A valve positioner and valve connection assembly

Abstract

The utility model relates to valve positioner technical field, concretely relates to a valve positioner and valve's connecting assembly. The utility model provides a valve positioner and valve's connecting assembly, including first connecting piece, the first connecting piece is used for the connection between the drive rod of valve positioner and the valve rod of valve, the first connecting piece includes the integrated card block spare and cylinder, the first end between cylinder and valve rod is connected through the card block spare, the second end of cylinder is equipped with the slot for the drive rod insertion, the depth direction of slot is same with the axial direction of cylinder, and at least one bolt hole is equipped on the circumference of cylinder. The drive rod of the cylinder of first connecting piece and valve positioner is fixed through multiple bolts, and the connection stability of both is strong, and under the action of second connecting piece, can make the card block spare of first connecting piece tightly insert into the valve rod.

Description

Technical Field

[0001] This utility model relates to the field of valve positioner technology, specifically to a valve positioner and valve connection component. Background Technology

[0002] Siemens intelligent valve positioners are widely used in both rotary and linear pneumatic control valves. The core function of a valve positioner is to accurately and quickly position the valve core (stem), ensuring it strictly follows the output command signals from the controller (such as DCS or PLC). Through closed-loop feedback control, it accurately, quickly, and powerfully converts the command signals from the control system into the actual position of the valve stem, overcoming the shortcomings of the actuator itself and significantly improving the static accuracy, dynamic response speed, anti-interference capability, and overall control performance of the control valve.

[0003] Currently, the drive rod of a valve positioner and the valve stem are connected by a connecting component, such as the valve positioner-valve body transfer connection structure with authorization announcement number CN 209196251 U. During use, the two ends of the connecting component are respectively engaged with the drive rod and the valve stem. However, the connection stability of such commonly used snap-fit ​​or locking connectors is relatively poor. Utility Model Content

[0004] (a) The problem to be solved by this utility model is that when such commonly used snap-fit ​​or snap-fit ​​connection components are used, the connection stability between the drive rod, the connection component and the valve stem is poor.

[0005] (II) Technical Solution

[0006] A valve positioner and valve connection assembly includes a first connector and a second connector, wherein the first connector is used for connecting the drive rod of the valve positioner and the valve stem of the valve;

[0007] The first connector includes an integrally formed locking block and a column, and the first end of the column is engaged with the valve stem by the locking block;

[0008] The second end of the column is provided with a slot for inserting the drive rod. The depth direction of the slot is the same as the axial direction of the column. At least one bolt hole is provided on the circumferential surface of the column. The axis of the bolt hole is perpendicular to the axis of the column. A bolt is threaded into each bolt hole.

[0009] The second connector is connected to both the valve positioner housing and the valve housing, and the distance between the valve positioner and the valve can be adjusted via the second connector.

[0010] According to one embodiment of the present invention, the first connecting member is a metal part.

[0011] According to one embodiment of the present invention, the locking block includes a disc, a connecting block and a locking block connected in sequence. The disc is connected to the end face of the first end of the column, and the end of the valve stem is provided with a locking groove adapted to the locking block.

[0012] According to one embodiment of the present invention, the cross-section of the card block is any one of a chamfered circle, a triangle, or a square.

[0013] According to one embodiment of the present invention, the cross-section of the card block is a regular polygon.

[0014] According to one embodiment of the present invention, the bolt is an internal hex bolt.

[0015] According to one embodiment of the present invention, a plurality of bolt holes are provided, and the plurality of bolt holes are evenly arranged around the axis of the column.

[0016] According to one embodiment of the present invention, the end of the internal hexagonal bolt is conical or frustum-shaped.

[0017] According to one embodiment of the present invention, the second connector includes a connecting corner piece and two L-shaped corner pieces. The connecting corner piece has a plate body one, a plate body two, and a plate body three connected in sequence. The plate body one and the plate body two are perpendicular to each other, and the plate body one and the plate body three are parallel to each other.

[0018] The second plate of the connecting angle piece is connected to the outer shell of the valve positioner. The first ends of the two L-shaped angle pieces are respectively connected to the outer shell of the valve, and the second ends of the two L-shaped angle pieces are respectively connected to the first and third plates of the connecting angle piece by bolts.

[0019] According to one embodiment of the present invention, at least one first strip hole is provided on the first plate and the second plate of the connecting corner piece, and at least one second strip hole is provided on the second end of the L-shaped corner piece. The length directions of the first strip hole and the second strip hole are the same, and the length direction of the first strip hole is the same as the axial direction of the column.

[0020] According to one embodiment of the present invention, the second plate of the connecting corner piece is provided with a first round hole for installing bolts, and the first end of the L-shaped corner piece is provided with a second round hole for installing bolts.

[0021] The beneficial effects of this utility model are:

[0022] The first connecting member's column and the valve positioner's drive rod are fixed together by multiple bolts, resulting in a strong connection stability. Furthermore, under the action of the second connecting member, the locking block of the first connecting member can be tightly inserted into the valve stem, thus further enhancing the connection strength between the first connecting member and the valve stem. This ensures that the connecting assembly stably connects the valve stem and the valve positioner's drive rod. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the connection status of the valve, connecting assembly, and valve positioner is provided for embodiments of this utility model;

[0025] Figure 2 A perspective view of the first connector provided in an embodiment of this utility model;

[0026] Figure 3 A front view of the first connector provided in an embodiment of this utility model;

[0027] Figure 4 A front view of an internal hex bolt provided for an embodiment of this utility model.

[0028] Icons: 1. Valve; 101. Cylinder; 2. Valve positioner; 3. First connecting piece; 301. Column; 302. Disc; 303. Connecting block; 304. Locking block; 4. Connecting angle piece; 5. First L-shaped angle piece; 6. Second L-shaped angle piece; 7. Socket head cap screw; 701. Frustum; 8. Locking bolt. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] like Figures 1-4 As shown, one embodiment of the present invention provides a connection assembly between a valve positioner and a valve, including a first connector 3 and a second connector. The first connector 3 is used for the connection between the drive rod of the valve positioner 2 and the valve stem of the valve 1.

[0031] The first connecting member 3 includes an integrally formed locking block and a column 301, and the first end of the column 301 is engaged with the valve stem by the locking block.

[0032] The second end of the column 301 is provided with a slot for inserting a drive rod. The depth direction of the slot is the same as the axial direction of the column 301. At least one bolt hole is provided on the circumferential surface of the column 301. The axis of the bolt hole is perpendicular to the axis of the column 301. A bolt is threaded into each bolt hole.

[0033] The second connector is connected to the housing of valve positioner 2 and the housing of valve 1 respectively, and the distance between valve positioner 2 and valve 1 can be adjusted through the second connector.

[0034] In this embodiment, when connecting the valve positioner 2 and the valve 1, firstly, the second connecting piece is installed between the housing of the valve positioner 2 and the housing of the valve 1. Then, the locking piece of the first connecting piece 3 is engaged with the valve stem of the valve 1. Next, the drive rod 201 of the valve positioner 2 is inserted into the slot of the column 301. Finally, bolts are screwed into the bolt holes on the circumference of the column 301 and tightened, fixing the drive rod 201 of the valve positioner 2 in the slot of the column 301. Finally, the distance between the valve positioner 2 and the valve 1 is reduced so that the locking piece of the first connecting piece 3 is tightly inserted into the valve stem. In this way, firstly, the column 301 of the first connecting piece 3 and the drive rod of the valve positioner 2 are fixed by multiple bolts, resulting in strong connection stability. Secondly, although the locking block of the first connector 3 and the valve stem of the valve 1 are locked together, the locking block of the first connector 3 can be tightly inserted into the valve stem under the action of the second connector, which can further enhance the connection strength between the first connector 3 and the valve stem.

[0035] In this embodiment, as Figure 1 As shown, valve 1 has a cylinder 101 on its outer shell, and the end of valve stem of valve 1 is located inside the cylinder 101.

[0036] In some embodiments, the prism 301 is a cylinder or a polygonal prism, such as a pentagonal prism. Preferably, as Figure 2 As shown, cylinder 301 is a cylinder.

[0037] In some embodiments, such as Figure 2 and Figure 3 As shown, the locking block includes a disc 302, a connecting block 303, and a locking block 304 connected in sequence. The disc 302 is connected to the end face of the first end of the column 301. The connecting block 303 is rectangular in shape, and its left and right sides are curved. The end of the valve stem is provided with a locking groove that matches the locking block 304. It should be noted that the end of the valve stem of valve 1 is provided with a locking groove that matches the locking block 304.

[0038] In some embodiments, the cross-section of the card block 304 is any one of a chamfered circle, a triangle, or a square. In some embodiments, the cross-section of the card block 304 is a regular polygon. Preferably, as shown below... Figure 2 As shown, the cross-section of the card block 304 is a chamfered circle.

[0039] It should be noted that the connector between the valve positioner 2 and the valve 1 was previously made of plastic. Although the cost was low, it was prone to aging and embrittlement, especially in high temperature, high pressure or corrosive environments, resulting in a short service life. In addition, it had poor strength and wear resistance and was easily damaged by external forces.

[0040] In this embodiment, the column 301, disc 302, connecting block 303, and locking block 304 are integrally cast or machined from metal. Preferably, the first connecting member 3 is made of stainless steel, which has good strength and wear resistance, is not easily damaged by external forces, has a long service life, does not age, is corrosion resistant, and is suitable for use in high temperature, high pressure, or corrosive environments.

[0041] In some embodiments, such as Figure 2 As shown, the bolt is a hex socket head cap screw 7, and correspondingly, the bolt hole on the circumferential surface of the cylinder 301 is compatible with the hex socket head cap screw 7. Using the hex socket head cap screw 7 ensures that the hex head of the hex socket head cap screw 7 is fully inserted into the bolt hole on the circumferential surface of the cylinder 301, and will not protrude from the circumferential surface of the cylinder 301.

[0042] In some embodiments, a plurality of bolt holes are provided on the circumferential surface of the column 301, and the plurality of bolt holes are evenly arranged around the axis of the column 301.

[0043] In some embodiments, such as Figure 4 As shown, unlike traditional hexagon socket head cap screws, the hexagon socket head cap screw 7 in this embodiment has a frustum 701 at its end. Thus, after tightening the hexagon socket head cap screw 7 on the circumferential surface of the cylinder 301, the end of the hexagon socket head cap screw 7 gradually approaches the circumferential surface of the drive rod 201 until the frustum 701 of the hexagon socket head cap screw 7 tightly abuts against the circumferential surface of the drive rod 201, and the multiple hexagon socket head cap screws 7 on the circumferential surface of the cylinder 301 cooperate to fix the drive rod 201.

[0044] Optionally, the end of the internal hex bolt 7 in this embodiment is conical.

[0045] In this embodiment, as Figure 1As shown, the connecting assembly includes a second connector, which includes a connecting corner piece 4 and two L-shaped corner pieces. For ease of description, the two L-shaped corner pieces are named the first L-shaped corner piece 5 and the second L-shaped corner piece 6, respectively. The connecting corner piece 4 has a plate body one, a plate body two, and a plate body three connected in sequence, wherein plate body one and plate body two are perpendicular, and plate body one and plate body three are parallel. The first L-shaped corner piece 5 and the second L-shaped corner piece 6 each have a horizontal plate and a vertical plate connected to each other.

[0046] Furthermore, the plate body 2 of the connecting corner piece 4 is provided with multiple first round holes, and multiple second round holes are provided on the horizontal plates of the first L-shaped corner piece 5 and the second L-shaped corner piece 6.

[0047] In addition, at least one first strip hole is provided on the first plate and the second plate of the connecting corner piece 4, and at least one second strip hole is provided on the vertical plate of the first L-shaped corner piece 5 and the second L-shaped corner piece 6. The length directions of the first strip hole and the second strip hole are the same, and the length direction of the first strip hole is the same as the axial direction of the column 301.

[0048] When connecting and fixing valve 1 and valve positioner 2, first use bolts to fix the plate of connecting angle piece 4 to the outer shell of valve positioner 2. Then, use bolts to fix the horizontal plates of the first L-shaped angle piece 5 and the second L-shaped angle piece 6 to the outer shell of valve 1. Then adjust the distance between valve 1 and valve positioner 2. Next, use locking bolts 8 to pass through the first strip hole on connecting angle piece 4 and the second strip hole on the vertical plate of L-shaped angle piece in sequence. Finally, tighten the nuts and lock them.

[0049] As can be seen, by connecting the first strip hole on the corner piece 4 and the second strip hole on the L-shaped corner piece, the relative distance between the valve 1 and the valve positioner 2 can be flexibly adjusted.

[0050] When installing valve 1 and valve positioner 2, firstly, use bolts to fix the plate of connecting angle piece 4 to the outer shell of valve positioner 2. Then, use bolts to fix the horizontal plates of the first L-shaped angle piece 5 and the second L-shaped angle piece 6 to the outer shell of valve 1. Next, insert the locking block 304 of the first connecting piece 3 into the slot at the end of valve stem of valve 1. Then, insert the drive rod 201 of valve positioner 2 into the slot of column 301 and screw the hex bolts 7 into the bolt holes on the circumference of column 301 and tighten them. Finally, reduce the distance between valve 1 and valve positioner 2 so that the locking block 304 of the first connecting piece 3 is tightly locked into the slot at the end of valve stem. Finally, use locking bolts 8 and nuts to fix the first L-shaped angle piece 5 to the plate of connecting angle piece 4. Use locking bolts 8 and nuts to fix the second L-shaped angle piece 6 to the plate of connecting angle piece 4.

[0051] It should be noted that since the installation position between the connecting corner piece 4 and the L-shaped corner piece is adjustable, the distance between the valve 1 and the valve positioner 2 is also adjustable. Therefore, when installing the first connecting piece 3, by bringing the distance between the valve 1 and the valve positioner 2 closer, the locking block 304 of the first connecting piece 3 can be tightly locked into the locking groove at the end of the valve stem, thus preventing the first connecting piece 3 from separating from the valve stem of the valve 1.

[0052] In summary, this connection component has the following advantages:

[0053] First, the first connector 3 is made of stainless steel, which has good strength and wear resistance, is not easily damaged by external forces, has a long service life, does not age, is corrosion resistant, and is suitable for use in high temperature, high pressure or corrosive environments.

[0054] Second, the drive rod 201 of the valve positioner 2 is fixed in the slot of the column 301 by multiple hexagonal bolts 7, which can better connect the drive rod 201 and prevent the drive rod 201 from easily separating from the first connecting piece 3.

[0055] Third, the installation position between the connecting corner piece 4 and the L-shaped corner piece of the second connector is adjustable, so that the distance between the valve 1 and the valve positioner 2 is adjustable. Therefore, by bringing the distance between the valve 1 and the valve positioner 2 closer, the locking block 304 of the first connector 3 can be tightly locked into the locking groove at the end of the valve stem, which improves the connection stability between the first connector 3 and the valve 1.

[0056] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve positioner-to-valve connection assembly, comprising: It includes a first connector (3) and a second connector, wherein the first connector (3) is used for the connection between the drive rod of the valve positioner (2) and the valve stem of the valve (1); The first connector (3) includes an integrally formed locking block and a column (301), and the first end of the column (301) is engaged with the valve stem through the locking block; The second end of the column (301) is provided with a slot for inserting the drive rod. The depth direction of the slot is the same as the axial direction of the column (301). At least one bolt hole is provided on the circumferential surface of the column (301). The axis of the bolt hole is perpendicular to the axis of the column (301). A bolt is threaded into each bolt hole. The second connector is connected to the housing of the valve positioner (2) and the housing of the valve (1) respectively, and the distance between the valve positioner (2) and the valve (1) can be adjusted through the second connector.

2. The valve positioner and valve connection assembly of claim 1, wherein, The first connector (3) is a metal part.

3. The valve positioner and valve connection assembly of claim 1, wherein, The locking component includes a disc (302), a connecting block (303), and a locking block (304) connected in sequence. The disc (302) is connected to the end face of the first end of the column (301), and the end of the valve stem is provided with a locking groove that is adapted to the locking block (304).

4. The valve positioner and valve connection assembly of claim 3, wherein, The cross-section of the card block (304) is any one of chamfered circle, triangle, or square.

5. The valve positioner and valve connection assembly of claim 1, wherein, The bolt is an internal hex bolt (7).

6. The valve positioner and valve connection assembly of claim 1, wherein, The bolt holes are provided in a plurality of manner, and the plurality of bolt holes are evenly arranged around the axis of the column (301).

7. The valve positioner and valve connection assembly of claim 5, wherein, The end of the internal hex bolt (7) is conical or frustum-shaped.

8. The valve positioner and valve connection assembly of claim 1, wherein, The second connector includes a connecting corner piece (4) and two L-shaped corner pieces. The connecting corner piece (4) has a plate body one, a plate body two and a plate body three connected in sequence. The plate body one and the plate body two are perpendicular to each other, and the plate body one and the plate body three are parallel to each other. The second plate of the connecting corner piece (4) is connected to the outer shell of the valve positioner (2), the first ends of the two L-shaped corner pieces are respectively connected to the outer shell of the valve (1), and the second ends of the two L-shaped corner pieces are respectively connected to the first and third plates of the connecting corner piece (4) by bolts.

9. The valve positioner and valve connection assembly of claim 8, wherein, The connecting corner piece (4) has at least one first strip hole on its plate one and plate two respectively, and at least one second strip hole on the second end of the L-shaped corner piece. The length directions of the first strip hole and the second strip hole are the same, and the length direction of the first strip hole is the same as the axial direction of the column (301).

10. The valve positioner and valve connection assembly of claim 9, wherein, The connecting corner piece (4) has a first round hole for installing bolts on its plate body two, and the L-shaped corner piece has a second round hole for installing bolts on its first end.

11. The valve positioner and valve connection assembly of claim 3, wherein, The cross-section of the card block (304) is a regular polygon.

Images