JP2022118958A - Measuring device - Google Patents

Abstract

To provide a measuring device that can suppress occurrence of failure even when used for a long period by ensuring high waterproofness.SOLUTION: A vibration probe has a vibration sensor 17 that measures intensity of vibration, and a probe case 14 accommodates therein a part of the vibration probe including the vibration sensor 17. A main body case accommodates a circuit board in signal connection with the vibration sensor 17 and a battery. The probe case 14 has a first case member 141 and a second case member 142 both having a semi-cylindrical shape. A coupling part of the second case member 142 with the first case member 141 is provided with a groove part 142a, and a coupling part of the first case member 141 with the second case member 142 is provided with a rib part 141b inserted into the groove part 142a. A tube-shaped seal packing 145 is inserted into the groove part 142a, while receiving pressing force caused by the insertion of the rib part 141b and being compressively deformed in a cross-sectional direction.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to a measuring device, and more particularly to a measuring device for measuring a pipe through which steam or condensate flows, a steam trap, a steam pipe, or the like.

A steam trap used for discharging only condensate (drainage) from piping equipment through which steam flows is known. In addition, the vibration intensity and surface temperature of the steam trap are measured, and the presence or absence of steam leakage is diagnosed based on their interrelationships. For such diagnosis, a measuring device including a vibration probe such as a steam trap for measuring the intensity of vibration and a temperature probe for measuring the surface temperature of the steam trap is used.

Here, as a measuring device, there are a portable type carried by an operator and an installation type in which a vibration probe or a temperature probe is fixed to a steam trap or the like. Patent Literature 1 discloses an installation type measuring device.

A conventional measuring device 9 will be described with reference to FIG.

As shown in FIG. 6 , the measuring device 9 includes a body portion 90 , a vibration probe 91 , a temperature probe 92 , a cable 93 and a bracket 94 . The vibration probe 91 has a vibration sensor 910 , a pedestal portion 911 , a probe rod 913 and a sensor case 914 . Tip 913 a of probe rod 913 and tip 92 a of temperature probe 92 in vibration probe 91 are arranged so as to contact surface 501 a of steam trap 501 . Note that the temperature probe 92 is also arranged with its upper portion inserted into the sensor case 914 .

Vibration probe 91 and temperature probe 92 are fixed to steam trap 501 by bracket 94 . A signal relating to the intensity of vibration in the steam trap 501 measured by the vibration probe 91 and a signal relating to the surface temperature of the steam trap 501 measured by the temperature probe 92 are transmitted to the main body 90 through the cable 93 .

The main body 90 accommodates a circuit board for processing signals measured by the vibration probe 91 and the temperature probe 92, and a battery as a power source.

JP 2018-116337 A

The installation type measuring device may be attached to a steam trap or steam pipe installed outdoors as well as indoors. Therefore, it is necessary to protect the vibration sensor fixed to the steam trap or steam pipe from moisture such as rain.

However, the measuring device according to the conventional technology does not sufficiently consider waterproofness. For this reason, if the measuring device according to the conventional technology is to be used for a long period of time, there is a concern that a failure may occur due to intrusion of moisture or the like.

SUMMARY OF THE INVENTION The present invention is intended to solve the above-described problems, and provides a measuring device that can suppress the occurrence of failures even when used for a long period of time by ensuring high waterproofness. for the purpose.

A measuring device according to an aspect of the present invention includes a vibration probe and a probe case. The vibration probe is an elongated member, one end of which is disposed so as to come into contact with the object to be measured, and the other end of which is provided with a vibration sensor for measuring the intensity of vibration. The probe case accommodates the rest of the vibration probe including the vibration sensor in a state in which a portion including the one end of the vibration probe extends to the outside.

The probe case has a tubular portion configured by coupling a plurality of probe case members, and a probe base made of a metal material, which closes an opening of the tubular portion and through which the vibration probe is inserted. The plurality of probe cases forming the tubular portion are liquid-tightly coupled with a tubular first seal packing made of an elastic material interposed therebetween.

In two adjacent probe case members coupled to each other among the plurality of probe case members, one probe case member of the two probe case members is connected to the other probe case member of the two probe case members. The other probe case member has a probe groove recessed in the opposite direction to the connecting direction in the connecting portion with and a probe rib portion that is inserted into the probe groove portion with a gap from the wall surface of the probe groove portion.

The first seal packing is inserted into the probe groove in a state of being compressed and deformed in a cross-sectional direction by receiving a pressing force due to insertion of the probe rib into the probe groove. The cylindrical portion of the probe case and the probe base are fluid-tightly coupled with a second seal packing made of polyimide resin interposed therebetween.

In the measuring device according to the above aspect, the first seal packing is interposed between the joint portions of the plurality of probe case members forming the cylindrical portion of the probe case. The first seal packing of the measuring device according to the above aspect is a tubular packing made of an elastic member, and is provided in one probe case member for the probe groove provided in the other probe case member. It is inserted in a state of being compressed and deformed in the cross-sectional direction by receiving the pressing force due to the insertion of the probe rib portion. Therefore, in the measuring device according to the above aspect, the area where the first seal packing is in close contact with the side wall surfaces and bottom surfaces of the probe groove portion and the probe rib portion is larger than when solid packing is used. . Therefore, in the measuring device according to the above aspect, it is possible to realize high waterproofness of the probe case in which the vibration sensor is housed.

Further, in the measuring device according to the above aspect, the tubular portion of the probe case and the probe base are liquid-tightly coupled with the second seal packing made of polyimide resin interposed therebetween. Since the vibration probe is inserted through the probe base, the heat from the object to be measured is transmitted through the vibration probe, and the probe base reaches a high temperature. Even when the temperature of the probe pedestal rises in this way, waterproofness is ensured by the second seal packing made of polyimide resin between the probe pedestal and the tubular portion. Since the second seal packing made of polyimide resin has high heat resistance (approximately 500° C.), deterioration of waterproofness can be suppressed even if heat is transmitted from the object to be measured.

The measuring device according to the above aspect may further include a circuit board signal-connected to the vibration sensor, a battery that supplies power to the circuit board, and a body case that internally accommodates the circuit board and the battery. good. Further, the main body case may be configured by coupling a plurality of main body case members. Further, the plurality of main body case members may be liquid-tightly coupled with a third tubular seal packing made of an elastic material interposed therebetween.

Further, in two adjacent main body case members among the plurality of main body case members, one main body case member of the two main body case members is connected to the other main body case member of the two main body case members. The connecting portion may have a main body groove recessed in a direction opposite to the connecting direction, and the other main body case member is formed so as to protrude in the connecting direction from the connecting portion with the one main body case member. In addition, it may have a main body rib portion that is inserted into the main body groove portion with a gap from the wall surface of the main body groove portion. Further, the third seal packing may be inserted into the main body groove in a state of being compressed and deformed in a cross-sectional direction by receiving a pressing force due to insertion of the main body rib into the main body groove.

In the measuring device according to the above aspect, the third seal packing is interposed between the joint portions of the plurality of main body case members forming the main body case. The third seal packing of the measuring device according to the above aspect is a tube-shaped packing made of an elastic member, and is provided in one main body case member in relation to the main body groove provided in the other main body case member. It is inserted in a state of being compressed and deformed in the cross-sectional direction by receiving the pressing force due to the insertion of the main body rib portion. Therefore, in the measuring device according to the above aspect, the area where the third seal packing is in close contact with the side wall surfaces and bottom surfaces of the main body groove portion and the main body rib portion is wider than when a solid packing is adopted. . Therefore, in the measuring device according to the above aspect, it is possible to realize high waterproofness of the main body case in which the circuit board and the battery are housed.

In the measuring device according to the above aspect, a heat insulating layer made of a heat insulating material may be joined to an inner wall surface of each of the plurality of main body case members.

The measuring device according to the above aspect has a configuration in which a heat insulating layer is joined to each inner wall surface of the plurality of main body case members. Therefore, it is possible to suppress the influence of changes in the external environment temperature on the circuit board and the battery housed inside the body case. In particular, since the battery is highly dependent on temperature, it deteriorates more quickly when exposed to a large temperature change. Exposure to temperature changes can be suppressed, and deterioration can be suppressed. Therefore, in the measuring device according to the above aspect, excellent measurement performance can be obtained over a long period of time.

The measuring device according to the above aspect may further include a temperature probe, a bracket, and a fixing member. The temperature probe is an elongated member, one end of which is disposed so as to contact the object to be measured, and is a probe that measures the surface temperature of the object to be measured. A portion including the one end may be provided so as to extend. The bracket may be fixed to the probe case. The fixing member may be a member that fixes the bracket to the measurement object.

In the measuring device according to the aspect described above, the bracket is fixed to the probe case, and the bracket is fixed to the object to be measured by the fixing member. That is, the measuring device according to the above aspect is an installation type measuring device. In this case, the object to be measured may be placed outdoors. Even in such a case, the probe case has a structure in which the first seal packing is interposed, and a plurality of probe case members are connected to each other. By doing so, it is possible to achieve high waterproofness. Therefore, the measuring device according to the above aspect includes a probe case and a main body case that have high waterproofness even when fixed to an object to be measured outdoors, and the failure or damage of the vibration sensor, circuit board, or battery is prevented. can be suppressed.

In the measuring device according to the above aspect, the temperature probe and the probe base are liquid-tightly coupled with a fourth seal packing interposed therebetween at a portion where the temperature probe passes through the probe base. may Further, the vibration probe and the probe base may be liquid-tightly coupled with a modified fifth seal packing in the portion where the vibration probe passes through the probe base. The fourth seal packing and the fifth seal packing may be made of polyimide resin.

In the measuring device according to the above aspect, the temperature probe and the probe base are liquid-tight with the fourth seal packing made of polyimide resin interposed therebetween at the portion where the temperature probe passes through the probe base. Combined. Since the tip of the temperature probe is arranged so as to abut on the surface of the object to be measured, the temperature of the temperature probe becomes high due to the heat from the object to be measured. Thus, even when the temperature probe is in a high temperature state, waterproofness is ensured by the fourth seal packing made of polyimide resin between the temperature probe and the probe base.

Further, in the measuring device according to the above aspect, the fifth seal packing made of polyimide resin is interposed between the vibration probe and the probe base at the portion where the vibration probe is inserted through the probe base. tightly bound. Since the vibration probe is also arranged so that the tip thereof abuts on the surface of the object to be measured, the heat from the object to be measured raises the temperature. Thus, even when the temperature probe is in a high temperature state, waterproofness is ensured by the fifth seal packing made of polyimide resin between the vibration probe and the probe base. The fourth seal packing and the fifth seal packing made of polyimide resin have high heat resistance (approximately 500° C.), so even if heat is transferred from the object to be measured, deterioration of waterproofness can be suppressed. .

In the measuring device according to each aspect described above, by ensuring high waterproofness, it is possible to suppress the occurrence of failures even when used for a long period of time.

It is a perspective view showing composition of a measuring device concerning an embodiment of the present invention. (a) is a perspective view showing the configuration inside the probe case, and (b) is a perspective view showing the configuration of the bottom portion of the probe case. FIG. 2 is a cross-sectional view showing a cross section taken along line III-III of FIG. 1; It is a perspective view which shows the structure of seal packing. (a) is a perspective view showing the internal structure of the main body, (b) is a cross-sectional view showing the state before the lid is attached to the case, and (c) is a cross-sectional view showing the state where the lid is attached to the case. It is a schematic diagram which shows the structure of the measuring device which concerns on a prior art.

EMBODIMENT OF THE INVENTION Below, embodiment of this invention is described, considering drawing into consideration. In addition, the form described below is an example of the present invention, and the present invention is not limited to the following forms except for its essential configuration.

1. Configuration of Measuring Apparatus 1 A configuration of a measuring apparatus 1 according to an embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 1 , the measuring device 1 includes a main body 10 , a cable 13 , a probe case 14 , a bracket 15 , a U-shaped bolt (fixing member) 15 and a nut (fixing member) 18 . The measuring device 1 also includes a vibration probe and a temperature probe, which will be described later. The cable 13 has a cable body (not shown) and a metal (for example, stainless steel) flexible pipe surrounding the cable body. Therefore, the cable 13 can maintain any posture, and the position of the main body 10 can be adjusted.

In the present embodiment, signal connection between the vibration sensor and the temperature probe housed in the probe case 14 and the circuit board of the main body 10 is performed by a wired system, but in the present invention, signal connection is performed by a wireless system. is also possible.

The bracket 15 is a long plate-shaped member that is joined to the bottom of the probe case 14 (probe base, which will be described later) and extends to both sides in the radial direction of the steam pipe 500 . The U-shaped bolt 16 abuts on the surface 500 a of the steam pipe 500 at its lower portion and is inserted through a through hole formed in the bracket 15 at its upper portion. A nut 18 is screwed onto the threaded portion of the U-shaped bolt 16 . As a result, the probe case 14 is fixed to the steam pipe 500 in such a manner that the tips of the vibration probe and the temperature probe are in direct contact with the surface 500 a of the steam pipe 500 .

2. Detailed Configuration of Probe Case 14 A detailed configuration of the probe case 14 will be described with reference to FIG. In addition, in FIG. 2A, in order to show the internal configuration of the probe case 14, a part of the constituent elements (the second case member 142) is removed.

As shown in FIGS. 2A and 2B, the probe case 14 includes a first case member (the other probe case member) 141 and a second case member (the one probe case member) each having a semi-cylindrical shape. 142, a cylindrical portion configured by coupling the first case member 141 and the second case member 142, a probe base 144 closing the opening at the bottom of the cylindrical portion, and closing the opening at the top of the cylindrical portion. It is provided with a cap member 149 (see FIG. 1), and a sensor case 143 arranged in an inner space formed by the cylindrical portion and the probe base 144 and housing a vibration sensor. The first case member 141 and the second case member 142 are made of ABS resin (acrylonitrile-butadiene-styrene copolymer synthetic resin). Also, the probe base 144 is made of a metal material (for example, stainless steel) and has a bottomed shallow plate shape.

As shown in FIG. 2(a), the first case member 141 and the second case member 142 have an upper opening 141a (first opening 141a) through which the cable 13 extends via a cap member 149 (see FIG. 1). 2 The upper opening of the case member 142 is not shown.) is provided. It should be noted that the packing between the upper opening 141 a of the first case member 141 and the upper opening of the second case member 142 and the cable 13 is modified in a known manner. As a result, the waterproofness of the portion is ensured.

As shown in FIGS. 2(a) and 2(b), each of the vibration probe 11 and the temperature probe 12 has an upper portion housed inside the probe case 14 and a lower portion including the tips 11a and 12a at the bottom of the probe base 144. It extends downward from wall 144b. The upper ends of the vibration probe 11 and the temperature probe 12 are fixed by the sensor case 143 . Although not shown in FIGS. 2A and 2B, the tip 11a of the vibration probe 11 and the tip 12a of the temperature probe 12 are spaced apart from each other along the axial direction of the steam pipe 500. It is in direct contact with the surface 500a of the steam pipe 500 in this state.

As shown in the drawn portion of FIG. 2(b), the probe base 144 has a through hole 144c through which the temperature probe 12 can be inserted in its bottom wall 144b. A heat-resistant packing (fourth seal packing) 147 is interposed between the temperature probe 12 and the probe base 144 at the portion where the temperature probe 12 is inserted through the through hole 144 c of the probe base 144 . The heat-resistant packing 147 is made of polyimide resin and has a heat resistance of about 500.degree. A heat-resistant packing 147 is inserted between the temperature probe 12 and the probe pedestal 144 to ensure liquid-tightness and waterproofness. The temperature probe 12 is provided with a pedestal 12 b directly above the heat-resistant packing 147 . This prevents the heat-resistant packing 147 from being displaced in the vertical direction.

Further, the probe base 144 has a through hole 144d through which the vibration probe 11 can be inserted through its bottom wall 144b. A heat-resistant packing (fifth seal packing) 148 is interposed between the vibration probe 11 and the probe base 144 at the portion where the vibration probe 11 is inserted through the through hole 144d of the probe base 144 . The heat-resistant packing 148 is also made of polyimide resin and has a heat resistance of about 500.degree. Between the vibration probe 11 and the probe pedestal 144, a heat-resistant packing 148 is also interposed to ensure a liquid-tight state, thereby ensuring waterproofness. The vibration probe 11 is provided with a pedestal 11 b directly above the heat-resistant packing 148 . This prevents the heat-resistant packing 148 from being displaced in the vertical direction.

Furthermore, a heat-resistant packing (second sealing packing) 146 is interposed between the probe base 144 and the first case member 141 and the second case member 142 (illustration of the second case member 142 is omitted). The heat-resistant packing 146 is fitted into circumferential grooves provided in the lower portions of the first case member 141 and the second case member 142 . The heat-resistant packing 146 is made of polyimide resin and has a heat resistance of about 500.degree. Waterproofness between the first case member 141 and the second case member 142 and the probe base 144 is ensured by inserting a heat-resistant packing 146 .

3. Coupling Between Case Members 141 and 142 As described above, the probe case 14 has a cylindrical portion configured by coupling the semi-cylindrical first case member 141 and the second case member 142 . The form of connection between the first case member 141 and the second case member 142 that constitute the cylindrical portion will be described with reference to FIG.

As shown in the enlarged portion of B in FIG. 3, the circumferential end surface of the second case member 142 is recessed away from the circumferential end surface of the first case member 141 and extends in the longitudinal direction (perpendicular to the plane of FIG. 3). A groove portion (probe groove portion) 142a is formed extending in the direction of the probe. The groove portion 142 a is open on the circumferential end surface side of the first case member 141 .

On the other hand, a rib portion (probe rib portion) 141b that is inserted into the groove portion 142a when coupled with the second case member 142 protrudes from the circumferential end surface of the first case member 141 . The rib portion 141b is formed to have the same length as the groove portion 142a so as to be inserted over the entire length of the groove portion 142a.

In the state in which the first case member 141 and the second case member 142 are joined, the outer wall surface of the rib portion 141b is in a state in which a gap is left between both side wall surfaces in the width direction and the bottom wall surface in the depth direction of the groove portion 142a. It's becoming A seal packing (first seal packing) 145 made of silicone rubber (elastic member) is inserted in the gap between the groove portion 142a and the rib portion 141b. The seal packing 145 is in a state of being compressed and deformed in the cross-sectional direction by the pressing force due to the insertion of the rib portion 141b into the groove portion 142a. As a result, the seal packing 145 liquid-tightly contacts the wall surfaces of the groove portion 142a and the rib portion 141b over a wide area.

In the measuring device 1 according to the present embodiment, as described above, the seal packing 145 is used to ensure the waterproofness between the first case member 141 and the second case member 142, so that the vibrations contained inward are It is possible to prevent the sensor 17 and the like from being damaged by water.

4. Configuration of Seal Packing 145 The configuration of the seal packing 145 will be described with reference to FIG. 4 . In addition, the cross-sectional view shown in FIG. 4 shows a state in which the seal packing 145 does not receive a pressing force from the outside.

As shown in FIG. 3, the seal packing 145 according to this embodiment is formed of an elongated tube. The seal packing 145 is made of silicone rubber.

As shown in part C of FIG. 4, the seal packing 145 made of silicone rubber has a space 145a inside in the cross-sectional direction. Therefore, as described above, when the rib portion 141b is inserted into the groove portion 142a, it receives a pressing force from the rib portion 141b, and is greatly compressed and deformed in the cross-sectional direction.

5. Configuration of Main Unit 10 A configuration of the main unit 10 will be described with reference to FIG. 5 . In FIG. 5A, the first case member 101 among the members constituting the main body case 100 is omitted.

As shown in FIGS. 5A and 5B, the main body 10 includes a first case member 101 and a second case member 102. As shown in FIGS. As shown in FIG. 5A, the second case member 102 is a case member having a bottomed square tube shape, and the inner space is divided into a plurality of chambers 102b and 102c by a partition wall 102a. The room 102b accommodates a circuit board 103 that receives input of measurement results from the vibration sensor 17 and the temperature sensor 12 of the vibration probe 11 and performs graphical arithmetic processing. The controller configured by the circuit board 103 includes a microprocessor including MPU/CPU, ASIC, ROM, RAM, etc., and memory. The controller executes firmware or the like pre-stored in the memory to process information on the intensity of vibration detected by the vibration probe 11 and the temperature probe 12 and the surface temperature. The processed signal is sent to a diagnostic device.

The circuit board 103 is fixed along part of the partition wall 102a.

A battery case 104 is housed in a room 102c adjacent to the room 102b in which the circuit board 103 is housed, separated by a partition wall 102a. Battery case 104 accommodates a plurality of batteries therein. In this embodiment, a primary battery having a cylindrical external shape is adopted as an example of the battery. Although not shown in detail, a heat insulating layer is formed on the inner wall surface of the battery case 104 .

As shown in FIGS. 5A and 5B, heat insulating layers 105 and 106 are formed on the inner wall surfaces of the first case member 101 and the second case member 102, respectively. The heat insulating layers 105 and 106 are made of, for example, glass wool. As shown in FIG. 5(b), the heat insulating layers 105 and 106 have edge portions 105a and 106a before the first case member 101 and the second case member 102 are joined together. It projects beyond the end faces 101 a and 102 e of the second case member 102 . Then, as shown in FIG. 5(c), when the first case member 101 and the second case member 102 are joined together, the edge portions 105a and 106a of the heat insulators 105 and 106 are compressed (as indicated by arrow D3). (see the pointing part). This ensures high heat insulation of the main body case 100, and protects the battery and the circuit board 103 accommodated in the battery case 104 from changes in the external environment.

At the four corners of the second case member 102, bosses 102d having female threads are formed. When connecting the first case member 101 to the second case member 102, the bolt through which the first case member 101 is inserted is screwed into the female thread formed in the boss 102d.

Although detailed illustration is omitted in FIGS. 5B and 5C, the end surface 101a of the first case member 101 (the portion indicated by the arrow D1) and the end surface 102e of the second case member 102 (the portion indicated by the arrow D2) ) and one case member (one main body case member) are formed with grooves (main body grooves) similar to those described with reference to FIG. 3, and the other case member (other main body case member ) is formed with a rib portion (main body rib portion). As shown in FIG. 5(c), in the state where the first case member 101 and the second case member 102 are joined, the same seal packing (third seal packing) as explained with reference to FIG. Seal packing) is inserted, and the seal packing is compressed and deformed in the cross-sectional direction by the pressing force of the rib portion inserted into the groove portion. Thereby, high waterproofness of the main body case 100 is ensured.

FIG. 4 illustrates an example of the seal packing 145 which is elongated and whose ends are not joined together, but the first case member 101 and the second case member 102 constituting the main body case 100 are separated from each other. As for the seal packing inserted between them, by using a ring-shaped seal packing formed by joining the ends of the seal packing 145 shown in FIG. can be done. The ends are joined by, for example, using a joining tube having an inner diameter equal to the outer diameter of the seal packing 145, and inserting one end of the seal packing 145 from one opening of the joining tube. (for example, bonding with an adhesive), or by inserting the other end of the seal packing 145 from the other opening and bonding (for example, bonding with an adhesive). It is desirable that the tube for joining is made of the same silicone rubber as the seal packing 145 so that it can be compressed and deformed well in the cross-sectional direction.

6. Effect In the measuring device 1 according to the present embodiment, the case members 141 and 142 forming the cylindrical portion of the probe case 14 have the seal packing 145 interposed in their joint portions. Further, the case members 101 and 102 constituting the main body case 100 are also interposed with a third seal packing at their joint portions. The seal packing 145 and the third seal packing are tubular packings made of silicone rubber (elastic member), as described with reference to FIG. The case member 141 is inserted in a state of being compressed and deformed in the cross-sectional direction by receiving a pressing force due to the insertion of the rib portion 141b provided on the case member 141 . Therefore, in the measuring device 1, the area where the seal packing 145 is in close contact with the side wall surfaces and the bottom surfaces of the groove portion 142a and the rib portion 141b is wider than when a solid packing is used. Therefore, in the measuring device 1, the probe case 14 in which the vibration sensor 17 is housed can be made highly waterproof. The main body case 100 composed of the first case member 101 and the second case member 102 having similar structures can also achieve high waterproofness.

In addition, in the measuring device 1, a heat-resistant packing made of polyimide resin is provided between the cylindrical portion of the probe case 14 (the portion composed of the first case member 141 and the second case member 142) and the probe base 144. (Second seal packing) 146 is interposed and liquid-tightly coupled. Since the vibration probe 11 is inserted through the probe base 144, the heat from the steam pipe 500 is transmitted through the vibration probe 11, and the temperature rises. Even when the probe base 144 is heated to a high temperature in this manner, waterproofness is ensured by the heat-resistant packing 146 made of polyimide resin between the probe base 144 and the tubular portion. Since the heat-resistant packing 146 made of polyimide resin has high heat resistance (approximately 500° C.), deterioration of waterproofness can be suppressed even if heat is transferred from the steam pipe 500 .

Further, in the measuring device 1 , heat insulating layers 105 and 106 are formed on the inner wall surfaces of the first case member 101 and the second case member 102 that constitute the main body case 100 of the main body 10 . Therefore, the influence of changes in the external environment temperature on the circuit board 103 and the battery case 104 housed inside the body case 100 can be reduced. In particular, the battery accommodated in the battery case 104 is highly dependent on temperature, and thus deteriorates more quickly when exposed to a large temperature change. By forming the heat-insulating layers 105 and 106 on the outside, deterioration can be suppressed without adopting a special battery having high weather resistance. Therefore, the measurement device 1 can obtain excellent measurement performance over a long period of time.

Also, in the measuring device 1 , a bracket 15 is fixed to the bottom of the probe case 14 , and the bracket 15 is fixed to the steam pipe 500 with a U-shaped bolt (fixing member) 16 and a nut (fixing member) 18 . That is, the measuring device 1 is an installation type measuring device 1, and the measuring device 1 may be arranged outdoors. In this case as well, the probe case 14 and the main body case 100 are structured such that the case members 141, 142, 101, and 102 are connected to each other with the structure in which the seal packing 145 is interposed as described above, so high waterproofness is realized. be able to. Therefore, even when the probe case 14 and the main body case 100 are arranged outdoors, the measuring device 1 has high waterproofness, and the vibration sensor 17, the circuit board 103, and the battery in the battery case 104 are prevented from failure or breakage. can be suppressed.

In addition, in the measuring device 1, the temperature probe 12 and the probe base 144 are interposed between the temperature probe 12 and the probe base 144 at the portion where the temperature probe 12 is inserted through the through hole 144c. ) 147 are interposed and fluid-tightly coupled. Since the tip 12a of the temperature probe 12 is arranged so as to always be in contact with the surface of the steam pipe 500, the heat from the steam pipe 500 raises the temperature. Thus, even when the temperature probe 12 is in a high temperature state, waterproofness is ensured by the heat-resistant packing 147 made of polyimide resin between the temperature probe 12 and the probe base 144 . Since the heat-resistant packing 147 made of polyimide resin has high heat resistance (approximately 500° C.), even if heat is transferred from the steam pipe 500, deterioration of waterproofness can be suppressed.

As described above, in the measuring device 1 according to the present embodiment, it is possible to suppress the occurrence of failures even when used for a long period of time by ensuring high waterproofness.

[Modification]
In the measuring device 1 according to the above-described embodiment, as described with reference to FIG. However, conversely, the groove may be provided on the circumferential end face of the first case member, and the rib may be provided on the circumferential end face of the second case member.

Also, the cross-sectional shapes of the grooves and ribs are not limited to the shapes shown in FIG. For example, it is possible to employ grooves and ribs having a semi-arc cross-sectional shape, or employ polygonal grooves and ribs.

In the above embodiment, the tubular portion of the probe case 14 is formed by joining the two case members 141 and 142, and the body case 100 is also formed by joining the two case members 101 and 102. However, the present invention , but not limited to this. By combining three or more members, the tubular portion of the probe case or the body case can be formed. In this case also, high waterproofness can be ensured by inserting the seal packing 145 between the case members.

Although the probe case 14 is fixed to the steam pipe 500 in the above embodiment, it may be fixed to the steam trap.

Reference Signs List 1 measuring device 10 main body 11 vibration probe 12 temperature probe 14 probe case 15 bracket 16 U-shaped bolt (fixing member)
17 vibration sensor 18 nut (fixing member)
100 main body cases 101, 141 first case members 102, 142 second case member 103 circuit board 104 battery cases 105, 106 heat insulating layer 141b rib portion 142a groove portion 144 sensor case 145 seal packing (first seal packing)
146 heat-resistant packing (second seal packing)
147 heat-resistant packing (fourth seal packing)
148 heat-resistant packing (fifth seal packing)

Claims (5)

a vibration probe which is an elongated member and has one end disposed so as to abut against the measurement object and having a vibration sensor for measuring the intensity of vibration at the other end;
a probe case that accommodates the rest of the vibration probe, including the vibration sensor, in a state in which a portion including the one end of the vibration probe extends to the outside;
with
The probe case has a tubular portion configured by coupling a plurality of probe case members, and a probe base made of a metal material, which closes an opening of the tubular portion and through which the vibration probe is inserted. ,
The plurality of probe cases forming the cylindrical portion are liquid-tightly coupled with a tubular first seal packing made of an elastic material interposed therebetween,
In two adjacent probe case members coupled to each other among the plurality of probe case members, one probe case member of the two probe case members is connected to the other probe case member of the two probe case members. The other probe case member has a probe groove recessed in the opposite direction to the connecting direction in the connecting portion with , a probe rib portion inserted into the probe groove portion with a gap with respect to the wall surface of the probe groove portion;
The first seal packing is inserted into the probe groove portion in a state of being compressed and deformed in a cross-sectional direction by receiving a pressing force due to insertion of the probe rib portion into the probe groove portion,
The tubular portion of the probe case and the probe base are liquid-tightly coupled with a second seal packing made of polyimide resin interposed therebetween,
measuring device. In the measuring device according to claim 1,
further comprising a circuit board signal-connected to the vibration sensor, a battery that supplies power to the circuit board, and a body case that internally accommodates the circuit board and the battery,
The main body case is configured by coupling a plurality of main body case members,
The plurality of main body case members are liquid-tightly coupled with a third tubular seal packing made of an elastic material interposed therebetween,
In two adjacent main body case members among the plurality of main body case members, one main body case member of the two main body case members is a joint portion with the other main body case member of the two main body case members. The other main body case member has a main body groove recessed in a direction opposite to the coupling direction, and the other main body case member is formed so as to protrude in the coupling direction at a coupling portion with the one main body case member, and the main body groove is formed. having a main body rib portion inserted into the main body groove portion with a gap from the wall surface of the
The third seal packing is inserted into the main body groove portion in a state of being compressed and deformed in a cross-sectional direction by receiving a pressing force due to insertion of the main body rib portion into the main body groove portion,
measuring device. In the measuring device according to claim 1 or claim 2,
Each of the plurality of main body case members has a heat insulating layer made of a heat insulating material formed on an inner wall surface thereof,
measuring device. In the measuring device according to any one of claims 1 to 3,
An elongated member, one end of which is disposed so as to abut on the object to be measured, a probe for measuring the surface temperature of the object to be measured, the one including the one end of the probe from the probe case a temperature probe provided so as to extend the portion;
a bracket fixed to the probe case;
a fixing member that fixes the bracket to the measurement object;
further comprising
measuring device. In the measuring device according to claim 4,
the temperature probe and the probe base are liquid-tightly coupled with a fourth seal packing interposed therebetween at a portion where the temperature probe passes through the probe base;
wherein the vibration probe and the probe base are liquid-tightly coupled at a portion where the vibration probe passes through the probe base with a fifth seal packing refurbished therebetween;
The fourth seal packing and the fifth seal packing are made of polyimide resin,
measuring device.

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