Damping device for gear flow meter

Abstract

The utility model relates to the technical field of gear flow meters, and discloses a gear flow meter damping device which comprises a gear flow meter and a damping device body arranged at the discharge end of the gear flow meter, the damping device body comprises a transition pipe communicated with a discharge pipe of the gear flow meter, and connecting rings are arranged at the two ends of the transition pipe. The transition pipe and the discharge pipe are in coupling connection through a connecting flange and a connecting ring, a peripheral vibration reduction unit is arranged at the coupling position of the transition pipe and the discharge pipe, and a vertical vibration reduction unit is further arranged below the peripheral vibration reduction unit; by arranging the peripheral vibration reduction unit, vibration at the coupling part is preliminarily buffered, and the swing amplitude is reduced; moreover, by arranging the vertical vibration reduction unit, on one hand, impact energy borne by the peripheral vibration reduction unit can be transmitted to other fixed objects, on the other hand, vertical displacement of the peripheral vibration reduction unit and the coupling position is allowed to happen to a certain degree, and therefore the buffering and vibration reduction effect in the vertical direction is further enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of gear flow meter technology, and specifically relates to a gear flow meter vibration reduction device. Background Technology

[0002] Gear flow meters are a type of volumetric flow meter that uses mechanical measuring elements to continuously divide a fluid into individual, known volume portions. The total fluid volume is measured by the number of times the measuring chamber is repeatedly filled and discharged into each volume portion. They are used for continuous or intermittent measurement of the flow rate or instantaneous flow rate of liquids in pipelines. Due to their stable structure and strong transmission capacity, they are widely used in the metering of high-viscosity media such as heavy oil, polyvinyl alcohol, and resins.

[0003] During the measurement process, the pulsation of the fluid causes the gear flow meter to vibrate, and the frequency and amplitude of this vibration often depend on the fluid velocity. In particular, the connection between the gear flow meter and the pipeline can experience fatigue effects under prolonged vibration. This manifests as plastic deformation at the connection, and in severe cases, the connection may break after reaching its yield strength, causing fluid leakage from the pipeline. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to provide a vibration damping device for gear flow meters, so as to solve the technical problem of damage caused by vibration at the connection between the gear flow meter and the pipeline in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A vibration damping device for a gear flow meter includes a gear flow meter and a vibration damping device disposed at the discharge end of the gear flow meter. The vibration damping device includes a transition pipe communicating with the discharge pipe of the gear flow meter. Connecting rings are provided at both ends of the transition pipe. A connecting flange is provided at the pipe opening of the discharge pipe. The transition pipe and the discharge pipe are coupled together through the connecting flange and the connecting ring. The connecting flange and the connecting ring constitute a coupling component. A peripheral vibration damping unit is provided at the coupling point between the transition pipe and the discharge pipe. The peripheral vibration damping unit includes a limiting ring sleeved around the coupling component. A gap is left between the limiting ring and the coupling component. Multiple airbags are evenly spaced along the circumference at the gap. A vertical vibration damping unit is also provided below the peripheral vibration damping unit.

[0007] Furthermore, four airbags are evenly spaced circumferentially at the gap. The cross-section of the airbag is fan-shaped, and its outer side is fixed to the inner side of the limiting ring. Its inner side is in contact with the coupling component. Each airbag is equipped with an inflation port, and the air pressure of the airbag is adaptively adjusted according to the fluid flow rate.

[0008] Further, the vertical damping unit comprises a support plate fixedly connected with the ground and a vertical support for supporting the circumferential damping unit, the vertical support comprises fixed columns located on both sides of the limiting ring, the bottom of the fixed column is fixedly connected with the support plate, the top of the fixed column is open and forms a vertical sliding groove, a sliding column is slidably connected in the vertical sliding groove, the top surface of the sliding column is fixedly connected with the outer surface of the limiting ring, and a second spring vertically extending is arranged between the bottom surface of the sliding column and the bottom of the sliding groove;

[0009] Further, a horizontal elastic limiting unit is further arranged, the horizontal elastic limiting unit comprises a limiting groove formed on the upper surface of the support plate, a sliding plate is slidably connected in the limiting groove, the bottom surface of the fixed column is fixedly connected with the upper surface of the sliding plate, a plurality of third springs are arranged around the sliding plate, and the sliding plate is elastically connected with the support plate under the action of the third springs.

[0010] Further, the bottom of the limiting groove is provided with a plurality of hemispherical sliding protrusions which are arranged in a matrix, and the bottom surface of the sliding plate is in smooth contact with the sliding protrusions.

[0011] Further, an observation opening is formed in the bottom plate of the flow meter body, the projection of the observation opening along the height direction can cover the meshing area between the two gears, and a sealing plate is detachably connected to the observation opening.

[0012] Further, an inner corrugated pipe and an outer corrugated pipe sleeved outside the inner corrugated pipe are arranged between the two side connecting rings, a space is left between the inner corrugated pipe and the outer corrugated pipe, a first spring is arranged between the inner corrugated pipe and the outer corrugated pipe, and the first spring is sleeved outside the inner corrugated pipe.

[0013] The beneficial effects of the utility model lie in:

[0014] Compared with the prior art, first, the circumferential damping unit is arranged to preliminarily buffer the vibration at the coupling part and reduce the swing amplitude; second, the vertical damping unit is arranged, on the one hand, the impact energy received by the circumferential damping unit can be transmitted to other fixed objects (such as the ground), and on the other hand, the circumferential damping unit and the coupling part are allowed to vertically displace to some extent, so that the buffering and damping effect in the vertical direction is further enhanced; finally, the horizontal elastic limiting unit is arranged, so that the pipeline coupling part and the circumferential damping unit and the vertical damping unit are allowed to displace to some extent in the horizontal direction, and the buffering and damping effect in the horizontal direction is further enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to make the purpose, technical scheme and beneficial effects of the utility model more clear, the utility model provides the following drawings for description:

[0016] Figure 1 It is a whole structure schematic view of the gear flow meter damping device in the utility model embodiment one;

[0017] Figure 2 It is the sectional view of the gear flowmeter in the embodiment one of the utility model;

[0018] Figure 3 It is the structure schematic view of the circumferential damping unit and vertical damping unit in the embodiment one of the utility model;

[0019] Figure 4 It is the schematic view of the transition pipe in the embodiment one of the utility model;

[0020] Figure 5 It is the sectional view of the transition pipe in the embodiment one of the utility model;

[0021] Figure 6 It is the schematic view of the vertical support in the embodiment one of the utility model;

[0022] Figure 7 It is the overall structure schematic view of the gear flowmeter damping device in the embodiment two of the utility model;

[0023] Figure 8 It is the top view of the horizontal elastic limiting unit in the embodiment two of the utility model.

[0024] The marks in the drawing are as follows:

[0025] Gear flowmeter 1, flowmeter body 101, measuring cavity 102, gear 103, observation port 104, feeding pipe 2, discharge pipe 3, connecting flange 4, damping device 5, transition pipe 51, connecting ring 511, inner bellow 512, outer bellow 513, first spring 514, circumferential damping unit 52, limiting ring 521, air bag 522, vertical damping unit 53, support plate 531, fixed column 532, sliding column 533, second spring 534, horizontal elastic limiting unit 54, limiting groove 541, sliding plate 542, third spring 543, sliding protrusion 544. DETAILED DESCRIPTION

[0026] Embodiment one, as shown in Figures 1-6 .

[0027] A kind of gear flowmeter damping device, including gear flowmeter 1 and the damping device 5 of being set to the discharge end of gear flowmeter 1.

[0028] The gear flow meter 1 includes a flow meter body 101, within which a measuring chamber 102 is formed. Two meshing gears 103 are disposed within the measuring chamber 102, forming a standard volume between the gears 103 and the measuring chamber 102. Inlet and outlet ports are respectively opened on both sides of the flow meter body 101, directly opposite the meshing points of the two gears 103. The inlet port is connected to a feed pipe 2, and the outlet port is connected to a discharge pipe 3. The fluid medium enters the measuring chamber 102 through the feed pipe 2. Driven by differential pressure, the gears 103 rotate synchronously in opposite directions, achieving fluid volume displacement through the closed metering unit formed by the gear grooves and the measuring chamber 102, and then flowing out through the discharge pipe 3.

[0029] However, during use, especially with fluids containing particulate packing, the particulate medium can easily clog the meshing area of ​​the two gears 103. In severe cases, the gears 103 may jam, causing metering interruption. To further explain, the meshing area refers to the area where the two gears 103 approach and mesh. To address jamming, existing technologies typically require removing the cover plate of the flowmeter body 101 to fully expose the measuring chamber 102, then removing the particulate medium to restore the gear flowmeter 1 to its working state. Removing the cover plate is often cumbersome and time-consuming. Furthermore, the detection module is connected to the cover plate; repeated disassembly and reassembly make it difficult to ensure alignment between the signal detection components, leading to insufficient signal strength or missed detections, thus affecting metering accuracy.

[0030] Based on this, in this embodiment, a rectangular observation port 104 is provided on the bottom plate of the flowmeter body 101. The projection of the observation port 104 along the height direction can cover the meshing area between the two gears 103. A sealing plate is detachably connected to the observation port 104, and the two are connected by screws. The sealing plate seals the observation port 104 to prevent leakage. When particulate media needs to be removed from the meshing area, the sealing plate can be removed to view the location of the particulate media and remove it.

[0031] like Figures 3-5 As shown, the vibration damping device 5 includes a transition pipe 51 connected to the discharge pipe 3, which enables a flexible connection between the discharge pipe 3 and the main pipe. The transition pipe 51 includes connecting rings 511 at both ends, with multiple connecting holes evenly spaced along the circumferential direction on each connecting ring 511. An inner corrugated pipe 512 and an outer corrugated pipe 513 are provided between the two connecting rings 511, with a gap between the inner corrugated pipe 512 and the outer corrugated pipe 513. The flow channel of the inner corrugated pipe 512 is connected to the inner ring of the connecting ring 511. A first spring 514 is provided between the inner corrugated pipe 512 and the outer corrugated pipe 513. The first spring 514 is sleeved around the inner corrugated pipe 512, and its two ends are welded and fixed to the two connecting rings 511 respectively.

[0032] The connecting flange 4 is sleeved on the nozzle position of the exhaust pipe 3, and the transition pipe 51 is coupled to the exhaust pipe 3 through the connecting flange 4 and the connecting ring 511, and the connecting flange 4 and the connecting ring 511 constitute a coupling component. Specifically, the connecting hole on the connecting flange 4 is opposite to the connecting hole on the connecting ring 511, and the two are fixedly connected by a bolt.

[0033] The coupling position of the transition pipe 51 and the exhaust pipe 3 is provided with a circumferential damping unit 52. As shown in Figure 3 , the circumferential damping unit 52 includes a limiting ring 521 sleeved on the periphery of the coupling component, and a gap is left between the limiting ring 521 and the coupling component. In this embodiment, the thickness of the limiting ring 521 is equal to the sum of the thicknesses of the connecting ring 511 and the connecting flange 4. Four air bags 522 are uniformly spaced circumferentially between the limiting ring 521 and the coupling component, and the cross section of the air bag 522 is in the shape of a fan ring, the outer side surface of which is glued and fixed to the inner side surface of the limiting ring 521, and the inner side surface thereof is in contact with the coupling component. The vibration at the coupling component is buffered by the air bag 522 to reduce the swing amplitude. In addition, each air bag 522 is provided with an inflation port, and the air pressure of the air bag 522 is adaptively adjusted according to the fluid flow rate. Furthermore, the air bag 522 located below needs to bear the gravity of the coupling component and part of the transition pipe 51, so the air pressure of the air bag 522 located below needs to be increased to resist the gravity.

[0034] The impact force generated by the swing at the coupling position acts on the circumferential damping unit 52. According to the law of conservation of energy, the energy generated by the impact cannot disappear into thin air, so the circumferential damping unit 52 is also provided with an energy transmission structure for transmitting the impact energy to other fixed objects.

[0035] In this embodiment, the ground is taken as the fixed object, and the energy transmission structure includes a vertical damping unit 53 located below the circumferential damping unit 52. As shown in Figure 3 , Figure 6 , the vertical damping unit 53 includes a support plate 531 fixedly connected to the ground and a vertical support for supporting the circumferential damping unit 52, and the vertical support includes a fixed column 532 located on both sides of the limiting ring 521, and the bottom of the fixed column 532 is welded and fixed to the support plate 521. The top of the fixed column 532 is open and forms a vertical sliding groove, and a sliding column 533 is slidingly connected in the vertical sliding groove, and the top surface of the sliding column 533 is welded and fixed to the outer side surface of the limiting ring 521, and the bottom surface of the sliding column 533 is provided with a second spring 534 extending vertically between the groove bottom, so as to realize the elastic connection between the fixed column 532 and the sliding column 533.

[0036] By setting the vertical damping unit 53, on the one hand, the impact energy received by the circumferential damping unit 52 can be transmitted to other fixed objects (such as the ground), and on the other hand, the circumferential damping unit 52 and the coupling place are allowed to have vertical displacement to some extent, thereby further enhancing the buffering and damping effect in the vertical direction.

[0037] Embodiment two, as shown in Figures 7-8

[0038] The difference between the embodiment one is that, in this embodiment, the horizontal elastic limiting unit 54 is further provided on the basis of the vertical damping unit 53, as shown in Figure 8 The horizontal elastic limiting unit 54 includes a rectangular limiting groove 541 opened at the center position of the upper surface of the support plate 531, and a sliding plate 542 is slidably connected in the limiting groove 541. The bottom surface of the fixed column 532 is welded and fixed with the upper surface of the sliding plate 542. In this embodiment, the size of the plate surface of the sliding plate 542 is smaller than the opening size of the limiting groove 541, and the thickness of the sliding plate 542 is consistent with the depth of the limiting groove 541. In order to reduce the sliding friction resistance of the sliding plate 542, a plurality of hemispherical sliding protrusions 544 are welded on the groove bottom of the limiting groove 541. The sliding protrusions 544 are distributed in a matrix, and the bottom surface of the sliding plate 542 is in smooth contact with the sliding protrusions 544, thereby reducing the contact area of the sliding plate 542 and the limiting groove 541, and the sliding friction resistance is significantly reduced.

[0039] A plurality of third springs 543 are further provided around the sliding plate 542. One end of the third spring 543 is welded and fixed with the side surface of the sliding plate 542, and the other end of the third spring 543 is welded and fixed with the groove wall of the limiting groove 541. The sliding plate 542 and the support plate 531 are elastically connected under the action of the third spring 543.

[0040] By setting the horizontal elastic limiting unit 54, the pipeline coupling place and the circumferential damping unit 52 and the vertical damping unit 53 are allowed to have a certain degree of displacement in the horizontal direction, thereby further enhancing the buffering and damping effect in the horizontal direction.

[0041] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application.​

Claims

1. A gear flowmeter vibration reduction device, characterized by, The application relates to a gear flowmeter and a damping device arranged at the discharge end of the gear flowmeter, wherein the damping device comprises a transition pipe in communication with a discharge pipe of the gear flowmeter, the transition pipe is provided with connecting rings at two ends, the discharge pipe is provided with a connecting flange at a pipe opening position, the transition pipe and the discharge pipe are coupled and connected through the connecting flange and the connecting rings, the connecting flange and the connecting rings constitute coupling components, a circumferential damping unit is arranged at the coupling position of the transition pipe and the discharge pipe, the circumferential damping unit comprises a limiting ring sleeved outside the coupling components, a gap is left between the limiting ring and the coupling components, a plurality of air bags are uniformly arranged in the gap in the circumferential direction, and a vertical damping unit is further arranged below the circumferential damping unit.

2. The gear flow meter vibration reduction device of claim 1, wherein, The gap is uniformly provided with four air bags in the circumferential direction, the air bags are in the shape of a fan ring, the outer side surface of the air bags is fixed to the inner side surface of the limiting ring, the inner side surface of the air bags is in contact with the coupling components, each air bag is provided with an inflation port, and the air pressure of the air bags is adaptively adjusted according to the fluid flow rate.

3. The gear flow meter vibration reduction device of claim 2, wherein, The vertical damping unit comprises a support plate fixedly connected to the ground and a vertical support for supporting the circumferential damping unit, the vertical support comprises fixed columns located on both sides of the limiting ring, the bottom of the fixed column is fixedly connected to the support plate, the top of the fixed column is open and forms a vertical sliding groove, a sliding column is slidably connected in the vertical sliding groove, the top surface of the sliding column is fixedly connected to the outer side surface of the limiting ring, and a second spring vertically extending is arranged between the bottom surface of the sliding column and the groove bottom.

4. The gear flow meter vibration reduction device of claim 3, wherein, A horizontal elastic limiting unit is further arranged, the horizontal elastic limiting unit comprises a limiting groove arranged on the upper surface of the support plate, a sliding plate is slidably connected in the limiting groove, the bottom surface of the fixed column is fixedly connected to the upper surface of the sliding plate, a plurality of third springs are arranged around the sliding plate, and the sliding plate is elastically connected to the support plate under the action of the third springs.

5. The gear flow meter vibration reduction device of claim 4, wherein, The groove bottom of the limiting groove is provided with a plurality of hemispherical sliding protrusions which are arranged in a matrix, and the bottom surface of the sliding plate is in smooth contact with the sliding protrusions.

6. The gear flow meter vibration reduction device of claim 5, wherein, An observation port is arranged on the bottom plate of the flowmeter body, the projection of the observation port in the height direction can cover the meshing area between the two gears, and a sealing plate is detachably connected to the observation port.

7. The gear flow meter vibration reduction device of claim 6, wherein, An inner corrugated pipe and an outer corrugated pipe sleeved outside the inner corrugated pipe are arranged between the two connecting rings, a gap is left between the inner corrugated pipe and the outer corrugated pipe, a first spring is arranged between the inner corrugated pipe and the outer corrugated pipe, and the first spring is sleeved outside the inner corrugated pipe.

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