CN206816940U - Position sensor of valve and intelligent positioner - Google Patents

Abstract

The utility model provides a kind of position sensor of valve and intelligent positioner, is related to valve positioner sensor field.Position sensor of valve includes displacement piece, guide, measuring piece, spacing regulating part and the support for being connected with external device (ED).Displacement piece includes displacement frame and driving member, guide includes guide rod and dynamic clamping head and quiet clamping head, the quantity at least two and diameter parallel of guide rod, displacement frame is slidably disposed in guide rod, dynamic clamping head and quiet clamping head is along the axially arranged of guide rod and is displaced by frame and support compression, and measuring piece includes measurement portion and movable part, and movable part is with drive member, measurement portion can measurement data, spacing regulating part is used to limit the range of movement of driving member.Intelligent positioner includes base and position sensor of valve, and base includes detection zone, and position sensor of valve is fixedly connected with base, and driving member is located at detection zone.The detection of position sensor of valve and intelligent positioner for valve location is relatively reliable, and service life is higher.

Description

Position sensor of valve and intelligent positioner

Technical field

The utility model is related to valve positioner sensor field, in particular to a kind of position sensor of valve and Intelligent positioner.

Background technology

Intelligent positioning is performed in control valve positions calculations use, is always carved all in relatively control command (CMD) and valve position (POS) the position sensor deviation value P △ between.Position sensor is the basic data of all control computings.

It is very suitable that rotational potentiometer form sensor detects some butterfly valves, the application scenario of ball valve (rotary motion), still The problem of when being detected for straight travel regulating valve due to the installation dimension and installation accuracy of parts, can not accurately it be examined Survey result.And some are used for the unreasonable structure of the detection means of Direct Travel detection in itself and are also not sufficiently stable, cause testing result Also there is deviation.

Utility model content

The purpose of this utility model is to provide a kind of position sensor of valve, its can reliably, detect valve exactly Position.

Another purpose of the present utility model is to provide a kind of intelligent positioner, and it can detect valve position exactly Put and good airproof performance, it is relatively reliable durable.

What embodiment of the present utility model was realized in：

Embodiment of the present utility model provides a kind of position sensor of valve, including displacement piece, guide, measuring piece, Spacing regulating part and the support for being connected with external device (ED).The displacement piece, the guide and the spacing regulating part The support is may be contained within, the displacement piece includes displacement frame and the driving member for being abutted with valve rod, the driving member The displacement frame is arranged at, the guide includes guide rod and dynamic clamping head and quiet clamping head, the quantity at least two of the guide rod And diameter parallel, the displacement frame are slidably disposed in the guide rod, axle of the dynamic clamping head and quiet clamping head along the guide rod To being arranged at the guide rod and being compressed by the displacement frame and the support, the measuring piece is removable installed in the branch Frame, the measuring piece include measurement portion and movable part, and the movable part is connected with the driving member and can transported with the driving member Dynamic, the measurement portion can be used for according to by the motion change measurement data of the movable part, the spacing regulating part The range of measurement portion limits the range of movement along guide rod axial direction of the driving member.

In addition, the position sensor of valve provided according to embodiment of the present utility model, can also have what is added as follows Technical characteristic：

In alternative embodiment of the present utility model, the driving member includes detection bar and position handle neck wheel, institute's rheme Put handle neck wheel to be used to connect the movable part, the position handle neck wheel is sheathed on the close spacing tune of the detection bar Save one end of part, the diameter parallel of the axis of the detection bar and the guide rod, the other end of the detection bar be used for Valve rod abuts.

In alternative embodiment of the present utility model, the driving member also includes buffering fixture, the buffering fixture It is bonded including compressing ripple spring pad and the first nut, the side of the position handle neck wheel with the displacement frame, the compression ripple spring Pad is worn by the detection bar and the remote displacement frame of the position handle neck wheel is connected to by first nut Side.

In alternative embodiment of the present utility model, the quantity of the guide rod for two and is arranged side by side.

In alternative embodiment of the present utility model, the spacing regulating part includes spacing adjusting screw and the second nut, The spacing adjusting screw is spirally connected with the support, second nut be rotatablely arranged at the spacing adjusting screw and with The support abuts.

In alternative embodiment of the present utility model, the support includes receiving portion and multiple positioning holes, described accommodation section For accommodating the measuring piece, multiple positioning holes are set along described accommodation section, and the part positioning hole is used for the survey Amount part positions in the support, and the measuring piece is adjustable in the position of described accommodation section.

In alternative embodiment of the present utility model, the measuring piece is swept resistance chi.

Embodiment of the present utility model provides a kind of intelligent positioner, including base and the valve location of any of the above-described Sensor, the base include detection zone, and the position sensor of valve is fixedly connected with the base, and the driving member is located at The detection zone and movable relative to the base.

In alternative embodiment of the present utility model, the intelligent positioner includes O-ring seal, sealing ring cover plate and U Type lip seal circle, the driving member are arranged in the base, the U-shaped lip seal snare located at the driving member and with institute Base interference fit is stated, the O-ring seal is arranged at the circumference of the U-shaped lip seal circle and matched somebody with somebody with the base interference Close, the sealing ring cover plate is sheathed on the driving member and separates the O-ring seal with the detection zone, will be described U-shaped Lip seal circle separates with the detection zone.

In alternative embodiment of the present utility model, the driving member positioned at one end of the detection zone without departing from described Detection zone.

The beneficial effects of the utility model are：

Position sensor of valve sets the guide rod of two or the above on support, in conjunction with dynamic clamping head and quiet clamping head so that The direction moved integrally of displacement piece is very stable, and stable moving direction make it that the measurement of measuring piece is also more accurate, and When measurement stroke is identical, the overall length dimension of position sensor of valve is smaller, saves installing space, while rigidity lifting, ties Structure is relatively reliable.Intelligent positioner is combined base with position sensor of valve, close further through O-ring seal and U-shaped lip The effect of seal so that the inside of intelligent positioner completely cuts off with outside sealing, prevents impurity from entering, and sealing effectiveness is good, ensures Detect reliability.

Brief description of the drawings

, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also To obtain other related accompanying drawings according to these accompanying drawings.

Fig. 1 is the structural representation under a visual angle of the position sensor of valve that embodiment 1 of the present utility model provides；

Fig. 2 is the explosive view of the position sensor of valve shown in Fig. 1；

Fig. 3 is structural representation under another visual angle of the position sensor of valve shown in Fig. 1；

Fig. 4 is the structural representation at a visual angle of the intelligent positioner that embodiment 2 of the present utility model provides；

Fig. 5 is the structural representation under another visual angle of Fig. 4 intelligent positioner；

Fig. 6 is the decomposing schematic representation of the partial component of the intelligent positioner shown in Fig. 4.

Icon：100- position sensor of valve；10- displacement pieces；11- displacement frames；13- driving members；132- detection bars；134- Position handle neck wheel；136- buffers fixture；1361- compresses ripple spring pad；The nuts of 1363- first；30- guides；31- is oriented to Bar；33- dynamic clamping head and quiet clamping heads；50- measuring pieces；51- measurement portions；53- movable parts；The spacing regulating parts of 70-；The spacing adjusting screws of 71-； The nuts of 73- second；90- supports；91- receiving portions；93- positioning holes；101- valve rods；102- fixed screws；103- fixes spiral shell Nail；200- intelligent positioners；210- bases；211- detection zones；220-O type sealing rings；230- sealing ring cover plates；240-U type lips Mouth sealing ring.

Embodiment

It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and The component of the utility model embodiment shown can be configured to arrange and design with a variety of.

Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of the utility model protection.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.

, it is necessary to explanation, the orientation or position relationship of the instruction such as term " interior ", " outer " in description of the present utility model For based on orientation shown in the drawings or position relationship, or the utility model product using when the orientation or position usually put Relation, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply that signified device or element must There must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.

In description of the present utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set Put ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in utility model.

Embodiment 1

Fig. 1, Fig. 2 and Fig. 3 are refer to, present embodiments provides a kind of position sensor of valve 100, including displacement piece 10, Guide 30, measuring piece 50, spacing regulating part 70 and the support 90 for being connected with external device (ED).

Specifically, displacement piece 10, guide 30 and spacing regulating part 70 may be contained within support 90.Displacement piece 10 includes position Move frame 11 and the driving member 13 for being abutted with valve rod 101, driving member 13 are arranged at displacement frame 11.Guide 30 includes leading To bar 31 and dynamic clamping head and quiet clamping head 33, the quantity at least two and diameter parallel of guide rod 31, displacement piece 10 is mounted slidably In guide rod 31, dynamic clamping head and quiet clamping head 33 is pressed along being axially set in guide rod 31 and being displaced by frame 11 for guide rod 31 with support 90 Contracting.

Measuring piece 50 is removable installed in support 90, and measuring piece 50 includes measurement portion 51 and movable part 53, movable part 53 Be connected and can be moved with driving member 13 with driving member 13, measurement portion 51 can by the motion change measurement data of movable part 53, Spacing regulating part 70 is used for the range of movement along the axial direction of guide rod 31 that driving member 13 is limited according to the range of measurement portion 51.

Detailed, driving member 13 includes detection bar 132 and position handle neck wheel 134, and position handle neck wheel 134 is used to connect Movable part 53, position handle neck wheel 134 are sheathed on one end of the close spacing regulating part 70 of detection bar 132, the axle of detection bar 132 The diameter parallel of line and guide rod 31, the other end of detection bar 132 are used to abut with valve rod 101.

Wherein, driving member 13 can also be the object of other shapes, if it can be abutted with valve rod 101, and with valve The motion of gate valve bar 101 and move, and drive movable part 53 move.

Driving member 13 also includes buffering fixture 136, and buffering fixture 136 includes compressing ripple spring pad 1361 and the first nut 1363, the side of position handle neck wheel 134 is bonded with displacement frame 11, and compression ripple spring pad 1361 is detected measuring staff 132 and wears and pass through First nut 1363 is connected to the side of the remote displacement frame 11 of position handle neck wheel 134.

Detailed, the quantity of guide rod 31 for two and is arranged side by side.

Detailed, spacing regulating part 70 includes the spacing nut 73 of adjusting screw 71 and second.Spacing adjusting screw 71 and branch Frame 90 is spirally connected, and the second nut 73 is rotatablely arranged at spacing adjusting screw 71 and abutted with support 90.

Detailed, support 90 includes receiving portion 91 and multiple positioning holes 93.Receiving portion 91 is used to accommodate measuring piece 50, multiple Positioning hole 93 is set along receiving portion 91, and part positioning hole 93 is used to position measuring piece 50 in support 90 by fixed screw 102, Measuring piece 50 is adjustable in the position of receiving portion 91.

Optionally, measuring piece 50 is swept resistance chi.

The principle of the present embodiment is：

The one end of valve rod 101 all the time with detection bar 132 abuts, dynamic clamping head and quiet clamping head 33 due in confined state, Elastic force caused by its deformation all the time along guide rod 31 act axially on displacement frame 11 so that realize valve rod 101 with detection Abutting state keeps constant, does not form up and down motion return difference.When the position of valve changes, the position of valve rod 101 also can Change, and then cause detection bar 132 to drive axial movement of the displacement frame 11 along guide rod 31.

Further, position handle neck wheel 134 also with detection bar 132 together along the axial movement of guide rod 31, due to The movable part 53 of measuring piece 50 can move with position handle neck wheel 134, and this allows for measurement portion 51 can be according to movable part 53 motion change carrys out measurement data, and the data after measurement can pass to the part for needing this part of data, such as CPU.This implementation The change for being swept resistance chi, corresponding to it being resistance that the measuring piece 50 of example is selected, by feeding back the change of resistance to CPU, To reflect the situation of valve.

The position sensor of valve 100 of the present embodiment, will due to by dynamic clamping head and quiet clamping head 33 and 31 coaxial setting of guide rod The change in location of valve rod 101 is acted directly on measuring piece 50 by the transmission of displacement piece 10, and without multiple by elasticity Position part 33 or other components transmit displacement in addition, when using swept resistance chi as measuring piece 50, detect maximum 25mm Stroke only need outside support 90 provide 65mm length space.Overall structure is very exquisite, saves installing space, Enable the space for there are more evolutions using the locator of the position sensor of valve 100, also have reduced size will for some The manufacture for the position detecting device asked provides may.

In addition, guide rod 31 is at least two and diameter parallel, this has just ensured the process moved in valve rod 101 In, the motion of detection bar 132 be able to will not shift under the support of guide rod 31.And detection bar 132 is impacted by some, As moment of torsion, radial forces and axial vibratory forces loading gage lotus effect when, these impact energys are delivered to by displacement frame 11 and led To on bar 31 and dynamic clamping head and quiet clamping head 33, so as to avoid damaging detection bar 132.The dynamic clamping head and quiet clamping head 33 of the present embodiment using Spring.

Support 90 has multiple positioning holes 93, and positioning hole 93 is set along receiving portion 91, and in Fig. 3, positioning hole 93 is edge The length direction for receiving portion 91 is set.Positioning hole 93 can also have other kinds of set-up mode along receiving portion 91, as long as When can make it that measuring piece 50 needs to change in the position of receiving portion 91, measuring piece 50 can be easy to be fixed with support 90.

So, for measuring piece 50 just into modularization, this just brings replaceable benefit, when a swept resistance chi Needed for being unsatisfactory for during the range of measurement, the swept resistance chi of other ranges can be changed, and adjust spacing adjusting screw 71 Position.When swept resistance chi is new using that can also be changed when needing alternating too long.This can just ensure the function of position detection The stroke of valve rod 101 can be more matched, improves accuracy of detection.

In the present embodiment, spacing adjusting screw 71 and 132 concentric setting of detection bar, detection bar 132, which moves to, props up limit Range is reached during the adjusting screw 71 of position.Therefore, spacing adjusting screw 71 can be changed according to the range of measuring piece 50 Position so that the range of movement along the axial direction of guide rod 31 of detection bar 132 is changed.This allows for detection bar 132 It will not be impacted due to motion and to measuring piece 50, for example the swept resistance chi of the present embodiment, due to limited location regulating part 70 Effect, the service life of swept resistance chi by the shocking damage of detection bar 132, will not be at all ensured with this.

Optionally, the buffering for compressing ripple spring pad 1361 and the first nut 1363 composition fixes in detection bar 132 Part 136, this, which allows for position handle neck wheel 134, to be fixed on well on displacement frame 11.When detection bar 132 is by valve rod 101 are headed on when being contacted with spacing adjusting screw 71, and the effect of certain buffering can be played by compressing ripple spring pad 1361.Avoid position handle Neck wheel 134 is by impact failure.

The position sensor of valve 100 of the present embodiment, the motion stabilization of detection bar 132 is improved by two guide rods 31 Property, acted on plus the one-way resetting of dynamic clamping head and quiet clamping head 33 so that detection bar 132 can be straight with the motion of valve rod 101 The movable part 53 that tape splicing moves measuring piece 50 moves so that detects accurate and compact overall structure, reduces the peace shared by entirety Space is filled, but improves overall rigidity.It is aided with the effect of spacing regulating part 70, has ensured the service life of measuring piece 50, And modular measuring piece 50 causes the ability that position sensor of valve 100 has expanded range, use more flexible.

Embodiment 2

Fig. 4, Fig. 5 and Fig. 6 are refer to, present embodiments provides a kind of intelligent positioner 200, including base 210 and implementation Position sensor of valve 100 in example 1, base 210 include detection zone 211, and position sensor of valve 100 passes through with base 210 Fixing screws 103 are fixedly connected, and driving member 13 is located at detection zone 211 and movable relative to base 210.

Specifically, intelligent positioner 200 includes O-ring seal 220, sealing ring cover plate 230 and U-shaped lip seal circle 240. Driving member 13 is arranged in base 210, and U-shaped lip seal circle 240 is sheathed on driving member 13 and is interference fitted with base 210, O-shaped close Seal 220 is arranged at the circumference of U-shaped lip seal circle 240 and is interference fitted with base 210, and sealing ring cover plate 230 is sheathed on biography Moving part 13 and O-ring seal 220 is separated with detection zone 211, separates U-shaped lip seal circle 240 with detection zone 211.

O-ring seal 220 is to realize static seal, that is, the steam or other things of barrier detection zone 211 all the time Matter enters the inner space of the intelligent positioner 200 residing for position sensor of valve 100.And U-shaped lip seal circle 240 then causes Driving member 13 is also avoided that during motion detection and brings the steam of detection zone 211 or other materials into intelligent positioning The inner space of device 200, degree of protection reach IP68/IP69, very reliably！

It is detailed, driving member 13 positioned at one end of detection zone 211 for beyond detection zone 211.Exceeding for driving member 13 is close The part of seal cover plate 230 is the maximum detection stroke of intelligent positioner 200.Such design, it ensure that in detection valve During position, driving member 13 is not hit, and then make it that whole detection structure is more reliable.And the detection bar 132 on base 210 is oriented to Sliding bearing and the positioning reference holes of guide rod 31 make it that the combination of position sensor of valve 100 and base 210 is more firm, ensure The structural rigidity of intelligent positioner 200 so that intelligent positioner 200 can be more durable.

In summary, position sensor of valve 100 sets the guide rod 31 of two or the above on support 90, in conjunction with Dynamic clamping head and quiet clamping head 33 so that the direction moved integrally of displacement piece 10 is very stable, and stable moving direction causes measuring piece 50 Measurement is also more accurate, and when measurement stroke is identical, the overall length dimension of position sensor of valve 100 is smaller, saves Installing space, while rigidity lifting, structure are relatively reliable.Modular measuring piece 50 causes the survey of position sensor of valve 100 Amount scope becomes more flexible and changeable, it is easier to agrees with the valve of different range demands so that detection is further accurate.Intelligence Locator 200 is combined base 210 with position sensor of valve 100, further through O-ring seal 220 and U-shaped lip seal circle 240 effect so that the inside of intelligent positioner 200 completely cuts off with outside sealing, prevents impurity from entering, sealing effectiveness is good.

Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.

Claims (10)

1. a kind of position sensor of valve, it is characterised in that including displacement piece, guide, measuring piece, spacing regulating part and be used for The support being connected with external device (ED)；

The displacement piece, the guide and the spacing regulating part may be contained within the support, and the displacement piece includes position Frame and the driving member for being abutted with valve rod are moved, the driving member is arranged at the displacement frame, and the guide includes leading To bar and dynamic clamping head and quiet clamping head, the quantity at least two and diameter parallel of the guide rod, the displacement frame are mounted slidably In the guide rod, the dynamic clamping head and quiet clamping head along the guide rod be axially set in the guide rod and by the displacement frame with The support compression, the measuring piece are removable installed in the support, and the measuring piece includes measurement portion and movable part, institute Movable part is stated to be connected with the driving member and can pass through the fortune of the movable part with the drive member, the measurement portion Dynamic measure of the change data, the spacing regulating part are used to limit leading along described for the driving member according to the range of the measurement portion To the range of movement of bar axial direction.

2. position sensor of valve according to claim 1, it is characterised in that the driving member includes detection bar and position Handle neck wheel, the position handle neck wheel are used to connect the movable part, and the position handle neck wheel is sheathed on the detection bar The close spacing regulating part one end, the diameter parallel of the axis of the detection bar and the guide rod, the detection bar Other end be used for abutted with valve rod.

3. position sensor of valve according to claim 2, it is characterised in that the driving member, which also includes buffering, to be fixed Part, the buffering fixture include compressing ripple spring pad and the first nut, side and the displacement frame of the position handle neck wheel Fitting, the compression ripple spring pad are worn by the detection bar and are connected to the position handle neck wheel by first nut Side away from the displacement frame.

4. position sensor of valve according to claim 1, it is characterised in that the quantity of the guide rod is two and simultaneously Row is set.

5. position sensor of valve according to claim 1, it is characterised in that the spacing regulating part includes spacing regulation Screw and the second nut, the spacing adjusting screw are spirally connected with the support, and second nut is rotatablely arranged at described Spacing adjusting screw and abutted with the support.

6. position sensor of valve according to claim 1, it is characterised in that the support includes receiving portion and multiple fixed Position hole, described accommodation section are used to accommodate the measuring piece, and multiple positioning holes are set along described accommodation section, the part positioning Hole is used to position the measuring piece in the support, and the measuring piece is adjustable in the position of described accommodation section.

7. the position sensor of valve according to claim 1 or 6, it is characterised in that the measuring piece is swept resistance chi.

8. a kind of intelligent positioner, it is characterised in that including the valve location sensing described in base and claim any one of 1-7 Device, the base include detection zone, and the position sensor of valve is fixedly connected with the base, and the driving member is positioned at described Detection zone and movable relative to the base.

9. intelligent positioner according to claim 8, it is characterised in that the intelligent positioner includes O-ring seal, close Seal cover plate and U-shaped lip seal circle, the driving member are arranged in the base, and the U-shaped lip seal snare is located at described Driving member and with the base be interference fitted, the O-ring seal be arranged at the circumference of the U-shaped lip seal circle and with it is described Base is interference fitted, the sealing ring cover plate is sheathed on the driving member and separates the O-ring seal and the detection zone, The U-shaped lip seal circle and the detection zone are separated.

10. intelligent positioner according to claim 8, it is characterised in that the driving member positioned at the detection zone One end is without departing from the detection zone.