CN107514971A - A kind of servomotor displacement transducer attachment means of small steam turbine - Google Patents
A kind of servomotor displacement transducer attachment means of small steam turbine Download PDFInfo
- Publication number
- CN107514971A CN107514971A CN201710828354.9A CN201710828354A CN107514971A CN 107514971 A CN107514971 A CN 107514971A CN 201710828354 A CN201710828354 A CN 201710828354A CN 107514971 A CN107514971 A CN 107514971A
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- attachment means
- hole
- detection bar
- displacement transducer
- steam turbine
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Classifications
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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
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention relates to small steam turbine field, specifically, it is related to a kind of servomotor displacement transducer attachment means of small steam turbine, servomotor includes piston rod, displacement transducer includes can be along the detection bar of piston rod axis up-and-down motion, the attachment means are a horizontally disposed platy structure, piston rod and detection bar respectively close to running through vertically at left and right sides of attachment means and fasten setting, make the piston rod to pump drive detection bar to be synchronized with the movement by attachment means.Attachment means provided by the invention are simple in construction, can overcome because piston rod horizontal hunting cause the attachment means that it is connected with displacement transducer caused by stress fatigue, be adapted to promote the use of.
Description
Technical field
The present invention relates to small steam turbine technical field, specifically, is related to a kind of servomotor displacement transducer of small steam turbine
Attachment means.
Background technology
Steam turbine is a kind of using steam as power, and the heat energy of steam is converted into the rotating machinery of mechanical work, is modern
Most widely used prime mover in thermal power plant.Steam turbine has the advantages that single-machine capacity is big, efficiency high, long lifespan.
The small steam turbine pitch servomotor connecting rod horizontal direction twisting used in steam power plant, causes the spy of displacement transducer LVDT
Connecting rod stress concentration between measuring staff and servomotor piston rod, time and cumulative stress to a certain extent when small steam turbine can be caused to adjust
Door LVDT connecting rod crackings, feedback rest on gap, and pitch can be always to maximum opening side when being connected to the instruction more than this aperture
To action, so as to cause small steam turbine rotating speed out of control, water-level alarm is in turn resulted in, finally needs that operations staff makes lock manually or small machine surpasses
Quick-action is tripped.
In view of this, it is special to propose the present invention.
The content of the invention
The present invention is intended to provide the attachment means between a kind of servomotor piston rod and displacement transducer detection bar, dynamic in oil
When machine piston rod produces the twisting of horizontal direction, pair it will not cause to damage with LVDT connecting rod, while can still ensure that LVDT is erected
Nogata moves to accurate, Normal Feedback pitch aperture.
To reach above-mentioned purpose, the present invention specifically adopts the following technical scheme that：
A kind of servomotor displacement transducer attachment means of small steam turbine, servomotor include piston rod 6, displacement transducer bag
Including can be along the detection bar 5 of piston rod axis up-and-down motion, and the attachment means 1 are a horizontally disposed tabular knot
Structure, piston rod 6 and detection bar 5 respectively close to running through at left and right sides of attachment means 1 vertically and fastens setting, and order is up and down reciprocatingly transported
Dynamic piston rod 6 drives detection bar 5 to be synchronized with the movement by attachment means 1.
In such scheme, the piston rod 6 of servomotor is connected by mounting hole 7 with attachment means 1, so as to drive displacement sensor
Detection bar 5 move back and forth in vertical direction, institute's displacement sensors are LVDT linear variable difference transformers, belong to straight line
Displacement transducer, operation principle is similar to the movable transformer of iron core.It is by a primary coil, two secondary coils, iron core, coil
The parts such as skeleton, shell form；Primary coil, secondary coil are distributed on coil rack, and coil inside has one can freely move
Dynamic rod core.When iron core is in an intermediate position, induced electromotive force caused by two secondary coils is equal, so output electricity
Pressure is zero；When iron core is mobile in coil inside and during off-center position, induced electromotive force caused by two coils, there is electricity
Pressure output, its voltage swing depend on the size of displacement.But because piston rod 6 is in the horizontal direction with a certain degree of
Twisting, can drive the swing of attachment means 1 in the horizontal direction, if detection bar 5 fastens in all directions with attachment means 1
Set, then can produce stress fatigue for a long time, can also cause LVDT accuracy of detection to decline, therefore make detection bar 5 and attachment means 1
Certain installation surplus is set in the horizontal direction, to avoid stress caused by the horizontal hunting of attachment means 1.
The present invention further scheme be：The top of the detection bar 5 be provided with two respectively with the upper and lower surface of attachment means 1
The fastener 3 to offset, make the detection bar 5 through the through hole 2 of the attachment means 1 mutually tight with attachment means 1 in vertical direction
It is fixed to put.
In such scheme, the top of the detection bar 5 sets two fasteners 3 of clamping connection 1 up and down, order detection
Bar 5 is kept strokes with servomotor piston rod 6 in vertical direction by attachment means 1.
The present invention further scheme be：The diameter of the detection bar 5 be less than through hole 2 diameter, the fastener 3 it is straight
Footpath be more than through hole 2 diameter, when attachment means 1 are swung in the horizontal direction, make detection bar 5 in the horizontal direction with through hole
The non-contact setting of 2 inwalls.
In such scheme, attachment means 1 are provided with the through hole 2 for fixed test bar 5, and fastener 3 covers through hole 2 with connecting
The smooth surface that connection device 1 is in contact is set, when attachment means 1 are swung in the horizontal direction, due to the diameter of detection bar 5
Less than the aperture of through hole 2, therefore detection bar 5 will not produce stress because of the stress that is in contact in the horizontal direction.
The present invention further scheme be：The through hole 2 is provided with the cushion pad 4 of the tubular to be offseted with the inwall of through hole 2, described
The internal diameter of cushion pad 4 is more than detection bar 5, makes detection bar 5 be set through cushion pad 4.
In such scheme, cushion pad 4 is made up of flexible material, rubber elastomeric material is used, when piston rod 6 more
During the larger twisting of generation, it is likely to result in the madial wall of through hole 2 and is offseted with detection bar 5, sets cushion pad 4 to make in the madial wall of through hole 2
Insurance layer between detection bar 5 and through hole 2, even if larger twisting occurs for attachment means 1, it will not also make detection bar 5 and through hole 2
Directly contact.
The present invention further scheme be：The cushion pad 4 is provided with some cushion holes 41 in vertical direction.
The present invention further scheme be：The cushion pad 4 is provided with the cushion hole 41 uniformly or non-uniformly arranged, described slow
The aperture of punching 41 is identical or different setting.
The present invention further scheme be：The cushion pad 4 is identical provided with some apertures and is arranged in the cushion hole of circle
41；Preferably, the cushion pad 4 is provided with two layers of cushion hole 41 for being arranged in circle.
In such scheme, because elastic material has certain degree of hardness in itself, when detection bar 5 offsets with cushion pad 4, still
The power in horizontal direction can be produced, long-term stress also can produce stress fatigue to detection bar 5, therefore in the Vertical Square of cushion pad 4
To provided with some structures of cushion hole 41, contact is inhaled as far as possible by cushion hole 41 when detection bar 5 contacts with cushion pad 4
Receive, so as to produce less stress.Quantity, aperture and the arrangement mode of through hole 2 can be selected according to actual conditions.
The present invention further scheme be：The pass of the through hole 2 is strip, the direction of its major axis and attachment means 1
The consistent setting in horizontal hunting direction.
The present invention further scheme be：The pass of the through hole 2 is ellipse, and its long axis direction is horizontal with attachment means 1
The consistent setting of swaying direction.
In such scheme, because piston rod 6 twists in the horizontal direction, attachment means 1 are driven to swing, but it is put
The reciprocally swinging of dynamic direction substantially left and right directions, therefore the pass of setting through hole 2 is class elongate in shape, its long axis direction and pendulum
The dynamic consistent setting in direction so that have more margin in the horizontal direction between the through hole 2 and detection bar 5 in swing.
The present invention further scheme be：The thickness of the cushion pad 4 is less than the hole depth of through hole 2.
In such scheme, fastener 3 and the surface mutually smooth setting of attachment means 1, the occurred level of attachment means 1 is made to swing
When, the original position that detection bar 5 can be on keep level direction is not shifted, and the hole depth that the thickness of cushion pad 4 is less than through hole 2 is set,
It is to prevent from producing frictional force between cushion pad 4 and fastener 3, to avoid detection bar 5, stress is bent in the horizontal direction.
The present invention further scheme be：Be connected with piston rod 6 thickness of side of the attachment means 1 is more than itself and detection
Bar 5 is connected the thickness of side.
In such scheme, because piston rod 6 is thick compared with detection bar 5, it is contemplated that the overall construction intensity of attachment means 1, will be with
Piston rod 6 be connected side attachment means 1 thickness increase.
Beneficial effects of the present invention are：
1. the invention provides the attachment means between a kind of servomotor piston rod and displacement transducer detection bar, detection bar
Surplus is left in the horizontal direction in assembling with attachment means so that detection bar is by the attachment means in vertical direction and oil
Motivation piston rod is kept strokes, but can be moved within the specific limits in the horizontal direction and the structure that is not in contact with detection bar, greatly
Ground reduces harm of the stress fatigue to attachment means；
2. the present invention is provided with cushion pad in the through hole that attachment means are connected with detection bar, it is when piston rod swing is larger
Detection bar and through-hole wall when bumping against, cushion pad greatly reduces this shock so that detection bar and attachment means are not
Larger stress fatigue can be produced；
3. some cushion holes with identical or different aperture are provided with the cushion pad of the present invention, using certain arrangement side
Formula, further reduce detection bar and be in contact with through-hole wall caused power.
Brief description of the drawings
Fig. 1 is the structural representation of attachment means of the present invention.
Fig. 2 is structural representation when detection bar of the present invention is arranged in attachment means.
Fig. 3 is the sectional drawing of AA parts in Fig. 2.
Fig. 4 is the structural representation of cushion pad in embodiment 2.
Fig. 5 is the structural representation of cushion pad in embodiment 3.
Fig. 6 is the structural representation of cushion pad in embodiment 4.
Critical piece is in figure：1-attachment means, 2-through hole, 3-fastener, 4-cushion pad, 41-cushion hole, 5-
Detection bar, 6-piston rod, 7-mounting hole.
Embodiment
For make present invention solves the technical problem that, the technical scheme that uses and the technique effect that reaches it is clearer, below
Embodiments of the present invention will be described in further detail with reference to accompanying drawing.
Embodiment 1
In the present embodiment, as shown in Figure 1, there is provided a kind of servomotor displacement transducer attachment means of small steam turbine, oil are dynamic
Machine includes piston rod 6, displacement transducer include can vertically reciprocating detection bar 5, the attachment means 1 are a plate
Shape structure, the piston rod 6 are arranged in the horizontally disposed side of attachment means 1 and are fastened setting with attachment means 1, the inspection
Measuring staff 5 is arranged in the relative opposite side of attachment means 1 and is only fastened in vertical direction setting with attachment means 1, in order
Under reciprocating piston by attachment means 1 drive detection bar 5 be synchronized with the movement.
In the present embodiment, attachment means 1 are connected with two LVDT displacement transducers, and the piston rod 6 of servomotor passes through installation
Hole 7 is connected with attachment means 1, so as to drive the detection bar 5 of displacement sensor to move back and forth in vertical direction, the displacement sensing
Device is LVDT linear variable difference transformers, belongs to linear displacement transducer, operation principle is similar to the movable transformer of iron core.It by
The parts such as one primary coil, two secondary coils, iron core, coil rack, shell form；Primary coil, secondary coil distribution
On coil rack, coil inside has a rod core that can move freely.When iron core is in an intermediate position, two secondary
Induced electromotive force is equal caused by coil, and such output voltage is zero；When iron core is mobile in coil inside and off-center position
When, induced electromotive force caused by two coils, there is voltage output, its voltage swing depends on the size of displacement.But
Because piston rod 6 has a certain degree of twisting in the horizontal direction, the swing of attachment means 1 in the horizontal direction can be driven,
If detection bar 5 is with attachment means 1, fastening is set in all directions, can be produced stress fatigue for a long time, can also be caused
LVDT accuracy of detection declines, therefore makes detection bar 5 set certain installation surplus in the horizontal direction with attachment means 1, to avoid
Stress caused by the horizontal hunting of attachment means 1.
In the present embodiment, as shown in figure 3, the top of the detection bar 5 be provided with two respectively with the upper and lower surface of attachment means 1
The fastener 3 to offset, make the detection bar 5 through the through hole 2 of the attachment means 1 mutually tight with attachment means 1 in vertical direction
It is fixed to put.The top of the detection bar 5 sets two fasteners 3 of clamping connection 1 up and down, makes detection bar 5 pass through connection
Device 1 is kept strokes with servomotor piston rod 6 in vertical direction.
In the present embodiment, as shown in figure 3, the diameter of the detection bar 5 be less than through hole 2 diameter, the fastener 3 it is straight
Footpath be more than through hole 2 diameter, when attachment means 1 are swung in the horizontal direction, make detection bar 5 in the horizontal direction with through hole
The non-contact setting of 2 inwalls.
In the present embodiment, as shown in figures 1 and 3, attachment means 1 are provided with two through holes 2 for fixed test bar 5,
Fastener 3 covers the smooth surface that through hole 2 is in contact with attachment means 1 and set, when attachment means 1 are swung in the horizontal direction
When, because the diameter of detection bar 5 is less than the aperture of through hole 2, therefore detection bar 5 will not be in the horizontal direction because of the stress production that is in contact
Raw stress.
In the present embodiment, the pass of the through hole 2 is ellipse, its long axis direction and the horizontal hunting direction phase of attachment means 1
It is consistent to set.Because piston rod 6 twists in the horizontal direction, attachment means 1 are driven to swing, but its swaying direction is substantially
For the reciprocally swinging of left and right directions, therefore it is class elongate in shape, its long axis direction and swaying direction phase one to set the pass of through hole 2
Cause to set so that have more margin in the horizontal direction between the through hole 2 and detection bar 5 in swing.
In the present embodiment, as shown in figure 1, the attachment means 1 are connected with piston rod 6, the thickness of side is more than itself and detection
Bar 5 is connected the thickness of side.Because piston rod 6 is thick compared with detection bar 5, it is contemplated that the overall construction intensity of attachment means 1, will be with work
Stopper rod 6 be connected side attachment means 1 thickness increase.
Embodiment 2
In the present embodiment, as shown in Figure 1, there is provided a kind of servomotor displacement transducer attachment means of small steam turbine, oil are dynamic
Machine includes piston rod 6, displacement transducer include can vertically reciprocating detection bar 5, the attachment means 1 are a plate
Shape structure, the piston rod 6 are arranged in the horizontally disposed side of attachment means 1 and are fastened setting with attachment means 1, the inspection
Measuring staff 5 is arranged in the relative opposite side of attachment means 1 and is only fastened in vertical direction setting with attachment means 1, in order
Under reciprocating piston by attachment means 1 drive detection bar 5 be synchronized with the movement.
In the present embodiment, attachment means 1 are connected with two LVDT displacement transducers, and the piston rod 6 of servomotor passes through installation
Hole 7 is connected with attachment means 1, so as to drive the detection bar 5 of displacement sensor to move back and forth in vertical direction, the displacement sensing
Device is LVDT linear variable difference transformers, belongs to linear displacement transducer, operation principle is similar to the movable transformer of iron core.It by
The parts such as one primary coil, two secondary coils, iron core, coil rack, shell form；Primary coil, secondary coil distribution
On coil rack, coil inside has a rod core that can move freely.When iron core is in an intermediate position, two secondary
Induced electromotive force is equal caused by coil, and such output voltage is zero；When iron core is mobile in coil inside and off-center position
When, induced electromotive force caused by two coils, there is voltage output, its voltage swing depends on the size of displacement.But
Because piston rod 6 has a certain degree of twisting in the horizontal direction, the swing of attachment means 1 in the horizontal direction can be driven,
If detection bar 5 is with attachment means 1, fastening is set in all directions, can be produced stress fatigue for a long time, can also be caused
LVDT accuracy of detection declines, therefore makes detection bar 5 set certain installation surplus in the horizontal direction with attachment means 1, to avoid
Stress caused by the horizontal hunting of attachment means 1.
In the present embodiment, as shown in figure 3, the top of the detection bar 5 be provided with two respectively with the upper and lower surface of attachment means 1
The fastener 3 to offset, make the detection bar 5 through the through hole 2 of the attachment means 1 mutually tight with attachment means 1 in vertical direction
It is fixed to put.The top of the detection bar 5 sets two fasteners 3 of clamping connection 1 up and down, makes detection bar 5 pass through connection
Device 1 is kept strokes with servomotor piston rod 6 in vertical direction.
In the present embodiment, as shown in figure 3, the diameter of the detection bar 5 be less than through hole 2 diameter, the fastener 3 it is straight
Footpath be more than through hole 2 diameter, when attachment means 1 are swung in the horizontal direction, make detection bar 5 in the horizontal direction with through hole
The non-contact setting of 2 inwalls.
In the present embodiment, as shown in figures 1 and 3, attachment means 1 are provided with two through holes 2 for fixed test bar 5,
Fastener 3 covers the smooth surface that through hole 2 is in contact with attachment means 1 and set, when attachment means 1 are swung in the horizontal direction
When, because the diameter of detection bar 5 is less than the aperture of through hole 2, therefore detection bar 5 will not be in the horizontal direction because of the stress production that is in contact
Raw stress.
In the present embodiment, the through hole 2 is provided with the cushion pad 4 of the tubular to be offseted with the inwall of through hole 2, the cushion pad 4
Internal diameter is more than detection bar 5, makes detection bar 5 be set through cushion pad 4.The cushion pad 4 is made up of flexible material, adopts more
With rubber elastomeric material, when larger twisting occurs for piston rod 6, it is likely to result in the madial wall of through hole 2 and is offseted with detection bar 5,
Cushion pad 4 is set as the insurance layer between detection bar 5 and through hole 2 in the madial wall of through hole 2, though attachment means 1 occur it is larger
Twisting, also will not be such that detection bar 5 is directly contacted with through hole 2.
In the present embodiment, the cushion pad 4 is provided with some cushion holes 41 in vertical direction, and the cushion pad 4 is provided with equal
The cushion hole 41 of even arrangement, the cushion pad 4 is identical provided with some apertures and is arranged in the cushion hole 41 of circle.Due to elastic material
Matter has certain degree of hardness in itself, when detection bar 5 offsets with cushion pad 4, can still produce the power in horizontal direction, long-term stress
Also stress fatigue can be produced to detection bar 5, therefore some structures of cushion hole 41 is provided with the vertical direction of cushion pad 4, detected
Contact is absorbed as far as possible by cushion hole 41 when bar 5 contacts with cushion pad 4, so as to produce less stress.
In the present embodiment, the pass of the through hole 2 is circle, the shape relative set with cushion pad 4.
In the present embodiment, the thickness of the cushion pad 4 is less than the hole depth of through hole 2.Fastener 3 and the surface of attachment means 1
Mutually smooth to set, when making the occurred level of attachment means 1 swing, the original position that detection bar 5 can be on keep level direction does not shift,
And the thickness of cushion pad 4 be less than through hole 2 hole depth set, be in order to prevent from producing frictional force between cushion pad 4 and fastener 3, with
Avoiding detection bar 5, stress is bent in the horizontal direction.
In the present embodiment, as shown in figure 1, the attachment means 1 are connected with piston rod 6, the thickness of side is more than itself and detection
Bar 5 is connected the thickness of side.Because piston rod 6 is thick compared with detection bar 5, it is contemplated that the overall construction intensity of attachment means 1, will be with work
Stopper rod 6 be connected side attachment means 1 thickness increase.
Embodiment 3
The present embodiment and the difference of embodiment 2 are：
In the present embodiment, the cushion pad 4 is provided with some cushion holes 41 in vertical direction, and the cushion pad 4 is provided with equal
The cushion hole 41 of even arrangement, the cushion pad 4 is identical provided with some apertures and is arranged in two layers of circular cushion hole 41.Due to bullet
Property material there is certain degree of hardness in itself, when detection bar 5 and cushion pad 4 offset, can still produce the power in horizontal direction, for a long time
Stress also can produce stress fatigue to detection bar 5, therefore be provided with two layers of structure of cushion hole 41 in the vertical direction of cushion pad 4,
Contact is absorbed as far as possible by cushion hole 41 when detection bar 5 contacts with cushion pad 4, so as to produce less stress.
Embodiment 4
The present embodiment and the difference of embodiment 2 are：
In the present embodiment, the pass of the through hole 2 is ellipse, its long axis direction and the horizontal hunting direction of attachment means 1
Consistent setting.Because piston rod 6 twists in the horizontal direction, attachment means 1 are driven to swing, but its swaying direction is big
The reciprocally swinging for left and right directions is caused, therefore the pass of setting through hole 2 is class elongate in shape, its long axis direction and swaying direction phase
It is consistent to set so as to have more margin in the horizontal direction between the through hole 2 and detection bar 5 in swing.
In the present embodiment, the cushion pad 4 is ellipse, in vertical direction provided with some cushion holes 41, the buffering
Pad 4 is provided with the cushion hole 41 of uneven arrangement, and the cushion pad 4 is identical provided with some apertures and is arranged in the circular buffering of individual layer
Hole 41.Because elastic material has certain degree of hardness in itself, when detection bar 5 offsets with cushion pad 4, horizontal direction can be still produced
On power, long-term stress also can to detection bar 5 produce stress fatigue, therefore cushion pad 4 vertical direction be provided with two layers buffering
The structure of hole 41, contact is absorbed as far as possible by cushion hole 41 when detection bar 5 contacts with cushion pad 4, it is smaller so as to produce
Stress.
Remaining embodiment of the present embodiment is the same as embodiment 2.
It above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that this hair
It is bright to be not limited to specific embodiment described here, various significantly change, again can be carried out for a person skilled in the art
Adjustment and replacement are without departing from protection scope of the present invention.Therefore, although the present invention has been carried out by above example compared with
For detailed description, but the present invention is not limited only to above example, without departing from the inventive concept, can be with
Including other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of servomotor displacement transducer attachment means of small steam turbine, servomotor includes piston rod (6), displacement transducer bag
Including can be along the detection bar (5) of piston rod axis up-and-down motion, it is characterised in that the attachment means (1) are a water
The flat platy structure set, piston rod (6) and detection bar (5) are respectively close to vertical through simultaneously at left and right sides of attachment means (1)
Fastening is set, and makes the piston rod (6) to pump drive detection bar (5) to be synchronized with the movement by attachment means (1).
2. the servomotor displacement transducer attachment means of small steam turbine according to claim 1, it is characterised in that the inspection
The top of measuring staff (5) is provided with two fasteners (3) to be offseted respectively with attachment means (1) upper and lower surface, makes through the connection
The detection bar (5) of the through hole (2) of device (1) is fastened setting with attachment means (1) in vertical direction.
3. the servomotor displacement transducer attachment means of small steam turbine according to claim 1 or 2, it is characterised in that institute
The diameter for stating detection bar (5) is less than the diameter of through hole (2), and the diameter of the fastener (3) is more than the diameter of through hole (2), when even
When connection device (1) is swung in the horizontal direction, make detection bar (5) in the horizontal direction with the non-contact setting of through hole (2) inwall.
4. the servomotor displacement transducer attachment means of the small steam turbine according to claims 1 to 3 any one, its feature
It is, the through hole (2) is provided with the cushion pad (4) of the tubular to be offseted with through hole (2) inwall, and the internal diameter of the cushion pad (4) is big
In detection bar (5), detection bar (5) is made to be set through cushion pad (4).
5. the servomotor displacement transducer attachment means of the small steam turbine according to Claims 1 to 4 any one, its feature
It is, the cushion pad (4) is provided with some cushion holes (41) in vertical direction.
6. the servomotor displacement transducer attachment means of the small steam turbine according to Claims 1 to 5 any one, its feature
Be, the cushion pad (4) is provided with the cushion hole (41) that uniformly or non-uniformly arranges, the aperture of the cushion hole (41) it is identical or
Different setting.
7. the servomotor displacement transducer attachment means of the small steam turbine according to claim 1~6 any one, its feature
It is, the cushion pad (4) is identical provided with some apertures and is arranged in the cushion hole (41) of circle；Preferably, the cushion pad
(4) it is provided with two layers of cushion hole (41) for being arranged in circle.
8. the servomotor displacement transducer attachment means of the small steam turbine according to claim 1~7 any one, its feature
It is, the pass of the through hole (2) is oval, the setting consistent with attachment means (1) horizontal hunting direction of its long axis direction.
9. the servomotor displacement transducer attachment means of the small steam turbine according to claim 1~8 any one, its feature
It is, the thickness of the cushion pad (4) is less than the hole depth of through hole (2).
10. the servomotor displacement transducer attachment means of the small steam turbine according to claim 1~9 any one, it is special
Sign is, be connected with piston rod (6) thickness of side of the attachment means (1) is more than the thickness of its side that is connected with detection bar (5)
Degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710828354.9A CN107514971A (en) | 2017-09-14 | 2017-09-14 | A kind of servomotor displacement transducer attachment means of small steam turbine |
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| CN201710828354.9A CN107514971A (en) | 2017-09-14 | 2017-09-14 | A kind of servomotor displacement transducer attachment means of small steam turbine |
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| CN113531513A (en) * | 2021-07-28 | 2021-10-22 | 哈尔滨沃华智能发电设备有限公司 | Protection method of steam drum water level control system during steam inlet regulating valve failure of steam-driven water supply pump |
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| CN202707155U (en) * | 2012-07-20 | 2013-01-30 | 天津大唐国际盘山发电有限责任公司 | Connecting device between high-pressure adjusting valve and hydraulic servo-motor of steam turbine |
| CN204115696U (en) * | 2014-06-12 | 2015-01-21 | 沈阳飞机工业（集团）有限公司 | For the flexible connecting device of rod-pulling type linear movement pick-up calibration |
| CN205422843U (en) * | 2016-04-08 | 2016-08-03 | 中国神华能源股份有限公司 | A connecting device and steam turbine that is used for steam turbine high pressure to adjust valve and servomotor |
| CN207197431U (en) * | 2017-09-14 | 2018-04-06 | 河北大唐国际张家口热电有限责任公司 | A kind of servomotor displacement transducer attachment means of small steam turbine |
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| CN113531513A (en) * | 2021-07-28 | 2021-10-22 | 哈尔滨沃华智能发电设备有限公司 | Protection method of steam drum water level control system during steam inlet regulating valve failure of steam-driven water supply pump |
| CN113531513B (en) * | 2021-07-28 | 2023-05-02 | 哈尔滨沃华智能电力技术有限公司 | Protection method of drum water level control system in case of failure of steam inlet valve of steam feed pump |
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