SE535547C2 - Valve with actuator - Google Patents

Abstract

Device for fate control of a medium in a heating or cooling system where the device is a complete control valve (1) which comprises an actuator (10) which is arranged to surface both a first throttle member in the form of an inner cone (13) and a second throttle member in the form of an outer cone (15), axially in the direction of and from the valve seat (6) of the control valve, respectively. Fig. 1.

Description

25 30 35 535 547 function. Furthermore, these actuators are handled in different ways, for example rotated and displaced, respectively, in order to bring about corresponding rotational and displacement movements of the different throttling members of the valves, which are arranged for each function. For example, there are solutions where a special presetting tool is operated to effect an axial movement of a throttle member, while a valve knob is operated to rotate / rotate another throttle member, for example a ball or veil to close the valve flow through the valve.

Disclosure of the Invention In the present invention, the above problems have been solved, by providing the presettable control valve with only one actuator, which is arranged to move both a first throttle member in the form of an inner cone, and a second throttle member in the form of an outer cone. axially in the direction of and from the valve seat of the control valve, respectively. This is thus achieved with a single actuator and only with one type of movement, preferably rotation of the actuator. This has the advantage that only one actuator needs to be handled in order to achieve all the functions included in the valve, and that the handling of said actuators is always done in the same way, preferably rotation, in order to achieve all functions.

According to a preferred embodiment of the invention, the two throttling means, the inner cone and the outer cone, respectively, are moved axially in the direction of the valve seat, when the actuator is rotated in a first operating position, which constitutes the shut-off position of the control valve. When the flow opening of the valve for fl uid fl fate is completely shielded by the outer cone, the fl uid flow through the control valve ceases. As both the inner and outer cones are moved at the same time in this position, the presetting of the valve will not be affected by the closing movement, which is an advantage, since the valve does not have to be preset again after it has been closed.

By rotating the actuator in a preferred second operating position, which constitutes the presetting position of the control valve, only the inner cone is moved axially in the direction of or from the valve seat, whereby the control valve is preset. This second operating position is clearly different from the first operating position so that the operator knows with certainty that the actuator when rotating in this second position only performs the presetting function. The advantage over older solutions is still that with one and the same actuator and with the same handling, namely rotation, all functions of the control valve are performed. In a preferred embodiment, the actuator is slidably arranged between different positions, in which different functions can be performed. The operating member is preferably arranged around the valve spindle, but freely axially movable and rotatable relative thereto. A valve spindle is a shaft in which the regulating part, usually a cone, is coordinated with a damper actuator mounted on the control valve for motorizing the control function of the valve. The functions performed in the different modes are according to the preferred embodiment normal mode / control mode, presetting and shutdown but are not limited to only these functions but can be completely different functions, depending on needs and valve type. According to the invention, the actuator is advantageously mounted from the factory and arranged so that it never has to be removed from the valve, whether it is to be provided with an actuator or not. Consequently, the "tool" is always returned to the valve upon delivery, during commissioning and at all times thereafter. The advantages are then that service personnel do not have to spend time looking for missing tools of all possible different variants and also that the handling / maneuvering of the valve is facilitated as all functions can be performed with one and the same actuator. Furthermore, it is entirely possible to deliver an attached actuator, mounted under factory efficiency instead of being controlled by an on-site installation, with increased costs for installation and poorer working environment conditions. The installation time is thus significantly shortened.

The design is not limited to only this type of control valve but can advantageously be applied to a number of different types of valves where a stationary tool is desired arranged for different functions.

According to a further preferred embodiment of the invention, the actuator is rotatable in any position along its axis of rotation, in and between the end positions of the actuator. This means that the number of functions is not limited by the possible position positions of the actuator, but the valve itself can be provided with the number of functions that are technically possible from a valve design point of view and that are needed. Normally and at present, the need for operating modes is usually in the order of 2-3 pieces, but the invention is not limited to this number, but the operating modes can be fl er. Older solutions usually include a function mode where the preset tool is used.

According to a preferred embodiment, the invention comprises two operating positions, a first remote position end position in relation to the valve housing and a second end position closest to the valve housing. The actuator is then displaceable between these two end positions and rotatable in the respective position. With one and the same actuator, which in addition, as mentioned above, is always available, two function modes are thus obtained, in which any function can be included.

According to a preferred embodiment, the invention comprises a resilient member, preferably a return spring. In its mounted position, the resilient member has a clamped force directed substantially towards the first distal end position of the actuator in relation to the valve housing and which force is transmitted either directly or indirectly to the actuator. As a result, the actuator always returns to its first distal end position, which can also be called its original position or nunnel position. In this way it is ensured that the function provided in this original position or normal position is always available except when a larger, substantially opposite force acts on the actuator, for example pressing the actuator in the direction of the valve housing by hand. In the same way the advantage is obtained that this first remote position becomes distinct and the "operator" knows with certainty that the control valve is in its first operating position, after which, for example, the actuator is rotated and the function is performed in one way or another.

According to a further preferred embodiment, the actuator is only displaceable to its second end position, closest to the valve housing, by an applied external axial force mainly in the direction of the valve housing. This force is for practical reasons usually in the form of manual force where the "operator" pushes the actuator in the direction of the valve housing, and when the end position is reached the arranged function is available, and preferably the actuator is rotated in this position to perform the function. Some known solutions have problems finding the right position for the presetting tool, for example, and it can be difficult to access at the right angle, for example with an Allen key and also difficult to access to see what you are doing. In combination with poor lighting around the control valve, it is even more difficult to perform the steps. These two distinct positions of the invention eliminate these difficulties.

In a preferred embodiment of the invention, the first remote end position of the operating member relative to the valve housing comprises the control position of the complete control valve. In this position the actuator is freely movable and rotatable relative to the valve stem, which makes the control of the valve possible when the actuator is in this position. A motorized actuator mounted on the control valve engages the valve stem and the actuator communicates with sensors in the ids uid system and receives signals as to whether the load / power output varies in the part that the current control valve regulates, after which the damper actuator moves the spindle to move axially in direction the valve seat, depending on whether the need for fate increases or decreases. The spindle in turn is in engagement with the valve's regulating cone, the inner cone, which is arranged to regulate the fate through the valve. According to the invention, the regulation takes place in that the inner cone comprises an opening with a specific geometry, which opening cooperates with the valve seat which shields the opening more or less depending on the load. In the first remote position of the actuator, ie the control position of the complete control valve, the actuator is in a rest position. The actuator is only used on those occasions when manual handling is required, in connection with commissioning. inspection or, for example, shutdown of all or parts of the facility.

In a preferred embodiment of the invention, the second end position of the actuator, closest to the valve housing, comprises the preset position of the complete control valve. In this position the actuator is also freely movable and rotatable relative to the valve stem, whereby the valve stem is not affected by the movement and rotation of the actuator. By pressing the actuator in the direction of the valve housing, to its end position in this direction, the actuator engages with cooperating parts in the valve housing and the valve neck whereby a rotational movement of the actuator in this position is transmitted to an axial movement of an inner cone, which is arranged to be preset in a position relative to the valve seat so that the desired maximum fl uid fl fate through the valve, i.e. the desired Kvs value, is obtained. Because a preferred form of the device comprises a clamped force, preferably a return spring, which acts on the actuator, the actuator always returns to its first distal end position, its normal position after the pressing force has been removed. An advantage of this arrangement is that the position for presetting is very clear as it is an end position, in which a simple grippable actuator is arranged to perform the function instead of using Allen keys and the like in older solutions.

In a preferred embodiment of the invention, the first remote end position of the actuator relative to the valve housing also includes the shut-off position of the complete control valve. In this position, as previously described, the actuator is freely movable and rotatable relative to the valve stem, which makes the control of the valve possible when the actuator is in this position. By the actuator in this position gripping cooperating parts in the valve housing and the valve neck, a rotational movement of the actuator in this first distal end position is transmitted to the cooperating parts so that these act on an outer cone arranged in the valve neck. The outer cone is slidably arranged in the valve neck between a position at a distance from the valve seat and that another position adjacent to the valve seat and when the actuator is rotated in its first distal position the movement is transmitted to the outer cone which is displaced axially towards the valve seat to finally completely shield both inner cone opening and a flow opening in the valve housing. The flow opening is arranged in close proximity to the valve seat. Since the actuator preferably comprises a return spring or the like which ensures that the actuator returns to this first distal end position when no external force (hand force) affects it, the shut-off function is always available with the complete control valve, in this position. Thus, the valve does not have to be set manually in this position to be able to perform this function and the valve is always possible to close completely for the flow of fl uid regardless of whether it is equipped with an actuator or not.

According to a preferred embodiment of the invention, the actuator is preferably a valve knob.

The valve knob itself is well known in all forms of valves in WS technology, which is an advantage for adjustment / operating personnel who are then well acquainted with this tool and how it is handled. Older solutions have, as mentioned earlier, various different types of more or less custom-made tools for, for example, presetting the Kvs value or other functions. These tools often have to be inserted into a designated groove, sleeve or other instructions, often partially hidden or difficult to access.

As the valves are usually mounted on pipes in suspended ceilings or in shafts, the lighting around the valve is substandard, which further complicates the use of special tools or Allen keys or the like, where adjustment / operating personnel must then try to find the right position for the tool. A sturdy and easily gripable valve knob clarifies and simplifies the adjustment of the valve and this valve knob is advantageously provided with some form of scale or other clear indication that indicates the operating positions / settings of the valve.

Thus, both previously known advantages are achieved together with the new advantages and in one and the same valve, have been obtained: - A single actuator for all functions in the valve, which in the preferred embodiment is presetting, shut-off and control . - the valve preset does not change when the genom outflow through the valve is switched off.

- A single actuating tool which is advantageously mounted on the valve from delivery, during operation and for the entire life of the valve.

- Faster installation and improved installation ergonomics and thus lower installation costs and with the pre-setting tool / shut-off tool / actuator always being mounted, and that the valve is advantageously also delivered with mounted actuator.

The constructive design of the present invention is described in detail below.

In addition, the invention advances the state of the art in the field in various respects. This is realized in the present invention in that a device of the type described below is substantially as described in the characterizing part of claim 1.

Further features and advantages of the invention will become apparent from the following description taken in conjunction with the accompanying drawings, which show a preferred, but not limiting, embodiment of the invention.

Brief description of the figures In detail, in diametrical, partly schematic cross-sections or perspective views: - Fig. 1 shows the actuator in its first, distal end position (a), in relation to the valve housing.

Fig. 2 shows the actuator in its second end position (b), closest to the valve housing.

Detailed description of the gears Fig. 1 shows a complete control valve 1 comprising an actuator 10, preferably a valve knob, in its first operating position, a first distal end position (a), relative to a valve housing 2 of the complete control valve 1, and this first operating position constitutes control valve shut-off position.

The actuator 10 is arranged on the valve neck 5 of the complete control valve 1, which connects at an angle to the valve housing 2 of the control valve. The valve neck 5 comprises a valve insert 9 whereby a valve spindle 11 is preferably centrally mounted. The complete valve insert 9 also comprises a sleeve-shaped and cylindrical inner cone 13 for regulating and presetting the valve's selectable Kvs value. which inner cone is fixedly arranged with the valve stem 11 and the inner cone has an open bottom for inflow of fl uid and an opening 14 at its fl ank, for outflow of fl uid. Furthermore, the complete valve insert 9 comprises a sleeve-shaped and cylindrical outer cone 15, which partially encloses the upper part of the inner cone 13 and this outer cone is arranged for, among other things, shutting off the fluid flow through the complete control valve 1. The cylindrical outer cone 15 is slidably arranged. 13 and the outer cone 15 are displaceable relative to each other. The complete control valve 1 also comprises an inlet connection 3 and an outlet connection 4 as well as a flow opening 7 located in the lower part of the valve neck 5 adjacent to a valve seat 6, and two connections for measuring nipples 8. The fluid flows through during operation of the valve from the inlet connection 3 via the inner cone 13, in through its bottom and further out through the inner cone opening 14, then further through the flow opening 7 and then to the outlet connection 4. In the first, distal end position (a) the top of the actuator 10 connects to an adapter 18 which is fixed arranged against the complete valve insert 9. The adapter 18 is arranged to function as a bracket for a mounted actuator, which is not shown. Since the top of the actuator 10 connects to the adapter 18, a distinct distal end position is obtained for the axial movement of the actuator along the valve stem 11.

The actuator 10 is always freely axially movable and rotatable relative to the valve stem 11 regardless of position. two geared intermediate gears 19,21 which in turn engage with a shut-off screw 16 and a presetting screw 17, respectively. This intermediate gear 19 is in turn engaged with a rotatable and toothed so-called sol 22, which in turn is in engagement with the shut-off screw 16. Upon rotation of the actuator 10, the rotational movement is thus transmitted to the shut-off screw 16, which by a threaded joint 23 transmits the rotational movement to an axial movement of the presetting screw 17. The presetting screw 17 is fixedly arranged with the outer cone 15 and therefore the outer cone 15 will also be moved axially and together with the inner cone 13. To close the valve 1 completely for flow, the outer cone 15 is moved axially towards the valve seat 6 until the entire flow 7 is completely shielded by the outer cone 15. Thus, a shut-off function is obtained and this function is operated with the actuator 10 in its first operating position, the first, distal end position (a).

The first, far end position (a) also includes the control position of the complete control valve 1. As described above, the actuator 10 is freely rotatable relative to the valve stem 11, which means that the control function of the valve is not affected by any axial movement or rotation of the actuator 10, nor vice versa, that the control affects the actuator 10 in this position. An mounted actuator, not shown, communicates with sensors in the system where the complete control valve 1 is included and the actuator, which is engaged with the valve stem 11, moves it axially in the direction of or from the valve seat 6, depending on load and need for increased or decreased fate. the opening 14 of the inner cone 13 is thus more or less shielded by the valve seat 6, whereby the flow through the valve is changed. Thus, when the actuator 10 is in its first, distal end position (a), the valve embodiment includes two valve functions - control and shut-off.

However, it is quite possible according to the invention that completely different functions are included in this position, depending on the type of valve on which the actuator is mounted. The invention also comprises a resilient member, preferably a return spring 12 which is arranged to return the actuator 10 to its first, distal end position (a). The return spring 12 in its mounted position has a clamped force directed substantially towards the first distal end position (a) of the actuator 10 relative to the valve housing 2 and the force is transmitted indirectly to the actuator 10. Thereby the actuator 10 always returns to its first distal end position (a) and This ensures that the function (s), which are arranged in this position, are always available in all cases except when an externally applied, opposite force, for example hand force, acts on the actuator 10 by pressing the actuator in the direction of the valve housing 2. If the actuator 10 is pressed towards the valve housing 2, the actuator assumes its second end position (b).

Fig. 2 shows the actuator 10, preferably the steering wheel, in its second actuating position, its second end position (b), closest to the valve housing 2, and this second actuating position constitutes the presetting position of the control valve.

In order to move the actuator 10 to the second end position (b), which constitutes the second actuating position, the actuator is pressed towards the valve housing 2, for example by hand, the bottom of the actuator 10 connecting to a cover 20, whereby a second distinct operating position enters, a second end position (b), closest to the valve body 2.

In the second end position (b), the actuator 10 is via teeth, arranged at the inside of the actuator (not shown), in engagement with a geared intermediate gear 21 which in turn engages with the presetting screw 17. When preset, the outer cone 15 is again in its uppermost, in relation to the valve seat, remote position. The presetting means that the position / distance of the inner cone opening 14 in relation to the valve seat 6 is set.

By a rotational movement of the actuator 10 in this second end position (b), the rotational movement is transmitted via the intermediate gear 21, which in turn is in engagement with a rotatable and toothed so-called sol 24, which in turn is engaged with the presetting screw 17 and thus the rotational movement is transmitted of the actuator 10 to the presetting screw 17. This is rotatable but does not move axially in the valve neck 5 during the presetting. The lower part of the presetting screw 17 comprises an internal thread which cooperates with an external thread arranged on the upper end of the inner cone 13, and these threads thus form a threaded connection 25, and by the rotation of the presetting screw 17, the rotation is transmitted to an axial movement of inner cone 13. Thus, for fl, the inner cone is moved axially in the direction of or from the valve seat 6. Note that the outer cone 15 is not actuated but remains in its upper position during presetting.

When the presetting is completed and the valve is ready for adjustment, the mutual position, given by the presetting, between the inner and outer cones will not change. the inner cone 13 comprises the opening 14 for the flow of fl uid, which opening determines the control characteristics of the complete control valve 1, and by the opening 14 of the inner cone 14 being shielded more or 535 547 less by the valve seat 6, the maximum flow of the control valve, its Kvs value, is set in this mode. second end position (b). The complete control valve 1 thus comprises a function for presetting the Kvs value and this function is available in that the actuator 10 assumes its second operating position, its second end position (b), closest to the valve housing 2. However, it is entirely possible according to the invention to completely other functions are included in this position, depending on the type of valve on which the actuator is mounted. 10 15 20 25 535 10 PARTS LIST 1 = control valve 2 = valve | housing 3 = inlet connection = outlet connection 5 = valve housing 6 = valve seat 7 = flow-through opening 8 = connection for measuring nipple 9 = valve insert 10 = actuator 1 1 = valve stem | 12 = return fi spring 13 = inner cone 14 = inner cone opening 1 5 = outer cone 16 = shut-off screw 17 = preset screw 1 8 = adapter 19 = me || andrev, shut-off 20 = cover 21 = me | 24 = sun, preset 25 = threaded joint 547

Claims (12)

10 15 20 25 35 535 547 11 PÅTENTKRÅV Device for fate control of a medium in a heating or cooling system where the device is a complete control valve (1), with a valve housing (2) which comprises an inlet connection (3), an outlet connection (4), a valve neck (5) in which a valve seat (6) and a flow opening (7) are arranged and at least one connection for measuring nipple (8) for measuring pressure and / or temperature levels, wherein in the valve neck (5) a valve insert (9) is arranged in which a valve stem (11) is arranged, and the valve insert (9) comprises a first throttling member in the form of an inner cone (13) and a second throttling member in the form of an outer cone (15), characterized in that the outer cone (15) is sleeve-shaped and cylindrical and encloses partly the upper part of the inner cone (13), and the control valve (1) comprises an actuator (10) which is arranged to move both the inner cone (13) and the outer cone (15) axially in the direction of and from the valve seat (6), respectively, by a rotational movement of the actuator (10). ) in different m operating positions, where the actuator (10) is arranged via teeth to, depending on the operating position, engage with either a first geared intermediate gear (19), or a second geared intermediate gear (21), w '| ka and intermediate gear (19, 21), respectively. are arranged to transmit the rotational movement to toothed sunbeams (22, 24) coordinated with respective intermediate gears (19, 21), whereby the soles (22, 24) further transmit the rotation to, with respective sun (22, 24) coordinated shut-off screw (16) and preset screw (17), and where the rotation of the shut-off screw (16) is transmitted to an axial movement of the preset screw (17) via a first threaded connection (23) arranged between the shut-off screw (16) and the preset screw (17), and by the preset screw (17) being fixed arranged with the outer cone (15) for fl the outer cone (15) is thereby moved axially in the direction of respective from the valve seat (6), and the rotation of the presetting screw (17) is transmitted to an axial movement of the inner cone (13) , in the direction of and from the valve seat (6), respectively, via a second threaded connection (25) arranged between the presetting screw (17) and the inner cone (13). Device according to claim 1, characterized in that the actuator (10) is arranged that in a first actuating position, which constitutes the shut-off position of the control valve (1), to move both the inner cone (13) and the outer cone (15) axially towards the valve seat (6) , in that this actuator (10) in this first actuating position engages the first intermediate gear (19), and a rotational movement of the actuator (10) in the first actuating position is thereby transmitted to an axial movement of the presetting screw (17) and thus also the outer cone (15). ) and furthermore also a simultaneous axial movement of the inner cone (13) through the axial movement of the presetting screw (17), when the presetting screw (17) through the second threaded connection (25) is fixedly arranged with the inner cone at the axial movement, and the outflow through the control valve ( 1) ceases when the flow opening (7) is completely shielded by the outer cone (15). Device according to one of Claims 1 to 2, characterized in that the actuator (10) is arranged in a second actuating position, which constitutes the preset position of the control valve (1), to move the inner cone (13) axially in the direction of or away from the valve seat (6). in that the actuator (10) in this second actuating position engages the second intermediate gear (21), and a rotational movement of the actuator (10) in the second actuating position is transmitted to an axial movement of the inner cone (13). ), to obtain the preset of the control valve (1). Device according to one of Claims 1 to 3, characterized in that the actuator (10) is axially displaceable relative to the valve stem (11) between at least two positions, in which respective positions functions of the complete control valve are changed / performed. Device according to one of Claims 1 to 4, characterized in that the actuator (10) is rotatable in any position along its axis of rotation. Device according to one of Claims 1 to 5, characterized in that the operating positions of the actuator (10) are two in number, a first distal end position (a), relative to the valve housing (2), and a second end position (b), nearest the valve body. Device according to one of Claims 2 to 6, characterized in that the complete control valve (1) comprises a resilient member, preferably a clamped return spring (12), the spring force of which ensures that the actuator (10) always returns to its first distal end position ( a) when an externally applied axial force ceases. Device according to one of Claims 3 to 7, characterized in that the actuator (10) is displaceable to the second end position (b) by means of an axial force in the direction of the valve housing, preferably by means of manual force. Device according to one of Claims 2 to 8, characterized in that the first distal end position (a) comprises the normal position / control position of the complete control valve (1). Device according to one of Claims 3 to 9, characterized in that the second end position (b) comprises the preset position of the complete control valve (1), in which position the maximum value through the valve, its Kvs value, is determined. Device according to one of Claims 2 to 10, characterized in that the first distal end position (a) comprises the shut-off position of the complete control valve (1). Device according to one of Claims 1 to 11, characterized in that the actuator (10) is a valve knob.