Temperature measuring device

Abstract

To provide a temperature measuring device that has high measurement accuracy and is easy to install.SOLUTION: Provided is a temperature measuring device comprising a thermometer, a first clamping member, a second clamping member, a first enclosure, and a second enclosure. The first clamping member and the second clamping member sandwich a tube for flowing a fluid and the thermometer, and the first enclosure and the second enclosure sandwich the tube and thereby form a heat-insulating space around the tube that faces the first clamping member and the second clamping member. Thus, by measuring, with the thermometer, the surface temperature of the tube in a section enclosed by the first enclosure and the second enclosure, the temperature measuring device measures the temperature of the fluid in the tube.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a temperature measurement device. [Background technology]

[0002] BACKGROUND ART Temperature measuring devices are known that measure the temperature of a fluid inside a pipe by measuring the temperature of the surface of the pipe with a thermometer (see, for example, Patent Documents 1 to 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4584388 [Patent Document 2] Patent No. 4537776 [Patent Document 3] Patent No. 6835856 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present disclosure is to provide a temperature measuring device that has high measurement accuracy and is easy to install. [Means for solving the problem]

[0005] One aspect of the present disclosure is as follows.

[0006] [1] a thermometer, a first clamping member, a second clamping member, a first enclosure, and a second enclosure; the first clamping member and the second clamping member clamp a pipe through which a fluid flows and the thermometer; the first surrounding body and the second surrounding body sandwich the pipe to form a heat insulating space facing the first clamping member and the second clamping member around the pipe; a temperature measuring device for measuring the temperature of the fluid in the pipe by measuring the temperature of the surface of the pipe in the portion surrounded by the first and second enclosures with the thermometer;

[0007] [2] The temperature measuring device according to [1], having a pressing part that presses the temperature measuring part of the thermometer toward the surface of the pipe.

[0008] [3] the first clamping member has a first main clamping portion and a first sub-clamping portion integrally provided with the first main clamping portion, the second clamping member has a second main clamping portion and a second sub-clamping portion integrally provided with the second main clamping portion, The pressing portion is composed of a first sub-clamping portion and a second sub-clamping portion, The temperature measuring device described in [2], wherein the first sub-clamping portion and the second sub-clamping portion clamp the pipe and the thermometer using the first main clamping portion and the second main clamping portion, thereby clamping the pipe and the temperature measuring portion of the thermometer.

[0009] [4] The temperature measuring device according to any one of [1] to [3], wherein the first clamping member and the second clamping member clamp the tube and the thermometer with the first clamping member being integrally provided on the first enclosure.

[0010] [5] The temperature measuring device according to any one of [1] to [4], wherein the first clamping member and the second clamping member clamp the tube and the thermometer with the thermometer being integrally provided in the first enclosure.

[0011] [6] The temperature measuring device according to any one of [1] to [5], further comprising a thermal conductor that fills a gap between the surface of the pipe and the temperature measuring part of the thermometer.

[0012] [7] The temperature measuring device according to [6], wherein the first clamping member and the second clamping member clamp the tube and the thermometer with the thermal conductor being integrally provided in the first enclosure.

[0013] [8] The temperature measuring device according to any one of [1] to [7], further comprising a reference thermometer for measuring the temperature outside the tube.

[0014] [9] The temperature measuring device according to [8], wherein the reference thermometer measures the temperature inside the outer surface of a container consisting of the first enclosure and the second enclosure.

[0015]

[10] The temperature measuring device according to [9], wherein the reference thermometer measures the temperature of the first enclosure, the second enclosure, or the insulated space.

[0016]

[11] The temperature measuring device according to any one of [8] to

[10] , wherein the first clamping member and the second clamping member clamp the tube and the thermometer with the reference thermometer being integrally provided in the first enclosure.

[0017]

[12] The temperature measuring device according to any one of [1] to

[11] , wherein the heat insulating space is a space in which no object is placed or a space in which a heat insulating material is placed.

[0018]

[13] A temperature measuring device described in any one of [1] to

[12] , wherein the temperature measuring part of the thermometer is positioned within a container consisting of the first enclosure and the second enclosure, biased toward the downstream side of the fluid in the pipe in the longitudinal direction of the pipe. [Effects of the Invention]

[0019] According to the present disclosure, it is possible to provide a temperature measuring device that has high measurement accuracy and is easy to install. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view showing a temperature measuring device according to a first embodiment of the present disclosure. [Figure 2] 2 is a perspective view showing the temperature measuring device shown in FIG. 1 from another angle with the second enclosure omitted. FIG. [Figure 3] FIG. 10 is a perspective view showing a temperature measuring device according to a second embodiment of the present disclosure, with the second enclosure omitted. [Figure 4] FIG. 10 is a perspective view showing a temperature measuring device according to a third embodiment of the present disclosure, with the second enclosure omitted. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

[0022] As shown in Figures 1 and 2, the temperature measuring device 1 according to the first embodiment of the present disclosure comprises a thermometer 2, a first clamping member 3, a second clamping member 4, a first enclosure 5, and a second enclosure 6. The first clamping member 3 and the second clamping member 4 clamp a tube 7 through which a fluid (see the thick arrows in Figures 1 and 2) flows and the thermometer 2 in a first direction D1. The first enclosure 5 and the second enclosure 6 clamp the tube 7 in a second direction D2 (see the hollow arrows in Figure 1), thereby forming an insulating space S facing the first clamping member 3 and the second clamping member 4 around the tube 7. The temperature of the surface (outer surface) of the tube 7 in the portion surrounded by the first enclosure 5 and the second enclosure 6 is measured by the thermometer 2, thereby measuring the temperature of the fluid in the tube 7.

[0023] According to the above configuration, the thermometer 2 can be maintained along the surface of the pipe 7 to measure the surface temperature of the pipe 7 by the first clamping member 3 and the second clamping member 4, and the thermal insulation space S formed by the first enclosure 5 and the second enclosure 6 can suppress the influence of the external environment on the surface temperature of the pipe 7. Therefore, the temperature of the fluid in the pipe 7 can be measured with high accuracy (reproducibility). Furthermore, the temperature measuring device 1 can be installed by simply clamping the pipe 7 and thermometer 2 between the first clamping member 3 and the second clamping member 4, and then clamping the pipe 7 between the first enclosure 5 and the second enclosure 6. The thermometer 2 is, for example, a resistance thermometer (e.g., a platinum resistance thermometer) or a thermocouple. The thermal insulation space S is a space in which no object is placed (e.g., a space filled with air) or a space in which a thermal insulation material (not shown) is placed.

[0024] The fluid is not particularly limited, but in this embodiment, it is a liquid. The fluid is, for example, a corrosive fluid, such as a chemical. The temperature measuring device 1 of this embodiment, which measures the temperature of the fluid without contact with the liquid, is particularly suitable for cases where the fluid is corrosive.

[0025] In this embodiment, the first direction D1 is a direction perpendicular to the tube 7 extending linearly within the temperature measuring device 1, but is not limited to this. Also, in this embodiment, the first direction D1 is a horizontal direction, but is not limited to this. In this embodiment, the second direction D2 is a direction perpendicular to the first direction D1, but is not limited to this. Also, in this embodiment, the second direction D2 is a vertical direction, but is not limited to this. In this embodiment, the second direction D2 is a direction different from the first direction D1, but is not limited to this.

[0026] The temperature measuring device 1 has a pressing unit 8 that presses the temperature measuring unit 2a of the thermometer 2 toward the surface of the pipe 7. According to the above configuration, the pressing unit 8 makes it easier for the temperature of the surface of the pipe 7 to be transmitted to the temperature measuring unit 2a of the thermometer 2, thereby improving measurement accuracy.

[0027] In this embodiment, the pressing portion 8 is an elastic annular member 9 that surrounds and clamps the pipe 7 and the temperature measuring portion 2a of the thermometer 2, but is not limited to this. For example, as in a second embodiment shown in Fig. 3 , the first clamping member 3 may have a first main clamping portion 3a and a first sub-clamping portion 3b integrally formed with the first main clamping portion 3a, the second clamping member 4 may have a second main clamping portion 4a and a second sub-clamping portion 4b integrally formed with the second main clamping portion 4a, and the pressing portion 8 may be formed by the first sub-clamping portion 3b and the second sub-clamping portion 4b, and the first sub-clamping portion 3b and the second sub-clamping portion 4b may clamp the pipe 7 and the temperature measuring portion 2a of the thermometer 2 by clamping the pipe 7 and the thermometer 2 between the first main clamping portion 3a and the second main clamping portion 4a. According to the above configuration, the pipe 7 and thermometer 2 can be simply clamped between the first main clamping portion 3a and the second main clamping portion 4a, and the temperature measuring portion 2a of the thermometer 2 can be pressed toward the surface of the pipe 7 by the first sub-clamping portion 3b and the second sub-clamping portion 4b as the pressing portion 8, thereby improving ease of installation.

[0028] In this embodiment, the first sub-clamping portion 3b is formed integrally with the first main clamping portion 3a, but this is not limiting and the first sub-clamping portion 3b may be integrally connected to the first main clamping portion 3a. Also, in this embodiment, the second sub-clamping portion 4b is formed integrally with the second main clamping portion 4a, but this is not limiting and the second sub-clamping portion 4b may be integrally connected to the second main clamping portion 4a.

[0029] The first sub-clamping portion 3b has a first arm portion 3b1 that protrudes from the first main clamping portion 3a in the longitudinal direction of the pipe 7, and a first protrusion portion 3b2 that protrudes from the tip of the first arm portion 3b1 in the first direction D1 toward the pipe 7 and presses the temperature measuring portion 2a of the thermometer 2 against the surface of the pipe 7. The second sub-clamping portion 4b has a second arm portion 4b1 that protrudes from the second main clamping portion 4a in the longitudinal direction of the pipe 7, and a second protrusion portion 4b2 that protrudes from the tip of the second arm portion 4b1 in the first direction D1 toward the pipe 7 and presses the surface of the pipe 7.

[0030] In this embodiment, the first sub-clamping portion 3b and the second sub-clamping portion 4b (pressing portion 8) are located upstream of the first main clamping portion 3a and the second main clamping portion 4a in the longitudinal direction of the pipe 7. According to the above configuration, even if the clamping by the first main clamping portion 3a and the second main clamping portion 4a affects the flow of the fluid in the pipe 7, the effect on the flow of the fluid near the temperature measuring portion 2a of the thermometer 2 can be suppressed, thereby further improving the measurement accuracy.

[0031] The second embodiment may also be configured to add a first plate member 3c and a second plate member 4c, as in the third embodiment shown in Fig. 4. In the third embodiment, the first clamping member 3 includes a first plate member 3c having a first leaf spring portion 3c1, which has a plate shape perpendicular to the first direction D1, is held by the first main clamping portion 3a, and presses the first sub-clamping portion 3b toward the surface of the pipe 7 in the first direction D1, and the second clamping member 4 includes a second plate member 4c having a second leaf spring portion 4c1, which has a plate shape perpendicular to the first direction D1, is held by the second main clamping portion 4a, and presses the second sub-clamping portion 4b toward the surface of the pipe 7 in the first direction D1.

[0032] Although not shown, the temperature measuring device 1 may be configured not to have the pressing portion 8. For example, the first clamping member 3 may have a first main clamping portion 3a but not a first sub-clamping portion 3b, and the second clamping member 4 may have a second main clamping portion 4a but not a second sub-clamping portion 4b.

[0033] The first clamping member 3 and the second clamping member 4 clamp the tube 7 and the thermometer 2 with the first clamping member 3 being integrally provided on the first enclosure 5. The above configuration eliminates the need to attach the first clamping member 3 to the first enclosure 5 during installation, further improving ease of installation.

[0034] The first clamping member 3 and the second clamping member 4 clamp the tube 7 and the thermometer 2 with the thermometer 2 being integrally provided in the first enclosure 5. The above configuration eliminates the need to attach the thermometer 2 to the first enclosure 5 during installation, further improving ease of installation.

[0035] The temperature measuring device 1 has a thermal conductor 10 that fills the gap between the surface of the pipe 7 and the temperature measuring part 2a of the thermometer 2. According to the above configuration, the thermal conductor 10 makes it easier for the temperature of the surface of the pipe 7 to be transferred to the temperature measuring part 2a of the thermometer 2, thereby improving measurement accuracy.

[0036] The first clamping member 3 and the second clamping member 4 sandwich the pipe 7 and the thermometer 2 with the thermal conductor 10 being integrally provided on the first enclosure 5. The above configuration eliminates the need to attach the thermal conductor 10 to the first enclosure 5 during installation, further improving ease of installation.

[0037] The temperature measuring device 1 has a reference thermometer 11 that measures the temperature outside the pipe 7. With the above configuration, the temperature of the fluid inside the pipe 7 can be measured using the temperature gradient between the value measured by the reference thermometer 11 and the value measured by the thermometer 2, thereby further improving the measurement accuracy. The reference thermometer 11 is, for example, a resistance thermometer (e.g., a platinum resistance thermometer) or a thermocouple.

[0038] The reference thermometer 11 measures the temperature inside the outer surface of the container 12 consisting of the first enclosure 5 and the second enclosure 6. With the above configuration, the influence of the external environment on the measurement value by the reference thermometer 11 can be suppressed, thereby further improving the measurement accuracy.

[0039] The reference thermometer 11 measures the temperature of the first enclosure 5, the second enclosure 6, or the insulating space S (the insulating space S in this embodiment). In this embodiment, the reference temperature measuring unit 11a of the reference thermometer 11 is arranged to face the insulating space S and measures the temperature of the insulating space S, but this is not limiting. For example, the reference thermometer 11a may be configured to be embedded in the first enclosure 5 and measure the temperature of the first enclosure 5, or may be configured to be embedded in the second enclosure 6 and measure the temperature of the second enclosure 6. With the above configuration, the temperature of the fluid in the pipe 7 can be measured while utilizing the high temperature gradient between the measurement value by the reference thermometer 11 and the measurement value by the thermometer 2 and suppressing the influence of the external environment on the measurement value by the reference thermometer 11, thereby further improving measurement accuracy.

[0040] The first clamping member 3 and the second clamping member 4 clamp the tube 7 and the thermometer 2 with the reference thermometer 11 integrally provided in the first enclosure 5. The above configuration eliminates the need to attach the reference thermometer 11 to the first enclosure 5 during installation, further improving ease of installation.

[0041] The temperature measuring unit 2a of the thermometer 2 is positioned within the container 12, biased toward the downstream side of the fluid in the tube 7 in the longitudinal direction of the tube 7. According to the above configuration, the temperature is measured by the temperature measuring unit 2a of the thermometer 2 at a position where the fluid in the tube 7 flows linearly within the container 12 and is rectified (a position where the fluid has flowed a distance, for example, about 10 times the inner diameter of the tube 7 after entering the container 12), thereby further improving the measurement accuracy.

[0042] The first clamping member 3 has a first recess 3d, and the second clamping member 4 has a second recess 4d, and the first clamping member 3 and the second clamping member 4 clamp the tube 7 and the thermometer 2 in the first recess 3d and the second recess 4d. With the above configuration, the tube 7 and the thermometer 2 can be easily clamped, further improving ease of installation.

[0043] The temperature measuring device 1 has a fastener 13 that tightens the second clamping member 4 relative to the first clamping member 3 in the first direction D1. According to the above configuration, the pipe 7 and thermometer 2 can be clamped and held with an appropriate force by adjusting the tightness of the fastener 13 according to the size of the pipe 7. In this embodiment, the fastener 13 is composed of a bolt 13a having a screw shaft (not shown) and a head 13a1, and a screw hole (not shown) provided in the second clamping member 4 that screws onto the screw shaft of the bolt 13a, but is not limited to this. In this embodiment, the temperature measuring device 1 is provided with two fasteners 13, but this number can be set as appropriate.

[0044] The first clamping member 3, the second clamping member 4, the first enclosure 5 and the second enclosure 6 are each formed of a material such as, but not limited to, a resin, such as PEEK (polyetheretherketone).

[0045] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and the above-described embodiments can be modified in various ways without departing from the gist of the present disclosure. [Explanation of symbols]

[0046] 1 Temperature measuring device 2 thermometer 2a Temperature measuring part 3 First clamping member 3a 1st main clamping part 3b 1st sub-pinching part 3b1 1st arm 3b2 1st protrusion 3c 1st plate member 3c1 First leaf spring part 3d First recess 4 Second clamping member 4a Second main clamping part 4b 2nd sub-pinching part 4b1 2nd arm 4b2 Second protrusion 4c 2nd plate member 4c1 Second leaf spring part 4d Second recess 5. First Enclosure 6 Second Enclosure 7 tubes 8 Pressing part 9 Elastic annular member 10. Thermal Conductors 11 Reference thermometer 11a Reference temperature measuring section 12 containers 13 Fasteners 13a Bolt 13a1 Head S Insulated space D1 1st direction D2 2nd direction

Claims

1. a thermometer, a first clamping member, a second clamping member, a first enclosure, and a second enclosure; the first clamping member and the second clamping member clamp a pipe through which a fluid flows and the thermometer; the first enclosure and the second enclosure sandwich the pipe to form a heat insulating space facing the first clamping member and the second clamping member around the pipe, a temperature measuring device for measuring the temperature of the fluid in the pipe by measuring the temperature of the surface of the pipe in the portion surrounded by the first and second enclosures with the thermometer;

2. The temperature measuring device according to claim 1 , further comprising a pressing portion that presses the temperature measuring portion of the thermometer toward the surface of the pipe.

3. the first clamping member has a first main clamping portion and a first sub-clamping portion integrally provided with the first main clamping portion, the second clamping member has a second main clamping portion and a second sub-clamping portion integrally provided with the second main clamping portion, the pressing portion is composed of a first sub-clamping portion and a second sub-clamping portion, The temperature measuring device according to claim 2, wherein the first sub-clamping portion and the second sub-clamping portion clamp the pipe and the temperature measuring portion of the thermometer by clamping the pipe and the thermometer with the first main clamping portion and the second main clamping portion.

4. The temperature measuring device according to claim 1 , wherein the first clamping member and the second clamping member clamp the tube and the thermometer in a state where the first clamping member is integrally provided on the first enclosure.

5. The temperature measuring device according to claim 1 , wherein the first clamping member and the second clamping member clamp the tube and the thermometer in a state where the thermometer is integrally provided in the first enclosure.

6. The temperature measuring device according to claim 1 , further comprising a thermal conductor filling a gap between the surface of the tube and the temperature measuring portion of the thermometer.

7. The temperature measuring device according to claim 6 , wherein the first clamping member and the second clamping member clamp the tube and the thermometer in a state where the thermal conductor is integrally provided on the first enclosure.

8. 2. The temperature measurement device of claim 1, further comprising a reference thermometer for measuring the temperature outside the tube.

9. 9. The temperature measuring device according to claim 8, wherein the reference thermometer measures the temperature inside the outer surface of a container formed by the first enclosure and the second enclosure.

10. The temperature measurement device of claim 9 , wherein the reference thermometer measures the temperature of the first enclosure, the second enclosure, or the insulated space.

11. The temperature measuring device according to claim 8 , wherein the first clamping member and the second clamping member clamp the tube and the thermometer in a state where the reference thermometer is integrally provided in the first enclosure.

12. The temperature measuring device according to claim 1 , wherein the heat insulating space is a space in which no object is placed or a space in which a heat insulating material is placed.

13. 2. The temperature measuring device according to claim 1, wherein the temperature measuring portion of the thermometer is positioned within a container consisting of the first enclosure and the second enclosure, biased toward the downstream side of the fluid in the pipe in the longitudinal direction of the pipe.

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