WO2019022339A1

WO2019022339A1 - Fluid condition measurement device

Info

Publication number: WO2019022339A1
Application number: PCT/KR2018/003776
Authority: WO
Inventors: 신창훈; 여철호
Original assignee: 주식회사 차후
Priority date: 2017-07-28
Filing date: 2018-03-30
Publication date: 2019-01-31

Abstract

The present invention relates to a device for measuring the condition of a fluid inside equipment. According to an embodiment of the present invention, there is provided a fluid condition measurement device that can be inserted inside also through a structure that changes the flow of a fluid. The fluid condition measurement device may comprise: a first containing tube; a first fastening plate that is coupled to one end of the first containing tube and has a first through-hole formed in a position in which the first containing tube is coupled; a second containing tube that extends in the longitudinal direction of the first containing tube and contains a first wire therein; a coil member, the other end of which is coupled to one end of the second containing tube, the coil member containing a second wire therein, the second wire being electrically coupled to the first wire, and the coil member extending in the longitudinal direction (direction of extension) of the first containing tube; a sensor assembly coupled to one end of the coil member in order to measure the condition of the fluid and electrically coupled to the second wire; a second fastening plate that is coupled to the other end of the first containing tube and has a second through-hole formed in a position in which the first containing tube is coupled such that the second containing tube can be moved into or out of the first containing tube; and a third fastening plate coupled to the other end of the second containing tube.

Description

Fluid status measuring device

The present invention relates to an apparatus for measuring the state of a fluid inside a machine.

Modern power or power equipment uses fluids such as insulating oil, lubricants, and the like. The environment in which power or electric equipment is used is a very poor environment in which high temperatures, high pressures or vibrations occur. Therefore, in order for the equipment to operate normally, it is necessary to manage the state of the insulating oil and the lubricating oil and to change them at an appropriate time.

Various types of fluid state measurement devices have been introduced to measure fluid conditions. Although there are a variety of fluid state measurement devices, a method of measuring fluid state within a power and / or power equipment is ideal.

On the other hand, various types of valves are used to inject or discharge fluids into the equipment. The gate valve or globe valve regulates the flow of the fluid as the disk or the plug (hereinafter referred to as the disk) moves up and down. In the case of a gate valve, since the region that is opened or closed by the disc (hereinafter referred to as the fluid port) is perpendicular to the flow of the fluid (that is, the fluid flows in only one direction in the valve) It is easy to do. However, in the case of the globe valve, the fluid state measuring device can not be inserted because the fluid port is horizontal to the fluid flow (that is, the direction in which the fluid flows in the valve changes).

According to an embodiment of the present invention, there is provided a fluid state measurement device which can be inserted into the structure through a structure in which the flow of the fluid is changed. The fluid state measuring device includes a first receiving pipe, a first connecting plate coupled to one end of the first receiving pipe and having a first through hole at a position where the first receiving pipe is coupled, A second receiving tube which extends in the direction of the first receiving tube and accommodates a first electric wire therein, a second receiving tube which is coupled to one end of the second receiving tube and which is electrically coupled to the first electric wire, A coil member extending in the longitudinal direction of the first receiving tube, a sensor assembly coupled to one end of the coil member for measuring the state of the fluid and electrically coupled to the second wire, A second fastening plate coupled to the other end and having a second through hole at a position where the first receiving pipe is coupled to allow the second receiving pipe to be drawn into or out of the first receiving pipe, The third fastening The can be included.

According to another embodiment of the present invention, there is provided a fluid state measurement apparatus capable of detaching a coil member according to a path structure of a power or electric power equipment to be installed. The fluid state measuring device includes a first receiving pipe, a first connecting plate coupled to one end of the first receiving pipe and having a first through hole at a position where the first receiving pipe is coupled, A sensor assembly coupled to one end of the second receiving tube for measuring the state of the fluid and electrically coupled to the wire, a second receiving tube extending in the direction of the first receiving tube, A second coupling plate coupled to the other end and having a second through hole at a position where the first receiving tube is coupled to allow the second receiving tube to be drawn into or out of the first receiving tube; And a third fastening plate coupled to the other end of the second receiving tube.

Here, the coil member may include a horizontally extending portion extending horizontally from one end of the coil member to one end of the coil member, and an inclined extension portion extending obliquely from the horizontally extending portion to one end of the coil member, And a curved portion connecting the horizontal extension portion and the slant extension portion.

Here, the coil member may be a cylindrical hollow formed of a metal or a metal alloy.

Here, at least one of a distance for drawing the second receiving tube and an angle for rotating the second receiving tube may be displayed on the outer surface of the second receiving tube.

Here, the fluid state measuring apparatus may further include a valve in fluid communication with the outer surface of the first receiving tube.

The fluid state measuring apparatus may further include a sealing member located inside the first receiving tube and sealing the fluid flowing into the first receiving tube so that the fluid does not flow out to the outside.

Here, the first through hole may be formed at a position spaced apart from the center of the first fastening plate.

Here, the third fastening plate may be fixed to the second fastening plate.

Here, the sensor assembly may include a sensor housing having a through hole for fluid inflow and a sensor disposed inside the sensor housing for measuring a state of the fluid to generate a measurement signal and outputting the measurement signal to the second electric wire electrically connected to the sensor housing .

The fluid state measuring apparatus may further include a signal processing device electrically coupled to the first electric wire extended from the third fastening plate and receiving a measurement signal generated in the sensor assembly.

Hereinafter, the present invention will be described with reference to the embodiments shown in the accompanying drawings. For the sake of clarity, throughout the accompanying drawings, like elements have been assigned the same reference numerals. It is to be understood that the structure shown in the accompanying drawings is only exemplary embodiments that are illustratively embodied to illustrate the present invention and is not intended to limit the scope of the present invention

1 is a perspective view showing an embodiment of a fluid state measuring apparatus.

2 is a longitudinal sectional view of the fluid measurement apparatus of FIG.

3 is an exploded perspective view showing a sensor assembly coupled to the fluid measurement device of FIG.

Fig. 4 is a partially enlarged view of one end of the coil member of Fig. 1. Fig.

FIGS. 5A, 5B, 5C, 5D, 5E, and 5F illustrate a process of inserting the sensor assembly of the fluid measurement apparatus of FIG.

Fig. 6 is a view exemplarily showing a guide in which the operation method shown in Figs. 5A to 5F is printed.

FIG. 7 is a view illustrating a process of inserting the sensor assembly of the fluid measurement device of FIG. 1 fastened to the gate valve into the interior to make contact with the fluid. FIG.

8 is a view illustrating a structure in which the sensor assembly is fully inserted into the power or electric equipment and then fixed.

FIG. 9 is a view showing a state in which the fluid state measuring apparatus of FIG. 1 and the signal processing apparatus are fastened.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Where an element is described as being " connected " or " coupled " to another element, the element may be directly connected or directly coupled to another element, or intermediate intervening elements may be present. On the other hand, if one element is described as being " directly connected " or " directly coupled " to another element, there are no other intermediate elements.

FIG. 1 is a perspective view showing an embodiment of a fluid state measuring apparatus, and FIG. 2 is a longitudinal sectional view of the fluid measuring apparatus of FIG. 1. FIG.

1 and 2, the fluid state measuring apparatus includes a first receiving pipe 100, a second receiving pipe 200, a coil member 300, and a sensor assembly 400. The first receiving pipe 100, the second receiving pipe 200 and the coil member 300 are formed of a metal or a metal alloy which is not invaded or corroded by fluid and is not deformed by high temperature, high pressure, or vibration. The first receiving tube 100, the second receiving tube 200, and the coil member 300 are illustrated as having a cylindrical shape having a circular section in the accompanying drawings, but this is merely an example, Of course, be formed.

The first receiving tube 100 extends in the horizontal direction (i.e., the longitudinal direction) of FIG. 2 and accommodates at least a part of the second receiving tube 100 and / or at least a part of the coil member 300 in the second receiving tube 100 . The first fastening plate 110 is coupled to one end of the first receiving tube 100 and the second fastening plate 120 is coupled to the other end of the first receiving tube 100. The first fastening plate 110 includes a first through hole 111 formed at a position where one end of the first accommodating tube 100 is coupled. The second fastening plate 120 includes a second through hole 121 formed at a position where the other end of the first accommodating tube 100 is coupled. At least a portion of the second receiving tube 200 and / or at least a portion of the coil member 300 may be inserted into the interior of the power or power equipment through the first through hole 111. At least a part of the second storage tube 200 may be drawn into the first storage tube 100 through the second through hole 121 or may be drawn out from the first storage tube 100. The first fastening plate 110 includes a plurality of fastening grooves 112 for fastening the fluid state measuring device to a fluid inlet or fluid outlet of a power or electric equipment, for example, an internal combustion engine, a transformer, or the like. Here, the first fastening plate 110, the second fastening plate 120, and the third fastening plate 210 are illustrated as having a circular shape in the accompanying drawings, but the present invention is not limited thereto. For example, Of course.

In one embodiment, the first receiving tube 100 may be coupled to the central region of the first fastening plate 110. In another embodiment, the first receiving tube 100 may be spaced apart from the central region of the first fastening plate 110. The distance that the first receiving tube 100 and the corresponding first through-hole 111 are spaced apart from the central region of the first fastening plate 110 is determined by the position of the fluid inlet or fluid outlet to which the fluid state measuring device is coupled and / Or the structure of the path through which the sensor assembly 400 will travel to reach the interior of the power or power equipment.

In one embodiment, the first valve 140 is fluidly coupled to the first receiving tube 100. The first valve 140 may be used to discharge the air inside the first receiving tube 100 to the outside when the fluid flows into the first receiving tube 100 through the first through hole 111 . To this end, the first valve 140 is arranged such that the outlet not coupled to the first receiving tube 100 faces the opposite direction of the paper. In another embodiment, the second valve 145 is fluidly coupled to the first receiving tube 100. The second valve 145 may be used to discharge the fluid without separating the fluid state measurement device from the power or power equipment. To this end, the second valve 145 may be disposed such that the outlet not coupled to the first receiving tube 100 faces the ground.

In one embodiment, at least a portion of the internal space of the first receiving tube 100 is occupied by the sealing member 130. A sealing member 130 is disposed at a position adjacent to the second fastening plate 120 in order to prevent the fluid flowing into the first accommodating tube 100 from flowing out. The second receiving tube 200 extends through the central region of the sealing member 140 and can be drawn into the first receiving tube 100 by a force externally applied thereto. In another embodiment, in order to prevent the sealing member 130 from moving due to friction caused by the pulling-in or pulling-out of the second receiving pipe 200, the first receiving pipe 100 is provided with a movement preventing portion 150 ). The sealing member 140 may be disposed between the movement preventing portion 150 and the second fastening plate 120. In another embodiment, a plurality of sealing members may be disposed within the first receiving tube 100.

The second receiving tube 200 extends in the longitudinal direction of the first receiving tube 100, and at least part of the second receiving tube 200 is accommodated in the first receiving tube 100. One end of the second receiving tube 200 is coupled to the coil member 300 and the other end of the second receiving tube 200 is coupled to the third connecting plate 210. The second receiving tube 200 receives a first wire (not shown) therein, and the first wire is electrically connected to a second wire (not shown) accommodated in the coil member 300. To this end, a first connector 220 electrically connected to the first wire may be disposed at one end of the second receiving tube 200. Here, one end of the second accommodating tube 200 may be sealed so that fluid does not flow into the inside.

The second fastening plate 120 and the third fastening plate 210 may include a plurality of

fastening grooves

122 and 212 formed at positions corresponding to each other. The third fastening plate 210 may be fixed to the second fastening plate 120 by a fastening member such as a bolt, a rivet or the like. And a third through hole 211 may be formed to extend to the outside of the connector 200. A first wire may be extended to the outside through the third through hole or a connector electrically connected to the first wire may be exposed to the outside.

The coil member 300 may be a cylindrical hollow coil, and may be formed of a metal such as iron, sus, or a metal alloy having excellent elasticity, heat resistance, and chemical resistance. One end of the coil member 300 is coupled to the sensor assembly 400 and the other end is coupled to one end of the second receiving tube 200. The coil member 300 extends in the longitudinal direction of the first receiving tube 100. One end of the coil member 300 may be inclined at a predetermined angle with respect to the longitudinal direction of the first accommodating tube 100 so that the sensor assembly 400 may be inclined at a predetermined angle with respect to the longitudinal direction of the first accommodating tube 100 Are arranged at an angle. The angle between one end of the coil member 300 or the longitudinal direction with respect to the sensor assembly 400 may be determined according to the structure of the path through which the sensor assembly 400 passes in order to reach the inside of the power or electric power equipment.

In one embodiment, the second connector 340 is located at the other end of the coil member 300 and may be electrically coupled to a second wire contained within the coil member 400. The second connector 340 may be coupled to the first connector 220 of the second receiving tube 200. Alternatively, the coil member 300 and the second receiving tube may be fastened (for example, without using the first connector 220, the second connector 340) A wire may extend into the coil member 300 and be electrically connected to the sensor assembly 400.

The sensor assembly 400 is inserted into the power or power equipment and measures the condition of the fluid.

Referring to FIG. 3, the sensor assembly 400 includes a sensor housing composed of a housing body 410 and a housing cover 420. The housing cover 420 may be screwed to the housing body 410. To this end, a thread is formed on the outer circumferential surface of one end of the housing cover 420, and a thread (not shown) is formed on the inner circumferential surface of one end of the housing body 410. The housing body 410 and the sensor housing cover 420 may be formed of metal. The sensor housing is coupled to one end of the coil member 400, that is, to the inclined extension 330. The sensor housing receives one or more sensor substrates 430 therein and contacts the fluid to be measured.

The housing body 410 may have a cylindrical shape, and a fluid communication hole 411 is formed in the housing body 410 so as to penetrate the outer peripheral surface and the inner peripheral surface. The plurality of fluid communication holes 411 can function to increase the contact between the sensor and the oily body.

One or more sensors that measure one or more states of the fluid are disposed on the sensor substrate 430. Here, each of the plurality of sensors may measure one or more states, for example, deterioration, temperature, moisture, level, and degree of contamination depending on the type of fluid. The measurement signal generated by the sensor may be transmitted to the outside through the first wire and / or the second wire. The sensor substrate 430 electrically connects the second wire 340 to one or more sensors.

The second electric wire 330 electrically connects the sensor substrate 430 to the signal processing device 700 located outside and transmits the measurement signal generated by the sensor to the signal processing device 700. Here, the second electric wire 330 may be waterproof coated to enhance waterproofing and insulating properties.

The path through which the sensor assembly 400 will pass to reach the interior of the power or power equipment may have a structure that changes fluid flow. For example, an "L" "type tube," "S" "type tube or globe valve has a section in which the direction of the path changes at least once in the entire path. Therefore, the coil member 300 having elasticity can not pass through the section in which the direction of the path is changed, or can pass through such section only after very delicate insertion. However, the coil member 400 whose one end is inclined is easy to change the direction in which the direction of the path changes. 4 (a) to 4 (c) illustrate one end of the coil member 400 that is inclined in various forms.

Referring to FIG. 4A, the coil member 300 may include a horizontal extension 310 and an inclined extension 330. For this purpose, any one of the plurality of coils near one end of the coil member 300 can be bent at a predetermined angle a1. 4, the distance between the horizontal extension 310 and the vertical extension 330 may be substantially the same as the inter-coil spacing of the other portion of the coil member 300, The distance between the horizontal extending portion 310 and the vertical extending portion 330 increases as viewed from the bottom.

Referring to FIG. 4 (b), the coil member 300 may include a horizontal extension 310, a curved portion 320, and an inclined extension 330. The intervals between the coils of the horizontal extension 310 and the slope extension 330 are substantially the same. In the case of the curved portion 320, the interval between the coils as viewed from above is substantially the same as the horizontal extending portion 310 or the inclined extending portion 330, but the interval between the coils as viewed from the bottom is equal to the horizontal extending portion 310 Is greater than the inter-coil spacing of the warp extensions (330). Therefore, the inclined extension 330 is inclined at a predetermined angle a1 with respect to the axial direction of the horizontal extending portion 310. [

Referring to FIG. 4C, more than two curved portions 321 may be formed to increase the angle between the inclined extension 330 and the horizontal extension 310 from a1 to a2.

At least one or a combination of the total length of the coil member 400, the length of the warp extension 330 and / or the angle between the warp extension 330 and the horizontal extension 310 is determined by the sensor assembly 400 It can be changed depending on the structure of the power or the path in the power equipment to be passed.

FIGS. 5A through 5F are views illustrating a process of entering a sensor assembly of the fluid measurement apparatus of FIG. 1 fastened to a globe valve into a power or electric equipment to make contact with a fluid. FIG.

The fluid state measurement device is coupled to either the fluid outlet port or the fluid inlet port of the power or power equipment. 5A to 5F illustrate the case where the fluid state measuring device is coupled to the globe valve 500 having the " S " ' shaped path, but this is merely an example. In a state where the disk 530 of the globe valve 500 is coupled to the fluid port 520, i.e., the lower fluid path 510 of the globe valve 500 and the upper fluid path 540 are not in fluid communication, A fluid state measurement device is coupled to the globe valve (500). The fluid state measuring device is coupled to the outlet port of the globe valve 500 by a fastening member such as, for example, bolts, rivets, or the like. When the fluid state measuring device is connected to the glove valve 500, the fluid port 520 of the globe valve 500 is opened, and the fluid flows into the first receiving pipe 100. Since the inside of the first storage tube 100 is filled with air, internal pressure may increase, resulting in a negative result such as leakage of fluid or introduction of air into the equipment. Accordingly, when the fluid port 520 is opened, the first valve 140 is opened to allow air in the first accommodation pipe 100 to be discharged to the outside.

5A, when the third fastening plate 210 is pushed toward the second fastening plate 120, the second receiving pipe 200 is inserted into the first receiving pipe 100 through the second through hole 121, Lt; / RTI > The coil member 300 coupled to one end of the second receiving tube 200 enters the lower fluid path 510 of the globe valve 500. The sensor assembly 400 coupled to one end of the coil member 300 advances to the central upper wall 511 defining the lower fluid path 510 while keeping the inclined state at a predetermined angle.

5B, when the sensor assembly 400 contacts the central upper wall 511 of the lower fluid path 510, the third fastening plate 210 is rotated clockwise by 90 degrees. When the third fastening plate 210 is rotated, the sensor assembly 400 in the lower fluid path 510 also rotates clockwise by 90 degrees. As shown in FIG. 5B, the sensor assembly 400 is allowed to advance because it no longer contacts the central upper wall 511 of the lower fluid path 510 that impedes advancement. Next, the third fastening plate 210 is pushed toward the second fastening plate 120 to advance the sensor assembly 400 to the fluid port 520.

5C, when the sensor assembly 400 reaches the bottom of the fluid port 520, the third fastening plate 210 is rotated counterclockwise by 90 degrees so that one end of the sensor assembly 400 is connected to the fluid port 520). The sensor assembly 400 is inclined at a predetermined angle by the inclined extension 330 of the coil member 300 so that at least a part of the sensor assembly 400 enters into the fluid port 520 by rotation .

5D, when one end of the sensor assembly 400 contacts the inner wall 521 of the fluid port 520, the third fastening plate 210 is pushed toward the second fastening plate 120 so that the sensor assembly 400 ) To the outside of the fluid port (520). The sensor assembly 400 is advanced to come into contact with the upper side wall 541. The sensor assembly 400 in contact with the upper side wall 541 can not advance further.

Referring to FIG. 5E, when the sensor assembly 400 contacts the upper side wall 541, the third fastening plate 210 is rotated clockwise by 90 degrees. When the third fastening plate 210 is rotated, the sensor assembly 400 in the upper fluid path 540 also rotates clockwise by 90 degrees. As shown in FIG. 5E, the sensor assembly 400 is no longer in contact with the upper sidewall 541 that impedes advancement, so that it can be advanced. At this time, the position of contact of the coil member 300 with the fluid port 520 can be changed due to the elasticity of the coil member 300, and the sensor assembly 400 includes the upper wall 540 defining the upper fluid path 540, (Not shown).

The distance d between the fluid port 520 and the disk 530 may be less than that illustrated in Figure 5d so that the sensor assembly 400 may contact the disk 530 and may not advance further . Therefore, it should be understood that Figures 5d and 5e are illustrative only to illustrate situations in which the fluid port 520 can not advance further after passing through it.

5f, when one end of the sensor assembly 400 contacts the upper wall 542 of the upper fluid path 540, the third fastening plate 210 is pushed toward the second fastening plate 120, (400) to advance fully into the power or electrical equipment. The length of the second receiving tube 200 and the coil member 300 may be determined to locate the sensor assembly 400 within the power or power equipment and when the sensor assembly 400 is positioned within the equipment, The fastening plate 120 and the third fastening plate 210 can be brought into contact with each other. On the other hand, due to the pressure of the fluid inside the equipment, the second receiving pipe 200 can be drawn out. In this case, the position of the sensor assembly 400 may be changed and a desired measurement signal may not be generated. Accordingly, the second fastening plate 120 and the third fastening plate 210 can be fixed to each other by a fastening member.

5A to 5F show a procedure for operating the third fastening plate 210 in order to arrange the sensor assembly 400 inside the equipment. Since the structure of the equipment to which the fluid state measuring apparatus is to be coupled can be known in advance, the operation procedure can be displayed outside the second receiving pipe 200. This allows the operator to properly install the fluid status measuring device even if the internal structure of the device is not known.

The operation procedure is composed of any one of a distance for drawing the second receiving tube 200 into the first receiving tube 100 and an angle for rotating the second receiving tube 200 or a combination thereof. In one embodiment, the operating sequence may be permanently displayed on the outer surface of the second receiving tube 200, for example, via printing or laser marking. On the other hand, in another embodiment, for the sake of versatility of the fluid state measuring apparatus, the operation procedure may be printed on the guide 230 and then attached to the outer surface of the second receiving tube 200. The guide 230 may be formed of paper or a synthetic resin, and may be coated to prevent contamination after the operation sequence is printed. When the same fluid state measuring apparatuses are coupled to equipment having different structures, the guide 230 for each equipment can be used to display the correct operation sequence on the second receiving pipe 200.

7A, when the position in the power or power equipment where the sensor assembly 400 is to be disposed is not distant from the gate valve 600 or there is no section in which the direction of the path is changed, the coil member 300 May be separated from the second receiving tube 200. The sensor assembly 400 may be coupled to one end of the second receiving tube 200 after the coil member 300 is separated.

The fluid state measurement device is coupled to either the fluid outlet port or the fluid inlet port of the power or power equipment. FIG. 7 illustrates the case where the fluid state measuring device is coupled to the gate valve 600 having a straight path, but this is merely an example. The fluid state measuring device is coupled to the gate valve 600 with the disk of the gate valve 600 coupled to the fluid port, i.e., the outlet port of the gate valve 600 and the inlet port are not in fluid communication. The fluid state measurement device is coupled to the outlet port of the gate valve 600 by a fastening member such as, for example, bolts, rivets, or the like.

When the fluid state measuring device is coupled to the gate valve 600, the fluid port of the gate valve 600 is opened, and the fluid flows into the first receiving pipe 100. When the fluid port of the gate valve 600 is opened, the first valve 140 is opened to allow air in the first accommodation pipe 100 to be discharged to the outside.

7 (b), when the third fastening plate 210 is pushed toward the second fastening plate 120, the second receiving pipe 200 is inserted into the first receiving pipe 120 through the second through hole 121, (Not shown). The sensor assembly 400 coupled to one end of the second storage tube 200 passes through the gate valve 600 and enters the inside of the equipment.

Referring to FIG. 7C, the length of the second receiving tube 200 may be determined to place the sensor assembly 400 in the power or power equipment, and the sensor assembly 400 may be positioned within the equipment The second fastening plate 120 and the third fastening plate 210 can be brought into contact with each other. On the other hand, due to the pressure of the fluid inside the equipment, the second receiving pipe 200 can be drawn out. In this case, the position of the sensor assembly 400 may be changed and a desired measurement signal may not be generated. Accordingly, the second fastening plate 120 and the third fastening plate 210 can be fixed to each other by a fastening member.

8A and 8B illustrate a structure in which the sensor assembly is fully inserted into a power or electric equipment and then fixed. Figs. 8A and 8B show an embodiment in which the sensor assembly is fixed using a self- Is fixed using a fastening member.

Referring to FIG. 8A, the first fastening structure is disposed on a surface of the second fastening plate 120 that is not coupled to the first receiving tube 100 on both sides. The first fastening structure includes a lower structure 123 extending longitudinally from the second fastening plate 120 and an upper structure 124 coupled to the lower structure 123, The diameter is equal to or less than the minimum diameter of the superstructure 124. Further, the length of the substructure 123 is equal to or greater than the thickness of the third fastening plate 210.

The third fastening plate 210 is formed with a plurality of fastening grooves 212 and a second fastening structure formed at one side of each fastening groove 212 and including an extending groove 213 extending in the circumferential direction from the fastening groove 212 do. The diameter of the locking groove 212 is equal to or slightly greater than the maximum diameter of the upper structure 124 and the diameter of the extending groove 213 is greater than the maximum diameter of the lower structure 123, small.

8 (b), the first fastening structure and the second fastening structure are formed at positions corresponding to each other. When the second fastening plate 120 and the third fastening plate 210 come close to each other so that the sensor assembly 400 is disposed at a predetermined position in the equipment, the upper structure 124 of the first fastening structure is fastened to the fastening structure of the second fastening structure And can pass through the groove 212. When the upper structure 124 completely passes through the engaging groove 212 and the second engaging plate 120 and the third engaging plate 210 are brought into contact with each other, the third engaging plate 210 rotates clockwise, 123 are positioned inside the extension groove 213. Accordingly, the second fastening plate 120 and the third fastening plate 210 are fixed to each other.

8 (c) shows a case where the second fastening plate 120 and the third fastening plate 210 are fixed by the fastening member. The second fastening plate 120 and the third fastening plate 210 are respectively provided with a plurality of

fastening grooves

122 and 212 and the

fastening grooves

122 and 212 are formed at positions corresponding to each other. The second fastening plate 120 and the third fastening plate 210 are fixed to each other by using bolts / nuts in a state where the second fastening plate 120 and the third fastening plate 210 are in contact with each other.

The signal processing apparatus 700 includes a housing 710, a signal processing circuit 720, and a connector 730. The housing 710 protects the signal processing circuit 720 from the external environment. The connector 730 is electrically coupled to a wire 250 extending from the fluid status measuring device or to a connector 260 coupled to the wire 250 to form a path through which the measurement signal is transmitted to the signal processing circuit 720 do. The signal processing circuit 720 can be implemented in various forms. Basically, the signal processing circuit 720 converts the analog measurement signal into a digital signal or displays the measurement signal through an analog meter (not shown) that can be externally verified. Alternatively, the signal processing circuit 720 may transmit the digital signal to a server (not shown) located remotely via wired or wireless communication.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

It is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. .

Claims

A first receiving tube;

A first fastening plate coupled to one end of the first receiving tube and having a first through hole at a position where the first receiving tube is coupled;

A second receiving tube extending in the longitudinal direction of the first receiving tube and receiving a first wire therein;

A coil member coupled to one end of the second receiving tube and having a second end electrically coupled to the first wire, the coil member extending in a longitudinal direction of the first receiving tube;

A sensor assembly coupled to one end of the coil member for measuring the state of the fluid, the sensor assembly being electrically coupled to the second wire;

A second fastening plate coupled to the other end of the first accommodating tube and having a second through hole at a position where the first accommodating tube is coupled with the second accommodating tube so that the second accommodating tube can be inserted into or out of the first accommodating tube, ; And

And a third fastening plate coupled to the other end of the second receiving tube.
[2] The apparatus according to claim 1,

A horizontal extension extending horizontally from one end of the coil member to the other end of the coil member; And

And an inclined extension portion extending obliquely from the horizontal extending portion to one end of the coil member.
[3] The apparatus according to claim 2,

And a curved portion connecting the horizontal extension portion and the slant extension portion.
The fluid state measurement device according to claim 1, wherein the coil member is a cylindrical hollow shape formed of a metal or a metal alloy.
The fluid state measurement device according to claim 1, wherein at least one of a distance by which the second receiving tube is drawn and an angle by which the second receiving tube is rotated is displayed on an outer surface of the second receiving tube.
A first receiving tube;

A first fastening plate coupled to one end of the first receiving tube and having a first through hole at a position where the first receiving tube is coupled;

A second receiving tube extending in the longitudinal direction of the first receiving tube and receiving a wire therein;

A sensor assembly coupled to one end of the second receiving tube for measuring the state of the fluid and electrically coupled to the electric wire;

A second fastening plate coupled to the other end of the first accommodating tube and having a second through hole at a position where the first accommodating tube is coupled with the second accommodating tube so that the second accommodating tube can be inserted into or out of the first accommodating tube, ; And

And a third fastening plate coupled to the other end of the second receiving tube.
The method according to claim 1 or 6,

Further comprising a valve in fluid communication with an outer surface of said first receiving tube.
The method according to claim 1 or 6,

And a sealing member located inside the first receiving tube and sealing the fluid introduced into the first receiving tube so as not to flow out to the outside.
The method according to claim 1 or 6,

And the first through-hole is formed at a position spaced apart from the center of the first fastening plate.
The method according to claim 1 or 6,

And the third fastening plate can be fixed to the second fastening plate.
The method according to claim 1 or 6,

The sensor assembly includes:

A sensor housing having a through hole for fluid inflow; And

And a sensor disposed inside the sensor housing for measuring a state of the fluid to generate a measurement signal and outputting the measurement signal to the second electric wire electrically connected.
The method according to claim 1 or 6,

Further comprising a signal processing device electrically coupled to the first wire extending from the third fastening plate and receiving a measurement signal generated in the sensor assembly.