of the present invention will be described in detail with reference to the attached drawings.

  The temperature measurement device 1 according to a representative embodiment (first embodiment) of the present invention has a long sheath type temperature measurement sensor 2 and a sheath type temperature measurement sensor 2 as shown in FIGS. 1 to 3. It comprises a long support member 3 spirally wound on the surface 30 along the axial direction and supporting the sheath type temperature measurement sensor 2 and, for example, the inside of various silos of a steel mill or a power plant. And is used to control the temperature in the silo by the temperature measurement sensor 2.

  The support member 3 is a long member made of a metal wire rod, a steel bar, a wire rope or the like for supporting the load of the temperature measurement sensor 2 and having a sufficient tensile strength. The cross-sectional shape is not particularly limited. Other than metal, it may be made of other materials such as high strength non-metallic fibers.

  The base end side of the support member 3 is provided with an attachment portion 4 folded back in a loop and crimped with a metal pipe 40, and is attached to the suspension portion of the silo upper portion (not shown). The side is supported with the inside of the silo. The temperature measurement sensor 2 is spirally wound on the outer peripheral surface of the support member 3 suspended in the silo in this manner, and is thus suspended and supported in the silo via the support member 3 as well.

  The temperature measurement sensor 2 is provided with a temperature measurement unit 21 at a predetermined position inside a long metal sheath 20. In this example, a pair of thermocouple wires 22 is provided inside the metal sheath 20, A hot junction in which a thermocouple wire is connected as a temperature measurement unit 21 is provided at the tip end portion, and a sheath thermocouple in which an inorganic insulating powder 23 such as magnesia (MgO) or the like is filled in an internal gap is provided. It may be a sheath thermocouple provided with two or more pairs of thermocouple wires. Moreover, it is not limited to such a sheath thermocouple at all, and a sheath temperature measuring resistor or another temperature measuring sensor may be used.

  Since the metal sheath 20 of the temperature measurement sensor 2 has heat resistance, when the support member 3 is a metal material such as a steel wire, a plated steel wire, or a stainless steel wire, it can be used even in a temperature atmosphere exceeding 300.degree. it can. In addition, when the support member 3 is a stainless steel wire or a high strength nonmetal wire such as carbon fiber or aramid fiber and the metal sheath 20 is made of stainless steel, it has excellent corrosion resistance and is used in a corrosive atmosphere. It can be possible.

  In the present embodiment, the plurality of (six) sheathed type temperature measurement sensors 2 are wound around the outer peripheral surface of the support member 3 in a state of being in close contact with each other. The plurality of sheath type temperature measurement sensors are respectively wound on the outer peripheral surface of the support member 3 so that the positions of the tips of the respective sensors become different axial positions on the outer peripheral surface of the support member 3. As a result, the positions of the temperature measurement units 21 of the respective sensors are also arranged at mutually different positions in the axial direction, and are configured to be able to measure the temperatures at different height positions (six places) in the silo.

  The sheathed temperature measurement sensor 2 wound on the outer peripheral surface of the support member 3 is fixed on the outer peripheral surface of the support member 3 by sheathing 5 in place so as to maintain the state of being wound around without scattering. Although the sheathing 5 is a stainless steel thin metal wire for tying and fixing the temperature measurement sensor 2 on the outer peripheral surface of the support member 3, it may be a clip or the like. It is also possible to fix with a heat resistant adhesive or the like.

  FIG. 4 is an entire configuration diagram of the temperature measurement sensor 2. The proximal end side of the sheathed temperature measurement sensor 2 extending from the proximal end side of the support member 3 is connected and connected to a lead wire 24 connected to a measuring instrument (not shown). Here, it is preferable that the metal sheath outer surfaces of the plurality of sheathed temperature measurement sensors are colored differently or colored differently. As a result, the combination of the measuring instrument and the terminal 25 on the base end side connected to the measuring instrument can be easily determined, and the workability can be improved and wiring errors can be prevented.

  Next, the manufacturing procedure of the temperature measurement device 1 according to the present embodiment will be described based on FIGS. 5 and 6.

  First, as shown in (a) of FIG. 5, the thermocouple wire 22 is internally provided inside the metal sheath 20 before the temperature measurement portion is formed on the outer peripheral surface of the support member 3, and inorganics are formed in the gaps. A plurality of (six in this example) sheathed cables 6 filled with the insulating powder 23 are wound on the outer peripheral surface of the support member 3. The sheathed cable 6 is wound on the outer peripheral surface of the support member 3 by being twisted in close contact with each other.

  Preferably, a sheathing 5 is provided at the end of the sheathed cable so that the wound sheathed cable 6 does not disperse. Then, the length necessary for the temperature measurement device is cut out.

  Next, as shown in (b) to (g) of FIG. 5, the distal end side portion of the sheathed cable 6 is sequentially peeled off from the outer peripheral surface of the support member 3 to form a temperature measurement portion on the portion Then, the work of re-wrapping on the outer peripheral surface of the support member 3 and fixing with the sheathing 5 is performed again. That is, the front end side portion is peeled off by a length necessary for processing of the temperature measurement unit, and after processing, it is rewound. Thus, the sheath type temperature measurement sensor 2 is configured.

  The temperature measurement unit is peeled off in order from the one located on the proximal end side of the support member 3, the temperature measurement unit is processed and rewound, and the temperature measurement sensor 2 processed in sequence from the proximal end It will be fixed. Thereby, finally, as shown in (h) of FIG. 5, the plurality of (six) sheath type temperature measurement sensors 2 have different axes on the outer peripheral surface of the support member 3 at the positions of the tips of the respective sensors. It is configured to be wound on the outer peripheral surface of the support member 3 so as to be in the direction position.

  The processing of the above-mentioned temperature measurement part of each sheathed cable 6 is, as shown in FIG. 6, first of all, as shown in (a) to (b) of FIG. Then, as shown in (c) to (d) of FIG. More specifically, the distal end side portion of the sheathed cable 6 which is tipped is held by the processing supporting jig 7 with the opening facing upward, and in this state, the inorganic insulating powder 23 is removed, the wire The temperature measurement unit 21 is formed at the tip end portion by the procedure of hot junction processing in the manufacture of a known sheath thermocouple, such as wire connection, welding and sealing.

  The temperature measurement sensor 2 in which the temperature measurement unit 21 is formed is rewound on the outer peripheral surface of the support member 3 as shown in FIGS. 6 (e) to 6 (f) and fixed by the sheathing 5 so as not to scatter. Be done.

  As described above, after the sheathed cable 6 is wound around the support member 3, the temperature measurement sensor 2 of the present embodiment processes the temperature measurement unit 21 at the tip while unwinding one by one and adjusting the length, Although the temperature measurement sensor 2 is manufactured after being rewound, the temperature measurement device of the present invention is not limited to such a device, and the temperature measurement portion is previously processed at the tip portion, and the lengths are different. A plurality of temperature measurement sensors may be prepared and spirally wound on the outer peripheral surface of the support member 3.

  Next, another embodiment (second embodiment) of the present invention will be described based on FIGS. 7 to 9.

  In the present embodiment, the support member 3 is a wire rope obtained by twisting a plurality of wire strands 31, 33, 34, and the sheath type temperature measurement sensor 2 forms the outer surface of the support member 3 It is spirally wound along the concave 32 in a state of being fitted in the concave 32 between 31.

  More specifically, as shown in FIG. 9, the sheath type temperature measurement sensor 2 is provided in a state of being accommodated in the area inside the circumscribed circle 35 of the support member 3 in the concave stripe 32 in cross sectional view The sensor 2 is less susceptible to impact or tensile force from coal or the like which is introduced into the silo, and is configured to be able to prevent disconnection more reliably.

  In this example, nine temperature measurement sensors 2 are wound in order to measure the internal temperature at nine height positions in the silo. Therefore, the temperature measurement sensors 2 are mounted on the outer peripheral surface 30 of the support member 3. 9 or more (in the present example, the same number, nine) are formed in the spiral groove 32 for fitting. The number of concaves 32 is determined by the number of outermost wire strands 31 forming the outer surface of the support member 3.

  Therefore, according to the number of temperature measurement sensors 2, the number of strands in the outermost layer of the support member 3 is determined to be a larger number. It is preferable that the wire strands (31, 33, 34) constituting the supporting member 3 and the temperature measurement sensor (sheath type cable) be simultaneously twisted and manufactured. In this case, in terms of balance, it is preferable to match the number of outermost wire wires with the number of temperature measurement sensors.

  The other structure, the manufacturing procedure, the modified examples thereof, and the like are the same as those of the above-described representative embodiment (the first embodiment), and therefore the same reference numerals are given to the same structure, and the description thereof is omitted.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these examples, and it is needless to say that the present invention can be practiced in various forms without departing from the scope of the present invention.

Reference Signs List 1 temperature measurement device 2 temperature measurement sensor 3 support member 4 attachment portion 5 sheathing 6 sheathed cable 7 support jig 20 metal sheath 21 temperature measurement portion 22 thermocouple wire 23 inorganic insulating powder 24 lead wire 25 terminal 30 outer circumferential surface 31 Wire wire 32 Concave line 35 Circumscribed circle 40 Metal pipe

Claims (8)

A long sheath type temperature measurement sensor in which a temperature measurement unit is provided at a predetermined position inside a long metal sheath;
The sheath type temperature measuring sensor on the outer peripheral surface is wrapped helically in the axial direction, Ri Na more an elongate support member for supporting the sheath type temperature measuring sensor,
The support member is a rope obtained by twisting a plurality of strands, and the sheathed temperature measurement sensor is fitted in a recess between the strands forming the outer surface of the support member. , Spirally wound along the recess,
The temperature measuring device is characterized in that the sheath type temperature measurement sensor is held in a state of being contained in the area inside the circumscribed circle of the support member in the concave streak in a cross sectional view . As the sheath type temperature measurement sensor, a plurality of sheath type temperature measurement sensors provided with a temperature measurement unit at the tip of a metal sheath are provided.
The plurality of sheath type temperature measurement sensors are respectively wound on the outer peripheral surface of the support member so that the positions of the tip of each sensor are at different axial positions on the outer peripheral surface of the support member. Yes,
The temperature measurement device according to claim 1. The temperature measurement device according to claim 1 or 2 , wherein the sheathed temperature measurement sensor is wound in a twisted state together with the strands constituting the support member. The temperature measurement device according to any one of claims 1 to 3 , wherein the support member is formed of at least one of a metal wire and a wire made of a high-strength nonmetal fiber. A plurality of the sheath type temperature measurement sensors are provided,
The plurality of sheath type temperature measurement sensors are configured such that the outer surface of the metal sheath is colored in different colors or different patterns so as to be distinguishable from each other.
The temperature measurement device according to any one of claims 1 to 4 . It is a manufacturing method of the temperature measurement device according to any one of claims 1 to 5 ,
After winding the sheathed cable before the temperature measurement unit is formed on the outer peripheral surface of the support member,
Removing the distal end portion of the sheathed cable from the outer peripheral surface of the support member;
After processing to form a temperature measurement unit at the relevant site,
Re-wrap on the outer peripheral surface of the support member again,
A method of manufacturing a temperature measuring device characterized in that. The method of manufacturing a temperature measurement device according to claim 6, wherein a plurality of sheath type temperature measurement sensors provided with a temperature measurement unit at a tip end of a metal sheath are provided as the sheath type temperature measurement sensor,
After winding a plurality of the sheathed cables on the outer peripheral surface of the support member,
Removing distal end portions of different lengths of each sheathed cable from the outer peripheral surface of the support member;
After processing to form a temperature measurement unit on the respective portions,
Re-wound on the outer peripheral surface of the support member again, respectively
Thereby, a plurality of sheath type temperature measurement sensors are wound on the outer peripheral surface of the support member such that the positions of the tips of the respective sensors become different axial positions on the outer peripheral surface of the support member. Method of manufacturing temperature measuring device. A method of manufacturing a temperature measurement device 請 Motomeko 6 or 7, wherein,
A manufacturing method of a temperature measurement device which makes it wind on the peripheral face of the supporting member by twisting together the sheath type cable with a strand which constitutes the supporting member.

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