A static pressure characteristic test device for differential pressure transmitter

Abstract

The present invention discloses a static pressure characteristic test device for a differential pressure transmitter, which belongs to the technical field of differential pressure transmitter test equipment, and comprises: a pressure gauge base, on which a differential pressure transmitter body is mounted; a steering unit, which is rotatably connected to the pressure gauge base and connected to the differential pressure transmitter body through a placement unit; a reciprocating unit, which is slidably connected to the pressure gauge base, and whose end is slidably connected to the steering unit; and an adjusting unit, which is slidably connected to the reciprocating unit. The differential pressure transmitter can be clamped and fixed by the placement unit, and the reciprocating unit can intermittently slide on the pressure gauge base under the action of the adjusting unit. Through the cooperation of the reciprocating unit and the steering unit, the steering unit can drive the differential pressure transmitter body to turn counterclockwise and clockwise respectively with the two ends of the pressure gauge base as the axis, so that the observation and operation of the differential pressure transmitter body are more flexible.

Description

Technical Field

[0001] This invention relates to the field of differential pressure transmitter testing equipment technology, specifically to a differential pressure transmitter static pressure characteristic testing device. Background Technology

[0002] Chinese Patent (Publication No.: CN217953770U) discloses a static pressure characteristic testing device for a differential pressure transmitter, including a pressure gauge base. Pistons are symmetrically arranged at the top of the pressure gauge base, with limit devices at the top of the pistons. A piston cylinder is located in the middle of the two sets of pistons, and a fixed plate is located on the other side of the two sets of pistons. The inner side of the fixed plate is engaged with the pressure gauge via a buffer device. In this patent, a fixed rotating shaft is engaged with the outer side of the fixed plate on the side furthest from the buffer plate, allowing the fixed rotating shaft to move stably under the restriction of the fixed plate. As the fixed rotating shaft rotates and moves inward towards the fixed plate, multiple sets of rubber protrusions are evenly arranged on the inner side of the buffer plate, ensuring that the buffer plate fits against the bottom of the pressure gauge. When there is significant vibration, the vibration of the pressure gauge can be evenly distributed to the buffer plate. The force of the vibration is then further transmitted to the buffer springs on the other side of the buffer plate, where the two sets of buffer springs further disperse and buffer the vibration, thus providing multiple layers of buffer protection for the pressure gauge.

[0003] The differential pressure transmitter static pressure characteristic testing device in the above technical solution still has the following defects when in use: Since the differential pressure transmitter is fixedly installed on the pressure gauge base, the field testing environment of the differential pressure transmitter is complex and variable, so it is difficult to adjust the observation and operation angle of the differential pressure transmitter, which can easily affect the normal testing of the differential pressure transmitter. Therefore, it is necessary to provide a differential pressure transmitter static pressure characteristic testing device to solve the above problems. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a differential pressure transmitter static pressure characteristic testing device to solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A differential pressure transmitter static pressure characteristic testing device includes:

[0007] A pressure gauge base on which a differential pressure transmitter body is mounted;

[0008] The steering unit is rotatably connected to the pressure gauge base and is connected to the differential pressure transmitter body through the placement unit. The placement unit is used to clamp and fix the differential pressure transmitter body.

[0009] The reciprocating unit is slidably connected to the pressure gauge base, and its end is slidably connected to the steering unit. The steering unit is used to drive the differential pressure transmitter body to perform dual-axis alternating steering under the push of the reciprocating unit.

[0010] The adjustment unit is slidably connected to the reciprocating unit and is used to drive the reciprocating unit to perform intermittent reciprocating sliding.

[0011] As a preferred embodiment of the present invention, the steering unit includes a first arc-shaped frame fixed to the side of the pressure gauge base; a second arc-shaped frame fixed to the side of the pressure gauge base away from the first arc-shaped frame; a steering frame slidably connected to the inner wall of the pressure gauge base, with a connecting frame fixed to its central side; a first rotating shaft installed on one end side of the steering frame, slidably connected to the pressure gauge base and rotatably connected to the first arc-shaped frame; and a second rotating shaft installed on the other end side of the steering frame away from the first rotating shaft, slidably connected to the pressure gauge base and rotatably connected to the second arc-shaped frame.

[0012] As a preferred embodiment of the present invention, the reciprocating unit includes a bracket fixed to the side of the pressure gauge base, with a fixed frame connected to the side; a rotating shaft rotatably connected inside the fixed frame, with a rotating wheel mounted on its surface; a rotating column eccentrically fixed to the rotating wheel; a guide groove formed at the end of the bracket, with a reciprocating frame slidably connected inside; a first sliding groove formed on one side of the reciprocating frame, with the end of the rotating column slidably connected in the first sliding groove; a second sliding groove formed on the side of the reciprocating frame away from the first sliding groove; and a sliding column fixed to the side of the connecting frame, with its end slidably connected in the second sliding groove.

[0013] As a preferred embodiment of the present invention, the adjustment unit includes: teeth fixed to the surface of the rotating wheel; a sliding frame slidably connected at its end to the fixed frame, with a slot formed on its surface; a first lever fixed to the inner wall of the slot, with a first arc-shaped surface formed at its end; a second lever fixed to the inner wall of the slot away from the first lever, with both levers installed in the slot, the second lever having a second arc-shaped surface formed at its end, and the first and second levers slidably connected to the side surface of the teeth respectively; a sliding groove formed on the fixed frame; and a handle fixed at its end to the side surface of the sliding frame, with its surface slidably connected to the sliding groove.

[0014] As a preferred embodiment of the present invention, the placement unit includes: a support frame, one end of which is fixed to the surface of the bogie, and the other end of which is connected to a placement frame; an inclined surface, formed on the support frame, wherein a limiting groove is formed on the surface of the inclined surface; a lifting rod, slidably connected inside the placement frame, wherein a placement plate is fixed at its end; a figure-eight frame, fixed to the end of the lifting rod away from the placement plate, wherein a sliding rod is slidably connected inside, and the end of the sliding rod is slidably connected inside the limiting groove; and a clamping member, connected to the end of the sliding rod away from the limiting groove.

[0015] As a preferred embodiment of the present invention, the placement rack is provided with a clearance groove, and the end of the clamping member is slidably connected in the clearance groove.

[0016] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: When using the differential pressure transmitter body, the present invention places the differential pressure transmitter body on the surface of the placement unit, so that the differential pressure transmitter body is clamped and fixed under the action of the placement unit.

[0017] Compared to existing technologies where the observation and operation angles of the differential pressure transmitter cannot be adjusted, thus easily affecting normal testing, this invention addresses this issue by incorporating a steering unit and an adjustment unit. By pulling the adjustment unit up and down, the reciprocating unit can intermittently slide on the pressure gauge base under the action of the adjustment unit. Through the cooperation of the reciprocating unit and the steering unit, the steering unit can drive the differential pressure transmitter body to rotate counterclockwise and clockwise around the two ends of the pressure gauge base, respectively. This not only adjusts the rotation angle of the differential pressure transmitter body but also its rotation direction, thereby making the observation and operation of the differential pressure transmitter body more flexible and improving the accuracy of differential pressure transmitter testing.

[0018] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the differential pressure transmitter static pressure characteristic testing device provided in an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the steering unit provided in an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the reciprocating unit provided in an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the adjustment unit provided in an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the placement unit provided in an embodiment of the present invention.

[0024] Reference numerals: 1. Pressure gauge base; 11. Differential pressure transmitter body; 12. Lifting lug; 2. Steering unit; 21. First arc-shaped frame; 22. Second arc-shaped frame; 23. First rotating shaft; 24. Second rotating shaft; 25. Bogie; 26. Connecting frame; 3. Reciprocating unit; 31. Support; 32. Fixed frame; 321. Rotating shaft; 33. Rotating wheel; 331. Rotating column; 34. Reciprocating frame; 341. First slide groove; 342. Second slide groove; 35. Sliding column; 36. 4. Guide groove; 5. Adjustment unit; 6. Tooth; 7. Sliding frame; 8. Empty groove; 9. First lever; 10. First arc surface; 11. Second lever; 22. Second arc surface; 3. Sliding groove; 43. Handle; 5. Placement unit; 6. Support frame; 7. Inclined surface; 8. Limiting groove; 9. Placement frame; 10. Lifting rod; 11. Figure-eight frame; 12. Placement tray; 13. Sliding rod; 14. Clamping component; 15. Clearance groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0026] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0027] See Figures 1 to 5 A differential pressure transmitter static pressure characteristic testing device, comprising:

[0028] Pressure gauge base 1, on which a differential pressure transmitter body 11 is mounted;

[0029] The steering unit 2 is rotatably connected to the pressure gauge base 1 and is connected to the differential pressure transmitter body 11 through the placement unit 5. The placement unit 5 is used to clamp and fix the differential pressure transmitter body 11.

[0030] The reciprocating unit 3 is slidably connected to the pressure gauge base 1, and its end is slidably connected to the steering unit 2. The steering unit 2 is used to drive the differential pressure transmitter body 11 to perform dual-axis alternating steering under the push of the reciprocating unit 3.

[0031] Adjustment unit 4 is slidably connected to reciprocating unit 3 and is used to drive reciprocating unit 3 to perform intermittent reciprocating sliding.

[0032] In an embodiment of the present invention, when using the differential pressure transmitter body 11, the differential pressure transmitter body 11 is placed on the surface of the placement unit 5, so that the differential pressure transmitter body 11 is clamped and fixed under the action of the placement unit 5. Pulling the adjustment unit 4 up and down, the reciprocating unit 3 can slide intermittently on the pressure gauge base 1 under the action of the adjustment unit 4. Through the cooperation of the reciprocating unit 3 and the steering unit 2, the steering unit 2 can drive the differential pressure transmitter body 11 to rotate counterclockwise and clockwise about the two ends of the pressure gauge base 1, respectively. This not only adjusts the rotation angle of the differential pressure transmitter body 11, but also adjusts the rotation direction of the differential pressure transmitter body 11, making the observation and operation of the differential pressure transmitter body 11 more flexible.

[0033] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, the steering unit 2 includes:

[0034] The first arc-shaped frame 21 is fixed to the side of the pressure gauge base 1;

[0035] The second arc-shaped frame 22 is fixed on the side of the pressure gauge base 1 away from the first arc-shaped frame 21;

[0036] Bogie 25, sliding connection to the inner wall of pressure gauge base 1, with connecting bracket 26 fixed to the center side;

[0037] The first rotating shaft 23 is installed on one end side of the bogie 25, and is slidably connected to the pressure gauge base 1 and rotatably connected to the first arc-shaped frame 21.

[0038] The second rotating shaft 24 is installed on the side of the other end of the bogie 25 away from the first rotating shaft 23, and is slidably connected to the pressure gauge base 1 and rotatably connected to the second arc-shaped frame 22.

[0039] In this embodiment, a lifting lug 12 is fixed to the side of the pressure gauge base 1. The pressure gauge base 1 can be installed and fixed by the cooperation of the lifting lug 12 and bolts. When using the differential pressure transmitter body 11, the differential pressure transmitter body 11 is placed on the surface of the placement unit 5, so that the differential pressure transmitter body 11 is clamped and fixed under the action of the placement unit 5.

[0040] When it is necessary to adjust the observation or usage angle of the differential pressure transmitter body 11, the adjustment unit 4 is turned on. The adjustment unit 4 can drive the connecting frame 26 to slide back and forth along the pressure gauge base 1 through the connection with the reciprocating unit 3.

[0041] When the connecting frame 26 drives the bogie 25 to slide towards the first arc frame 21, the bogie 25 can drive the first rotating shaft 23 and the second rotating shaft 24 to slide on the surface of the pressure gauge base 1 towards the first arc frame 21, until the first rotating shaft 23 slides into the first arc frame 21.

[0042] When the first rotating shaft 23 slides into the interior of the first arc-shaped frame 21, the connecting frame 26 will drive the first rotating shaft 23 to rotate counterclockwise within the first arc-shaped frame 21 via the steering frame 25. This allows the steering frame 25 to drive the differential pressure transmitter body 11 inside it to the left via the placement unit 5. Figure 2 The device can be turned to the left (middle left) so that the viewing and usage angle of the differential pressure transmitter body 11 can be adjusted.

[0043] When the connecting frame 26 drives the bogie 25 to slide towards the second arc frame 22, the working process is reversed. At this time, the bogie 25 can drive the first rotating shaft 23 and the second rotating shaft 24 to slide on the surface of the pressure gauge base 1 towards the second arc frame 22 until the second rotating shaft 24 slides into the second arc frame 22.

[0044] When the second rotating shaft 24 slides into the interior of the second arc-shaped frame 22, the connecting frame 26 will drive the second rotating shaft 24 to rotate clockwise within the second arc-shaped frame 22 via the steering frame 25. This allows the steering frame 25 to drive the differential pressure transmitter body 11 inside it to the right via the placement unit 5. Figure 2 The differential pressure transmitter body 11 can be turned to the right side, thereby adjusting the viewing and usage angle of the differential pressure transmitter body 11 so that it can adapt to different detection environments.

[0045] With the arrangement of the first arc frame 21 and the second arc frame 22, the bogie 25 can rotate counterclockwise and clockwise within the first arc frame 21 and the second arc frame 22 respectively, with the first rotating shaft 23 and the second rotating shaft 24 as the axis. This allows for adjustment not only of the rotation angle of the differential pressure transmitter body 11, but also of the rotation direction of the differential pressure transmitter body 11, making the observation and operation of the differential pressure transmitter body 11 more flexible.

[0046] In one embodiment of the present invention, Figure 2 and Figure 3 As shown, the reciprocating unit 3 includes:

[0047] The bracket 31 is fixed to the side of the pressure gauge base 1, and the side is connected to the fixing bracket 32;

[0048] A rotating shaft 321 is rotatably connected inside a fixed frame 32, and a rotating wheel 33 is mounted on its surface.

[0049] The rotating column 331 is eccentrically fixed on the rotating wheel 33;

[0050] Guide groove 36 is provided at the end of bracket 31, and reciprocating frame 34 is slidably connected inside it;

[0051] The first slide groove 341 is formed on one side of the reciprocating frame 34, and the end of the rotating column 331 is slidably connected in the first slide groove 341.

[0052] The second slide 342 is located on the side of the reciprocating frame 34 away from the first slide 341;

[0053] The sliding column 35 is fixed to the side of the connecting frame 26, and its end is slidably connected in the second sliding groove 342.

[0054] In this embodiment, the adjustment unit 4 is activated. The adjustment unit 4 drives the rotating shaft 321 to rotate within the fixed frame 32 via the rotating wheel 33. When the rotating wheel 33 rotates, it can drive the rotating column 331 on its surface to rotate synchronously. Since the end of the rotating column 331 is slidably connected to the inside of the first sliding groove 341, the end of the reciprocating frame 34 can reciprocate and slide alternately within the guide groove 36 under the action of the rotating column 331 and the first sliding groove 341.

[0055] When the end of the reciprocating frame 34 slides in the guide groove 36 toward the first arc frame 21, the reciprocating frame 34 can drive the second sliding groove 342 on its side to slide synchronously. Since the second sliding groove 342 and the end of the sliding column 35 are slidably connected, the connecting frame 26 will be driven by the sliding column 35 and the second sliding groove 342 to drive the first rotating shaft 23 and the second rotating shaft 24 to slide on the surface of the pressure gauge base 1 toward the first arc frame 21 through the steering frame 25, until the first rotating shaft 23 slides into the interior of the first arc frame 21.

[0056] When the first rotating shaft 23 slides into the interior of the first arc frame 21, the reciprocating frame 34 continues to slide towards the first arc frame 21 in the guide groove 36 under the action of the rotating column 331 and the first slide groove 341. As a result, the reciprocating frame 34 will continue to drive the second slide groove 342 to slide towards the first arc frame 21. Therefore, the connecting frame 26 will drive the first rotating shaft 23 to rotate counterclockwise in the first arc frame 21 through the steering frame 25 under the action of the sliding column 35 and the second slide groove 342. Thus, the steering frame 25 can drive the differential pressure transmitter body 11 to rotate counterclockwise through the placement unit 5, thereby allowing the observation and operation angle of the differential pressure transmitter body 11 to be adjusted.

[0057] When the rotating wheel 33 drives the rotating column 331 to rotate to the leftmost point ( Figure 1 , Figure 2 (on the left side), at this time the reciprocating frame 34 slides to the leftmost end ( Figure 1(At the left end), and the bogie 25 drives the differential pressure transmitter body 11 to rotate counterclockwise to the maximum angle via the placement unit 5. Afterwards, the reciprocating frame 34 moves to the right within the guide groove 36 ( Figure 1 The reciprocating frame 34 drives the second slide groove 342 to slide synchronously to the right. At this time, the connecting frame 26 will be driven by the sliding column 35 and the second slide groove 342 to drive the first rotating shaft 23 to rotate clockwise in the first arc frame 21 through the bogie 25 until the bogie 25 rotates to a horizontal state. At this time, the differential pressure transmitter body 11 also rotates to a horizontal state.

[0058] As the reciprocating frame 34 continues to slide to the right within the guide groove 36, the connecting frame 26, under the action of the sliding column 35 and the second sliding groove 342, will drive the first rotating shaft 23 and the second rotating shaft 24 to slide towards the second arc-shaped frame 22 on the surface of the pressure gauge base 1 via the bogie 25, until the second rotating shaft 24 slides into the second arc-shaped frame 22 (e.g., Figure 1 , Figure 2 (state).

[0059] After the second rotating shaft 24 slides into the interior of the second arc-shaped frame 22, the reciprocating frame 34 continues to slide to the right within the guide groove 36. Therefore, the connecting frame 26, under the action of the sliding column 35 and the second sliding groove 342, will drive the second rotating shaft 24 to rotate clockwise within the second arc-shaped frame 22 via the bogie 25. The bogie 25 can drive the differential pressure transmitter body 11 inside it to the right via the placement unit 5. Figure 2 The steering wheel 33 rotates to the rightmost point (right side). When the rotating column 331 rotates to the far right point (right side) Figure 1 , Figure 2 (on the right side), at this time the reciprocating frame 34 slides to the far right end ( Figure 1 (middle right end), and the bogie 25 drives the differential pressure transmitter body 11 to rotate clockwise to the maximum angle through the placement unit 5.

[0060] When the rotating column 331 rotates to its rightmost point, and the wheel 33 continues to rotate, the reciprocating frame 34 will slide to the left in the opposite direction, causing the differential pressure transmitter body 11 to rotate counterclockwise to a horizontal position, and repeating the above working process. Through the cooperation of the reciprocating unit 3 and the steering unit 2, the bogie 25 can rotate counterclockwise and clockwise within the first arc frame 21 and the second arc frame 22 with the first rotating shaft 23 and the second rotating shaft 24 as the axes, respectively. This not only allows adjustment of the rotation angle of the differential pressure transmitter body 11, but also the rotation direction of the differential pressure transmitter body 11, thus making the observation and operation of the differential pressure transmitter body 11 more flexible.

[0061] In one embodiment of the present invention, Figure 3 and Figure 4As shown, the adjustment unit 4 includes:

[0062] Tooth 41 is fixed to the surface of the rotating wheel 33;

[0063] The sliding frame 42 is slidably connected to the fixed frame 32 at its end, and has a slot 421 on its surface.

[0064] The first lever 43 is fixed to the inner wall of the slot 421, and the end is provided with a first arc-shaped surface 431;

[0065] The second lever 44 is fixed to the inner wall of the slot 421 away from the first lever 43, and the first lever 43 and the second lever 44 are installed in the slot 421. The end of the second lever 44 is provided with a second arc-shaped surface 441. The first lever 43 and the second lever 44 are slidably connected to the side of the tooth 41 respectively.

[0066] A sliding groove 45 is formed on the fixed frame 32;

[0067] The handle 46 is fixed at its end to the side of the sliding frame 42 and its surface is slidably connected to the sliding groove 45.

[0068] In this embodiment, pulling down the handle 46 allows it to slide downward within the sliding groove 45, and the handle 46 can also drive the sliding frame 42 to slide downward within the fixed frame 32. Thus, the sliding frame 42 can drive the first lever 43 and the second lever 44 to slide downward through the slot 421. Figure 4 As shown, the first arc-shaped surface 431 at the end of the first lever 43 will contact the tooth 41 (hereinafter referred to as tooth A). Thus, tooth A will be pushed by the first arc-shaped surface 431 and drive the rotating shaft 321 to rotate clockwise in the fixed frame 32 through the rotating wheel 33 until the first lever 43 slides completely into the gap between the two sets of teeth 41 (tooth A and its adjacent teeth). At this time, the two sets of teeth 41 will limit the rotating wheel 33 under the action of the first lever 43, and the rotating wheel 33 will stop rotating.

[0069] Pulling the handle 46 upwards causes the sliding frame 42 to slide upwards within the fixed frame 32. The sliding frame 42 then slides upwards through the slot 421, causing the first lever 43 and the second lever 44 to slide upwards. The first lever 43 slides upwards until it disengages from the two sets of teeth 41. Once the first lever 43 has disengaged from the gap between the two sets of teeth 41, the second arc-shaped surface 441 at the end of the second lever 44 contacts tooth A. Tooth A, pushed by the second arc-shaped surface 441, drives the rotating shaft 321 to rotate clockwise within the fixed frame 32 via the rotating wheel 33 until the second lever 44 slides into the gap between the two sets of teeth 41 (tooth A and its adjacent teeth). At this point, the two sets of teeth 41 limit the rotation of the rotating wheel 33 under the action of the second lever 44, and the rotating wheel 33 stops rotating.

[0070] Pulling the handle 46 downwards causes the sliding frame 42 to slide downwards via the slot 421, driving the first lever 43 and the second lever 44. Since tooth A has rotated, the first arc-shaped surface 431 at the end of the first lever 43 will contact the adjacent tooth of tooth A (hereinafter referred to as tooth B). As in the above process, tooth B will be pushed by the first arc-shaped surface 431, which will drive the rotating shaft 321 to rotate clockwise within the fixed frame 32 via the rotating wheel 33 until the first lever 43 slides completely into the gap between the two sets of teeth 41 (tooth B and its adjacent teeth), thereby limiting the rotating wheel 33 again. The above process is repeated. By pulling the handle 46 up and down, the sliding frame 42 will slide up and down repeatedly, causing the rotating wheel 33 to rotate intermittently clockwise.

[0071] With adjustment unit 4, pulling handle 46 up and down causes the rotary wheel 33 to rotate intermittently clockwise. This, in turn, drives the rotating column 331 to rotate intermittently clockwise. Since the end of the rotating column 331 is slidably connected to the first slide groove 341, the reciprocating frame 34 will slide intermittently back and forth in the guide groove 36 under the action of the rotating column 331 and the first slide groove 341. Thus, the reciprocating frame 34 can drive the differential pressure transmitter body 11 to rotate counterclockwise and clockwise in the first arc frame 21 and the second arc frame 22 with the first rotating shaft 23 or the second rotating shaft 24 as the axis. This allows for adjustment not only of the rotation angle of the differential pressure transmitter body 11 but also of its rotation direction, making the observation and operation of the differential pressure transmitter body 11 more flexible.

[0072] After the handle 46 is released, the sliding frame 42 will slide down to the lowest point in the fixed frame 32 under its own weight. At this time, the sliding frame 42 can drive the first lever 43 to engage between the two sets of teeth 41 through the slot 421. Thus, the wheel 33 will be limited and fixed under the action of the first lever 43 and the two sets of teeth 41. This can limit and fix the position of the reciprocating frame 34 sliding in the guide slot 36, and further limit and fix the angle of the differential pressure transmitter body 11 after the bogie 25 drives it to turn, ensuring the stability of the differential pressure transmitter body 11 after angle adjustment.

[0073] In one embodiment of the present invention, Figure 3 and Figure 5 As shown, the placement unit 5 includes:

[0074] The support frame 51 has one end fixed to the surface of the bogie 25 and the other end connected to the placement frame 52;

[0075] An inclined surface 511 is formed on the support frame 51, and a limiting groove 512 is formed on the surface of the inclined surface 511;

[0076] The lifting rod 53 is slidably connected inside the placement frame 52, and a placement plate 54 is fixed at its end;

[0077] The figure-eight frame 531 is fixed to the end of the lifting rod 53 away from the placement plate 54, and a sliding rod 55 is slidably connected inside it. The end of the sliding rod 55 is slidably connected in the limiting groove 512.

[0078] The clamping member 56 is connected to the end of the slide bar 55 away from the limiting groove 512.

[0079] In this embodiment, when placing the differential pressure transmitter body 11, the four sets of clamping members 56 are first pulled outwards, causing the clamping members 56 to slide to the outermost position. The differential pressure transmitter body 11 is then placed on the surface of the placement tray 54. Under the weight of the differential pressure transmitter body 11, the placement tray 54 causes the lifting rod 53 to slide downwards within the placement frame 52. The lifting rod 53 then drives the sliding rod 55 downwards via the V-shaped bracket 531. Since the inner end of the sliding rod 55 is slidably connected within the limiting groove 512, the sliding rod 55 slides inwards within the V-shaped bracket 531 under the action of the limiting groove 512 as it slides downwards. Consequently, the sliding rod 55 drives the clamping members 56 to slide inwards until they contact the side of the differential pressure transmitter body 11. This allows the differential pressure transmitter body 11 to be limited and fixed by the four sets of clamping members 56, improving the stability of the differential pressure transmitter body 11 placed on the surface of the placement tray 54.

[0080] When disassembling the differential pressure transmitter body 11, simply lift the differential pressure transmitter body 11 upwards and pull the four sets of clamping members 56 outwards until the clamping members 56 detach from the surface of the differential pressure transmitter body 11, thereby disassembling the differential pressure transmitter body 11.

[0081] Furthermore, the side of the differential pressure transmitter body 11 can also have a slot, and the clamping member 56 is engaged in the slot. The cooperation between the slot and the clamping member 56 can further improve the stability of the differential pressure transmitter body 11 after placement.

[0082] In one embodiment of the present invention, Figure 2 As shown, the placement frame 52 has a clearance groove 57, and the end of the clamping member 56 is slidably connected within the clearance groove 57. In this embodiment, when placing the differential pressure transmitter body 11, since the end of the clamping member 56 can slide within the clearance groove 57, the clamping member 56 can adapt to differential pressure transmitter bodies 11 of different specifications.

[0083] The working principle of this invention is as follows: when using the differential pressure transmitter body 11, the differential pressure transmitter body 11 is placed on the surface of the placement unit 5, so that the differential pressure transmitter body 11 is clamped and fixed under the action of the placement unit 5.

[0084] Pulling the handle 46 up or down causes the wheel 33 to rotate intermittently clockwise, which in turn drives the rotating column 331 to rotate intermittently clockwise. Since the end of the rotating column 331 is slidably connected to the first slide groove 341, the reciprocating frame 34 will slide intermittently back and forth in the guide groove 36 under the action of the rotating column 331 and the first slide groove 341. Thus, the reciprocating frame 34 can drive the differential pressure transmitter body 11 to rotate counterclockwise and clockwise in the first arc frame 21 and the second arc frame 22 with the first rotating shaft 23 or the second rotating shaft 24 as the axis. This not only allows adjustment of the rotation angle of the differential pressure transmitter body 11, but also the rotation direction of the differential pressure transmitter body 11, making the observation and operation of the differential pressure transmitter body 11 more flexible.

[0085] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A static pressure characteristic test device for a differential pressure transmitter, characterized in that: The static pressure characteristic testing device of the differential pressure transmitter comprises: A pressure gauge base (1), wherein a differential pressure transmitter body (11) is mounted on the pressure gauge base (1); A steering unit (2) is rotatably connected to the pressure gauge base (1) and connected to the differential pressure transmitter body (11) via a placement unit (5). The placement unit (5) is used to clamp and fix the differential pressure transmitter body (11). The steering unit (2) comprises: a first arc frame (21) fixed to the side of the pressure gauge base (1); a second arc frame (22) fixed to the side of the pressure gauge base (1) away from the first arc frame (21); a steering frame (25) slidably connected to the inner wall of the pressure gauge base (1), and a connecting frame (26) is fixed to the central side; a first rotating shaft (23) is mounted on the side of one end of the steering frame (25), the surface of which is slidably connected to the pressure gauge base (1), and the first rotating shaft (24) is mounted on the side of the other end of the steering frame (25) away from the first rotating shaft (23), the surface of which is slidably connected to the pressure gauge base (1), and the second rotating shaft (24) is mounted on the side of the other end of the steering frame (25) away from the first rotating shaft (23), the surface of which is slidably connected to the pressure gauge base (1), and the second rotating shaft (22) is rotatably connected to the second arc frame (22); The reciprocating unit (3) is slidably connected to the pressure gauge base (1), and the end portion is slidably connected to the steering unit (2). The steering unit (2) is used to drive the differential pressure transmitter body (11) to perform dual-axis alternating steering under the push of the reciprocating unit (3). The reciprocating unit (3) comprises: a bracket (31) fixed to the side of the pressure gauge base (1), and the side is connected to a fixing frame (32); a rotating shaft (321) rotatably connected in the fixing frame (32), and a rotating wheel (33) is installed on the surface; a rotating column (331), The eccentric part is fixed on the rotating wheel (33); the guide groove (36) is provided at the end of the bracket (31), and the reciprocating frame (34) is slidably connected inside; the first slide groove (341) is provided at one side of the reciprocating frame (34), and the end of the rotating column (331) is slidably connected in the first slide groove (341); the second slide groove (342) is provided at the side of the reciprocating frame (34) away from the first slide groove (341); the sliding column (35) is fixed on the side of the connecting frame (26), and the end thereof is slidably connected in the second slide groove (342); The adjusting unit (4) is slidably connected to the reciprocating unit (3) and is used to drive the reciprocating unit (3) to perform intermittent reciprocating sliding.

2. The static pressure characteristic testing device of the differential pressure transmitter according to claim 1, characterized in that: The regulating unit (4) comprises: Teeth (41) are fixed on the surface of the rotating wheel (33); A sliding frame (42), the end of which is slidably connected in the fixed frame (32), and a hollow groove (421) is formed on the surface; A first pull rod (43) is fixed to the inner wall of the slot (421) and has a first arc surface (431) at its end; The second pull rod (44) is fixed on the inner wall of the empty slot (421) away from the first pull rod (43), and the first pull rod (43) and the second pull rod (44) are installed in the empty slot (421), and the end of the second pull rod (44) is provided with a second arc surface (441), and the first pull rod (43) and the second pull rod (44) are respectively slidably connected to the side surface of the tooth (41); A sliding groove (45) is provided on the fixing frame (32); The handle (46) has an end portion fixed to the side of the sliding frame (42) and a surface slidably connected in the sliding groove (45).

3. The static pressure characteristic testing device of the differential pressure transmitter according to claim 1, characterized in that: The placement unit (5) comprises: A support frame (51), one end of which is fixed to the surface of the bogie (25), and the other end of which is connected to a placement frame (52); An inclined surface (511) is provided on the support frame (51), and a limiting groove (512) is provided on the surface of the inclined surface (511); A lifting rod (53) is slidably connected in the placement frame (52), and a placement plate (54) is fixed at the end thereof; An eight-shaped frame (531) is fixed to the end of the lifting rod (53) away from the placement plate (54), and is slidably connected to a sliding rod (55) inside, and the end of the sliding rod (55) is slidably connected to the limiting groove (512); The clamping member (56) is connected to the end of the sliding rod (55) away from the limiting groove (512).

4. The static pressure characteristic testing device of the differential pressure transmitter according to claim 3 is characterized in that: The placement rack (52) is provided with an avoidance groove (57), and the end of the clamping member (56) is slidably connected in the avoidance groove (57).

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