Air tightness detection device for precession flow meter

Abstract

The invention discloses an air tightness detection device for a precession flowmeter, and the device comprises a main body unit which comprises a detection frame and a bearing plate fixedly connected to the upper surface of the detection frame; the rotary sleeve rod is utilized to enable the vibrating diaphragm to block gas leaked from the screw-in flowmeter body, then the gas collides with one side of the vibrating diaphragm to enable the vibrating diaphragm to perform vibration treatment to a certain extent, and through a circular structure at one end of the rotary rod, the rotary rod is in contact with a clamping convex block on one side of the vibrating diaphragm, so that the rotating rod is in contact with the clamping convex block on the other side of the vibrating diaphragm to perform vibration treatment to a certain extent. According to the screw-in flow meter, the vibration of the vibration diaphragm is transmitted into the indication box through the rotating rod to a certain extent, the bearing frame is used for containing the insertion plate, and then after the screw-in flow meter body is clamped and carried, subsequent products can be rapidly placed and fed.

Description

Technical Field

[0001] The present invention relates to the technical field of air tightness detection device structures, and in particular to an air tightness detection device for a swirl flowmeter. Background Art

[0002] Since the vortex flowmeter has very high requirements for air tightness, it will be tested for air tightness after the production of the vortex flowmeter is completed. In the existing technology, when the vortex flowmeter is tested for air tightness, the inlet and outlet of the vortex flowmeter are usually sealed, and then the vortex flowmeter is placed in water. By observing whether there are bubbles at the interface of the vortex flowmeter, it is judged whether the air tightness of the vortex flowmeter is qualified.

[0003] Since the vortex flowmeter is not fixed and limited after being placed in water, it will fall downward under the action of gravity, which will make it impossible to detect extremely small leaks, resulting in inaccurate air tightness results after detection. In addition, the vortex flowmeter is directly placed in water for air tightness detection. This method takes a long time to detect the vortex flowmeter, which will reduce the detection efficiency of the vortex flowmeter. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] In view of the above problems existing in the existing air tightness detection device for the swirl flowmeter, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide an air tightness detection device for a vortex flowmeter, which is suitable for solving the problem of directly placing the vortex flowmeter into water for air tightness detection. This method takes a long time to detect the vortex flowmeter, which will reduce the detection efficiency of the vortex flowmeter.

[0007] To solve the above technical problems, the present invention provides the following technical solution: an air tightness detection device for a swirl flowmeter, the air tightness detection device comprising:

[0008] The main unit includes a detection frame and a load-bearing plate fixedly connected to the upper surface of the detection frame, a connecting plate fixedly connected to the upper surface of the load-bearing plate, and inclined support plates fixedly connected to both sides of the detection frame;

[0009] A clamping and placing unit, comprising a T-shaped block slidably connected to the inside of a connecting plate and a guide rod fixedly connected to the inner surface of the connecting plate, wherein the outer surface of the guide rod is slidably connected to the inside of the T-shaped block, a first screw rod is internally threadedly connected to the T-shaped block, one end of the first screw rod is fixedly connected to one end of an output shaft of a drive motor, and the drive motor is fixedly connected to one side of the load-bearing plate through a machine base;

[0010] The detection amplification unit includes multiple groups of symmetrically distributed sliding grooves on the inner surface of the detection frame and movable grooves opened on the upper sides of the detection frame. A fixed shaft is fixedly connected to the detection frame, and a rotating sleeve rod is rotatably connected to the outer surface of the fixed shaft. A vibration diaphragm is fixedly connected to one side of the rotating sleeve rod, and a placement plate is fixedly connected to the side of the vibration diaphragm away from the rotating sleeve rod, and the placement plate and the rotating sleeve rod jointly wrap the vibration diaphragm.

[0011] As a preferred solution of the air tightness detection device for a swirl flowmeter described in the present invention, wherein: a discharge pipe and a liquid inlet pipe are fixedly connected to one side of the detection frame, respectively, and placement grooves are provided on the inner surfaces of both sides of the detection frame, and a third sealing plate is fixedly connected to the side of the placement groove close to the interior of the detection frame.

[0012] As a preferred solution of the air tightness detection device for a swirl flowmeter described in the present invention, wherein: the lower surface of the T-shaped block is fixedly connected to a clamping plate, the lower surface of the clamping plate is fixedly connected to a first electric push rod, one end of the first electric push rod is internally clamped and connected to an adjusting motor, one end of the adjusting motor output shaft is fixedly connected to a gear, and the outer surface of the gear is meshed and connected to a toothed plate.

[0013] As a preferred solution of the air tightness detection device for a vortex flowmeter described in the present invention, wherein: one end of the first electric push rod is fixedly connected to a supporting frame through a connecting block, a contact block is fixedly connected to the upper surface of the supporting frame, the supporting frame is hollowed out, a tooth plate is slidably connected to the supporting frame, one side of the tooth plate is fixedly connected to a clamping plate, one side of the clamping plate is fixedly connected to multiple groups of clamping cones distributed in a circle, one side of one group of clamping plates is penetrated by an air inlet pipe, and the side of the clamping plate away from the air pipe is fixedly connected to a sleeve pipe.

[0014] As a preferred solution of the air tightness detection device for a swirl flowmeter described in the present invention, wherein: the detection frame and the upper surface of the inclined support plate are commonly fixedly connected to a load-bearing frame, the upper surface of the load-bearing frame is slidably connected to an insert plate, the upper surface of the insert plate is fixedly connected to a fixed plate, the swirl flowmeter body is placed on the fixed plate, a micro motor is fixedly connected inside the load-bearing frame, the output shaft of the micro motor is fixedly connected to an adjusting rod, the outer surface of the adjusting rod is threadedly connected to a pulling block, and one side of the pulling block is connected to one side of the fixed plate.

[0015] As a preferred solution of the air tightness detection device for a swirl flowmeter described in the present invention, wherein: a toggle groove is opened on the lower surface of the load-bearing plate, one side of the swirl flowmeter body is fixedly connected to a first sealing plate by a screw, and the side of the swirl flowmeter body away from the first sealing plate is fixedly connected to a second sealing plate, one side of the second sealing plate passes through a connecting pipe, and the outer diameter of the connecting pipe is adapted to the inner diameter of the sleeve pipe.

[0016] As a preferred solution of the air tightness detection device for a vortex flowmeter described in the present invention, wherein: a second electric push rod is fixedly connected in the placement groove, one end of the telescopic shaft of the second electric push rod contacts the conduction rod, a sliding block is slidably connected in the sliding groove, and a shaft sleeve is fixedly connected to one side of the sliding block.

[0017] As a preferred solution of the air tightness detection device for a vortex flowmeter described in the present invention, wherein: a rotating rod is rotatably connected inside the sleeve, a clamping rod is fixedly connected to the end of the rotating rod away from the sleeve, one side of the clamping rod is fixedly connected to the outer wrapping position of the vibrating diaphragm, and one side of the vibrating diaphragm is fixedly connected to a snap-fit protrusion.

[0018] As a preferred solution of the air tightness detection device for a swirl flowmeter described in the present invention, wherein: the inner wall of the detection frame is rotatably connected to a rotating rod through a connecting frame, one side of the load-bearing plate is fixedly connected to an indicator box, a toggle block is rotatably connected in the indicator box, and the lower surface of the toggle block is a tooth-shaped structure, and a connecting frame is slidably connected in the movable groove.

[0019] As a preferred solution of the air tightness detection device for a vortex flowmeter described in the present invention, wherein: a transmission plate is rotatably connected in the indicator box, the upper surface of the transmission plate is a toothed structure, and the upper surface of the transmission plate and the lower surface of the toggle block are engaged with each other, one side of the transmission plate is fixedly connected to a force block, the upper surface of the rotating rod is an inclined structure, the upper surface of the toggle block is fixedly connected to a pointer, and one side of the indicator box is fixedly connected to a transparent plate, and the surface of the transparent plate is provided with scale lines.

[0020] Beneficial effects of the present invention:

[0021] 1. Use the first electric push rod, the clamping plate, the T-shaped block, the adjusting motor, the contact block, the tooth plate, the connecting block, the clamping plate, the sleeve tube, the clamping cone and the gear to make the T-shaped block slide in the connecting plate. Further use the first electric push rod to adjust the height of the carrying frame. The adjusting motor drives the gear through the output shaft, so that the gear and the tooth plate cooperate with each other. Then, the tooth plate drives the clamping plate to move closer to the center, so that the clamping plate clamps and installs the first sealing plate and the second sealing plate installed on both sides of the rotating flowmeter body through the clamping cone.

[0022] 2. Use the load-bearing frame, adjustment motor, adjustment rod, insert plate, first sealing plate, fixed plate, insert plate, micro motor and second sealing plate to make the load-bearing frame hold the insert plate, and then after clamping and transporting the rotary flowmeter body, the subsequent products can be quickly placed and loaded;

[0023] 3. Utilize the rotating sleeve, vibrating diaphragm, placement plate, rotating rod, connecting frame, sliding block, shaft sleeve and rotating rod to make the vibrating diaphragm block the gas leaking from the swirling flowmeter body, and then make the vibrating diaphragm vibrate to a certain extent through the collision between the gas and one side of the vibrating diaphragm, and make the rotating rod contact with the engaging protrusion on one side of the vibrating diaphragm through the circular structure at one end of the rotating rod, so that the vibration of the vibrating diaphragm is transmitted to the indicator box through the rotating rod to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0025] Figure 1 This is a schematic diagram of the overall structure of an air tightness detection device for a swirl flowmeter proposed by the present invention;

[0026] Figure 2 This is a schematic diagram of the overall cross-sectional structure of an air tightness detection device for a swirl flowmeter proposed by the present invention;

[0027] Figure 3 This is a schematic diagram of the distribution structure of a load-bearing frame for an air tightness detection device for a swirl flowmeter proposed by the present invention;

[0028] Figure 4 This is a structural schematic diagram of a detection amplification unit of an air tightness detection device for a swirl flowmeter proposed by the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of a vibrating diaphragm for an air tightness detection device for a swirl flowmeter proposed by the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of a vibrating diaphragm for an air tightness detection device for a swirl flowmeter proposed by the present invention;

[0031] Figure 7 This is a schematic diagram of the tooth plate structure of an air tightness detection device for a swirl flowmeter proposed by the present invention;

[0032] Figure 8 A schematic diagram of the structure of a swirl flowmeter body of an air tightness detection device for a swirl flowmeter proposed by the present invention;

[0033] Figure 9 This is a schematic diagram of the internal structure of a detection frame of an air tightness detection device for a swirl flowmeter proposed by the present invention.

[0034] Description of the drawings: 100, main unit; 101, detection frame; 102, tilt support plate; 103, load-bearing plate; 104, drive motor; 105, connecting plate; 106, swirl flowmeter body; 200, clamping and placing unit; 201, first electric push rod; 202, first screw rod; 203, locking plate; 204, adjusting rod; 205, load-bearing frame; 206, T-shaped block; 207, guide rod; 208, adjusting motor; 209, toggle slot; 210, carrying frame; 211, contact block; 212, first sealing plate; 213, fixing plate; 214, inserting plate; 215, tooth plate; 216, connecting block; 217, clamping plate; 218 , second sealing plate; 219, sleeve tube; 220, clamping cone; 221, gear; 222, micro motor; 300, detection and amplification unit; 301, sliding groove; 302, rotating sleeve rod; 303, vibration diaphragm; 304, placement plate; 305, second electric push rod; 306, conduction rod; 307, engaging protrusion; 308, rotating rod; 309, connecting frame; 310, sliding block; 311, shaft sleeve; 312, rotating rod; 313, clamping rod; 314, moving groove; 315, third sealing plate; 316, force block; 317, transmission plate; 318, toggle block; 319, pointer; 320, transparent plate; 321, indicator box. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it individually or selectively refer to an embodiment that is mutually exclusive of other embodiments.

[0038] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0039] Example 1:

[0040] Reference Figure 1 - Figure 9 , which is an embodiment of the present invention, provides an air tightness detection device for a swirl flowmeter, including a main unit 100, a buffer conduction unit 200 and a steering adjustment unit 300.

[0041] The main unit 100 includes a detection frame 101 and a load-bearing plate 103 fixedly connected to the upper surface of the detection frame 101. The upper surface of the load-bearing plate 103 is fixedly connected to a connecting plate 105. Both sides of the detection frame 101 are fixedly connected to inclined support plates 102.

[0042] The clamping and placing unit 200 includes a T-shaped block 206 slidably connected to the interior of the connecting plate 105 and a guide rod 207 fixedly connected to the inner surface of the connecting plate 105. The outer surface of the guide rod 207 is slidably connected to the interior of the T-shaped block 206. The T-shaped block 206 is internally threaded with a first screw rod 202. One end of the first screw rod 202 is fixedly connected to one end of the output shaft of the drive motor 104. The drive motor 104 is fixedly connected to one side of the load-bearing plate 103 through a machine base.

[0043] Finally, the detection amplification unit 300 includes multiple groups of symmetrically distributed sliding grooves 301 on the inner surface of the detection frame 101 and movable grooves 314 opened on the upper sides of the detection frame 101. A fixed shaft is fixedly connected inside the detection frame 101, and a rotating sleeve 302 is rotatably connected to the outer surface of the fixed shaft. A vibration diaphragm 303 is fixedly connected to one side of the rotating sleeve 302, and a placement plate 304 is fixedly connected to the side of the vibration diaphragm 303 away from the rotating sleeve 302, and the placement plate 304 and the rotating sleeve 302 jointly wrap the vibration diaphragm 303.

[0044] Furthermore, a liquid discharge pipe and a liquid inlet pipe are fixedly connected to one side of the detection frame 101, and placement grooves are provided on the inner surfaces of both sides of the detection frame 101, and a third sealing plate 315 is fixedly connected to the placement groove close to the inner side of the detection frame 101, wherein the liquid is injected into the interior of the detection frame 101 through the liquid inlet pipe and the liquid discharge pipe, and a telescopic axis of the second electric push rod 305 passes through one side of the third sealing plate 315. Furthermore, inclined sliding grooves are provided on both sides of the placement groove, so that the connecting frame 309 can slide the rotating rod 308 up and down according to the inclined sliding grooves.

[0045] Furthermore, the lower surface of the T-shaped block 206 is fixedly connected to a clamping plate 203, and the lower surface of the clamping plate 203 is fixedly connected to a first electric push rod 201. An adjusting motor 208 is clamped and connected to one end of the first electric push rod 201. A gear 221 is fixedly connected to one end of the output shaft of the adjusting motor 208. The outer surface of the gear 221 is meshed and connected to a toothed plate 215, wherein the gear 221 is driven by the output shaft of the adjusting motor 208, and then the clamping plates 217 on both sides are moved closer to the middle or separated to both sides through the gear 221.

[0046] Furthermore, one end of the first electric push rod 201 is fixedly connected to the supporting frame 210 through a connecting block 216, and a contact block 211 is fixedly connected to the upper surface of the supporting frame 210. The supporting frame 210 is hollow in design, and a tooth plate 215 is slidably connected to the supporting frame 210. One side of the tooth plate 215 is fixedly connected to a clamping plate 217, and one side of the clamping plate 217 is fixedly connected to multiple groups of clamping cones 220 distributed in a circumference, one side of one group of clamping plates 217 is connected to an air intake pipe, and the side of the clamping plate 217 away from the air pipe is fixedly connected to a sleeve pipe 219, wherein the air intake pipe is used to maintain the gas capacity inside the swirl flowmeter body 106, and further, the connection method of the sleeve pipe 219 and the air pipe is utilized to improve the sealing effect of the air intake position of the equipment to a certain extent.

[0047] Furthermore, the upper surfaces of the detection frame 101 and the inclined support plate 102 are commonly fixedly connected to a load-bearing frame 205, the upper surface of the load-bearing frame 205 is slidably connected to an insertion plate 214, the upper surface of the insertion plate 214 is fixedly connected to a fixed plate 213, and the fixed plate 213 is placed with a swirl-in flowmeter body 106, and a micro motor 222 is fixedly connected inside the load-bearing frame 205, and the output shaft of the micro motor 222 is fixedly connected to the adjusting rod 204, and the outer surface of the adjusting rod 204 is threadedly connected to a pulling block, and one side of the pulling block is connected to one side of the fixed plate 213, wherein, through the cooperation between the micro motor 222 and the pulling block, the swirl-in flowmeter body 106 on the upper surface of the fixed plate 213 is clamped and transported, and the subsequent swirl-in flowmeter body 106 can be quickly loaded and processed.

[0048] Furthermore, a toggle groove 209 is provided on the lower surface of the load-bearing plate 103, and a first sealing plate 212 is fixedly connected to one side of the swirl flowmeter body 106 by a screw, and a second sealing plate 218 is fixedly connected to the side of the swirl flowmeter body 106 away from the first sealing plate 212. A connecting pipe is passed through one side of the second sealing plate 218, and the outer diameter of the connecting pipe is adapted to the inner diameter of the sleeve pipe 219. Among them, through the design of the first sealing plate 212 and the second sealing plate 218 on both sides, the injected gas can only remain inside the swirl flowmeter body 106, so that it can only be discharged through areas with poor air tightness.

[0049] Working principle: The T-shaped block 206 is slid in the connecting plate 105 by using the first electric push rod 201, the engaging plate 203, the T-shaped block 206, the adjusting motor 208, the contact block 211, the tooth plate 215, the connecting block 216, the clamping plate 217, the sleeve 219, the clamping cone 220 and the gear 221. The first electric push rod 201 is further used to adjust the height of the carrying frame 210. The adjusting motor 208 drives the gear 221 through the output shaft, so that the gear 221 and the tooth plate 215 cooperate with each other, and then the tooth plate 215 drives the clamping plate 217 to move closer to the center, so that the clamping plate 217 clamps and installs the first sealing plate 212 and the second sealing plate 218 installed on both sides of the rotating flowmeter body 106 through the clamping cone 220.

[0050] The load-bearing frame 205, the adjusting motor 208, the adjusting rod 204, the inserting plate 214, the first sealing plate 212, the fixing plate 213, the inserting plate 214, the micro motor 222 and the second sealing plate 218 are used to enable the load-bearing frame 205 to hold the inserting plate 214, and then after the rotary flowmeter body 106 is clamped and transported, subsequent products can be quickly placed and loaded;

[0051] By utilizing the rotating sleeve 302, vibrating diaphragm 303, placement plate 304, rotating rod 308, connecting frame 309, sliding block 310, shaft sleeve 311 and rotating rod 312, the vibrating diaphragm 303 is used to block the gas leaked from the swirling flowmeter body 106, and then the gas collides with one side of the vibrating diaphragm 303, so that the vibrating diaphragm 303 is vibrated to a certain extent, and the circular structure at one end of the rotating rod 308 makes the rotating rod 308 contact with the engaging protrusion 307 on one side of the vibrating diaphragm 303, so that the vibration of the vibrating diaphragm 303 is transmitted to the indicator box 321 through the rotating rod 308 to a certain extent.

[0052] Example 2:

[0053] Reference Figure 2 - Figure 6 and Figure 9 , the difference compared with the first embodiment is that: a second electric push rod 305 is fixedly connected in the placement groove, one end of the telescopic shaft of the second electric push rod 305 contacts the conductive rod 306, a sliding block 310 is slidably connected in the sliding groove 301, and a shaft sleeve 311 is fixedly connected to one side of the sliding block 310, wherein, the sliding block 310 and the sliding groove 301 are matched with each other, so that the vibrating diaphragm 303 can be flipped, so that the supporting frame 210 can fully cover it when clamping and lifting.

[0054] Furthermore, a rotating rod 312 is rotatably connected inside the sleeve 311, and a clamping rod 313 is fixedly connected to one end of the rotating rod 312 away from the sleeve 311. One side of the clamping rod 313 is fixedly connected to the outer wrapping position of the vibration diaphragm 303, and one side of the vibration diaphragm 303 is fixedly connected to a locking protrusion 307, wherein the bubbles generated by the leaked gas are vibrated by the vibration diaphragm 303, and the airtightness state of the swirl flowmeter body 106 is reflected by the vibration amplitude of the vibration diaphragm 303.

[0055] Furthermore, the inner wall of the detection frame 101 is rotatably connected to a rotating rod 308 through a connecting frame 309, and an indicator box 321 is fixedly connected to one side of the load-bearing plate 103. A toggle block 318 is rotatably connected in the indicator box 321, and the lower surface of the toggle block 318 is a tooth-like structure, and a connecting frame 309 is slidably connected in the movable groove 314, wherein the rotating rod 308 and the engaging protrusion 307 on one side of the vibration diaphragm 303 are engaged with each other, thereby transmitting the vibration amplitude of the vibration diaphragm 303 to the side of the rotating rod 308, so that the equipment amplifies the airtightness to a certain extent.

[0056] The cam 318 is rotated to move the lever 314 so that the push rod 316 is engaged with the push rod 318, and the push rod 314 is rotated to move the lever 314 so that the push rod 314 is engaged with the push rod 318.

[0057] Working principle: First, the first screw rod 202 is driven to rotate by the driving motor 104, driving the T-shaped block 206 to slide horizontally along the guide rod 207. When the clamping and placing unit 200 moves to the predetermined position, the first electric push rod 201 drives the carrying frame 210 to rise and fall vertically, so that the clamping cone 220 is precisely connected to the first sealing plate 212 and the second sealing plate 218 on both sides of the flowmeter body 106. At this time, the adjustment motor 208 drives the gear 221 to engage with the tooth plate 215 to achieve synchronous opposite movement of the clamping plates 217 on both sides. The circumferentially distributed clamping cones 220 form a multi-point contact fixation to ensure that the measured object remains absolutely stationary in the liquid.

[0058] Secondly, during the clamping process, the inclined support plates 102 on both sides of the test frame 101 and the load-bearing plate 103 form a triangular stable structure. When the clamping cone 220 contacts the test piece, the sleeve tube 219 and the connecting tube form a double sealed connection, and cooperate with the first sealing plate 212 and the second sealing plate 218 to form a closed air chamber. At this time, the air inlet pipe continuously injects test gas. If there is a micron-level leak, the gas will enter the liquid environment through the leak point. The rigid clamping structure can completely eliminate the detection error caused by the displacement of the test piece.

[0059] Secondly, the bubble flow formed by the leaking gas in the liquid impacts the vibrating diaphragm 303, and the vibration of the vibrating diaphragm 303 is transmitted to the rotating rod 308 through the engaging protrusion 307, and the amplitude is amplified by 5-8 times through the lever mechanism in the connecting frame 309. The inclined surface at the end of the rotating rod 308 forms a sliding contact with the force block 316, converting the linear vibration into the angular displacement of the rotating rod 312. The rotation of the rotating rod 312 drives the transmission plate 317 to swing back and forth through the shaft sleeve 311, and its toothed surface and the toggle block 318 form a ratchet transmission, so that the deflection angle of the pointer 319 is indirectly represented as the air tightness of the flow meter. The photoelectric encoder in the indicator box 321 records the swing frequency and amplitude of the pointer 319 in real time, and the leakage amount is monitored through the scale line of the transparent plate 320. At this time, when the internal pressure of the swirling flowmeter remains constant, the pointer 319 can be properly observed. Observe the swing amplitude of pointer 319 or the amount of bubbles generated in the liquid. If the amount of bubbles generated is small or no bubbles are generated, and pointer 319 swings slightly or stops moving, continue to fill the swirling flowmeter with gas to increase the internal pressure of the product, and observe the swing amplitude of pointer 319 or the amount of bubbles. If pointer 319 remains stationary or the amount of bubbles is small, it means that the product quality is qualified, but there are certain problems with the air tightness of the pipeline connection. When the internal pressure of the swirling flowmeter remains constant, observe the swing amplitude of pointer 319 or observe the amount of bubbles generated in the liquid. If the amount of bubbles generated is large and pointer 319 swings, and continue to fill the swirling flowmeter with gas, if the gas remains unchanged, it indicates that the leakage is small. If a large amount of gas leaks, it means that the leakage port is large, and the swing amplitude of pointer 319 is large, it means that the product leakage point is large and there is an obvious defect.

[0060] Finally, the micro motor 222 in the load-bearing frame 205 drives the adjustment rod 204 to rotate, driving the fixed plate 213 to realize automatic loading and unloading of the test piece. When the current test is completed, the second electric push rod 305 pushes the conduction rod 306 to trigger the shifting mechanism, so that the sliding block 310 moves along the inclined slide groove, driving the vibrating diaphragm 303 to flip 60° out of the test position, preparing for the next test cycle. During the test process, the test liquid is injected into the liquid inlet pipe, and the nano-scale rough structure set on the surface of the vibrating diaphragm 303 is used to concentrate the bubble rupture energy on the central detection area of the diaphragm.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An air tightness detection device for a swirl flowmeter, characterized in that: The airtightness detection device comprises: A main unit (100) comprises a detection frame (101) and a load-bearing plate (103) fixedly connected to the upper surface of the detection frame (101); a connecting plate (105) is fixedly connected to the upper surface of the load-bearing plate (103); and inclined support plates (102) are fixedly connected to both sides of the detection frame (101); A clamping and placing unit (200) comprises a T-shaped block (206) slidably connected to the interior of a connecting plate (105) and a guide rod (207) fixedly connected to the inner surface of the connecting plate (105); the outer surface of the guide rod (207) is slidably connected to the interior of the T-shaped block (206); a first screw rod (202) is connected to the inner thread of the T-shaped block (206); one end of the first screw rod (202) is fixedly connected to one end of an output shaft of a driving motor (104); and the driving motor (104) is fixedly connected to one side of a load-bearing plate (103) via a machine base; The detection amplification unit (300) comprises a plurality of symmetrically distributed sliding grooves (301) on the inner surface of a detection frame (101) and movable grooves (314) provided on the upper sides of both sides of the detection frame (101); a fixed shaft is fixedly connected in the detection frame (101), and a rotating sleeve (302) is rotatably connected to the outer surface of the fixed shaft; a vibration diaphragm (303) is fixedly connected to one side of the rotating sleeve (302); a placement plate (304) is fixedly connected to the side of the vibration diaphragm (303) away from the rotating sleeve (302); and the placement plate (304) and the rotating sleeve (302) jointly wrap the vibration diaphragm (303).

2. The air tightness detection device for a swirl flowmeter according to claim 1, characterized in that: A liquid discharge pipe and a liquid inlet pipe are fixedly connected to one side of the detection frame (101), and placement grooves are provided on the inner surfaces of both sides of the detection frame (101), and a third sealing plate (315) is fixedly connected to one side of the placement groove close to the interior of the detection frame (101).

3. The air tightness detection device for a swirl flowmeter according to claim 1, characterized in that: The lower surface of the T-shaped block (206) is fixedly connected to a clamping plate (203), the lower surface of the clamping plate (203) is fixedly connected to a first electric push rod (201), one end of the first electric push rod (201) is internally clamped and connected to an adjustment motor (208), one end of the output shaft of the adjustment motor (208) is fixedly connected to a gear (221), and the outer surface of the gear (221) is meshed and connected to a toothed plate (215).

4. The air tightness detection device for a swirl flowmeter according to claim 3, characterized in that: One end of the first electric push rod (201) is fixedly connected to a supporting frame (210) through a connecting block (216); a contact block (211) is fixedly connected to the upper surface of the supporting frame (210); the interior of the supporting frame (210) is hollowed out; a tooth plate (215) is slidably connected to the interior of the supporting frame (210); one side of the tooth plate (215) is fixedly connected to a clamping plate (217); one side of the clamping plate (217) is fixedly connected to a plurality of groups of clamping cones (220) distributed circumferentially; one side of one group of the clamping plates (217) is penetrated by an air inlet pipe, and the side of the clamping plate (217) away from the air pipe is fixedly connected to a sleeve pipe (219).

5. The air tightness detection device for a swirl flowmeter according to claim 1, characterized in that: The upper surfaces of the detection frame (101) and the inclined support plate (102) are fixedly connected to a load-bearing frame (205); the upper surface of the load-bearing frame (205) is slidably connected to an insertion plate (214); the upper surface of the insertion plate (214) is fixedly connected to a fixing plate (213); a swirl flowmeter body (106) is placed on the fixing plate (213); a micro motor (222) is fixedly connected inside the load-bearing frame (205); the output shaft of the micro motor (222) is fixedly connected to an adjusting rod (204); the outer surface of the adjusting rod (204) is threadedly connected to a pulling block, and one side of the pulling block is connected to one side of the fixing plate (213).

6. The air tightness detection device for a swirl flowmeter according to claim 5, characterized in that: A toggle groove (209) is provided on the lower surface of the load-bearing plate (103); one side of the swirl flowmeter body (106) is fixedly connected to a first sealing plate (212) via a screw; a side of the swirl flowmeter body (106) away from the first sealing plate (212) is fixedly connected to a second sealing plate (218); a connecting pipe is passed through one side of the second sealing plate (218), and the outer diameter of the connecting pipe is adapted to the inner diameter of the sleeve pipe (219).

7. The air tightness detection device for a swirl flowmeter according to claim 1, characterized in that: A second electric push rod (305) is fixedly connected in the placement groove, and one end of the telescopic shaft of the second electric push rod (305) contacts a conductive rod (306). A sliding block (310) is slidably connected in the sliding groove (301), and a shaft sleeve (311) is fixedly connected to one side of the sliding block (310).

8. The air tightness detection device for a swirl flowmeter according to claim 7, characterized in that: A rotating rod (312) is rotatably connected inside the shaft sleeve (311), and one end of the rotating rod (312) away from the shaft sleeve (311) is fixedly connected to a clamping rod (313), one side of the clamping rod (313) is fixedly connected to a position surrounding the vibrating diaphragm (303), and one side of the vibrating diaphragm (303) is fixedly connected to a locking protrusion (307).

9. The air tightness detection device for a swirl flowmeter according to claim 8, characterized in that: The inner wall of the detection frame (101) is rotatably connected to a rotating rod (308) via a connecting frame (309); one side of the load-bearing plate (103) is fixedly connected to an indicator box (321); a toggle block (318) is rotatably connected in the indicator box (321); and the lower surface of the toggle block (318) is a tooth-shaped structure; and the connecting frame (309) is slidably connected in the movable groove (314).

10. The air tightness detection device for a swirl flowmeter according to claim 9, characterized in that: The indicator box (321) is rotatably connected to a transmission plate (317). The upper surface of the transmission plate (317) is a toothed structure, and the upper surface of the transmission plate (317) and the lower surface of the toggle block (318) are engaged with each other. One side of the transmission plate (317) is fixedly connected to a force block (316). The upper surface of the rotating rod (308) is an inclined structure. The upper surface of the toggle block (318) is fixedly connected to a pointer (319). One side of the indicator box (321) is fixedly connected to a transparent plate (320), and a scale line is provided on the surface of the transparent plate (320).

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