KR101806660B1 - Plant pipe displacement measuring apparatus - Google Patents

Plant pipe displacement measuring apparatus Download PDF

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Publication number
KR101806660B1
KR101806660B1 KR1020160009539A KR20160009539A KR101806660B1 KR 101806660 B1 KR101806660 B1 KR 101806660B1 KR 1020160009539 A KR1020160009539 A KR 1020160009539A KR 20160009539 A KR20160009539 A KR 20160009539A KR 101806660 B1 KR101806660 B1 KR 101806660B1
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KR
South Korea
Prior art keywords
wire
case
displacement
plant
movement
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KR1020160009539A
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Korean (ko)
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KR20170089291A (en
Inventor
김근유
김영길
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두산중공업 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
    • G01B5/025—Measuring of circumference; Measuring length of ring-shaped articles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

An apparatus for measuring displacement of a plant pipeline is disclosed.

Description

[0001] The present invention relates to a plant pipe displacement measuring apparatus,

The present invention relates to a method for predicting a displacement caused by a thermal expansion due to a high temperature fluid which is used as a plant piping, To a displacement measuring apparatus for a plant piping.

Generally, a plant refers to an industry that supplies plants or equipment that can produce products such as electric power, gas, and fresh water, and devices or plant facilities that produce raw materials or energy to produce energy, The facility is a complex structure of many important facilities in a large space.

Since many of the domestic plant facilities are obsolete, it is urgent to make decisions on disposal, repair and replacement of facilities. Therefore, plant facilities need continuous monitoring and management. They need to find the location of the plant quickly against the breakdown and damage of the plant equipment, and to respond as quickly as possible. It is necessary to collect vast amounts of data, process, analyze, A display function is required.

In particular, nuclear power plants, power plants, combined-cycle power plants, hydro-power plants, and wind power plants are required to perform preventive maintenance regularly in case of major facilities, and to respond promptly in the event of a serious situation such as radioactive spills or emergency stoppage of power plants.

However, in the prior art, the surveillance monitors were monitoring the operations of a large number of monitoring devices functioning in the plant structure, and it was necessary to concentrate a large amount of time in confirming a number of individual measurement devices with a human eye. It was difficult to observe the abnormality of the plant facilities while monitors were monitoring many measurement instruments.

Rather than checking whether the plant equipment is abnormal or not, it is necessary to monitor the measurement equipment immediately before the occurrence of the abnormality of the plant equipment or to check the abnormality of the plant equipment In case of an emergency or disaster, it is impossible to quickly and accurately take measures and countermeasures, resulting in a huge economic and social loss cost.

Korean Patent No. 10-1191797

Embodiments of the present invention provide a device for measuring displacement of a plant pipeline that can predict the behavior of the plant piping due to the displacement of the plant piping by a simple mechanism structure instead of a complicated structure through various sensors in order to measure the displacement of the existing plant piping do.

The apparatus for measuring the displacement of a plant piping according to the second embodiment of the present invention has one end connected to a plant piping in which shrinkage or expansion occurs depending on the temperature of the fluid and the other end extending outward, A wire moved by displacement according to the behavior; A length adjuster connected to the end of the wire so that the wire is moved in the longitudinal direction in accordance with the displacement of movement of the plant piping in the upward and downward directions; A case in which the length adjuster is accommodated; And a displacement measuring unit provided on the inside of the case and moved together with the wire in accordance with the movement of the plant piping in the forward, backward, left and right directions, wherein the displacement measuring unit A pair of spacing plates spaced apart from each other by a predetermined distance, and a position shifting plate interposed between the spacing plates so as to be movable in front, rear, left, and right directions, .

Wherein the length adjuster comprises: a rotating shaft having a lengthwise end portion rotatably inserted in a transverse direction of an inner side of the case; A winding portion provided at the center of the rotary shaft and having an extended end portion of the wire wound; And a first elastic part inserted in the rotation shaft and generating a rotational force to rotate the rotation shaft in a direction opposite to the rotation direction of the winding part by an elastic restoring force.

The winding portion includes a pair of winding plates inserted into the rotating shaft and formed at a first diameter, and the winding plates are kept spaced apart from each other.

And the winding plate is located at an inner center of the case.

The winding plate is provided with a vertical length display portion having a length corresponding to a displacement of the wire in the vertical direction in the radial direction of the facing surface facing the inner side of the case.

And the first elastic portion is a coil spring inserted into the rotation shaft.

The rotation axis is horizontally positioned at a distance equal to the radius of the winding section at the center of the case, and the wire wound around the winding section extends in the vertical direction or the vertical direction .

The case has an opening hole opened at a position corresponding to the winding section and opened to allow a worker to visually confirm the length of the wire in the vertical direction in the longitudinal direction.

The position shifting plate is characterized in that a light weight material is used.

And a second elastic portion for holding the reference position of the position shifter so that the position shifter is positioned at the center of the center of the case before the position shifter is moved by the wire, .

The second elastic part is selectively compressed by the position shifting plate and a sponge whose initial shape is maintained by the elastic restoring force when the position shifting plate is positioned at the center of the position is used.

The case is characterized in that either a circular shape or a polygonal shape is selectively used.

The displacement measuring unit is provided at a lower side of the position shifting plate and is connected to the movement of the wire moved together with the movement displacement generated in the forward and backward directions due to the thermal expansion of the plant piping, 1 extension; And a second extension portion extending perpendicularly to the same plane as the first extension portion and extending toward a side surface of the case and being moved together with the wire according to a movement displacement generated in a lateral direction of the plant pipe.

And a slot hole is formed in the case at a position corresponding to a section corresponding to a displacement of the first and second extensions.

The case is provided with a scale on the outer surface of the slot hole to indicate a displacement of the first and second extended portions in accordance with the movement of the first and second extended portions.

The apparatus for measuring the displacement of a plant piping according to the second embodiment of the present invention has one end connected to a plant piping in which shrinkage or expansion occurs depending on the temperature of the fluid and the other end extending outward, A wire moved by a behavior; A magnet disposed at an end of the wire extending toward the plant piping; A length adjuster connected to an end of the wire for movement in a longitudinal direction of the wire which is moved together with the movement displacement of the plant piping in the upward and downward directions; A case in which the length adjuster is accommodated; And a displacement measuring unit provided inside the case and interlocking with the wire moved together with the movement of the plant piping in the longitudinal and lateral directions.

The embodiments of the present invention can easily measure the displacement of the plant pipe due to the thermal expansion due to the abnormal stiffness so that the displacement of the plant pipe can be easily measured without particularly attaching a complicated sensor or device .

Embodiments of the present invention are inexpensive and can confirm the abnormal behavior of the plant pipeline with the naked eye and can be easily installed even in a small space so that utilization is improved and the system is not operated by electromagnetic wave or power supply, Can be used stably.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a displacement measuring device of a plant piping according to a first embodiment of the present invention; Fig.
2 is a perspective view illustrating a length adjuster included in a displacement measuring apparatus of a plant piping according to an embodiment of the present invention;
3 is a side view showing a winding unit according to an embodiment of the present invention;
4 is a longitudinal sectional view showing a displacement measuring unit of a plant piping according to an embodiment of the present invention;
5 illustrates a first extension according to an embodiment of the present invention.
6 is a diagram showing a state in which a plant piping according to an embodiment of the present invention is displaced in an abnormal direction in a vertical direction;
7 is a view illustrating an angle meter according to an embodiment of the present invention.
8 is a diagram showing a state of abnormal behavior displacement generated in a lateral direction of a plant piping according to an embodiment of the present invention.
9 is a view schematically showing a rotating part according to an embodiment of the present invention.
10 is a perspective view showing a device for measuring displacement of a plant piping according to a second embodiment of the present invention.

A configuration of a displacement measuring apparatus for a plant piping according to a first embodiment of the present invention will be described with reference to the drawings.

1 to 3, the apparatus for measuring the displacement of a plant piping according to the first embodiment of the present invention is a device for measuring the displacement of a plant piping 2 provided in a plant facility by means of a high- And it is an invention for measuring the displacement of movement according to the movement in a simple mechanism configuration when it occurs.

The plant piping 2 provided in the plant facility is used for various purposes, for example, a water supply pipe of a boiler or a steam piping. The water supply pipe of the boiler moves through the plant piping 2 at a high temperature of about 300 ° C. In this case, the water supply pipe receives the high temperature and thermal expansion may occur in the axial direction.

It is normal for the water pipe to generate thermal expansion according to the temperature of the moving fluid, but if it is out of the normal range, it should be recognized by the operator or manager in advance and take necessary measures for safety.

The present invention is characterized in that one end is connected to a plant pipe 2 in which shrinkage or expansion is generated according to the temperature of a high temperature fluid and the other end is extended outwardly to cause an abnormal behavior due to thermal expansion of the plant pipe 2 The extent to which the wire 10 is moved by displacement can be measured in length. For reference, the plant piping 4 is stably supported through the support member 4.

For example, it is possible to measure the displacement in accordance with the abnormal behavior in the vertical direction or the vertical direction of the plant piping 2, the displacement in accordance with the abnormal behavior in the left or right direction or the displacement in accordance with the abnormal behavior in the back- (2).

For this purpose, the present invention is connected to the end of the wire (10) so that the wire (10) is moved in the longitudinal direction in accordance with the displacement of movement of the plant pipe (2) A case 200 in which the length adjuster 100 is accommodated and a case 200 which is provided inside the case 200 and which is movable in the longitudinal and lateral directions of the plant pipe 2, And a displacement measuring unit 300 that is moved together with the displacement measuring unit 300.

It is preferable that the end of the wire 10 extending from the case 200 is fixed to the clamp 3 provided on the upper surface of the plant pipeline 2, but if it can be stably fixed to another position, And can be fixed at various positions.

The length adjusting unit 100 may be configured such that when the wire 10 fixed to the plant pipe 2 is moved in the upward and downward directions in accordance with the abnormal displacement due to the thermal deformation of the plant pipe 2, And is provided for adjusting the length.

The length adjuster 100 includes a rotating shaft 110 rotatably inserted into the casing 200 in the lengthwise direction of the inside of the case 200 in the transverse direction, And a rotating force that is inserted into the rotating shaft 110 and rotates the rotating shaft 110 in a direction opposite to the rotating direction of the winding unit 120 is generated by an elastic restoring force And the first elastic portion 130 is formed.

The rotating shaft 110 has a winding portion 120 at its center and the first elastic portion 130 is provided on the left and right sides with respect to the winding portion 120.

The rotary shaft 110 is formed of a round bar having a predetermined diameter and is formed in a disk shape so that both side ends thereof are supported inside the case 200.

Although the winding unit 120 can be configured in various forms, the present embodiment will be described as an embodiment in which the structure and manufacture are easiest. The winding unit 120 is formed in the form of a disk and is formed by a pair of two, and is inserted into the center of the rotation shaft 110, respectively.

The winding unit 120 includes a pair of winding plates 122a and 122b formed at a first diameter, and the winding plates 122a and 122b are kept apart from each other. The winding plates 122a and 122b are maintained in a state in which the wire 10 is wound a plurality of times in a region corresponding to the spacing distance.

Since the winding plates 122a and 122b are located at the center of the inner side of the case 200, the state where the wire 10 is positioned at the center without being deviated in any one direction of the left or right is stably maintained.

A vertical length display part 123 is provided on the winding plates 122a and 122b in a radial direction of the facing surface of the case 200 facing the inner side of the case 200 and a length corresponding to the displacement of the wire 10 in the vertical direction.

The vertical length display unit 123 determines whether the current plant pipeline 2 is in a normal position (first installed position) by checking the length displacement caused by the movement of the wire in the vertical or vertical direction with the naked eye .

For example, in a state in which no displacement is generated after the plant pipe 2 is initially installed, displacement of the moving length in the vertical direction is not generated since the wire 10 does not generate displacement in the vertical direction.

When the plant piping 2 is moved forward in the axial direction due to thermal expansion, the wire 10 is stretched in the longitudinal direction and the winding plates 122a and 122b on which the wire 10 is wound are wound on the wire 10 is rotated n times in the initial position while being rotated in the increased direction.

That is, the vertical length of the wire 10 displayed on the initial vertical length display unit 123 is 1000 millimeters. The wire 10 has a vertical length of 1000 millimeters to 1100 millimeters by the winding plates 122a and 122b rotated together with the movement of the wire 10. [ Lt; / RTI > In this case, it can be seen that the displacement of the wire 10 in the vertical direction is 100 millimeters.

The first elastic part 130 may be a coil spring inserted into the rotary shaft 110. In this case, when one end of the coil spring is fixed to the rotary shaft 110 of the coil spring and the other end is fixed to the case 200, The wire 10 can be always moved to the initial position by generating an elastic restoring force in a direction opposite to the rotation direction of the wire 10.

In this case, an abnormal displacement occurs in the axial direction of the plant piping 2, and the rotating shaft 110 is easily returned to its original position according to the displacement of the wire 10 in the longitudinal direction.

The rotation axis 110 is horizontally positioned at a distance equal to the radius of the winding unit 120 from the center of the case 200 and the wire 10 wound around the winding unit 120 is positioned in the case 200 in the vertical direction or in the vertical direction.

Although the case 200 according to an embodiment of the present invention is shown in the form of a rectangular parallelepiped, it can be changed into a circular column shape or another polygonal shape, and is not particularly limited to the shape shown in the drawings.

The case 200 may be made of transparent acrylic so that the wire 10, the length adjusting unit 100, and the displacement measuring unit 300 located inside can be visually recognized. In this case, the worker can grasp the movement state of the wire 10 more accurately, and the accuracy according to the abnormal behavior displacement of the plant pipe 2 is improved.

An opening hole 202 is formed in the case 200 to allow a worker to visually confirm the length of the wire 10, which is open at a position corresponding to the winding unit 120 and is in a vertical direction in the longitudinal direction of the wire 10 do. The opening hole 202 is opened to confirm the scale indicated on the vertical length display part 123 and the shape and structure may be changed to the shape shown in the figure or another form.

A displacement measuring unit according to an embodiment of the present invention will be described.

Referring to FIGS. 1 and 4, the displacement measuring unit 300 includes a pair of spacing plates 312 and 314 spaced apart from each other in a vertically downward direction in an inner lower portion of the case 200, A position shifting plate 316 which is interposed between the spacing plates 312 and 314 so as to be movable in the forward, backward, left and right directions and in which an insertion hole 315 is formed at the center of the wire 10, .

The separating plates 315 and 316 may be fixed to the inside of the case 200 or may have separate ribs (not shown) for fixing the separating plates 315 and 316, Do not.

The spacing plates 315 and 316 are configured in a manner similar to the cross-sectional shape of the case 200, for example, and have a central opening. The spacing plates 315 and 316 are disposed so as to face each other vertically, and the moving plate 315 is disposed between them.

The position shifting plate 315 is relatively larger than the opening size of the spacing plates 315 and 316 but is relatively smaller than the size corresponding to the cross section of the case 200. [

The positioning plate 315 is formed with an insertion hole 315 through which the wire 10 passes and is easily moved in the left-right direction or the back-and-forth direction in association with the movement of the wire 10.

Since the light guide plate 315 is made of a lightweight material so that it can be easily moved by the wire 10, the wire 10 can be stably interlocked and moved in any direction. Therefore, when displacement occurs due to abnormal behavior due to thermal expansion in the plant piping 2, it is possible to easily measure the changed length.

The positioning plate 315 should be positioned at the center of the inner side of the case 200 along with the stable movement of the wire 10 along the initial position. The present invention is so arranged that the position shifting plate 315 is positioned between the position shifting plate 315 and the inner side of the case 200 opposite to the side face at a predetermined center position before being moved by the wire 10 And a second elastic portion 340 for maintaining the reference position of the position shifting plate 316.

The second elastic portion 340 is selectively compressed by the position shifting plate 316. When the position shifting plate 316 is positioned at the center of the first elastic portion 340, Is used.

The sponge is resiliently compressively deformed only when the position shifting plate 316 is moved and when the plant piping 2 is not subjected to abnormal behavior in the axial direction, the position shifting plate 316 is always positioned at the center State is maintained. The initial position of the position shifting plate 316 corresponds to the center of the case 200, and the position corresponds to the zero point position.

1, the second elastic part 340 is temporarily elastically compressed even when the position shifting plate 316 is moved in either the forward or backward direction or the left or right direction of the case 200, The position shifting plate 316 can be positioned at the initial mounting position.

Accordingly, the operator can easily position the position shifting plate 316 in the center of the case 200, so that the displacement of the plant piping 2 can be accurately measured.

The displacement measuring unit 300 is disposed below the position shifting plate 316 and is moved together with the movement displacement generated in the forward and backward directions due to the thermal expansion of the plant piping 2. [

More specifically, the displacement measuring unit 300 includes a first extension 310 extending toward the front of the case 200 in cooperation with movement of the wire 10, And a second extension portion (not shown) extending along the side of the case 200 and being moved together with the wire 10 in accordance with the movement displacement generated in the lateral direction of the plant pipe 2 320).

The first and second extension portions 310 and 320 are configured to indicate displacement due to the movement of the wire 10 moving in conjunction with the plant piping 2, As shown in Fig.

The first extension 310 extends toward the front of the case 200. In this case, when a displacement occurs due to an abnormal behavior of the plant piping 2 in the lateral direction, 316).

The second extension portion 320 extends toward the right side of the side surface of the case 200. In this case, when the displacement occurs due to abnormal behavior in the axial direction of the plant piping 2, The length of the abnormal behavior of the plant piping 2 can be grasped accurately.

The first and second extensions 310 and 320 are pointed toward the outer side of the case 200 and are accurately positioned toward the scale 201 to be described later.

Therefore, the operator can accurately determine whether the plant pipeline 2 is in the normal state or the non-normal state.

Referring to FIGS. 1 and 5, the case 200 is formed with a slot hole 210, which is open at a position corresponding to a section corresponding to the displacement of the first and second extensions 310 and 320. The slot hole 210 is formed in an open state in the case 200, and the shape of the slot hole 210 may be changed in other forms than those shown in the drawings.

The case 200 is formed with a scale 201 on the outer side of the slot hole 210 to indicate displacement of the first and second extension parts 310 and 320 as the position of the first and second extension parts 310 and 320 moves.

The scale 201 is coated or contained with a luminous paint so that it can be visually recognized even at night or in a dark place, so that the operator can accurately grasp the current state of the plant piping 2.

6, when the plant piping 2 is displaced due to abnormal behavior in the vertical direction, the wire 10 is moved in the longitudinal direction and is wound by the winding section 120 described above, The length is adjusted as it is released. In this case, the displacement measuring unit 300 rotates only the rotating shaft 110 in a fixed position, and the first elastic part 130 is compressed or decompressed in the axial direction of the rotating shaft 110.

Referring to FIG. 7, according to the first embodiment of the present invention, when the displacement of the plant pipeline 2 is shifted according to abnormal behavior in the axial direction, the angle meter 30 located inside the case 200 It is possible to measure the angle with the movement of the wire 10 at present.

The angle measuring instrument 30 is a conventional angle measuring instrument formed in a semicircular shape, and the angle measuring instrument 30 is positioned inside the case 200. The angle measuring device 30 may be installed on the inner front surface and the side surface of the case 200, and is not limited to the illustrated position.

Referring to FIG. 8, when the plant piping 2 is displaced in the right direction as viewed from the drawing, the wire 10 is moved from a thin solid line position to a thick solid line position. In this case, the displaced displacement of the wire 10 can be easily confirmed by the angle measuring device 30 described above.

Referring to FIG. 9, according to the first embodiment of the present invention, the case 200 is provided with the rotation part 500 on the lower side. The rotation unit 500 is provided to easily rotate the case 200 toward the clockwise or counterclockwise direction. The rotation unit 500 includes a pedestal 510 positioned on the upper surface of the frame structure or the frame structure on which the case 200 is mounted, And a bearing portion 520 positioned at an upper end of the pedestal 510.

The bearing portion 520 is selectively detachably coupled to the bearing mounting portion 250 provided below the case 200. The case 200 can be rotated clockwise or counterclockwise by the rotation unit 500, so that the case 200 can be easily positioned at a specific position.

A displacement measuring apparatus for a plant piping according to a second embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 10, one end is connected to the plant piping 2 where shrinkage or expansion is generated according to the temperature of the fluid, and the other end is extended outward to cause an abnormal behavior due to thermal expansion of the plant piping 2 A magnet 400 provided at an end of the wire 10 extending toward the plant piping 2 and a moving displacement mechanism for moving the plant piping 2 in the upward and downward directions, A length adjusting unit 100 connected to the end of the wire 10 for movement in the longitudinal direction of the wire 10 moved together with the case 100 and a case 200 in which the length adjusting unit 100 is accommodated, And a displacement measuring unit 300 disposed inside the case 200 and interlocking with the wire 10 moved together with the plant piping 2 in the longitudinal and lateral directions.

This embodiment will be described only for the magnet 400 because the main configuration described in the above embodiment is similar.

Since the magnet 400 is made of a magnet, it can be easily attached to any part made of a steel material, and workability of the operator is improved. The magnet 400 has a ring (not shown) to which the end portion of the wire is coupled, and is easily coupled to the upper surface of the magnet 400.

If the plant piping 2 is a base metal which is difficult to attach to the magnet 400, the extended lower end of the wire 2 may be formed in an annular shape and coupled to the clamp 3 for easy attachment.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

2: Plant piping
10: Wire
100:
110:
120:
122a, 122b:
123: Vertical length display unit
130: first elastic portion
200: Case
202: opening hole
300: displacement measuring unit
310: first extension
320: second extension part
312, 314:
315: insertion hole
316: Position shifting plate
340: second elastic portion
400: Magnet

Claims (17)

A wire connected to one end of a plant pipe in which shrinkage or expansion occurs depending on a temperature of the fluid and the other end extending outward and moved by displacement according to an abnormal behavior due to thermal expansion of the plant pipe;
A length adjuster connected to the end of the wire so that the wire is moved in the longitudinal direction in accordance with the displacement of movement of the plant piping in the upward and downward directions;
A case in which the length adjuster is accommodated; And
And a displacement measuring unit provided inside the case and moved together with the wire in association with the movement of the plant piping in the longitudinal and lateral directions,
Wherein the displacement measuring unit includes a pair of spacing plates spaced apart from each other in a vertical direction in an inner lower portion of the case and a separator interposed between the spacing plates so as to be movable in forward, And a position shifting plate having an insertion hole formed at the center thereof so as to insert the wire. The method according to claim 1,
The length-
A rotary shaft in which a lengthwise end portion of the inner side of the case is rotatably inserted in a lateral direction;
A winding portion provided at the center of the rotary shaft and having an extended end portion of the wire wound;
And a first elastic part inserted in the rotary shaft and generating a rotational force for rotating the rotary shaft in an opposite direction to the rotational direction of the winder, by an elastic restoring force. 3. The method of claim 2,
The winding unit
And a pair of winding plates inserted into the rotating shaft and formed of a first diameter, wherein the winding plates are kept spaced apart from each other. The method of claim 3,
The take-
Wherein the displacement measuring device is located at an inner center of the case. The method of claim 3,
In the winding plate,
Wherein a vertical length display portion is provided in a radial direction of an opposing surface of the case facing the inner surface, the length of which is indicated by a length of the wire in accordance with a vertical movement displacement. 3. The method of claim 2,
The first elastic portion
And a coil spring inserted into the rotary shaft. 3. The method of claim 2,
The rotation shaft
The wire wound around the winding portion extends in a direction perpendicular to the center of the case. The wire wound around the winding portion is horizontally spaced from the center of the case by a distance corresponding to the radius of the winding portion And a displacement measuring device for measuring the displacement of the plant piping. 3. The method of claim 2,
In the case,
Wherein an opening hole is formed at an opening corresponding to the winding section and opened to allow the operator to visually confirm the length of the wire in the vertical direction in the longitudinal direction. delete The method according to claim 1,
Wherein the locating plate comprises:
Wherein a lightweight material is used. The method according to claim 1,
And a second elastic portion is provided between the position shifting plate and the inner side of the case facing the side surface to maintain the reference position of the position shifting plate so that the position shifting plate is positioned at the center of the center before being moved by the wire And a displacement measuring device for measuring the displacement of the plant piping. 12. The method of claim 11,
The second elastic portion
Wherein a sponge that is selectively compressed by the position shifting plate and whose original shape is maintained by an elastic restoring force when the position shifting plate is located at the center of the center is used. The method according to claim 1,
In this case,
Wherein either one of a circular shape and a polygonal shape is selectively used. The method according to claim 1,
Wherein the displacement measuring unit comprises:
A first extension part provided below the position shifting plate and extending toward the front face of the case in cooperation with movement of the wire moved together with the movement displacement generated in the forward and backward direction due to thermal expansion of the plant piping;
A displacement of the plant piping including a second extension extending perpendicularly to the first extension and perpendicular to the first extension and extending toward the side of the case and being moved with the wire in accordance with the displacement generated in the lateral direction of the plant piping Measuring device. 15. The method of claim 14,
In the case,
And a slot hole is formed at a position corresponding to a section corresponding to the displacement of the first and second extension portions. 16. The method of claim 15,
In this case,
And a scale is provided on the outer surface of the slot hole to indicate a displacement of the first and second extensions according to the movement of the first and second extensions. A wire connected at one end to a plant pipe where shrinkage or expansion occurs depending on the temperature of the fluid and moved at the other end by an abnormal behavior due to thermal expansion of the plant pipe;
A magnet disposed at an end of the wire extending toward the plant piping;
A length adjuster connected to an end of the wire for movement in a longitudinal direction of the wire which is moved together with the movement displacement of the plant piping in the upward and downward directions;
A case in which the length adjuster is accommodated; And
And a displacement measuring unit provided on the inside of the case and interlocking with the wire moved together with the movement of the plant piping in the longitudinal and lateral directions.







KR1020160009539A 2016-01-26 2016-01-26 Plant pipe displacement measuring apparatus KR101806660B1 (en)

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KR20170089291A KR20170089291A (en) 2017-08-03
KR101806660B1 true KR101806660B1 (en) 2017-12-07

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