JP7227636B2 - Vibration probes and measuring equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vibration probe and a measuring device, and more particularly to a vibration probe and a measuring device for measuring pipes through which steam or condensate flows, steam traps, and 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 is used that includes a vibration probe for measuring the intensity of vibration of the steam trap and a temperature probe for measuring the surface temperature of the steam trap.

Here, as a measuring device, there are a portable type carried by a worker and an installation type in which a vibration probe and a temperature probe are fixed to a steam trap. 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 and a probe rod 913 . 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 . 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 .

JP 2018-116337 A

However, in the conventional measuring device 9, the heat from the steam trap 501 is transmitted to the vibration sensor 910 via the probe rod 913 and the pedestal 911, but the heat thus transmitted causes the vibration sensor 910 to No measures have been taken to protect it. Therefore, particularly in the installation type measuring device 9, there is a fear that the vibration sensor 910 will be broken or damaged due to constant exposure to heat from the steam trap 501. FIG. Specifically, the steam trap 501 reaches a maximum temperature of about 550° C., and in the installation type measuring device 9, the heat from the steam trap 501 is transmitted to the vibration sensor 910 as indicated by an arrow B, and the vibration is It is conceivable that the temperature of the sensor 910 exceeds the heat resistance temperature of the vibration sensor 910 (for example, 200° C.).

It is conceivable to use a vibration sensor 910 having a high heat-resistant temperature in order to prevent failure or breakage of the vibration sensor 910. However, this is a special sensor and causes an increase in parts cost. Therefore, a vibration sensor having a high heat resistance temperature cannot be used.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances as described above, and is capable of suppressing failure or breakage of a vibration sensor caused by heat from an object to be measured, and suppressing an increase in manufacturing costs. It is an object of the present invention to provide a vibration probe capable of measuring the intensity of vibration with high accuracy and a measuring apparatus equipped with the vibration probe.

A vibration probe according to an aspect of the present invention includes a probe rod, a vibration sensor, a heat insulating member, a pedestal, a first metal plate member and a second metal plate member. The probe rod is a member arranged such that its tip is in contact with an object to be measured, which is an object whose vibration intensity is to be measured, and is made of a first metal material. The vibration sensor measures the intensity of the vibration based on the vibration input from the tip of the probe rod. The heat insulating member is interposed between the probe and the vibration sensor, is capable of transmitting the vibration input from the probe to the vibration sensor, and is capable of transmitting the vibration input from the probe to the vibration sensor. It is a member that insulates heat transmitted from the object to be measured, and is made of fine ceramics.

The pedestal is a member inserted between the vibration sensor and the heat insulating member, capable of transmitting the vibration transmitted through the heat insulating member to the vibration sensor, and is made of a second metal material. formed. The first metal plate material is a member inserted between the probe rod and the heat insulating member in a state of being in close contact with the respective end surfaces of the probe rod and the heat insulating member, the fine ceramics and It is made of a third metal material having a hardness lower than that of the first metal material. The second metal plate is a member inserted between the pedestal and the heat insulating member in a state of being in close contact with the respective end surfaces of the pedestal and the heat insulating member, and is a member that includes the fine ceramics and the second metal plate. It is made of a fourth metal material having a hardness lower than that of the second metal material.

The vibration probe according to the above aspect employs a structure in which a heat insulating member is interposed between the probe rod and the vibration sensor. The heat insulating member is made of fine ceramics, and has the functions of transmitting vibration from the probe to the vibration sensor and insulating the probe from the vibration sensor. Therefore, in the vibration probe according to the above aspect, it is possible to suppress failure or breakage of the vibration sensor due to heat from the object to be measured without adopting a vibration sensor having high heat resistance.

Further, in the vibration probe according to the above aspect, the first metal plate member is interposed between the probe rod and the heat insulating member, and the second metal plate member is interposed between the pedestal portion and the heat insulating member. The third metal material forming the first metal plate material has a lower hardness than the fine ceramics forming the heat insulating member, and the fourth metal material forming the second metal plate material is also the fine ceramics forming the heat insulating member. lower hardness than

Here, in general, members made of fine ceramics have irregularities on the outer peripheral surface including the end surface. For this reason, even if the probe rod or the pedestal portion is brought into direct contact with the heat insulating member made of fine ceramics, a minute gap is formed between the end faces.

On the other hand, in the vibration probe according to the above aspect, the first metal plate material having low hardness is inserted between the probe rod and the heat insulating member, and the second metal plate material having similarly low hardness is inserted between the base portion and the heat insulating member. It adopts a configuration in which a plate material is inserted. Therefore, when the first metal plate member and the second metal plate member are brought into contact with the respective end faces of the heat insulating member, the protrusions on the end faces of the heat insulating member are embedded in the first metal plate member and the second metal plate member, and the heat insulating member Parts of the first metal plate material and the second metal plate material that have plastically flowed due to the embedding flow into the recesses in the end faces of the .

Therefore, in the vibration probe according to the above aspect, even if a heat-insulating member made of fine ceramics is employed, it is difficult for air gaps to occur in the vibration transmission path, and vibration measurement can be performed with high accuracy.

In the vibration probe according to the above aspect, both the first metal material and the second metal material may be stainless steel, and each of the third metal material and the fourth metal material may be Fe and a metal material containing at least one of Cu and Al.

In the vibration probe according to the above aspect, the third metal material forming the first metal plate material and the fourth metal material forming the second metal plate material include at least one of Fe, Cu, and Al. Adopt materials. Therefore, in the vibration probe according to the above aspect, even if the end face of the heat insulating member made of fine ceramics has unevenness, the first metal plate and the second metal plate are brought into contact with the end face without gaps. can be made If the first metal plate material and the second metal plate material are formed using, for example, a cold-rolled steel plate (SPCC), the material can be easily obtained, and an increase in manufacturing cost can be suppressed.

In the vibration probe according to the above aspect, the heat insulating member may be made of alumina ceramics.

In the vibration probe according to the above aspect, the heat insulating member is made of alumina ceramics. Therefore, even if a heat-insulating member is interposed between the probe and the vibration sensor, it is advantageous in that the transmission of vibration from the tip of the probe to the vibration sensor is improved. It should be noted that silicon carbide ceramics, silicon nitride ceramics, zirconia ceramics, etc., may also be employed as materials constituting the heat insulating member.

A measuring device according to an aspect of the present invention is a measuring device that measures the intensity of vibration of a measurement object and outputs the measurement result to an external device. A measuring device according to this aspect includes the vibration probe according to any one of the above aspects.

Since the measuring device according to the above aspect includes the vibration probe according to any one of the above aspects, it is possible to suppress failure or breakage of the vibration sensor due to heat from the object to be measured, and increase manufacturing costs. It is possible to measure the intensity of vibration with high accuracy while suppressing the

The measuring device according to the above aspect may further include a bracket for fixing the vibration probe to the object to be measured.

The measuring device according to the above aspect is a so-called installation type measuring device in which the vibration probe is fixed to the measurement object with a bracket. When the vibration probe is fixed to the object to be measured by the bracket as described above, the object to be measured and the tip of the vibration probe are always in contact with each other. In this state, heat from the object to be measured is transmitted to the probe rod of the vibration probe. It is possible to suppress failure or breakage of the vibration sensor due to heat from the object. Therefore, it is possible to suppress the failure or damage of the vibration sensor without using a heat-resistant vibration sensor (having resistance to high heat), and measure the intensity of vibration with high accuracy while suppressing the increase in manufacturing cost be able to.

In each of the above aspects, it is possible to suppress failure or breakage of the vibration sensor due to heat from the object to be measured, and to measure the intensity of vibration with high accuracy while suppressing an increase in manufacturing costs. .

It is a mimetic diagram showing the composition of the measuring device concerning the embodiment of the present invention. (a) is a side view showing the configuration of a vibration probe, and (b) is a perspective view showing the configuration of a heat insulating member. It is a side view which shows the partial structure of a vibration probe. (a) is a cross-sectional view showing how heat is transmitted in the vibration probe according to the embodiment, and (b) is a schematic diagram showing how heat is transmitted in the vibration probe according to the comparative example. (a) is an exploded perspective view showing the heat insulating member and the metal plate material attached to the end face, (b) is a sectional view showing the heat insulating member and the metal plate material before attachment, and (c) is after attachment. 3 is a cross-sectional view showing a heat insulating member, a heat insulating member, and a metal plate material in FIG. 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 vibration probe 11, a temperature probe 12, a cable 13, and a bracket . The main unit 10 includes a housing, a controller and a signal transmission unit accommodated in the housing, and a battery. The controller of the main unit 10 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 perform arithmetic processing on information about the intensity of vibration input from the vibration probe 11 and information about temperature input from the temperature probe 12 . The processed signal is transmitted (externally output) from the signal transmission unit to the main server of the plant or the like.

In this embodiment, the main body 10 is arranged at a position separated from the steam trap 500, which is an object to be measured for vibration and temperature.

Tip 113 a of vibration probe 11 and tip 12 a of temperature probe 12 are each arranged to abut surface 500 a of steam trap 500 . Vibration probe 11 and temperature probe 12 are positionally fixed relative to steam trap 500 by bracket 14 .

A cable 13 is provided for signal connection between the vibration probe 11 and the temperature probe 12 and the main body 10 . In this embodiment, signal connection between the vibration probe 11 and the temperature probe 12 and the main unit 10 is performed by a wired system, but in the present invention, signal connection can be performed by a wireless system.

2. Configuration of Vibration Probe 11 The configuration of the vibration probe 11 will be described with reference to FIGS. 2 and 3. FIG.

As shown in FIG. 2A, the vibration probe 11 includes a vibration sensor (piezoelectric acceleration sensor) 110, a pedestal portion 111, a heat insulating member 112, a probe rod 113, a plurality of screws 114, and a metal plate material. 115, 116. As shown in the drawn portion of FIG. 2(a), the probe rod 113 has a cylindrical shape with a hollow portion 113c formed therein. Tip 113a of probe 113 contacts surface 500a of steam trap 500 (see FIG. 1). In this embodiment, the probe rod 113 made of stainless steel (first metal material) is used as an example.

A heat insulating member 112 is inserted between the probe rod 113 and the vibration sensor 110 . More specifically, the heat insulating member 112 has a metal plate material (first metal plate material) 115 and a metal plate material (second metal plate material) 116 in close contact with each other at both ends, and is positioned between the probe 113 and the pedestal portion 111. is provided in

As shown in FIG. 2B, the heat insulating member 112 is made of alumina ceramics, which is a kind of fine ceramics, and has a hollow portion 112a formed therein and openings 112b and 112c at both ends in the longitudinal direction. It has an open cylindrical shape. The outer peripheral wall of the heat insulating member 112 is provided with two screw holes 112d at both ends in the longitudinal direction.

The pedestal portion 111 is inserted between the vibration sensor 110 and the heat insulating member 112 . The pedestal 111 is a cylindrical or columnar member made of stainless steel (second metal material).

Each of the metal plate members 115 and 116 is a ring-shaped plate member formed using a cold-rolled steel plate (SPCC). The material for forming the metal plates 115 and 116 (the third metal material and the fourth metal material) is not limited to cold-rolled steel plate (SPCC), but alumina ceramics forming the heat insulating member 112 , and the material having hardness lower than that of the stainless steel forming the probe 113 and the pedestal 111 . Specifically, the metal plate members 115 and 116 can be made of a material containing at least one of Fe, Cu, and Al and having a lower hardness than alumina ceramics and stainless steel.

As shown in FIG. 3, the fitting portion 111b of the pedestal portion 111 is fitted into the hollow portion 112a of the heat insulating member 112 through the opening 112b. The fitting portion 111b of the pedestal portion 111 is formed so that one surface 116b is in close contact with the end surface 112f of the heat insulating member 112 and the other surface 116c is in close contact with the end surface 111c of the pedestal portion 111. The hole 116a of the metal plate member 116 sandwiched between 111 and the heat insulating member 112 is inserted.

A fitting portion 113b of the probe rod 113 is fitted into the hollow portion 112a of the heat insulating member 112 through an opening 112c. The insertion portion 113b of the probe 113 is also arranged so that one surface 115b is in close contact with the end surface 112e of the heat insulating member 112 and the other surface 115c is in close contact with the end surface 113d of the probe 113. The hole 115a of the metal plate 115 sandwiched between the probe 113 and the heat insulating member 112 is inserted.

The fitting portion 111b of the pedestal portion 111 and the fitting portion 113b of the probe rod 113 and the heat insulating member 112 are fixed by screws 114 so as to be in direct contact with each other in the radial direction (see FIG. 12(a)). In the hollow portion 112a of the heat insulating member 112, the fitting portion 111b of the pedestal portion 111 and the fitting portion 113b of the probe rod 113 are spaced apart from each other. In other words, the insertion portion 111b of the pedestal portion 111 and the insertion portion 113b of the probe rod 113 are not in direct contact.

A vibration sensor 110 is fixed in direct contact with the other end surface 111 a of the base portion 111 .

3. Heat Insulation in Vibration Probe 11 Heat insulation in the vibration probe 11 will be described with reference to FIG. 4A is a cross-sectional view showing how heat is transmitted in the vibration probe 11 according to the present embodiment, and FIG. 4B is a cross-sectional view showing how heat is transmitted in the vibration probe 91 according to the comparative example. It is a schematic diagram.

As shown in FIG. 4A, in the vibration probe 11 according to the present embodiment, since the tip 113a of the probe rod 113 is in contact with the surface 500a of the steam trap 500, the heat from the steam trap 500 is detected. It travels through the contact rod 113 (arrow A1).

However, since the heat insulating member 112 made of alumina ceramics is interposed between the probe 113 and the vibration sensor 110, the heat transmitted through the probe 113 is transmitted to the vibration sensor 110. is suppressed. Further, in the hollow portion 112a of the heat insulating member 112, the fitting portion 113b of the probe 113 and the fitting portion 111b of the pedestal portion 111 are arranged with a space therebetween. It is also suppressed that heat is transmitted directly to. Therefore, in the vibration probe 11 according to this embodiment, the heat transmitted through the probe rod 113 is suppressed from being transmitted to the vibration sensor 110 .

On the other hand, as shown in FIG. 4B, in the vibration probe 91 according to the comparative example, the vibration sensor 910 is fixed to the end surface 911a of the base portion 911, and the probe rod 913 is fixed to the other end surface of the base portion 911. It is fixed to the end surface 911b. Therefore, the heat transmitted through the probe rod 913 is transmitted to the vibration sensor 910 through the pedestal portion 911 (arrow A2). Therefore, in the vibration probe 91 according to the comparative example, the heat from the steam trap may cause the vibration sensor 910 to malfunction or break.

4. Dimensions of each member of the vibration probe 11 In a measurement object such as a steam trap in which either steam or condensate (drain) flows, when the vibration is measured, whether or not the fluid flowing in the measurement object is steam Vibration intensity of a specific frequency component varies greatly depending on the measurement object, and in particular, by measuring the vibration intensity near 10 kHz, it is known that whether or not the fluid flowing through the object to be measured is steam can be determined with relatively high accuracy. (Japanese Unexamined Patent Application Publication No. 2014-133948).

Therefore, it is important to design the vibration probe 11 of the measuring device 1 used for diagnosing a steam leak such as a steam trap so that the resonance frequency is around 10 kHz. Based on such knowledge, the length and thickness of the pedestal portion 111, the heat insulating member 112, the probe 113, and the metal plate members 115 and 116 are set. When setting the dimensions of each member, the material coefficient of the material used to form each member is also taken into consideration.

5. Joining State of Metal Plates 115 and 116 to End Faces 112e and 112f of Heat Insulating Member 112 The joining state of metal plate members 115 and 116 to end faces 112e and 112f of heat insulating member 112 will be described with reference to FIG. Although FIG. 5 shows only the joining state of the metal plate material 116 to the end face 112f of the heat insulating member 112, the joining state of the metal plate material 115 to the end face 112e of the heat insulating member 112 is the same.

As shown in FIG. 5(a), the surface 116b of the metal plate 116 is brought into contact with the end surface 112f of the heat insulating member 112 having a cylindrical shape, with the hole 116a of the metal plate 116 matching the opening 112b. contact. As shown in the drawn portion of FIG. 5(a), the heat insulating member 112 made of alumina ceramics has fine unevenness 112g on the end face 112f. Therefore, when a member made of a material having high hardness such as stainless steel is brought into contact with the end surface 112f, there is concern that the unevenness 112g may cause minute gaps.

On the other hand, as shown in FIG. 5B, in the present embodiment, a metal plate material 116 formed using a cold-rolled steel plate (SPCC) having a lower hardness than fine ceramics or stainless steel is used as a heat insulating member 112. It is supposed to be brought into contact with the end surface 112f. When the surface 116b of the metal plate material 116 formed using a cold-rolled steel plate (SPCC) with low hardness is pressed against the end surface 112f of the heat insulating member 112 with a predetermined pressure, the heat insulating member is formed as shown in FIG. The convex portion on the end face 112f of the metal plate member 112 intrudes (indents) inward in the thickness direction of the metal plate member 116 . In addition, since the convex portion of the end surface 112f of the heat insulating member 112 sinks into the metal plate material 116, plastic flow occurs in the metal plate material 116, and part of the metal of the metal plate material 116 fills the concave portion of the end surface 112f of the heat insulating member 112. be done. Therefore, in the vibration probe 11 according to this embodiment, the metal plates 115 and 116 are in close contact with the end faces 112e and 112f of the heat insulating member 112 without gaps, and the vibration input from the tip 113a of the probe 113 is small. It is transmitted to the vibration sensor 110 with damping.

6. Effect The vibration probe 11 according to this embodiment employs a structure in which the heat insulating member 112 is inserted between the probe rod 113 and the vibration sensor 110 . The heat insulating member 112 is made of alumina ceramics, which is a kind of fine ceramics, and has the function of transmitting vibration from the probe 113 to the vibration sensor 110 and insulating the probe 113 and the vibration sensor 110 from each other. . Therefore, in the vibration probe 11, even if the vibration sensor 110 having high heat resistance is not adopted, it is possible to suppress failure or breakage of the vibration sensor 110 due to heat from the steam trap 500, which is the object to be measured.

In the vibration probe 11, a metal plate member 115 is interposed between the probe rod 113 and the heat insulating member 112, and a metal plate member 116 is interposed between the pedestal portion 111 and the heat insulating member 112, respectively. The cold-rolled steel plate (SPCC) forming the metal plates 115 and 116 has a lower hardness than the alumina ceramics forming the heat insulating member 112 .

Here, as described with reference to FIG. 5, the heat insulating member 112 made of fine ceramics such as alumina ceramics has irregularities 112g on the outer peripheral surface including the end surfaces 112e and 112f. Therefore, when the probe 113 or the pedestal portion 111 is brought into direct contact with the end faces 112e, 112f of the heat insulating member 112, a fine gap is formed between the end faces 112e, 112f and the end faces 111c, 113d. will be lost.

On the other hand, in the vibration probe 11 according to the present embodiment, the metal plate material 115 with low hardness is inserted between the probe rod 113 and the heat insulating member 112, and the same hardness A configuration in which a metal plate material 116 having a low Therefore, by bringing the metal plates 115 and 116 into contact with the respective end faces 112e and 112f of the heat insulating member 112 and pressing them with a predetermined pressure, the protrusions on the end faces 112e and 112f of the heat insulating member 112 are formed by the metal plates 115 and 112f. Part of the metal of the metal plates 115 and 116 that has plastically flowed into the recesses in the end faces 112 e and 112 f of the heat insulating member 112 flows into the recesses in the end faces 112 e and 112 f of the insulating member 112 .

Therefore, in the vibration probe 11, even if the heat insulating member 112 made of alumina ceramics is employed, it is difficult for air gaps to occur in the vibration transmission path, and vibration measurement can be performed with high accuracy.

In the vibration probe 11 according to the present embodiment, the metal plates 115 and 116 are made of cold-rolled steel plate (SPCC). The metal plates 115, 116 can be formed from a metallic material containing seeds. Therefore, in the vibration probe 11, even if the end surfaces 112e and 112f of the heat insulating member 112 made of alumina ceramics have irregularities, the metal plates 115 and 116 are brought into close contact with the end surfaces 112e and 112f without gaps. be able to. In the present embodiment, since the metal plates 115 and 116 are formed using cold-rolled steel sheets (SPCC), an increase in manufacturing cost can be prevented from the viewpoint of easy material availability and low material cost. can be suppressed.

Further, in the vibration probe 11 according to this embodiment, the heat insulating member 112 is made of alumina ceramics. Therefore, even if the heat insulating member 112 is interposed between the probe 113 and the vibration sensor 110, the transmission of vibration from the tip 113a of the probe 113 to the vibration sensor 110 should be good. can be done. In addition to alumina ceramics, silicon carbide ceramics, silicon nitride ceramics, zirconia ceramics, or the like can also be used as the material constituting the heat insulating member 112 .

In addition, since the measuring device 1 according to the present embodiment includes the vibration probe 11 having the above-described actions and effects, the vibration sensor 110 can be prevented from malfunctioning or breaking due to heat from the steam trap 500, which is the object to be measured. In addition, it is possible to measure the intensity of vibration with high accuracy while suppressing an increase in manufacturing cost.

The measuring device 1 according to the present embodiment is a so-called installation type measuring device 1 in which the vibration probe 11 is fixed to the steam trap 500 with the bracket 14, as described with reference to FIG. When the vibration probe 11 is fixed to the steam trap 500 by the bracket 14 in this way, the steam trap 500 and the tip 113a of the probe rod 113 of the vibration probe 113 are always in contact with each other. In this state, the heat from the steam trap 500 is transmitted to the probe 113 of the vibration probe 11. In the vibration probe 11, the heat insulating member 112 is interposed between the probe 113 and the vibration sensor 110. Since it is inserted, it is possible to prevent the vibration sensor 110 from malfunctioning or breaking due to heat from the steam trap 500 . Therefore, it is possible to prevent the vibration sensor 110 from failing or breaking even without using a heat-resistant vibration sensor (having resistance to high heat), and measure the intensity of vibration with high accuracy while suppressing an increase in manufacturing costs. can do.

As described above, in the vibration probe 11 according to the present embodiment and the measuring device 1 including the vibration probe 11, failure or damage of the vibration sensor 110 caused by heat from the steam trap 500 can be suppressed, and It is possible to measure the intensity of vibration with high accuracy while suppressing an increase in manufacturing cost.

[Modification]
Although detailed description is omitted above, the temperature probe 12 in the measuring device 1 has a thermocouple. However, in the present invention, other temperature measuring devices such as thermistors can be used as temperature probes instead of thermocouples.

In the above-described embodiment, the probe rod 113 is a cylindrical member having a hollow portion 113d, but the present invention is not limited to this. For example, it is possible to employ a probe rod having a solid cylindrical shape. In addition, the cross-sectional shape is not limited to an annular shape or a circular shape, but may be a polygonal shape, an oval shape (including an elliptical shape), or a shape that is hollow inside. is also possible.

In the above embodiment, the measuring device 1 having both the vibration probe 11 and the temperature probe 12 is used as an example, but the present invention is applied to a device that has only the vibration probe 11 and measures only the intensity of vibration of the object to be measured. It is also possible to

In the above embodiment, the steam trap 500 is used as an example of the object to be measured, but the present invention can also be applied to devices for measuring vibrations of objects other than the steam trap.

In the above-described embodiment, the main unit 10 of the measuring device 1 performs arithmetic processing on the information on the vibration intensity and the information on the temperature, and transmits the processed signal to the outside (for example, the main server of the plant). However, the present invention is not limited to this. For example, a display section may be provided on a part of the outer surface of the main body 10, and the calculation result may be displayed on the display section in response to the operator's request.

1 measuring device 11 vibration probe 110 vibration sensor 112 heat insulating member 113 probe rods 115, 116 metal plate

Claims (5)

a probe rod made of a first metal material, the tip of which is disposed so as to abut against a measurement target that is a target for measuring the intensity of vibration;
a vibration sensor that measures the intensity of the vibration based on the vibration input from the tip of the probe rod;
The measuring device is inserted between the probe and the vibration sensor, is capable of transmitting the vibration input from the probe to the vibration sensor, and is transmitted through the probe. a heat insulating member made of fine ceramics that insulates heat from an object;
a pedestal portion formed of a second metal material, which is interposed between the vibration sensor and the heat insulating member, and which is capable of transmitting the vibration transmitted through the heat insulating member to the vibration sensor;
Hardness lower than the fine ceramics and the first metal material interposed between the probe rod and the heat insulating member in a state of being in close contact with the respective end faces of the probe rod and the heat insulating member a first metal plate made of a third metal material;
A fourth metal material having a hardness lower than that of the fine ceramics and the second metal material, which is interposed between the pedestal portion and the heat insulating member in a state of being in close contact with the respective end surfaces of the pedestal portion and the heat insulating member. a second metal plate material formed from a metal material of
comprising
vibration probe. The vibration probe of claim 1, wherein
both the first metal material and the second metal material are stainless steel;
each of the third metal material and the fourth metal material is a metal material containing at least one of Fe, Cu and Al;
vibration probe. In the vibration probe according to claim 1 or claim 2,
The heat insulating member is made of alumina ceramics,
vibration probe. A measuring device that measures the intensity of vibration of an object to be measured and outputs the measurement results to an external device,
Equipped with the vibration probe according to any one of claims 1 to 3,
measuring device. In the measuring device according to claim 4,
Further comprising a bracket for fixing the vibration probe to the measurement object,
measuring device.

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