阅读说明：本技术 压差阀装置 (Differential pressure valve device ) 是由 彼特·诺兹 托马兹·扎加尔 朱尔·雷伯尼克 于 2019-12-31 设计创作，主要内容包括：本发明涉及一种压力控制阀,包括：闸门,所述闸门布置在阀室中,所述阀室定位于至少一个流体入口与至少一个流体出口之间,所述闸门适于相对于限定所述压力控制阀的第一开度的阀座移动；与所述闸门连接的隔膜,所述隔膜在所述隔膜上的压差变化下偏转,从而改变所述闸门相对于压力响应阀座的位置,阀室内的闸门引导件包括多个接触部分,所述接触部分与闸门的外壁接触,所述接触部分定位在闸门的圆周处。(The invention relates to a pressure control valve comprising: a gate disposed in a valve chamber positioned between at least one fluid inlet and at least one fluid outlet, the gate adapted to move relative to a valve seat defining a first opening of the pressure control valve; a diaphragm coupled to the gate, the diaphragm deflecting under changes in differential pressure across the diaphragm to change a position of the gate relative to the pressure responsive valve seat, a gate guide within the valve chamber including a plurality of contact portions in contact with an outer wall of the gate, the contact portions positioned at a circumference of the gate.)

1. A pressure control valve (10) comprising:

a shutter (14) arranged in a valve chamber (16) positioned between at least one fluid inlet (11) and at least one fluid outlet (12), the shutter (14) being adapted to move relative to a valve seat (13) defining a first opening degree of the pressure control valve (10);

a diaphragm (15) connected to the gate (14) and which deflects under a change in differential pressure across the diaphragm (15) to thereby change the position of the gate (14) relative to the pressure responsive valve seat (13),

it is characterized in that the preparation method is characterized in that,

a gate guide (100) within the valve chamber (16) includes a plurality of contact portions (101) that contact an outer wall of the gate (14), the plurality of contact portions being positioned at a circumference of the gate.

2. Pressure control valve (10) according to claim 1, wherein the contact portion (101) is formed as a beam extending in a length direction with respect to the movement of the shutter (14) such that contact is made over the entire movement of the shutter under deflection of the diaphragm (15).

3. The pressure control valve (10) according to claim 1 or 2, wherein the contact portion (101) comprises a pointed outer surface (102) forming a contact with the shutter (14).

4. The pressure control valve (10) of claim 3, wherein the pointed outer surface (102) comprises two inclined sides (103) pointing towards each other when seen in a cross-section of the contact portion (101).

5. The pressure control valve (10) of claim 4, wherein the two sloped sides (103) meet at a sharp edge, a rounded edge, or a blunt edge.

6. The pressure control valve (10) of any of claims 2-5, wherein the two sloped sides (103) are arranged at about a 90 degree angle, or a 120 degree angle, or a 150 degree angle with respect to each other.

7. The pressure control valve (10) according to any one of claims 1-6, wherein the contact portion (101) is formed as an integral part of a wall of the valve chamber (16).

8. The pressure control valve (10) of any of claims 1-6, wherein the contact portion (101) is formed as an integral part of a gate guide insert (200) secured within the valve chamber.

9. The pressure control valve (10) according to any of the preceding claims, wherein the gate comprises a wall (300) enclosing a chamber (301) which is open towards the fluid in a first end (302), a first valve opening being defined by the distance between the first end (302) and the valve seat (13), at a second end the wall (300) being connected to an end face (303) connected to the diaphragm (15), wherein an outer surface of the wall (300) contacts the contact portion (101).

10. The pressure control valve (10) of claim 9, wherein the wall (300) comprises a protrusion (310) at a circumference of the wall (300), the protrusion forming a contact with the contact portion (101).

11. The pressure control valve (10) according to claim 9 or 10, wherein the wall (300) comprises at least two protrusions (310) at the circumference of the wall (300), each protrusion forming a contact with each of the contact portions (101).

12. The pressure control valve (10) according to claim 10 or 11, wherein the extension of the protrusion (310) in the gate movement direction (330) ensures contact with the contact portion (101) over the entire extension.

13. The pressure control valve (10) of any of claims 9-12, wherein the wall (300) encloses a chamber (301) housing a biasing element (16) configured to bias the gate (14) in a direction away from the valve seat (13).

Technical Field

The present invention relates to a valve device, in particular a heat exchanger valve device, for example, having a pressure control valve comprising a valve element cooperating with a throttling element and controlling a pressure difference.

Background

In heating systems, the flow rate may be controlled by flow controllers, such as valves, where these flow controllers may be pressure independent valves that improve the efficiency of the system.

However, the operation of these valves may be affected by various causes, such as debris in the working fluid that has been deposited on the closure element or valve element adapted to respond to pressure changes. This will result in reduced efficiency and also in unpredictable valves where actual operation does not match expectations and where the operation range of the unpredictable valve may be limited.

The object of the invention is to prevent the closing element from being restricted in its range of travel by fouling or the like, for example by the outer surface wall being calcified. The invention relates in particular to such pressure control valves in which the closing element is cup-shaped.

Disclosure of Invention

The object of the invention is solved by the features indicated in the claims, in particular in claim 1. This includes introducing a pressure control valve comprising: a gate disposed in a valve chamber positioned between at least one fluid inlet and at least one fluid outlet, the gate adapted to move relative to a valve seat defining a first opening degree of the pressure control valve; a diaphragm coupled to said gate, said diaphragm deflecting in the event of a change in differential pressure across said diaphragm to thereby change the position of said gate relative to a pressure responsive valve seat; wherein the gate guide within the valve chamber includes a plurality of contact portions that contact an outer wall of the gate, the plurality of contact portions being positioned at a circumference of the gate.

In one embodiment, the contact portion is formed as a beam extending lengthwise with respect to movement of the gate such that contact is made over the entire movement of the gate under deflection of the diaphragm.

In one embodiment, the contact portion includes a pointed outer surface forming a contact with the gate.

In one embodiment, the pointed outer surface comprises two sloping sides pointing towards each other when seen in a cross-section of the contact portion.

In one embodiment, the two sloped sides meet at a sharp edge, a rounded edge, or a blunt edge.

In one embodiment, the two sloped sides are arranged at an angle of about 90 degrees, or 120 degrees, or 150 degrees with respect to each other.

In one embodiment, the contact portion is formed as an integral part of the wall of the valve chamber.

In one embodiment, the contact portion is formed as an integral part of a gate guide insert secured within the valve chamber.

In one embodiment, the gate comprises a wall surrounding a chamber, the chamber being open to fluid in a first end, the first valve opening being defined by a distance between the first end and the valve seat, at the second end the wall being connected to an end face connected to the diaphragm, wherein an outer surface of the wall contacts the contact portion.

In one embodiment, the wall comprises a protrusion at a circumference of the wall, the protrusion forming a contact with the contact portion.

In one embodiment, the wall comprises at least two protrusions at the circumference of the wall, each protrusion forming a contact with each of the contact portions.

In one embodiment, the extension of the one or more protrusions in the shutter moving direction ensures contact with the contact portion over the entire extension range.

In one embodiment, the wall encloses a chamber housing a biasing element configured to bias the gate in a direction away from the valve seat.

Drawings

FIG. 1 is a schematic illustration of a pressure control valve;

fig. 2A, 2B are side and top views of a gate connected with a gate guide according to a first embodiment;

3A-3D are close-up views of a pointed outer surface of a contact portion, according to various embodiments;

FIGS. 4A and 4B are different embodiments of the outer surface wall of the gate with one and two projections, respectively; and

fig. 5A and 5B are embodiments of a gate guide formed with respect to an outer surface wall of a gate.

Detailed Description

Fig. 1 schematically illustrates a pressure control valve 10 comprising: a gate 14 or valve element disposed in a valve chamber 16 positioned between at least one fluid inlet 11 and at least one fluid outlet 12. The shutter 14 is adapted to move relative to a valve seat 13 defining a first opening degree of the pressure control valve 10 based on a distance between the two parts. Thus, the fluid passes through the pressure control valve 10 from the inlet 11 to the outlet 12 at a flow rate regulated in the usual manner through a valve opening formed between the valve seat 13 and the shutter 14.

In the figure, an optional further flow control valve formed by a flow control valve element 30 is positioned between the inlet 11 and the outlet 12, the flow control valve element 30 cooperating with a second valve seat 32 and being connected at a first end of a valve pin 31, a second end of which is optionally connected to an actuator.

The shutter 14 is fixed to a diaphragm 15 which is in pressure contact with a first pressure chamber 21 on a first side, thereby exposing the diaphragm to a first pressure, and is exposed to a second pressure by contact with a second pressure chamber 22 on a second side, such that a change in the pressure difference between the first and second pressures causes deflection of the diaphragm 15, thereby changing the position of the shutter 14 relative to the pressure responsive valve seat 13. The second pressure chamber 22 may be in contact with the inlet 11 side or the outlet 22 side through the pressure conduit 20, whereby the deflection of the gate 14 adapts the flow to maintain pressure balance over the flow control valve. In the embodiment shown, the third pressure on the outlet side will be in contact with the wall 300 of the shutter 14 and the part of the diaphragm 15 formed outside the contact of the diaphragm 15 with the shutter 14, and the contribution of this third pressure will therefore have equal forces in both directions, thus cancelling each other out as the pressure areas of the two opposite sides of the diaphragm 15 are made equal.

In the illustrated embodiment, the gate is substantially cup-shaped. In this embodiment, the gate comprises a wall 300 which encloses a chamber 301 which is open towards the fluid in a first end 302. Thus, the chamber 301 may form the first pressure chamber 21 and be in contact with the fluid stream flowing through the pressure control valve 10, for example also in contact with the outlet side of the flow control valve, or in the opposite embodiment in contact with the inlet side of the flow control valve.

In this embodiment, the chamber 301 houses a biasing element 16 configured to bias the shutter 14 in a direction away from the valve seat 13.

The first valve opening is defined by the distance between said first end 302 of the wall 300 and said valve seat 13.

At the second end, the wall 300 is connected to an end face 303, which is further connected to the diaphragm 15, so that the outside of the end face will be in pressure communication with the second pressure chamber 22.

To guide the gate 14 under deflection of the diaphragm 15 so that the gate follows a generally straight line without deflecting under the influence of fluid flow through the valve 10, the outer surface of the wall 300 contacts the gate guide 100.

In one embodiment, the gate guide 100 is formed as an integral part of the wall of the valve chamber 16.

In another embodiment, the gate guide 100 is formed as an integral part of a gate guide insert 200 secured within the valve chamber, such as shown in fig. 2A. Although shown generally in the drawings as a gate guide insert 200, any of these embodiments can be applied to the gate guide 100 as an integral part of the wall of the valve chamber 16.

Fig. 2A is a side view of the shutter 14 in contact with the contact portion 101 of the shutter guide 100, and fig. 2B is a top view of the shutter 14 in contact with the contact portion 101 of the shutter guide 100, and fig. 2B shows that the shutter guide 100 has 6 portions surrounding the shutter 14, and each portion includes the contact portion 101 in contact with the outer wall 300 of the shutter 14. Although this illustration discloses 6 sections of the gate guide 100, this is for illustration only, and any number that ensures stable movement 330 of the gate 14 will be suitable for use with the present invention.

The gate guide 100 may be formed as a "beam" extending in the gate movement direction 330, the "beam" having a length that ensures contact throughout the movement, thereby helping to maintain the movement.

The contact portion 101 may have a relatively small contact surface area with the wall 300 to reduce friction during movement. Another advantage is that the shape of the contact portion 101 has been found to prevent problems when a settlement (e.g. surface calcification) occurs on the outer surface wall 300 of the gate 14. Since during operation the shutter 14 can stay in a narrower movement for small fluctuations of the pressure difference experienced over the membrane 15, the sediment can be such that, once a higher pressure difference occurs, a greater movement of the shutter 15 is prevented, thus preventing pressure equalization of the shutter 15.

The embodiment of FIG. 2A shows a gate 15 formed with a first outer diameter 305 that is wider than a second outer diameter 306 with a transition region 307 between the first outer diameter and the second outer diameter. The contact portion 101 is arranged such that it contacts only the first outer diameter 305 portion.

In one embodiment, such as the one shown in fig. 2A, the contact of the contact portion 101 is arranged on the wall 300 such that when the pressure difference increases, the contact portion 101 will scrape off sediment such as foulants, elemental calcifications, etc.

Fig. 3A-3D show three different embodiments of such a shape of the contact portion 101, such that said contact portion is formed to comprise a pointed outer surface 102 forming a contact with the shutter 14, and wherein the pointed outer surface 102 comprises two inclined sides 103 pointing towards each other when seen in a cross-section of said contact portion 101.

In fig. 3A, an embodiment is shown in which two inclined sides 103 are directed towards each other at an angle of about 90 degrees. In the illustration, the two inclined sides 103 intersect with a rounded edge. Alternatively, the edge may be a sharp edge or a blunt edge.

In fig. 3B, an embodiment is shown in which two inclined sides 103 are directed towards each other at an angle of about 120 degrees. In the illustration, the two inclined sides 103 intersect with a rounded edge. Alternatively, the edge may be a sharp edge or a blunt edge.

In fig. 3C, an embodiment is shown in which the two inclined sides 103 point towards each other at an angle of about 150 degrees. In the illustration, the two inclined sides 103 intersect with a sharp edge. Alternatively, the edge may be a rounded edge or a blunt edge.

In fig. 3D, an embodiment is shown in which the two inclined sides 103 point towards each other at an angle of about 120 degrees. In the illustration, the two sloped sides 103 intersect with a blunt edge. Alternatively, the edge may be sharp.

Any sharp, rounded or blunt edge embodiment may be applied to any angle of the two inclined sides 103 relative to each other, just as these may have any angle between 40 and 180 degrees.

Fig. 4A and 4B show an embodiment of a shutter 14 to be applied to any of the embodiments as previously disclosed, wherein the outer surface wall 300 comprises protrusions 310 at the circumference of said wall 300, said protrusions forming a contact with said contact portion 101, wherein two such protrusions 310 are shown in fig. 4A and one such protrusion 310 is shown in fig. 4B. This has been shown to further improve the operation since the protrusion reduces the contact area of the contact portion 101 with the outer wall surface 300.

For example, referring to the embodiment of fig. 4B, in one variation, the extension of the protrusion 310 in the shutter moving direction 330 is such that the protrusion contacts the contact portion 101 over the entire extension. This ensures that these areas of the outer wall surface 300 are never exposed for scaling, sedimentation, calcification or the like. Thereby, when the outer surface wall 300 slides along the contact portion 101, a free track for an unimpeded movement is ensured. This deformation can naturally extend to the presence of a plurality of such protrusions 310.

In an alternative embodiment, instead of forming the shutter guide 100 and the contact portion 101 with respect to the inner wall of the valve chamber 16, the shutter guide 100 and the contact portion 101 may be formed with respect to an outer surface wall 300 of the shutter 14 contacting the inner surface wall of the valve chamber 16. This may be done, for example, simply by forming the contact portion 101 as a pointed outer surface 102 protruding from the wall 300, or, as shown in fig. 5A and 5B, forming the contact portion 101 as an insert element 201 secured to the outer surface wall 300 (e.g., secured in a recess).