Soft magnetic counterweight type nozzle baffle electrical conversion module

Abstract

The invention discloses a soft magnetic counterweight type nozzle baffle electrical conversion module, which comprises a mounting bracket, an electromagnetic coil, a connecting rod, a baffle, a counterweight sheet and a spring, the electromagnetic coil is fixed on the mounting bracket; the connecting rod is of a hollow cylinder structure and located in the center of the electromagnetic coil, and gas can flow in from the bottom of the connecting rod and flow out from the top. The baffle plate is compressed on the mounting bracket by the spring and can rotate around a contact line of the baffle plate and the mounting bracket; with the contact line as a boundary, one part of the baffle is located over the connecting rod, and the other part of the baffle is provided with a weight stack. The baffle can rotate like a seesaw by adjusting the current of the electromagnetic coil, so that the distance between the baffle and the connecting rod is changed, and the gas pressure and flow at the outlet of the connecting rod are adjusted. Through the ingenious structural design, the acting force required for changing the position of the baffle is reduced, and the technical effects of lower power consumption and higher sensitivity are achieved.

Description

Technical Field

[0001] The invention relates to the field of industrial flow control, and in particular to a soft magnetic counterweight nozzle baffle electrical conversion module. Background Art

[0002] Valve positioners are divided into pneumatic valve positioners, electro-pneumatic valve positioners and intelligent valve positioners according to their structure. They are the main accessories of control valves and are usually used in conjunction with pneumatic control valves. They receive the output signal of the regulator and then use its output signal to control the pneumatic control valve. When the control valve is actuated, the displacement of the valve stem is fed back to the valve positioner through a mechanical device, and the valve position status is transmitted to the upper system through an electrical signal.

[0003] The key component of a valve positioner is the electrical conversion module, which converts electrical signals into pneumatic signals. This amplifies the nozzle's back pressure and flow control, ensuring sufficient power to operate the pneumatic control valve. The module's accuracy, real-time performance, reliability, vibration resistance, and low power consumption directly impact the overall performance of the valve positioner. Designing a superior electrical conversion module is key to achieving intelligent valve positioners.

[0004] For applications in flammable and explosive scenarios such as oil and gas transportation, the energy consumption index of the electrical conversion module is crucial. The lower the energy consumption and the smaller the operating current, the higher the safety factor. The development of electrical conversion modules with lower energy consumption and higher safety factors has always been a rigid demand in the field of industrial flow control. At the same time, sensitivity and pressure range are also very important performance indicators, the higher the better. "A Reed-type Nozzle Baffle Permanent Magnet Electrical Conversion Module" effectively reduces the current of the electromagnetic coil by designing the outer shell into a magnetic conductive structure and adding permanent magnets, thereby achieving the purpose of reducing power consumption and improving sensitivity. However, if the baffle that blocks the gas can be designed into a seesaw structure and the lever principle is used to reduce the demand for the electromagnetic coil force, it is very likely that power consumption can be further reduced and sensitivity can be improved. Summary of the Invention

[0005] In response to the above-mentioned problems existing in the prior art, the present invention provides a soft magnetic counterweight nozzle baffle electrical conversion module, which designs the baffle into a seesaw structure and uses a counterweight plate to balance the force on the baffle, thereby effectively reducing the demand for the force of the electromagnetic coil and achieving the technical effect of reducing power consumption and improving sensitivity.

[0006] The technical solutions of the present invention are as follows:

[0007] A soft magnetic counterweight nozzle baffle electrical conversion module, comprising a mounting bracket 1, an electromagnetic coil 2, a coil top plate 3, a connecting rod 4, a baffle 5, a counterweight plate 6, and a spring 7;

[0008] The mounting bracket 1 is composed of a bottom plate 101 and a back plate 102, and the cross-section of the two is " " shape, wherein the bottom plate 101 is parallel to the horizontal plane, and the back plate 102 is perpendicular to the bottom plate 101; a connecting rod mounting hole 103 is provided on the bottom plate 101 for connecting and fixing the connecting rod 4;

[0009] The electromagnetic coil 2 is placed flat on the bottom plate 101, and the central axis of the electromagnetic coil 2 coincides with the central axis of the connecting rod mounting hole 103;

[0010] The coil top plate 3 is a thin plate structure, and is provided with a second connecting rod mounting hole 301 for allowing the connecting rod 4 to pass through;

[0011] The connecting rod 4 is a hollow cylindrical structure, and one of its end faces has a nut 401. A cross-sectional view through the central axis of the connecting rod 4 shows a "T" shape. Gas can flow through the interior of the connecting rod 4. The connecting rod 4 is sequentially passed through the connecting rod mounting hole 2 301 of the coil top plate 3, the center of the electromagnetic coil 2, and the connecting rod mounting hole 103 of the bottom plate 101. The nut 401 of the connecting rod 4 will be stuck in the connecting rod mounting hole 2 301. The connecting rod 4 is connected to the connecting rod mounting hole 103 with a nut and tightened. The connecting rod 4, the coil top plate 3, the electromagnetic coil 2, and the mounting bracket 1 are fixed into a whole.

[0012] The baffle 5 is a thin plate structure, placed flat on the upper end surface of the back plate 102, and is pressed downward by a spring 7, so that the baffle 5 cannot move up and down, and can only rotate with the contact line between the baffle 5 and the back plate 102 as the rotation axis. When viewed from directly above the coil top plate 3, the baffle 5 is divided into two parts with the upper end surface of the back plate 102 as the dividing line: a long end 501 and a short end 502. The long end 501 blocks the connecting rod 4, while the short end 502 does not block the bottom plate 101.

[0013] The weight plate 6 is fixed to the short end 502 of the baffle 5;

[0014] When the electromagnetic coil 2 is energized, the mounting bracket 1 , the connecting rod 4 and the baffle 5 are magnetized, the long end 501 of the baffle 5 moves downward and approaches the connecting rod 4 , and the short end 502 of the baffle 5 moves upward together with the counterweight 6 .

[0015] Furthermore, the materials of the mounting bracket 1 , the connecting rod 4 and the baffle 5 are soft magnetic materials.

[0016] Furthermore, it includes a connecting piece 8; the connecting piece 8 is fixed above the short end 502 of the baffle 5, and the counterweight plate 6 is fixed below the short end 502 of the baffle 5; a circular ring-shaped spring limiter 801 is provided on the connecting piece 8, which is used to limit the movement of the spring 7 in the horizontal direction; after the spring 7 is embedded in the spring limiter 801, it can only expand and contract in the vertical direction and cannot move in the horizontal direction.

[0017] Further, it includes a limiting piece 9; the limiting piece 9 is cut from a thin plate and is in the shape of a "U", and is fixed on the back plate 102; the two protruding parts of the limiting piece 9 are defined as clamping parts 901;

[0018] When the baffle 5 moves away from the electromagnetic coil 2 in the horizontal plane and perpendicular to the back plate 102, it will touch the clamping part 901; when the baffle 5 moves away from the electromagnetic coil 2 in the horizontal plane and parallel to the back plate 102, it will also touch the clamping part 901; when the baffle 5 moves towards the electromagnetic coil 2 in the horizontal plane and perpendicular to the back plate 102, the counterweight piece 6 will touch the limiting piece 9.

[0019] Further, it includes an upper cover 10, a spring seat 11, a limit screw 12 and a set screw 13;

[0020] The upper cover 10 is fixed to the coil top plate 3 by screws to form a closed space, and the baffle 5, the counterweight 6, the connecting piece 8 and the spring 7 are enclosed inside this space;

[0021] The upper cover 10 is provided with a through hole with a central axis perpendicular to the bottom plate 101, defined as a spring seat mounting hole 1001, for installing the spring seat 11; the spring seat 11 passes through the spring seat mounting hole 1001 and is embedded in the center of the spring 7; the spring seat 11 is fixed by the set screw 13 on the side of the upper cover 10; under the action of the spring seat 11 and the spring limiting part 801 of the connecting piece 8, the spring 7 can only expand and contract in the vertical direction and cannot move in the horizontal direction; by adjusting the installation height of the set screw 13 and the spring seat 11, the elastic force of the spring 7 on the baffle 8 can be adjusted;

[0022] The upper cover 10 is further provided with another through hole with a central axis perpendicular to the bottom plate 101, defined as a limit screw mounting hole 1002, for installing the limit screw 12; the limit screw 12 is fixed by the set screw 13 on the side of the upper cover 10; the lower end surface of the limit screw 11 passes through the limit screw mounting hole 1002 and is located above the long end 501 of the baffle 5, restricting the up and down movement range of the long end 501 of the baffle 5; by adjusting the installation height of the set screw 13 and the limit screw 12, the up and down movement range of the long end 501 of the baffle 5 can be adjusted. The beneficial technical effects of the present invention are as follows:

[0023] (1) The working current of the electromagnetic coil is 0 - 1.0 mA, with lower power consumption;

[0024] (2) When the increment of the electromagnetic coil current reaches 0.003 mA, the flow rate and pressure of the gas will change, improving the sensitivity. Description of the Drawings

[0025] Figure 1It is an exploded view;

[0026] Figure 2 This is an appearance picture.

[0027] In the figure, the correspondence between the component names and the drawing numbers is: 1. Mounting bracket; 2. Electromagnetic coil; 3. Coil top plate; 4. Connecting rod; 5. Baffle; 6. Counterweight plate; 7. Spring; 8. Connecting plate; 9. Limiting plate; 10. Upper cover; 11. Spring seat; 12. Limiting screw; 13. Set screw; 14. Circuit board; 101. Bottom plate; 102. Back plate; 103. Connecting rod mounting hole; 301. Connecting rod mounting hole 2; 401. Nut; 501. Long end; 502. Short end; 801. Spring limiting piece; 901. Clamp; 1001. Spring seat mounting hole; 1002. Limiting screw mounting hole. DETAILED DESCRIPTION

[0028] The present invention is described in detail below with reference to the accompanying drawings and embodiments. It is apparent that the embodiments described are only a portion of the embodiments of the present invention, rather than all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0029] The electrical conversion module of the embodiment is as follows Figure 1 As shown, it mainly consists of a mounting bracket 1, an electromagnetic coil 2, a coil top plate 3, a connecting rod 4, a baffle 5, a counterweight 6, a spring 7, a connecting plate 8, a limiting plate 9, an upper cover 10, a spring seat 11, a limiting screw 12, a locking screw 13, and a circuit board 14.

[0030] The mounting bracket 1 is a sheet metal part, which is formed by bending a thin plate. It can be regarded as consisting of a bottom plate 101 and a back plate 102. The cross section of the two is " " shape, wherein the bottom plate 101 is parallel to the horizontal plane and is mainly used for mounting the electromagnetic coil 2 and the connecting rod 4; the back plate 102 is perpendicular to the bottom plate 101 and is mainly used for mounting the baffle 5 and the limit plate 9. A connecting rod mounting hole 103 is provided on the bottom plate 101 for connecting and fixing the connecting rod 4.

[0031] The electromagnetic coil 2 rests flat on the bottom plate 101, with its central axis aligned with the central axis of the connecting rod mounting hole 103. The coil top plate 3 is fixed to the upper end surface of the electromagnetic coil 2 and is used to mount the upper cover 10. The coil top plate 3 is a thin plate structure with a connecting rod mounting hole 2 301, which is used to pass the connecting rod 4 through.

[0032] The connecting rod 4 is a hollow cylindrical structure, and one of its end faces has a nut 401. Making a sectional view through the central axis of the connecting rod 4, the sectional view of the connecting rod 4 is in the shape of a "T". The connecting rod 4 is successively passed through the second connecting rod mounting hole 301 of the coil top plate 3, the center of the electromagnetic coil 2, and the first connecting rod mounting hole 103 of the bottom plate 101, and the nut 401 of the connecting rod 4 will be stuck on the second connecting rod mounting hole 301. Connecting the connecting rod 4 with a nut on the first connecting rod mounting hole 103 and tightening it can fix the connecting rod 4, the coil top plate 3, the electromagnetic coil 2 and the mounting bracket 1 into a whole.

[0033] Gas flows in from the bottom of the connecting rod 4 and flows out from the top of the connecting rod 4. Blocking the top of the connecting rod 4 with the baffle 5 can adjust the pressure and flow rate of the gas.

[0034] The baffle 5 is a thin plate structure, placed flat on the upper end face of the back plate 102, and the baffle 5 is pressed down from top to bottom by the spring 7, so that the baffle 5 cannot move up and down, and can only rotate with the contact line between the baffle 5 and the back plate 102 as the rotation axis. Such a movement mode is very similar to a seesaw. When observing from directly above the coil top plate 3, with the upper end face of the back plate 102 as the boundary, the baffle 5 is divided into two parts: the long end 501 and the short end 502, and the long end 501 blocks the connecting rod 4, and the short end 502 does not block the bottom plate 101. Just applying a force to the long end 501 with the electromagnetic coil 2 can make the baffle 5 rotate like a seesaw.

[0035] In order to reduce the requirement for the force of the electromagnetic coil 2, a counterweight 6 is installed on the short end 502 of the baffle 5 to balance the weight of the long end 501.

[0036] The connecting piece 8 is fixed above the short end 502 of the baffle 5, and the counterweight 6 is fixed below the short end 502 of the baffle 5. A circular spring limiting part 801 is arranged on the connecting piece 8 to limit the horizontal movement of the spring 7. After the spring 7 is embedded inside the spring limiting part 801, it can only expand and contract in the vertical direction and cannot move in the horizontal direction.

[0037] The limiting piece 9 is cut from a thin plate, in the shape of a "U", and is fixed on the back plate 102. The two protruding parts of the limiting piece 9 are defined as clamping parts 901. When the baffle 5 moves horizontally away from the electromagnetic coil 2 and perpendicular to the back plate 102, it will touch the clamping part 901; when the baffle 5 moves horizontally away from the electromagnetic coil 2 and parallel to the back plate 102, it will also touch the clamping part 901; when the baffle 5 moves horizontally towards the electromagnetic coil 2 and perpendicular to the back plate 102, the counterweight 6 will touch the limiting piece 9. Due to the existence of the limiting piece 9, the baffle 5 cannot translate in the horizontal direction and can only rotate like a seesaw.

[0038] The upper cover 10 is a shell that mainly serves a protective function, protecting the movement of the baffle 5 from external damage. The upper cover 10 is provided with a through hole with a central axis perpendicular to the base plate 101, defined as a spring seat mounting hole 1001, for mounting the spring seat 11. The spring seat 11 passes through the spring seat mounting hole 1001 and is embedded in the center of the spring 7. The spring seat 11 is fixed by a set screw 13 on the side of the upper cover 10. Under the action of the spring seat 11 and the spring limiter 801 of the connecting piece 8, the spring 7 can only expand and contract in the vertical direction and cannot move in the horizontal direction. By adjusting the installation height of the set screw 13 and the spring seat 11, the elastic force of the spring 7 on the baffle 8 can be adjusted.

[0039] The upper cover 10 also has another through-hole, defined as a limit screw mounting hole 1002, with its central axis perpendicular to the base plate 101. This hole is used to mount a limit screw 12. This limit screw 12 is secured by a set screw 13 on the side of the upper cover 10. The lower end of the limit screw 11 passes through the limit screw mounting hole 1002 and is positioned above the long end 501 of the baffle 5, limiting the vertical movement of the long end 501 of the baffle 5. By adjusting the installation height of the set screw 13 and the limit screw 12, the vertical movement range of the long end 501 of the baffle 5 can be adjusted.

[0040] The mounting bracket 1, connecting rod 4, and baffle 5 are made of soft magnetic material. When the electromagnetic coil 2 is energized, the mounting bracket 1, connecting rod 4, and baffle 5 become magnetized. The long end 501 of the baffle 5 moves downward, approaching the connecting rod 4, while the short end 502 of the baffle 5 moves upward along with the weight stack 6. By varying the current in the electromagnetic coil 2, the distance between the baffle 5 and the connecting rod 4 can be adjusted, thereby regulating gas pressure and flow.

[0041] It is easy to see that only a very small force is needed to rotate the seesaw structure of the embodiment, so the working current of the embodiment is only 0-1.0 mA, and the power consumption is lower; when the current increment reaches 0.003 mA, the flow rate and pressure of the gas will change, and the sensitivity is higher.

[0042] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, for those of ordinary skill in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to specific details.

Claims

1. A soft magnetic counterweight nozzle baffle electrical conversion module, characterized by: It includes a mounting bracket (1), an electromagnetic coil (2), a coil top plate (3), a connecting rod (4), a baffle (5), a counterweight (6), and a spring (7); The mounting bracket (1) is composed of a bottom plate (101) and a back plate (102), the cross-sections of which are The bottom plate (101) is parallel to the horizontal plane, and the back plate (102) is perpendicular to the bottom plate (101); a connecting rod mounting hole (103) is provided on the bottom plate (101) for connecting and fixing the connecting rod (4); The electromagnetic coil (2) is placed flat on the bottom plate (101), and the central axis of the electromagnetic coil (2) coincides with the central axis of the connecting rod mounting hole (103); The coil top plate (3) is a thin plate structure and is provided with a second connecting rod mounting hole (301) for allowing the connecting rod (4) to pass through; The connecting rod (4) is a hollow cylindrical structure, and one of its end faces has a nut (401); a cross-sectional view is made through the central axis of the connecting rod (4), and the cross-sectional view of the connecting rod (4) is in the shape of a "T"; gas can flow through the inside of the connecting rod (4); the connecting rod (4) is sequentially passed through the connecting rod mounting hole 2 (301) of the coil top plate (3), the center of the electromagnetic coil (2), and the connecting rod mounting hole 1 (103) of the bottom plate (101), and the nut (401) of the connecting rod (4) will be stuck on the connecting rod mounting hole 2 (301); the connecting rod (4) is connected to the connecting rod mounting hole 1 (103) with a nut and tightened, so that the connecting rod (4), the coil top plate (3), the electromagnetic coil (2) and the mounting bracket (1) can be fixed into a whole; The baffle (5) is a thin plate structure, placed flat on the upper end surface of the back plate (102), and the baffle (5) is pressed downward from the top by a spring (7), so that the baffle (5) cannot move up and down, and can only rotate with the contact line between the baffle (5) and the back plate (102) as the rotation axis; when viewed from directly above the coil top plate (3) downward, the baffle (5) is divided into two parts with the upper end surface of the back plate (102) as the boundary: a long end (501) and a short end (502), and the long end (501) blocks the connecting rod (4), and the short end (502) does not block the bottom plate (101); The counterweight plate (6) is fixed to the short end (502) of the baffle (5); After the electromagnetic coil (2) is energized, the mounting bracket (1), the connecting rod (4) and the baffle (5) are magnetized, the long end (501) of the baffle (5) moves downward and approaches the connecting rod (4), and the short end (502) of the baffle (5) moves upward together with the counterweight (6).

2. The soft magnetic counterweight nozzle baffle electrical conversion module according to claim 1, characterized in that: The materials of the mounting bracket (1), the connecting rod (4) and the baffle (5) are soft magnetic materials.

3. The soft magnetic counterweight nozzle baffle electrical conversion module according to claim 1, characterized in that: The invention comprises a connecting piece (8); the connecting piece (8) is fixed above the short end (502) of the baffle (5); and the counterweight plate (6) is fixed below the short end (502) of the baffle (5); a spring stopper (801) in the shape of a circular ring is provided on the connecting piece (8) for limiting the movement of the spring (7) in the horizontal direction; after the spring (7) is embedded in the spring stopper (801), it can only expand and contract in the vertical direction and cannot move in the horizontal direction.

4. The soft magnetic counterweight nozzle baffle electrical conversion module according to claim 1, characterized in that: It includes a limiting piece (9); the limiting piece (9) is cut from a thin plate, shaped like a "U", and is fixed on the back plate (102); the two protruding parts of the limiting piece (9) are defined as clamping parts (901). When the baffle (5) moves away from the electromagnetic coil (2) in the horizontal plane and perpendicular to the back plate (102), it will touch the clamping part (901); when the baffle (5) moves away from the electromagnetic coil (2) in the horizontal plane and parallel to the back plate (102), it will also touch the clamping part (901); when the baffle (5) moves towards the electromagnetic coil (2) in the horizontal plane and perpendicular to the back plate (102), the counterweight piece (6) will touch the limiting piece (9).

5. The soft magnetic type counterweight nozzle baffle electrical conversion module according to claim 1, characterized in that: It includes an upper cover (10), a spring seat (11), a limit screw (12) and a set screw (13). The upper cover (10) is fixed to the coil top plate (3) by screws to form a closed space, and the baffle (5), the counterweight (6), the connecting piece (8) and the spring (7) are enclosed inside this space. The upper cover (10) is provided with a through hole with a central axis perpendicular to the bottom plate (101), defined as the spring seat mounting hole (1001), for installing the spring seat (11); the spring seat (11) passes through the spring seat mounting hole (1001) and is embedded in the center of the spring (7); the spring seat (11) is fixed by the set screw (13) on the side of the upper cover (10); the spring (7) can only expand and contract in the vertical direction and cannot move in the horizontal direction under the action of the spring seat (11) and the spring limiting part (801) of the connecting piece (8); by adjusting the installation height of the set screw (13) and the spring seat (11), the elastic force of the spring (7) on the baffle (8) can be adjusted. The upper cover (10) is also provided with another through hole with a central axis perpendicular to the bottom plate (101), defined as the limit screw mounting hole (1002), for installing the limit screw (12); the limit screw (12) is fixed by the set screw (13) on the side of the upper cover (10); the lower end surface of the limit screw (11) passes through the limit screw mounting hole (1002) and is located above the long end (501) of the baffle (5), restricting the up and down movement range of the long end (501) of the baffle (5); by adjusting the installation height of the set screw (13) and the limit screw (12), the up and down movement range of the long end (501) of the baffle (5) can be adjusted.

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