Pressure regulating valve
By combining the conical valve body and seat with a multi-pressure chamber structure, the problems of large adjustment force and seal wear under high pressure are solved, realizing a pressure regulating valve with low force adjustment and high reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PAUL HAMMELMANN MASCHINENFABRIK GMBH
- Filing Date
- 2021-04-26
- Publication Date
- 2026-05-29
AI Technical Summary
Existing pressure regulating valves require a large adjustment force to operate the valve body under high pressure conditions, and the easily worn dynamic high-pressure contact seals cause reliability issues.
The valve body and seat are designed with a conical shape. By combining the throttling gap and multiple pressure chambers, the axial force of the high-pressure medium on the valve body is reduced. The opening of the throttling gap is controlled by an actuation unit to avoid high pressure contact with the seal.
It significantly reduces the adjustment force required for the valve body, reduces wear on the seals, and improves the reliability and service life of the valve.
Smart Images
Figure CN115516237B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a pressure regulating valve. Background Technology
[0002] Common pressure regulating valves are known, for example, from EP 1 450 082 B1.
[0003] These pressure regulating valves are used in high-pressure technology to mitigate pressure fluctuations in high-pressure systems, such as those caused by the switching on or off of high-pressure consuming devices like high-pressure spray guns. Furthermore, these pressure regulating valves are used to control pressure, for example, to control pressure accumulation or pressure reduction with a predetermined pressure gradient.
[0004] Besides their applications in high-pressure technology, such pressure regulating valves can also be used, for example, in process engineering to homogenize media. In this application, the homogenization of the media conveyed through the pressure regulating valve is achieved within the throttling range of such a valve, i.e., the viscosity or consistency of the media is affected.
[0005] Such pressure regulating valves typically have a valve housing with an inlet passage for allowing fluid media to pass through under system pressure and at least one outlet passage. A valve seat is arranged within the valve housing, and the valve body (also referred to as a control pin) is axially movable within the valve seat and can be adjusted by means of an actuation unit so that the valve body moves out of the valve seat due to an increase in system pressure, allowing a corresponding amount of fluid media to flow through the pressure regulating valve until the system pressure drops back to a predetermined level.
[0006] One problem with pressure regulating valves known in the prior art, especially those used in ultra-high pressure technology exceeding 500 bar, is the large adjustment force required to actuate the valve body under operating conditions. These large adjustment forces are caused by the applied operating pressure and the pressure projection area of the valve body in the adjustment direction. Summary of the Invention
[0007] The object of the present invention is to provide a pressure regulating valve whose valve body can be controlled or moved with significantly lower adjustment force, and in addition, it can abandon the use of easily worn dynamic high-pressure contact seals.
[0008] This objective is achieved by a pressure regulating valve according to one aspect of the invention.
[0009] The pressure regulating valve according to the invention for a fluid medium under a system pressure, preferably higher than 500 bar, has a valve housing in which an inlet passage for the medium and at least one outlet passage communicating therewith are provided.
[0010] The pressure regulating valve also has a valve seat disposed within a valve housing and having a conical receiving container, in which an axially movable valve body having at least a partially conical lateral outer surface is mounted. An actuation unit is operatively connected to the valve body.
[0011] The flow of the medium from the inlet channel to at least one outlet channel can be regulated in this case by the interaction between the valve body and the valve seat.
[0012] In the valve seat, the first pressure chamber is disposed adjacent to the lateral outer surface of the valve body, and the throttling gap extends from the first pressure chamber along the lateral outer surface of the valve body in the direction of movement of the valve body in each case.
[0013] In this case, the conical lateral outer surface of the valve body extends through the corresponding conical receiving container of the valve seat on both sides of the pressure chamber in the direction of movement of the valve body.
[0014] In the pressure regulating valve according to the invention, the throttling regions provided on both sides of the first pressure chamber and formed by corresponding throttling gaps between the lateral outer surface of the valve body and the inner surface of the valve seat reduce the pressure medium that has entered through the inlet by being discharged through the two throttling gaps.
[0015] Under high pressure, the medium always moves along the lateral outer surface of the valve body, thereby enabling the valve body to be adjusted with significantly less force, because due to the taper of the valve body, only a small fraction of the force exerted by the high-pressure medium on the valve body acts in the axial direction or adjustment direction of the valve body.
[0016] Advantageous embodiments and variations of the present invention are another aspect of the invention.
[0017] According to an advantageous embodiment of the invention, a second pressure chamber is formed radially outside the first pressure chamber in a region adjacent to the valve seat on the inner circumference of the valve housing, and an inlet passage leads to the second pressure chamber.
[0018] Through this second pressure chamber, the operating pressure applied by the fluid medium also acts on the outer surface of the valve seat, thereby reducing the widening caused by the deformation of the throttling gap due to the high pressure mentioned above.
[0019] The first and second pressure chambers are preferably annular.
[0020] In a preferred embodiment variation of the pressure regulating valve according to the invention, the valve seat is mounted in a manner that prevents it from moving within a receiving container of the valve housing. Alternatively, the valve seat may also be designed as a component of the valve housing.
[0021] According to a preferred embodiment of the pressure regulating valve of the present invention, the actuation unit can be controlled via a control unit that measures the system pressure, wherein the valve body can be moved to a position that expands or contracts the throttling gap based on the measured system pressure.
[0022] According to an alternative embodiment variation, the actuation unit is designed as a force-regulating control unit, wherein, depending on the applied system pressure, the valve body can be moved to a position that expands or contracts the throttling gap to resist a preset force of the accumulator corresponding to the set pressure.
[0023] This variant has the advantage of self-regulation of a pressure regulating valve, where only the force exerted by the accumulator on the actuating body needs to be adjusted.
[0024] According to a preferred embodiment variation of the pressure regulating valve, the diameter of the portion of the conical receiving container and the valve body having the conical lateral outer surface is designed to increase toward the actuating unit.
[0025] According to an alternative embodiment variation, the diameter of the portion of the conical receiving container and valve body having a conical lateral outer surface is designed to decrease toward the actuation unit.
[0026] According to another advantageous embodiment of the invention, the valve seat has a plurality of pressure chamber inlet passages extending tangentially from the first pressure chamber to the second pressure chamber.
[0027] This modification avoids lateral flow forces acting on the valve body in the first pressure chamber.
[0028] According to another advantageous embodiment of the invention, a plurality of grooves are preferably formed on the conical lateral outward surface of the valve body.
[0029] These grooves are formed on the lateral outer surface of the valve body along a plane perpendicular to the direction of movement of the valve body. It is also conceivable that such grooves be formed in the conical inner surface of the valve seat.
[0030] By forming such grooves, the homogenization results can be positively influenced when the pressure regulating valve is used for homogenizing the medium.
[0031] According to a preferred embodiment variation, the valve body and valve seat are made of hardened steel, hard metal, or ceramic.
[0032] According to another alternative embodiment of the invention, a pressure regulating valve for a fluid medium under a system pressure, preferably >500 bar, has a valve housing in which at least one outlet passage for the medium is provided.
[0033] In the valve housing, a valve seat arranged along the displacement axis is provided with a receiving container that is at least partially conical. The valve body, which is fixed to the valve housing, is installed in the receiving container and has a lateral outer surface and an inlet passage that are at least partially conical.
[0034] The pressure regulating valve also has an actuation unit that is operatively connected to the valve seat.
[0035] In this variant, the flow of the medium from the inlet channel to at least one outlet channel can also be regulated by the interaction between the valve seat and the valve body.
[0036] The pressure chamber is disposed adjacent to the lateral outer surface of the valve body in the valve seat. In each case, the throttling gap extends from the pressure chamber along the lateral outer surface of the valve body in the direction of movement of the valve body, wherein the conical lateral outer surface of the valve body extends on both sides of the pressure chamber through the corresponding conical receiving container of the valve seat in the direction of movement of the valve seat.
[0037] In this variant of the embodiment, the medium under high pressure always moves along the lateral outer surface of the valve body, thereby enabling the valve seat to be adjusted with significantly less force, because due to the taper of the valve body and the valve seat, only a small fraction of the force exerted by the high-pressure medium on the valve seat acts in the axial direction or adjustment direction of the valve seat.
[0038] According to another advantageous development of this embodiment, the inlet channel extends in the direction of movement of the valve seat.
[0039] The valve body preferably has multiple pressure chamber inlet channels that extend radially from the inlet channel into the pressure chamber.
[0040] The radial width of the pressure chamber preferably corresponds to the width of the throttling gap.
[0041] In this case, the receiving container is preferably a pot-shaped design with an outlet passage in the bottom of the receiving container leading to a low-pressure chamber of the valve housing. Attached Figure Description
[0042] The preferred exemplary embodiments are explained in more detail below with reference to the accompanying drawings, in which:
[0043] Figure 1 A schematic isometric representation of an embodiment variation of the pressure regulating valve according to the invention is shown.
[0044] Figure 2 Show Figure 1 The diagram shows a schematic isometric front view of a pressure regulating valve.
[0045] Figure 3 Showing through Figure 1 The diagram shown is a cross-sectional view of the pressure regulating valve.
[0046] Figure 4 A schematic cross-sectional view of the valve body received in the valve seat at the location in the valve body used to generate a small throttling gap is shown.
[0047] Figure 5 The diagram shows the position of the valve body used to generate a large throttling gap, corresponding to... Figure 4 The expression,
[0048] Figure 6 Show Figure 1 Another front view of the pressure regulating valve is shown to illustrate the tangentially extending pressure chamber inlet passage of the valve seat.
[0049] Figure 7 The diagram shows an alternative embodiment of the pressure regulating valve according to the invention, corresponding to... Figure 2 The representation indicates that the groove is provided on the conical outer surface of the valve body.
[0050] Figure 8 A schematic isometric representation of alternative embodiments of the pressure regulating valve according to the invention is shown.
[0051] Figure 9 The location of the valve seat used to create a small throttling gap is shown according to... Figure 8 A schematic cross-sectional view of a pressure regulating valve, wherein the valve body is received in a valve seat, and
[0052] Figure 10 The diagram shows the position of the valve seat corresponding to the location used to create a large throttling gap. Figure 9 The expression . Detailed Implementation
[0053] In the following description of the accompanying drawings, terms such as top, bottom, left, right, front, rear, etc., specifically refer to exemplary representations and positions of pressure regulating valves, valve housings, valve bodies, valve seats, pressure chambers, etc., selected in the corresponding figures. These terms should not be interpreted restrictively; that is, these references may change due to different operating positions or mirror-symmetric designs, etc.
[0054] exist Figures 1 to 3 In the accompanying drawings, reference numeral 1 is used to generally indicate a variant of an embodiment of the pressure regulating valve according to the invention.
[0055] For example, in particular Figure 2 and Figure 3 As can be seen, the pressure regulating valve 1 has a valve housing 2. The valve housing 2 has an inlet passage 21 and at least one outlet passage 22, 23 communicating with the inlet passage 21, through which the fluid medium under system pressure can flow.
[0056] The valve seat 4 is arranged in the valve housing 2. The valve seat 4 has a conical receiving container 42, in which the axially movable valve body 3, having at least a partially conical lateral outer surface 33, is mounted.
[0057] In the illustrated embodiments, the valve seat 4 is mounted in the receiving container of the valve housing 2 in a manner that prevents it from moving.
[0058] However, it is also conceivable to form the valve seat 4 as a component of the valve housing 2, or to keep the valve body 130 immovable while allowing the valve seat 140 to move, as described below. Figures 8 to 10 The explanation.
[0059] In addition to the conical section 31, the valve body 3 has a head 32 that extends in the direction of movement x along the longitudinal axis L of the valve body. The head 32 is guided in a preferably cylindrical receiving container of the guide housing 6 so that it can be translated in the direction of the longitudinal axis L.
[0060] The guide housing 6 also holds the pressure piston 10, which is connected to the actuation unit 5, which is used to set a predetermined back pressure and thereby regulate the system pressure to a predetermined value.
[0061] The actuation unit 5 is operatively connected to the valve body 3 via the pressure piston 10.
[0062] The flow of pressurized fluid medium from inlet channel 21 to at least one outlet channel 22, 23 can be regulated in this case by the interaction between valve body 3 and valve seat 4.
[0063] For this purpose, the first pressure chamber 7 is disposed adjacent to the lateral outer surface 33 of the valve body 3 in the valve seat 4, and the throttling gap 8 in each case extends from the first pressure chamber along the lateral outer surface 33 of the valve body 3 in the direction of movement of the valve body 3 along the longitudinal axis L.
[0064] like Figures 2 to 5 As shown, the conical lateral outer surface 33 of the valve body 3 extends through the corresponding conical receiving container 42 of the valve seat 4 on both sides of the pressure chamber 7 in the direction of movement of the valve body 3.
[0065] Figure 4 The position of the valve body 3 in the valve seat 4 is shown, in which a very small gap 8 is left between the lateral outer surface 33 of the valve body 3 and the inner surface of the valve seat 4, corresponding to which only a small volume of pressurized medium can flow through the gap at a predetermined time.
[0066] If the system pressure rises (e.g., due to the disconnection of the high-pressure consumption device in the high-pressure system where the pressure regulating valve 1 is installed), this results in an increase in pressure in the first pressure chamber 7, thereby applying a force to the valve body 3 in the direction L of the longitudinal axis along the direction of the increased cross-section of the valve body 3, based on a proportional force vector, thereby causing the valve body 3 to move further. Figure 5 The example shows the location, which results in the widening of the throttling gap 8 and thus allows for a larger volumetric flow rate.
[0067] Because the range of high pressure applied in the pressure chamber 7 causes the fluid under high pressure to act exclusively on the lateral outer surface 33 of the valve body 3, the force acting on the valve body 3 in the direction of the longitudinal axis L is significantly reduced compared to arrangements known from the prior art in which high pressure also acts on at least one end face of such valve body 3.
[0068] In this context, the end face of the valve body should be understood as a surface aligned perpendicular to the direction of movement, on which the force of the fluid under high pressure acts. The term "end face" should not be understood to mean, for example, a groove aligned perpendicular to the direction of movement, where the fluid under high pressure acts on two opposing perpendicular surfaces of the same body, such that the forces acting on these surfaces cancel each other out.
[0069] For example, in particular Figure 3 As can be seen, in the preferred embodiment variant shown here, the second pressure chamber 24 is integrally formed radially outside the first pressure chamber 7 in the region adjacent to the valve seat 4 on the inner circumference of the valve housing 2, and the inlet passage 21 leads to the second pressure chamber.
[0070] The second pressure chamber 24 is arranged radially relative to the first pressure chamber 7 to effectively prevent deformation of the valve seat 4.
[0071] Both the first pressure chamber 7 and the second pressure chamber 24 are preferably annular in shape, such as in... Figure 2 This can be seen from the text.
[0072] In this case, the first pressure chamber 7 does not necessarily have to be formed as a material recess in the valve seat 4, such as Figure 3 As shown. It is also conceivable that the first pressure chamber 7 is designed as a connecting or continuous part of the two throttling gaps 8, that is, there is no material recess on the valve seat 4, so that the first pressure chamber 7 is defined by the inlet of the pressure chamber inlet channel 41 of the valve seat 4 into the cavity of the valve seat 4 that accommodates the valve body 3.
[0073] like Figure 2 and Figure 3 As further shown, the valve seat 4, which is designed as a separate component, is sealed radially outward toward the valve housing 2 by a static high-pressure seal 9.
[0074] The head 32 of the valve body 3 is sealed toward the inner surface of the guide housing 6 by means of a dynamic low-pressure seal 12, because in this region, the medium under high pressure applied at the inlet passage 21 has passed through the throttling gap 8, where, outside the valve seat 4, in the transition region leading to the head 32 of the valve body 3, there is a connection with the outlet passage 22 of the housing. For this purpose, a receiving groove 35 for the low-pressure seal is provided in the region of the head 32.
[0075] Alternative Figure 2 and Figure 3 The two outlet channels 22 and 23 shown can also be envisioned as leading to a single outlet channel via corresponding through holes in the housing 2.
[0076] The outer casing 2 is also sealed by a low-pressure seal 11 in conjunction with the cylindrical receiving container 62 of the guide casing 6.
[0077] Although in the illustrated embodiments, the diameter of the portion of the conical receiving container 42 and the valve body 3 having the conical lateral outer surface 33 is designed to increase toward the actuating unit 5, in alternative embodiments (not shown here), it is also contemplated that the diameter of the portion of the conical receiving container 42 and the valve body 3 having the conical lateral outer surface 33 is designed to decrease toward the actuating unit 5.
[0078] For the actuation unit in the two embodiment variants, the actuation unit 5 is required to be controllable via a control unit that measures system pressure, wherein the valve body 3 can be moved to a position that expands or contracts the throttling gap 8 based on the measured system pressure.
[0079] Such directional control can be achieved, for example, by means of an electrically actuated lifting cylinder, wherein each of the illustrated pressure pistons 10 is securely connected to the valve body 3 and thereby can apply both tension and compression forces to the valve body 3.
[0080] On the other hand, in the first mentioned embodiment variant in which the taper of the valve body 3 and the valve seat 4 are aligned, the diameter of the portion of the conical receiving container 42 and the valve body 3 having the conical lateral outer surface 33 is designed to increase toward the actuation unit 5, and the pressure piston 10 can also be installed in such a way that it can only apply pressure to the valve body 3.
[0081] In addition, in this embodiment variant, the actuation unit 5 can also be designed as a force-regulating control unit, wherein the valve body 3 can be moved to a position to expand or shrink the throttling gap 8 to resist the set force of the accumulator corresponding to the set pressure, depending on the applied system pressure.
[0082] In this case, the accumulator can be an adjustable spring or a pneumatic cylinder that can be set to a specified pressure.
[0083] If the volumetric flow rate increases via inlet channel 21, this results in an increase in pressure in the high-pressure region of pressure regulating valve 1. This causes the throttling gap 8 between valve body 3 and valve seat 4 to widen until the pressure set in the high-pressure region has dropped to the preset system pressure, and correspondingly, the hydraulic and pneumatic forces of the medium applied in the region of inlet channel 21 are balanced.
[0084] like Figure 6 As shown, the valve seat 4 has a plurality of pressure chamber inlet channels 41 extending tangentially from the first pressure chamber 7 to the second pressure chamber 24.
[0085] In contrast to the radial inlet of such a pressure chamber inlet channel 41, the advantage of such a tangential connection is that it prevents lateral flow forces in the first pressure chamber 7.
[0086] As in Figure 7 As shown in the alternative embodiment variant of the pressure regulating valve 1, here, the conical section 31 of the valve body 3 has a plurality of grooves 34 formed in the lateral outer surface 33 of the valve body 3.
[0087] In this case, the groove 34 is preferably formed in the lateral outer surface 33 of the valve body 3 along a plane perpendicular to the direction of movement of the valve body 3. By forming such a groove 34, the homogenization result is positively affected when the pressure regulating valve 1 is used for homogenizing the medium.
[0088] Hard materials such as hardened steel, hard metals, or even ceramics are preferably used as the materials for the valve body 3 and the valve seat 4.
[0089] The following text is for reference only. Figures 8 to 10 Further alternative embodiments of the pressure regulating valve 100 according to the present invention are described.
[0090] This pressure regulating valve 100, used for fluid media under system pressure, preferably for system pressure greater than 500 bar, also has a valve housing 120, in which at least one outlet passage 122, 123 is provided for the medium.
[0091] like Figure 9 and Figure 10 As further shown, the pressure regulating valve 100 includes a valve seat 140 arranged along the displacement axis L in the valve housing 120 and having a receiving container 142 that is at least partially conical. A valve body 130, which is fixed to the valve housing 120 and has a lateral outer surface 133 and an inlet passage 134 that are at least partially conical, is supported in the receiving container.
[0092] Therefore, in this embodiment variant, compared with the reference Figures 1 to 7 The described embodiment is a variant in which the valve seat 140 is a moving part, while the valve body 130 is not a moving part.
[0093] Here, the actuation unit 110 is operatively connected to the valve seat 140.
[0094] The flow of medium from inlet channel 134 to at least one outlet channel 122, 123 can also be regulated by the interaction between valve seat 140 and valve body 130.
[0095] Here, similarly, pressure chamber 170 is disposed adjacent to the lateral outer surface 133 of valve body 130 in valve seat 140, and throttling gap 180 extends from each of the pressure chambers along the lateral outer surface 133 of valve body 130 in the direction of movement of valve seat 140.
[0096] Similarly, the conical lateral outer surface 133 of the valve body 130 extends through the corresponding conical receiving container 142 of the valve seat 140 on both sides of the pressure chamber 170 in the direction of movement of the valve seat 140.
[0097] like Figures 8 to 10 As further shown, the neck 132 of the valve body 130 extends through the opening 125 of the valve housing 120 and is secured to the valve housing 120 from the outside by the fastening element 121.
[0098] The fastening element 121 is preferably formed as a nut, which is tightened onto the external thread of the neck 132 of the valve body 130.
[0099] In the low-pressure chamber 124 of the valve housing 120, the neck 132 extends to the extent that it abuts against the inner wall of the low-pressure chamber 124 having mating steps 136 and is thus secured to the valve housing 120 by means of a fastening element 121 formed as a nut.
[0100] However, other possible ways of securing the valve body 130 to the valve housing 120 are also conceivable.
[0101] A static low-pressure seal 111 is inserted in the area of opening 125 for fluid sealing.
[0102] Then, the conical section 132 of the valve body 130 is adjacent to the portion of the neck 132 of the valve body 130 that has been widened by the step 136, and its lateral outer surface 133 together with the lateral inner surface of the receiving container 142 of the valve seat 140 forms a throttling gap 180.
[0103] An inlet passage 134 extends centrally from a connector outside the valve housing 120 through the neck 132 of the valve body 130 to the region of the conical section 131. From there, a plurality of pressure chamber inlet passages 135 preferably extend to the lateral outer surface 133 of the valve body 130 to form a pressure chamber 170 in that region.
[0104] like Figure 9 and Figure 10 As shown, the radial width of the pressure chamber 170 preferably corresponds to the width of the throttling gap 180.
[0105] This can also be envisioned as... Figure 3 The illustrated embodiment is a variant similar to the one shown, wherein a material recess is provided in the region of the orifice of the pressure chamber inlet channel 135 on the lateral outer surface 133 of the valve body 3.
[0106] Preferably, the pressure chamber inlet passage 135 extends perpendicularly to the lateral outer surface 133 of the valve body 130 in this case.
[0107] When pressure is applied, in the direction of increasing the cross-section of valve seat 4, the force acts on valve seat 140 as a force vector proportional to the longitudinal axis L of valve seat 140.
[0108] Valve seat 4 in this case from Figure 9 The indicated position moves to Figure 10 The position shown results in a widening of the throttling gap 180, thereby allowing for a larger volumetric flow rate.
[0109] like Figure 9 and Figure 10 As further shown, the receiving container 142 of the valve seat 140 is pot-shaped and has an outlet passage 143 in the bottom of the receiving container 142 leading to the low-pressure chamber 124 of the valve housing 120. Figure 9 and Figure 10 After the throttling gap 180 on the left side, a portion of the fluid medium can flow out through the low-pressure chamber via the outlet passage 143 of the valve seat 140 and the outlet 122 of the valve body 120.
[0110] In passing Figure 9 and Figure 10 After the throttling gap 180 on the right side, another portion of the fluid medium can flow out through the low-pressure chamber 124 and outlet 123 in the valve housing 120.
[0111] With the help of Figure 9 and Figure 10 The example shown, the actuation unit 110, preferably corresponds to this case. Figure 2 and Figure 3 The illustrated embodiment variant takes the form of a pressure piston, which is held on the guide housing 160 and can be set by an actuating element to a predetermined back pressure and thus used to regulate the system pressure to a predetermined value.
[0112] The guide housing 160 is also preferably connected to the valve housing 120 by means of a fixing screw 162.
[0113] The valve seat receiving container 163 is centrally arranged in the guide housing 160, and the head 144 of the valve seat 140 is housed in the receiving container so that it can be displaced in the L direction.
[0114] A groove is provided at the head 144 of the valve seat 140 to fluidly seal the valve seat 140 to the guide housing 160, in which a dynamic low-pressure seal 112 is received.
[0115] List of reference numerals
[0116] 1. Pressure regulating valve
[0117] 2 Valve housing
[0118] 21 Entrance Channel
[0119] 22 Exit Channel
[0120] 23 Exit Channel
[0121] 24-ring channel
[0122] 3 valve body
[0123] 31 Conical Section
[0124] 32 heads
[0125] 33 Lateral Outer Surface
[0126] 34 grooves
[0127] 35 receiving groove
[0128] 4 valve seats
[0129] 41 Pressure Chamber Entrance Passage
[0130] 42 receiving containers
[0131] 5 Actuation Units
[0132] 6-guide housing
[0133] 61 main body
[0134] 62 fixing screws
[0135] 63 Containers
[0136] 7 pressure chambers
[0137] 8 throttling gap
[0138] 9 Static high-pressure seals
[0139] 10-pump piston
[0140] 11 Low-pressure seals
[0141] 12 Dynamic Low-Pressure Seals
[0142] 100 pressure regulating valve
[0143] 110 Actuation Unit
[0144] 111 Low-pressure seal
[0145] 112 Dynamic Low-Pressure Seal
[0146] 120 Valve Housing
[0147] 121 Fastening Components
[0148] 122 Exit Channel
[0149] Exit Channel 123
[0150] 124 Low-pressure chamber
[0151] 125 opening
[0152] 130 valve body
[0153] 131 Conical Section
[0154] 132 neck
[0155] 133 Lateral Outer Surface
[0156] Entrance Channel 134
[0157] 135 Pressure Chamber Entrance Channel
[0158] 136 paired steps
[0159] 140 valve seat
[0160] 141 Conical Section
[0161] 142 receiving containers
[0162] 143 Exit Channel
[0163] 144 heads
[0164] 160 Guide Housing
[0165] 161 main body
[0166] 162 fixing screw
[0167] 163 Valve Seat Receiving Container
[0168] 170 pressure chambers
[0169] 180 throttling gap
[0170] x and y directions
[0171] L is the longitudinal axis.
Claims
1. A pressure regulating valve (1) for fluid media under system pressures >500 bar, comprising: - A valve housing (2) is provided in which an inlet passage (21) for the medium and at least one outlet passage (22, 23) communicating therewith are disposed. - Valve seat (4), the valve seat is arranged in the valve housing (2) and has a conical receiving container (42), and an axially movable valve body (3) having at least a partially conical lateral outer surface (33) is mounted in the conical receiving container. -Actuation unit (5), which is operatively connected to the valve body (3). -The flow of the medium from the inlet channel (21) to the at least one outlet channel (22, 23) can be regulated by the interaction between the valve body (3) and the valve seat (4). Its features - A first pressure chamber (7) is disposed adjacent to the lateral outer surface (33) of the valve body (3) in the valve seat (4), and a throttling gap (8) in each case extends from the first pressure chamber along the lateral outer surface (33) of the valve body (3) in the direction of movement of the valve body (3). - wherein the conical lateral outer surface (33) of the valve body (3) extends on both sides of the pressure chamber (7) through the corresponding conical receiving container (42) of the valve seat (4) in the direction of movement of the valve body (3).
2. The pressure regulating valve (1) according to claim 1, characterized in that, In the region of the inner circumference of the valve housing (2) adjacent to the valve seat (4), the second pressure chamber (24) is integrally formed radially outside the first pressure chamber (7), and the inlet passage (21) leads to the second pressure chamber.
3. The pressure regulating valve (1) according to claim 2, characterized in that, The first pressure chamber (7) and the second pressure chamber (24) are annular in design.
4. The pressure regulating valve (1) according to claim 1, characterized in that, The valve seat (4) is installed in the receiving container of the valve housing (2) in a way that prevents movement, or is designed as a component of the valve housing (2).
5. The pressure regulating valve (1) according to claim 1, characterized in that, The actuation unit (5) can be controlled via a control unit that measures system pressure, wherein the valve body (3) can be moved to a position that expands or contracts the throttling gap (8) based on the measured system pressure.
6. The pressure regulating valve (1) according to claim 1, characterized in that, The actuation unit (5) is designed as a force-regulating control unit, wherein the valve body (3) is capable of moving to a position that expands or contracts the throttling gap (8) to resist a preset force of the accumulator corresponding to the set pressure, depending on the applied system pressure.
7. The pressure regulating valve (1) according to claim 1, characterized in that, The diameter of the portion of the conical receiving container (42) and the valve body (3) having the conical lateral outer surface (33) is designed to increase toward the actuation unit (5).
8. The pressure regulating valve (1) according to claim 1, characterized in that, The diameter of the portion of the conical receiving container (42) and the valve body (3) having the conical lateral outer surface (33) is designed to decrease toward the actuation unit (5).
9. The pressure regulating valve (1) according to claim 2, characterized in that, The valve seat (4) has a plurality of pressure chamber inlet channels (41) extending tangentially from the first pressure chamber (7) toward the second pressure chamber (24) relative to the lateral outer surface (33) of the valve body (3).
10. The pressure regulating valve (1) according to claim 1, characterized in that, Multiple grooves (34) are formed in the conical lateral outer surface (33) of the valve body (3).
11. The pressure regulating valve (1) according to claim 10, characterized in that, The groove (34) is formed in the lateral outer surface (33) of the valve body (3) along a plane perpendicular to the moving direction of the valve body (3).
12. The pressure regulating valve (1) according to claim 1, characterized in that, The valve body (3) and the valve seat (4) are made of hardened steel, hard metal or ceramic.
13. A pressure regulating valve (100) for a fluid medium at a system pressure >500 bar, comprising: - A valve housing (120) is provided in which at least one outlet passage (122, 123) for the medium is disposed. - Valve seat (140), which is arranged in the valve housing (120) along the displacement axis (L) and has a receiving container (142) that is at least partially conical, and valve body (130) fixed to the valve housing (120) is mounted in the receiving container and has a lateral outer surface (133) and an inlet passage (134) that are at least partially conical. -Actuation unit (110), which is operatively connected to the valve seat (140). -The flow of the medium from the inlet channel (134) to the at least one outlet channel (122, 123) can be regulated by the interaction between the valve body (130) and the valve seat (140). Its features - A pressure chamber (170) is disposed adjacent to the lateral outer surface (133) of the valve body (130) in the valve seat (140), and a throttling gap (180) in each case extends from the pressure chamber (170) along the lateral outer surface (133) of the valve body (130) in the direction of movement of the valve seat (140). - wherein the conical lateral outer surface (133) of the valve body (130) extends on both sides of the pressure chamber (170) through the corresponding conical receiving container (142) of the valve seat (140) in the direction of movement of the valve seat (140).
14. The pressure regulating valve (1) according to claim 13, characterized in that, The inlet channel (134) extends in the direction of movement of the valve seat (140).
15. The pressure regulating valve (1) according to claim 13 or 14, characterized in that, The valve body (130) includes a plurality of pressure chamber inlet channels (135) extending radially from the inlet channel (134) into the pressure chamber (170).
16. The pressure regulating valve (1) according to claim 13, characterized in that, The radial width of the pressure chamber (170) corresponds to the width of the throttling gap (180).
17. The pressure regulating valve (100) according to claim 13, characterized in that, The receiving container (142) is pot-shaped and has an outlet passage (143) in the bottom of the receiving container (142) leading to a low-pressure chamber (124) of the valve housing (120).