Gas ultrasonic flowmeter

Abstract

The utility model relates to the field of gas ultrasonic flow meters, and discloses a gas ultrasonic flow meter which comprises a flow meter body, a connecting pipe is detachably arranged on the left side of the flow meter body, an assembling and disassembling assembly is arranged on the connecting pipe, a buffering assembly is arranged on the flow meter body, and the buffering assembly comprises a buffering plate. The back face of the buffer plate is elastically connected with the front face of the flowmeter body through a spring, a sleeve is fixedly connected to the right side of the top end of the front face of the flowmeter body, a cylindrical rod is elastically connected to the inner wall of the sleeve through a reset spring, a hinge rod is hinged to the left end of the cylindrical rod, and a damping sleeve is arranged on the inner wall of the sleeve. According to the flow meter, the buffering assembly is arranged, the vibration load is transmitted to the spring and the hinge rod through the buffering plate, the vibration load borne by the flow meter body is reduced through the spring, the reset spring and the damping sleeve, and therefore the measurement accuracy of the flow meter is improved.

Description

Technical Field

[0001] The utility model relates to the field of gas ultrasonic flowmeters, in particular to a gas ultrasonic flowmeter. Background Art

[0002] A gas ultrasonic flow meter is an instrument that uses the ultrasonic principle to measure gas flow. It is usually composed of components such as an ultrasonic sensor, a transmitter, a receiver, a signal processing unit and a display. Its working principle is based on the phenomenon that ultrasonic waves are affected by flow velocity when propagating in a fluid.

[0003] After searching, Chinese patent announcement number: CN217111022U discloses a gas ultrasonic flow meter, which provides a filtering and ultrasonic function to the flow meter by setting an ultrasonic transducer and a filter, and provides a self-cleaning function by setting a scraper strip, a sealing strip, a threaded rod, a micro electric push rod, a flow sensor, and a drive device. The gas ultrasonic flow meter has a filtering and rectifying ultrasonic function, a self-cleaning function, and uses a concealed cable.

[0004] However, considering that the existing flow meter has poor buffering effect when in use, when the external environment vibrates, it is easy for the flow meter to change or vibrate, thereby affecting the propagation path and reception quality of the ultrasonic signal, resulting in a decrease in the accuracy of the measurement results of the flow meter. Therefore, a gas ultrasonic flow meter is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a gas ultrasonic flow meter, which aims to improve the problem in the prior art that when the flow meter changes or vibrates, the accuracy of the measurement result of the flow meter is easily reduced.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gas ultrasonic flow meter, comprising a flow meter body, a connecting pipe can be installed and removed on the left side of the flow meter body, an installation and disassembly component is provided on the connecting pipe, and a buffer component is provided on the flow meter body;

[0007] The buffer assembly includes a buffer plate, the back side of which is elastically connected to the front side of the flowmeter body through a spring, a sleeve is fixedly connected to the right side of the top end of the front side of the flowmeter body, the inner wall of the sleeve is elastically connected to a cylindrical rod through a reset spring, the left end of the cylindrical rod is hinged with a hinged rod, and a damping sleeve is provided on the inner wall of the sleeve.

[0008] As a further description of the above technical solution:

[0009] The assembly and disassembly component comprises a ferrule, a ferrule is inserted into the inner wall of the ferrule, a wedge is elastically connected to the inner wall of the ferrule via a limit spring, a sealing gasket is arranged on the inner wall of the ferrule, and a groove is opened on the outer wall of the ferrule.

[0010] As a further description of the above technical solution:

[0011] The top of the front side of the flow meter body is fixedly connected with a guide rod, and the top of the back side of the buffer plate is hinged to the left end of the hinge rod.

[0012] As a further description of the above technical solution:

[0013] One end of the return spring is fixedly connected to the inner wall of the sleeve, and the other end of the return spring is fixedly connected to the right end of the cylindrical rod.

[0014] As a further description of the above technical solution:

[0015] One end of the spring is fixedly connected to the front side of the flow meter body, and the other end of the spring is fixedly connected to the back side of the buffer plate.

[0016] As a further description of the above technical solution:

[0017] The top inner wall of the buffer plate is slidably connected to the outer periphery of the guide rod, and the outer periphery of the cylindrical rod is slidably connected to the inner wall of the sleeve.

[0018] As a further description of the above technical solution:

[0019] The right side of the ferrule is fixedly connected to the left side of the flowmeter body, and the left side of the clamping ring is fixedly connected to the right side of the connecting pipe.

[0020] As a further description of the above technical solution:

[0021] One end of the limit spring is fixedly connected to the inner wall of the clamping ring, and the other end of the limit spring is fixedly connected to the outer wall of the wedge block. The outer wall of the wedge block is slidably connected to the inner wall of the clamping ring, and the outer wall of the wedge block is clamped with the inner wall of the clamping groove.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, a buffer assembly is provided. When vibration occurs in the external environment, the vibration load is transmitted to the spring and the hinged rod through the buffer plate. A part of the vibration load is reduced by the elastic force of the spring. At the same time, the hinged rod drives the cylindrical rod to squeeze the reset spring and the damping sleeve. The reset spring and the damping sleeve further reduce the vibration load on the flow meter body, thereby improving the measurement accuracy of the flow meter.

[0024] 2. In the utility model, an assembly and disassembly assembly is provided, and the clamping effect of the wedge block and the clamping groove makes the flow meter easy to install or disassemble. At the same time, the sealing gasket is squeezed by the clamping ring and the clamping sleeve, so that the sealing gasket seals the gap between the clamping ring and the clamping sleeve, thereby improving the working efficiency and sealing effect of the flow meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall main structure of a gas ultrasonic flow meter proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the disassembly structure of the assembly and disassembly components of a gas ultrasonic flow meter proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the main structure of a buffer plate of a gas ultrasonic flowmeter proposed by the utility model;

[0028] Figure 4 The utility model is a schematic diagram of a sleeve cross-sectional structure of a gas ultrasonic flow meter.

[0029] Legend:

[0030] 1. Flow meter body; 2. Connecting pipe; 3. Buffer assembly; 31. Buffer plate; 32. Spring; 33. Sleeve; 34. Cylindrical rod; 35. Guide rod; 36. Return spring; 37. Damping sleeve; 38. Articulated rod; 4. Assembly and disassembly assembly; 41. Clamping sleeve; 42. Sealing gasket; 43. Snap ring; 44. Slot; 45. Limit spring; 46. Wedge. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1The utility model provides an embodiment: a gas ultrasonic flowmeter, including a flowmeter body 1, a connecting pipe 2 can be installed and detached on the left side of the flowmeter body 1, the gas is transported to the flowmeter body 1 through the connecting pipe 2, and the gas is measured, a mounting and disassembly component 4 is provided on the connecting pipe 2, the mounting and disassembly component 4 is used to facilitate the installation or disassembly of the flowmeter body 1, and at the same time improve the sealing effect of the flowmeter body 1, a buffer component 3 is provided on the flowmeter body 1, and the buffer component 3 is symmetrically distributed in two groups, and the vibration of the flowmeter body 1 is reduced through the buffer component 3, thereby improving the measurement accuracy of the flowmeter body 1.

[0033] Reference Figure 2-Figure 4 The buffer assembly 3 includes a buffer plate 31, which is arc-shaped. The vibration load is transmitted to the spring 32 and the hinge rod 38 through the buffer plate 31. The back of the buffer plate 31 is elastically connected to the front of the flow meter body 1 through the spring 32. The spring 32 is provided with multiple groups. Through the elastic force of the spring 32, a part of the vibration load on the flow meter body 1 is reduced. A sleeve 33 is fixedly connected to the right side of the top of the front of the flow meter body 1. The sleeve 33 is distributed in four groups in an array. Through the fixing effect of the sleeve 33, the sleeve 33 is prevented from coming off. The inner wall of the sleeve 33 is elastically connected to the cylindrical rod 34 through a return spring 36. The elastic force of the return spring 36 further reduces the vibration load transmitted to the cylindrical rod 34. The left end of the cylindrical rod 34 is hinged with a hinged rod 38. The movement of the hinged rod 38 drives the cylindrical rod 34 to slide along the inner wall of the sleeve 33, and the vibration load is transmitted to the cylindrical rod 34. The inner wall of the sleeve 33 is provided with a damping sleeve 37. The damping sleeve 37 can slow down the sliding speed of the cylindrical rod 34 and reduce the vibration load of the cylindrical rod 34.

[0034] Reference Figure 1 and Figure 2 The assembly and disassembly component 4 includes a ferrule 41, and a snap ring 43 is inserted into the inner wall of the ferrule 41. The plug-in effect of the snap ring 43 and the ferrule 41 enables the flow meter body 1 to be installed on the connecting pipe 2. The inner wall of the snap ring 43 is elastically connected with a wedge 46 through a limit spring 45. The elastic force of the limit spring 45 allows the wedge 46 to always maintain a clamping effect with the clamping groove 44 without being affected by external force, thereby limiting the ferrule 41 and keeping the flow meter body 1 fixed. A sealing gasket 42 is provided on the inner wall of the ferrule 41. The sealing gasket 42 is squeezed by the snap ring 43 and the ferrule 41, so that the sealing gasket 42 expands and deforms, thereby sealing the gap between the ferrule 41 and the snap ring 43. A clamping groove 44 is provided on the outer wall of the ferrule 41.

[0035] Reference Figure 2 and Figure 4A guide rod 35 is fixedly connected to the top of the front side of the flow meter body 1. There are four groups of guide rods 35 in the array. The fixing effect of the guide rods 35 prevents the guide rods 35 from falling off. The top of the back side of the buffer plate 31 is hinged to the left end of the hinge rod 38. One end of the reset spring 36 is fixedly connected to the inner wall of the sleeve 33. The other end of the reset spring 36 is fixedly connected to the right end of the cylindrical rod 34. The fixing effect of the reset spring 36 keeps the cylindrical rod 34 fixed to prevent the cylindrical rod 34 from falling off.

[0036] Reference Figure 2 and Figure 3 One end of the spring 32 is fixedly connected to the front side of the flowmeter body 1, and the other end of the spring 32 is fixedly connected to the back side of the buffer plate 31. The fixing effect of the spring 32 keeps the spring 32 fixed to prevent the spring 32 from deflecting or falling off during operation. The top inner wall of the buffer plate 31 is slidably connected to the outer periphery of the guide rod 35. The guide rod 35 guides the buffer plate 31 to prevent the buffer plate 31 from deflecting when moving. The outer periphery of the cylindrical rod 34 is slidably connected to the inner wall of the sleeve 33. The sliding effect of the cylindrical rod 34 squeezes the reset spring 36 and the damping sleeve 37, or drives the hinged rod 38 and the buffer plate 31 to reset.

[0037] Reference Figure 2 The right side of the sleeve 41 is fixedly connected to the left side of the flowmeter body 1, and the fixing effect of the sleeve 41 prevents the sleeve 41 from falling off. The left side of the snap ring 43 is fixedly connected to the right side of the connecting pipe 2, and the fixing effect of the snap ring 43 prevents the snap ring 43 from falling off. One end of the limit spring 45 is fixedly connected to the inner wall of the snap ring 43, and the other end of the limit spring 45 is fixedly connected to the outer wall of the wedge block 46. The fixing effect of the limit spring 45 keeps the wedge block 46 fixed to prevent the wedge block 46 from falling off. The outer wall of the wedge block 46 is slidably connected to the inner wall of the snap ring 43, and the sliding effect of the wedge block 46 makes the wedge block 46 and the slot 44 engage or release the engagement effect. The outer wall of the wedge block 46 is engaged with the inner wall of the slot 44, and the wedge block 46 is engaged with the slot 44, so that the snap ring 43 limits the sleeve 41.

[0038] Working principle: When the staff needs to install the flow meter body 1, the staff will connect the ferrule 41 and the retaining ring 43, so that the wedge block 46 is clamped with the slot 44 under the elastic force of the limit spring 45, and the ferrule 41 is limited at the same time, so that the flow meter body 1 is fixedly installed on the connecting pipe 2, and the sealing gasket 42 is squeezed by the ferrule 41 and the retaining ring 43, so that the sealing gasket 42 expands and deforms, and the gap between the ferrule 41 and the retaining ring 43 is sealed, thereby improving the sealing effect of the flow meter body 1 and facilitating the flow meter body 1 to measure the gas.

[0039] When vehicles or pedestrians pass by, the buffer plate 31 vibrates, and the vibration load is transmitted to the spring 32 and the hinge rod 38 through the buffer plate 31. The elastic force of the spring 32 reduces a part of the vibration load on the flow meter body 1, and the vibration load is transmitted to the cylindrical rod 34 through the hinge rod 38, so that the cylindrical rod 34 slides along the inner wall of the sleeve 33, squeezing the reset spring 36 and the damping sleeve 37. The sliding speed of the cylindrical rod 34 is slowed down by the damping sleeve 37, and the vibration load of the cylindrical rod 34 is reduced. The elastic force of the reset spring 36 further reduces the vibration load of the cylindrical rod 34, so that the vibration on the flow meter body 1 is reduced, thereby improving the measurement accuracy of the flow meter body 1.

[0040] When the flow meter body 1 needs to be disassembled and replaced, the staff presses the wedge block 46 to release the clamping effect of the wedge block 46 on the slot 44 and release the limiting effect on the sleeve 41. The staff releases the plug-in effect of the retaining ring 43 and the sleeve 41, thereby facilitating the disassembly of the flow meter body 1.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas ultrasonic flow meter, comprising a flow meter body (1), characterized in that: A connecting pipe (2) is detachably mounted on the left side of the flow meter body (1), an assembly and disassembly component (4) is disposed on the connecting pipe (2), and a buffer component (3) is disposed on the flow meter body (1); The buffer assembly (3) comprises a buffer plate (31), the back side of the buffer plate (31) being elastically connected to the front side of the flow meter body (1) via a spring (32), a sleeve (33) being fixedly connected to the right side of the top end of the front side of the flow meter body (1), the inner wall of the sleeve (33) being elastically connected to a cylindrical rod (34) via a reset spring (36), the left end of the cylindrical rod (34) being hinged to a hinged rod (38), and a damping sleeve (37) being provided on the inner wall of the sleeve (33).

2. A gas ultrasonic flow meter according to claim 1, characterized in that: The assembly and disassembly component (4) comprises a clamping sleeve (41), the inner wall of which is plugged with a clamping ring (43), the inner wall of which is elastically connected with a wedge block (46) via a limit spring (45), the inner wall of which is provided with a sealing gasket (42), and the outer wall of which is provided with a clamping groove (44).

3. A gas ultrasonic flow meter according to claim 1, characterized in that: A guide rod (35) is fixedly connected to the top of the front face of the flow meter body (1), and the top of the back face of the buffer plate (31) is hinged to the left end of the hinge rod (38).

4. A gas ultrasonic flow meter according to claim 1, characterized in that: One end of the return spring (36) is fixedly connected to the inner wall of the sleeve (33), and the other end of the return spring (36) is fixedly connected to the right end of the cylindrical rod (34).

5. A gas ultrasonic flow meter according to claim 1, characterized in that: One end of the spring (32) is fixedly connected to the front side of the flow meter body (1), and the other end of the spring (32) is fixedly connected to the back side of the buffer plate (31).

6. A gas ultrasonic flow meter according to claim 1, characterized in that: The top inner wall of the buffer plate (31) is slidably connected to the outer periphery of the guide rod (35), and the outer periphery of the cylindrical rod (34) is slidably connected to the inner wall of the sleeve (33).

7. A gas ultrasonic flow meter according to claim 2, characterized in that: The right side of the ferrule (41) is fixedly connected to the left side of the flow meter body (1), and the left side of the clamping ring (43) is fixedly connected to the right side of the connecting pipe (2).

8. A gas ultrasonic flow meter according to claim 2, characterized in that: One end of the limit spring (45) is fixedly connected to the inner wall of the snap ring (43), and the other end of the limit spring (45) is fixedly connected to the outer wall of the wedge block (46). The outer wall of the wedge block (46) is slidably connected to the inner wall of the snap ring (43), and the outer wall of the wedge block (46) is snap-fitted to the inner wall of the slot (44).

Images