KR101371259B1 - An equipment for operator's check and console to inner barrel gap of boiler feeder water main pump - Google Patents

Abstract

The present invention relates to an inspecting and adjusting apparatus for an inner barrel gap in the main water supply pump of a boiler which quickly and accurately measures a gap between an inner fixing body and a rotor in the main water supply pump of the boiler, accurately and easily adjusts the gap, and accurately tightens a flange bolt according to a nominal torque so that work efficiency can be largely improved by quickly finishing all of measuring and adjusting works for the gap in one process without damaging the parts in the process. Hence, the apparatus can be operated with high operation efficiency for a long time without the generation of the interruption of the rotor during the operation of the pump, and, as a result, generation rejection in a power plant can be prevented beforehand. According to the present invention, the apparatus comprises: a plate-shaped base having multiple legs at the lower side thereof; a barrel supporting part mounted on the intermediate part of the upper side of the base to support the inner fixing body assembly of the pump, and having a structure capable of being operated in all directions; rotor gap adjusting parts mounted on both ends of the upper side of the base respectively, fixing the rotor, and adjusting the gap by moving the rotor in all directions while fixed to the rotor; and a digital measuring instrument having a sensor detachably attached to the outer circumferential surface of the upper side of the fixed rotor and measuring the gap; and a display part displaying the value of the measured gap.

Description

Inner barrel gap check and adjustment device of boiler main feed pump {An equipment for operator's check and console to inner barrel gap of boiler feeder water main pump}

The present invention relates to a device for checking and adjusting the inner barrel clearance of a boiler main feed pump, and more particularly, to an inner barrel (hereinafter, referred to as an 'internal fixture') of components of a boiler main feed pump included in a power generation facility. Inner barrel clearance checking and adjusting device of boiler main water pump, which has a structure that checks and adjusts the gap between inner surface and impeller (hereinafter referred to as 'rotating body') precisely and tightens flange bolt to specified torque. It is about.

In general, the boiler main feed water pump of a power plant uses a multi-stage centrifugal pump, and the main feed water pump pressurizes the degassed water from the deaerator to supply the boiler. The operational reliability of the installation must be very high.

Therefore, during the inspection and maintenance of the main water pump, the clearance between the internal fixture of the pump and the rotor is checked. Before installing the internal fixture directly on the outer casing, tighten the flange bolt of the internal fixture to the specified torque. The gap between the stagnation and the rotating body is measured, and if the measured gap is poor, the internal fixing body and the rotating body are disassembled and reworked and adjusted. This gap inspection and adjustment work is performed by tightening the flange bolt of the internal fixing body to the specified torque to assemble it firmly and accurately. In order to minimize the deterioration of the efficiency, it is very important for the operation of the feed water pump.

Conventional methods for checking and adjusting gaps include placing a flat plate on a flat bottom, installing a chain block on top of the plate, and then placing the internal fixture assembly in the appropriate position of the plate and then the internal fixture assembly. In order to prevent the flow of the chock clamps on both sides of the internal fixture assembly, and then using a gap gauge to measure the gap between the internal fixture and the rotating body. More specifically, the internal fixture flange bolts are tightened according to the prescribed torque, and then the rotor is connected to the chain of the chain block and the rotor is floated little by little to measure the vertical movement of the rotor by using a clearance measuring device. The rotor clearance is measured and confirmed.

However, the conventional gap measurement and adjustment method as described above causes the rotor to float by using a chain block, so that the rotor does not move horizontally and burns like a seesaw, so there is no accuracy and excessive movement of the internal parts of the internal fixture. As the parts are damaged due to the collision, the gap measurement and adjustment work must be carried out again after replacing the damaged parts. As a result, the efficiency of work is significantly reduced due to frequent rework as well as the cost increase due to the replacement of parts. In the unstable state, the tightening work of the inner fixture flange bolt cannot be tightened correctly according to the specified torque, and the measurement and adjustment work is performed in the unstable fixation of the inner fixture so Interference of the pump rotor during operation of the pump due to the impossibility of measuring the gap This is the equipment failure caused by fixing there is a problem that the developed gambal situation may result.

The present invention has been made in view of the above conventional problems, the object of which is to quickly and accurately measure the gap between the internal fixture and the rotor of the boiler main feed water pump, it is possible to accurately and easily perform the gap adjustment Of course, the flange bolts can be tightened precisely according to the specified torque, so that all the measurement and adjustment work can be completed quickly with only one operation without damage to the parts. It is possible to provide a long period of operation with high operating efficiency without interference of the rotating rotor, thereby providing an inner barrel clearance inspection and adjustment device of the boiler main feed water pump that can prevent power generation deterioration in advance.

The object of the present invention is a flat plate, the base having a plurality of legs in the bottom; A barrel support having a structure that can be moved back and forth and left and right, and mounted on the upper middle portion of the base to support the internal fixture assembly of the pump; A rotating body gap adjusting unit mounted at both end portions of the upper surface of the base to fix the rotating body, and to adjust the gap by moving the rotating body up, down, front, and left in a fixed state with the rotating body; Inner barrel clearance inspection and adjustment device of the boiler main water pump comprising a sensor that is detachably attached to the upper outer peripheral surface of the fixed rotating body to measure the gap, and a digital measuring unit having a display unit for displaying the measured value. It can be achieved by.

The inner barrel clearance inspection and adjustment device of the boiler main feed water pump according to the present invention can accurately and quickly and accurately adjust the gap between the inner surface of the inner barrel and the impeller of the components of the boiler main feed water pump included in the power plant. As the gap measurement and adjustment work maximizes the work efficiency, the precise gap adjustment has the effect of being able to operate for a long time with high operating efficiency without the interference of the rotating body during the operation of the pump.

1 is a state diagram showing the use state of the inner barrel clearance inspection and adjustment device of the boiler main feed water pump according to the present invention,
2 is a partially enlarged view illustrating an enlarged barrel support unit of the inner barrel clearance inspection and adjustment device of the boiler main water pump according to the present invention;
3 is a partially enlarged view illustrating an enlarged rotating body gap adjusting unit of the inner barrel gap checking and adjusting device of the boiler main water pump according to the present invention;
4 is a front view showing a rotating body support part of the rotating body clearance adjusting unit of the inner barrel gap checking and adjusting device of the boiler main water supply pump according to the present invention,
5 is a cross-sectional view illustrating an operating state of the shaft operating unit of the rotating body clearance adjusting unit of the inner barrel clearance checking and adjusting device of the boiler main water supply pump according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the inner barrel clearance inspection and adjustment device of the boiler main feed water pump according to the present invention.

Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

Referring to Figure 1, the inner barrel clearance inspection and adjustment device 10 of the boiler main feed water pump according to the present invention is the base 20, the barrel support portion 30, the rotating body clearance adjustment portion 40, a digital measuring instrument It consists of 50.

The base 20 is a flat plate, and has a plurality of legs 21 at the bottom, and two shaft actuating holes 22 formed perpendicularly to the upper surface, and each of the plurality of legs 21 has a lower end surface. It is provided with a height adjusting unit (21a) for adjusting the height.

The barrel support part 30 has a structure capable of front and rear, left and right operation, and is mounted on an upper middle portion of the base 20 to support the internal fixing assembly 100 of the pump, and includes two rails having assembly protrusions ( 31a) is provided parallel to the upper surface, and assembled to the first operating plate 31 fixed on the base 20, the lower surface, the rail 31a of the first operating plate 31 so as to slide. Two rails 32a having assembling grooves to be parallel to each other, an upper surface having an assembling protrusion, two rails 32b perpendicular to the rails 32a parallel to each other, and the first operating plate The second operation plate 32 laminated on the 31 and sliding along the rail 31a of the first operation plate 31 and the lower surface of the rail 32b of the second operation plate 32. And two rails 33a having assembly grooves assembled to be slidably in parallel, and having a support block 33b mounted at the center of the upper surface thereof. And, it is composed of a third operation plate 33 which is laminated and assembled on the second operation plate 32 to slide along the rail 32b of the second operation plate 32.

The assembling protrusions of the rails 31a and 32b of the first and second operating plates 31 and 32 are dovetail protrusions, and the rails 32a of the second and third operating plates 32 and 33 ( The assembling groove of 33a) is a dovetail groove.

The support block 33b is formed with a cross section 33b-1 having an upper surface cut into a V shape.

The rotating body clearance adjusting unit 40 is mounted on both ends of the upper surface of the base 20 to fix the rotating body 101, and the rotating body (up and down, front and rear and left and right in a state fixed with the rotating body 101) By adjusting the gap by moving 101, the shaft operation unit 41 mounted on each shaft operation hole 22 of the base 20 and the shaft operation hole of the base 20 at the center of the lower surface thereof. (22) and the support shaft 42a which is located on one axis with the shaft operation unit 41, and is vertically raised and lowered according to the operation of the shaft operation unit 41, and two rails having an assembly protrusion on the upper surface. Two rails 43a each having a first operation plate 42 having parallel to each other 42b, and an assembly groove on the lower surface thereof, which is assembled with the rail 42b of the first operation plate 42 so as to be slidable. Are provided in parallel, the upper surface has an assembling protrusion, two rails 43b at right angles to the rail 43a, and parallel to each other. The second operation plate 43, which is assembled in layers and slides along the rail 42b of the first operation plate 42, and on the lower surface thereof, is slidably operated with the rail 43b of the second operation plate 43. Two rails 44a having assembling grooves to be assembled are provided in parallel, and a rotating body supporting portion 44b and a rotating body fixing portion 44c are provided on the upper surface, and are laminated and assembled on the second operation plate 43. The third operating plate 44 is slid along the rail 43b of the second operating plate 43.

The assembling protrusions of the rails 42b and 43b of the first and second operating plates are dovetail protrusions, and the assembling grooves of the rails 43a and 44a of the second and third operating plates are dovetail grooves.

The rotating body supporting portion 44b of the third operating plate 44 is a block having a rotating support surface 44b-1 formed to be cut in a 'V' shape downward on the upper surface thereof, and the third operating plate 44 It is fixedly installed vertically on one side of the top surface.

The rotating body fixing portion 44c of the third operation plate 44 has a bolt hole 44c-1 'formed therethrough at an upper side thereof, and is fixed to the other side of the upper surface of the third operation plate 44 vertically. One end portion operatively assembled to the member 44c-1 and the bolt hole 44c-1 'of the support member 44c-1, and abutting the end face of the rotating body is pointed, and the handle 44c- to the other end thereof. 2 ') and fixing bolts 44c-2 for fixing the rotating body.

The shaft operation unit 41 is a disc block, which has an operation hole formed through a central portion of the upper surface, and a lifting block 41a mounted on each shaft operation hole 22 of the base 20, and It has a pinion (41b) rotatably embedded in the inner side of the operation hole of the elevating block (41a) and the axial support hole formed through the side portion, and is spaced apart from the elevating block (41a) on the base (30) The pinion 41b is provided with an axial support block 41e mounted on the shaft and a handle 41d at one end thereof, and the other end passes through the axial support hole and the elevating block 41a of the axial support block 41e. It consists of the drive shaft 41c which rotates.

The digital measuring device 50 includes a sensor 51 that is detachably attached to an upper outer circumferential surface of the fixed rotating body 101 and measures a gap, and a display unit 52 that displays a measured value. By displaying the measurement signal transmitted from the display unit 52, the operator adjusts the rotating body clearance adjusting unit 40 with reference to the measured value of the display unit 52 to set the gap of the rotating body 101.

In addition, the operator sets a gap value suitable for the digital measuring device 50 in advance, and then operates the rotor clearance adjusting unit 40 to precisely move the rotor 101 so that the gap of the rotor 101 reaches the set value. When the operator is notified of this, the gap adjustment can be made more easily.

The inner barrel clearance checking and adjusting device 10 of the boiler main water supply pump according to the present invention having the configuration as described above mounts the internal fixing assembly 100 of the pump to the barrel supporting part 30 and then the rotating body clearance. After operating the rotating body support part 44b and the rotating body fixing part 44c of the adjusting part 40, the both ends of the rotating body 101 are fixed to the said rotating body clearance adjusting part 40, and the said rotating body clearance adjusting part 40 is carried out. It is possible to accurately and easily adjust the gap of the rotating body 101 by moving up and down and right, left, right, front and rear.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It is to be understood that various changes and modifications may be made without departing from the scope of the present invention.

10: Inner barrel clearance check and adjustment device of boiler main water pump
20: base 21: leg
22: shaft operator 30: barrel support
31, 42: first operating plate 32, 43: second operating plate
33, 44: third operation plate 40: rotating body clearance adjustment unit
41: shaft operation unit

Claims (10)

A flat plate comprising: a base 20 having a plurality of legs 21 at the bottom thereof;
A barrel support part 30 having a structure capable of forward, backward, leftward and rightward operation, mounted on an upper middle portion of the base 20, and supporting an internal fixture assembly 100 of the pump;
It is mounted on both ends of the upper surface of the base 20, respectively, to fix the rotating body 101, and to move the rotating body 101 in the fixed state with the rotating body 101, and to move the rotating body 101 in the fixed state to adjust the gap. A rotating body clearance adjusting unit 40;
It includes a digital measuring device 50 which is detachably attached to the upper outer peripheral surface of the fixed rotating body 101, the sensor 51 for measuring the gap, and the display unit 52 for displaying the measured value,
The base (20)
Two shaft actuating holes 22 formed therethrough;
The rotary body clearance adjusting unit 40,
A shaft operating unit 41 mounted on each shaft operating hole 22 of the base 20;
A support shaft positioned on one axis with the shaft operation hole 22 and the shaft operation unit 41 of the base 20 at a lower surface thereof, and being vertically raised and lowered according to the operation of the shaft operation unit 41; 42a) and a first operating plate 42 having two rails 42b having assembling protrusions on an upper surface thereof in parallel;
On the lower surface, two rails 43a having assembling grooves to be slidably assembled with the rails 42b of the first operation plate 42 are provided in parallel, and have an assembling protrusion on the upper surface thereof, and the rails 43a. A second operation plate having two rails (43b) perpendicular to each other and parallelly laminated and assembled on the first operation plate (42) and sliding along the rail (42b) of the first operation plate (42). 43;
On the lower surface, the rail 43b of the second operation plate 43 is provided with two rails 44a having parallel assembly grooves slidably assembled thereon, and on the upper surface there is a rotating body support 44b and a rotating body height. And a third operating plate 44 having a top 44c and laminated and assembled on the second operating plate 43 to slide along the rail 43b of the second operating plate 43. Inner barrel clearance inspection and adjusting device for boiler main water pump. The method of claim 1,
Leg 21 of the base 20,
Inner barrel clearance inspection and adjustment device of the boiler main water supply pump, characterized in that the height adjustment unit (21a) for adjusting the height on the bottom surface. The method of claim 1,
The barrel support portion 30,
Two rails (31a) having an assembling protrusion is provided in parallel to the upper surface, the first operating plate 31 is fixed on the base 20,
On the lower surface, two rails 32a having assembling grooves to be slidably assembled with the rails 31a of the first operating plate 31 are provided in parallel, and on the upper surface thereof, an assembling protrusion is provided, and the rails ( A second operation including two rails 32b perpendicular to 32a, stacked and assembled on the first operation plate 31 and sliding along the rail 31a of the first operation plate 31; Plate 32,
On the lower surface, two rails 33a having parallel mounting grooves slidably assembled with the rails 32b of the second operation plate 32 are provided in parallel, and a support block 33b mounted at the center of the upper surface is provided. And a third operation plate 33 which is laminated and assembled on the second operation plate 32 and slides along the rail 32b of the second operation plate 32. Inner barrel clearance check and adjustment of main water pump. The method of claim 3,
Assembling protrusions of the rails 31a and 32b of the first and second operating plates 31 and 32,
Dovetail protrusions;
The assembling grooves of the rails 32a and 33a of the second and third operation plates 32 and 33 are
Inner barrel clearance checking and adjusting device of the boiler main feed water pump, characterized in that the dovetail groove. The method of claim 3,
The support block 33b of the third operation plate 33 is
Inner barrel clearance inspection and adjustment device of the boiler main water supply pump, characterized in that the upper surface is formed by the cross-section (33b-1) formed in a V-shape cut. delete The method of claim 1,
Assembling protrusions of the rails 42b and 43b of the first and second operating plates,
Dovetail protrusions;
The assembling grooves of the rails 43a and 44a of the second and third operating plates are
Inner barrel clearance checking and adjusting device of the boiler main feed water pump, characterized in that the dovetail groove. The method of claim 1,
The rotating body support portion 44b of the third operation plate 44 is
Boiler main water supply, characterized in that the block having a rotating support surface (44b-1) formed in the 'V' shaped downward on the upper surface, vertically fixed to one side of the upper surface of the third operating plate (44) Inner barrel clearance check and adjustment of the pump. The method of claim 1,
The rotating body fixing portion 44c of the third operation plate 44 is
A bolt hole 44c-1 'is formed through the upper side, and the support member 44c-1 is vertically fixed to the other side of the upper surface of the third operation plate 44, and the support member 44c-1. A fixing bolt 44c-2 operatively assembled to the bolt hole 44c-1 'of the bolt hole, and having one end portion in contact with the end face of the rotating body having a handle 44c-2' at the other end thereof and fixing the rotating body. Inner barrel clearance inspection and adjustment device of the boiler main feed water pump, characterized in that consisting of). The method of claim 1,
The shaft operation unit 41 of the rotating body clearance adjusting portion 40,
An elevating block (41a) having an operating hole penetratingly formed in a central portion of the upper surface and mounted on each of the shaft operating holes (22) of the base (20);
A pinion (41b) rotatably embedded in the inner side of the operating hole of the elevating block (41a);
An axial support block 41e which is formed through the side portion and is mounted on the base 20 at regular intervals from the elevating block 41a;
It has a handle (41d) at one end, and the other end is composed of a drive shaft (41c) for rotating the pinion (41b) through the shaft support hole and the lifting block (41a) of the shaft support block (41e) Inner barrel clearance check and adjustment device for boiler main water supply pump.

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