High-precision temperature and pressure compensation vortex shedding flowmeter

Abstract

The utility model provides a high-precision temperature and pressure compensation vortex shedding flowmeter, which relates to the field of vortex shedding flowmeters and comprises a main pipe, connecting flanges are arranged at two ends of the main pipe, a flow monitoring component is mounted and connected in the middle of the main pipe, and a temperature and pressure compensator is mounted and connected between the flow monitoring component and the main pipe. Bottom strip bases are arranged at the two ends of the main pipe. The two ejector blocks drive the combined ring to move by rotating the turntable, so that an external pipeline is preliminarily clamped and fixed, the installation process is greatly simplified, and the tedious process that multiple persons need to cooperate and repeatedly adjust the position in a traditional installation mode is avoided; the two top blocks move in opposite directions, so that the two embedded blocks are close to each other and are extruded, gas in the embedded pipe is conveyed into the annular air bag strip, the annular air bag strip expands and is tightly attached to a connecting gap between an external pipeline and a connecting flange, and a good sealing effect can be formed while preliminary installation is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vortex flowmeter field especially relates to a high accuracy temperature pressure compensation vortex flowmeter. BACKGROUND

[0002] In the flow measurement field of industrial production, vortex flowmeter is widely used in chemical industry, energy, environmental protection and other industries due to its wide measurement range, small pressure loss and other advantages, especially plays a key role in the flow measurement of steam, gas and other fluids. With the continuous improvement of industrial automation and the increasingly stringent requirements for measurement accuracy, higher standards are put forward for the installation convenience, sealing performance and measurement accuracy of temperature and pressure compensation vortex flowmeter.

[0003] In the installation aspect, the connection of the traditional temperature and pressure compensation vortex flowmeter and the external pipeline usually relies on manual operation, and multiple people are needed to cooperate to accurately align the flowmeter and the pipeline, and then fix it through multiple groups of bolts. In this process, the position adjustment of the pipeline and the flowmeter is extremely tedious, not only consumes a lot of time and manpower, but also requires continuous control of the alignment of the pipeline and the flowmeter, and the operation experience of the installer is required to be higher, and the installation efficiency is low. And in the sealing performance, the traditional sealing method is to simply use sealing gasket or sealing ring. These sealing gaskets cannot keep close to the connection gap during installation, and are affected by factors such as steam and fluid pressure fluctuation and temperature change, which may cause fluid leakage.

[0004] Therefore, it is necessary to provide a new high-precision temperature and pressure compensation vortex flowmeter to solve the above technical problems. INVENTION CONTENTS

[0005] To solve the above technical problems, the utility model provides a kind of high-precision temperature and pressure compensation vortex flowmeter.

[0006] The high-precision temperature and pressure compensation vortex flowmeter provided by the utility model comprises a main pipe, two connecting flanges are arranged at both ends of the main pipe, a flow monitoring assembly is installed and connected at the middle position of the main pipe, a temperature and pressure compensator is installed and connected between the flow monitoring assembly and the main pipe, and a bottom strip seat is arranged at both ends of the main pipe.

[0007] Preferably, a threaded opening is arranged in each of the two top blocks, the two ends of the built-in shaft are provided with threads in opposite directions, the two top blocks are threadedly connected to the two ends of the built-in shaft respectively, a through groove is arranged on the upper end shell wall of the bottom strip seat, and the two top blocks are slidably connected to the two ends of the through groove respectively.

[0008] Preferably, the inner wall of the plurality of combined rings is provided with an arc-shaped groove, and an annular air bag strip is mounted and connected in the arc-shaped groove.

[0009] Preferably, the two ends of the main pipe are fixedly connected with fixing frames, and the two bottom strip seats are fixedly connected with the two fixing frames.

[0010] Preferably, the sealing assembly comprises an embedded pipe, the embedded pipe is fixedly installed in the embedded groove, one end of the embedded pipe is slidably connected with a pressing rod, one end of the pressing rod is fixedly connected with the embedded block, the embedded pipe is internally provided with a piston, the other end of the pressing rod is fixedly connected with the piston, and the pressing rod is sleeved with a reset spring.

[0011] Preferably, the inner part of the top block is provided with a conveying pipe, one end of the conveying pipe is connected with the embedded pipe, and the other end of the conveying pipe is connected with the annular air bag strip.

[0012] Compared with the related art, the high-precision temperature and pressure compensation vortex flowmeter has the following beneficial effects:

[0013] The utility model discloses a high-precision temperature and pressure compensation vortex flowmeter, which comprises a main pipe, two top blocks, a plurality of combined rings and a sealing assembly.

[0014] 2、The utility model discloses a high-precision temperature and pressure compensation vortex flowmeter, which comprises a main pipe, two top blocks, a plurality of combined rings and a sealing assembly. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model provides a preferable embodiment structure schematic drawing for the utility model.

[0016] Figure 2 The utility model provides a preferable embodiment structure schematic drawing for the utility model. Figure 1 The utility model provides a preferable embodiment structure schematic drawing for the utility model.

[0017] Figure 3 As Figure 2 The structure diagram of the auxiliary butt joint mechanism is shown.

[0018] Figure 4 As Figure 3 The structure diagram of the tablet pressing is shown.

[0019] The figure mark: 1, main pipe; 2, connecting flange; 3, flow monitoring assembly; 31, temperature and pressure compensator; 4, bottom strip seat; 41, combined ring; 42, top block; 43, built-in shaft; 44, rotating disc; 5, annular air bag strip; 51, fitting block; 6, fixing frame; 7, embedded pipe; 71, pressing rod; 72, piston; 73, reset spring. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the drawings and embodiments.

[0021] Please refer to Figures 1 to 4 A high-precision temperature and pressure compensation vortex flowmeter comprises a main pipe 1, connecting flanges 2 are arranged at both ends of the main pipe 1, a flow monitoring assembly 3 is installed and connected at the middle position of the main pipe 1, a temperature and pressure compensator 31 is installed and connected between the flow monitoring assembly 3 and the main pipe 1, and bottom strip seats 4 are arranged at both ends of the main pipe 1; an auxiliary butt joint mechanism comprises two combined rings 41, the two combined rings 41 are symmetrically arranged at both ends of the bottom strip seat 4, top blocks 42 are arranged at the lower ends of the two combined rings 41, a built-in shaft 43 is rotatably connected in the inside of the bottom strip seat 4, a rotating disc 44 is installed and connected to one end of the built-in shaft 43, and sealing assemblies are arranged in the inside of the two top blocks 42.

[0022] In the specific implementation process, as Figure 2 And Figure 3 The two top blocks 42 are provided with threaded openings, the two ends of the built-in shaft 43 are provided with threads in opposite directions, the two top blocks 42 are threadedly connected to the two ends of the built-in shaft 43, a through groove is arranged on the upper end shell wall of the bottom strip seat 4, and the two top blocks 42 are slidably connected to the two ends of the through groove.

[0023] It should be noted that when the rotating disc 44 is rotated, the built-in shaft 43 is rotated, due to the transmission characteristics of the threads, the two top blocks 42 move towards or away from each other along the through groove, and the two top blocks 42 drive the two combined rings 41 to move simultaneously, which can preliminarily clamp and fix the external pipeline, facilitating subsequent installation of multiple bolts by the staff for reinforcement connection, and bringing convenience to the installation work of the staff.

[0024] Reference Figure 3As shown, the inner wall of the plurality of combined rings 41 is provided with an arc-shaped groove, and the annular air bag strip 5 is installed in the arc-shaped groove. The plurality of top blocks 42 are internally provided with an embedded groove, and the embedded groove is provided with an embedded block 51.

[0025] It should be noted that the arc-shaped groove of the inner wall of the combined ring 41 provides precise installation and positioning for the annular air bag strip 5, and cooperates with the positioning and fastening of the two flanges by the two combined rings 41, so that the two flanges can be tightly attached to the inside of the combined ring 41 and precisely sealed at the joint gap.

[0026] In the uninflated state, it does not affect the preliminary contact and positioning of the combined ring 41 with the external pipeline.

[0027] When the top block 42 moves to clamp the combined ring 41 to the external pipeline, the embedded block 51 provides a trigger condition for the activation of the sealing assembly. During the movement of the top block 42, the embedded block 51 is extruded, thereby triggering the operation of the sealing assembly, causing the annular air bag strip 5 to inflate and tightly fit in the gap between the external pipeline and the connecting flange 2, achieving efficient sealing.

[0028] Referring to Figure 1 and Figure 2 As shown, the two ends of the main pipe 1 are fixedly connected with a fixed frame 6, and the two bottom strip seats 4 are fixedly connected with the two fixed frames 6.

[0029] It should be noted that the fixed frame 6 plays a role in stabilizing the connection between the main pipe 1 and the bottom strip seat 4, thereby enhancing the stability of the entire flowmeter structure.

[0030] Referring to Figure 3 and Figure 4 As shown, the sealing assembly includes an embedded pipe 7, which is fixedly installed in the embedded groove. One end of the embedded pipe 7 is slidably connected with a pressure rod 71, one end of the pressure rod 71 is fixedly connected with the embedded block 51, the embedded pipe 7 is internally provided with a piston 72, the other end of the pressure rod 71 is fixedly connected with the piston 72, and the pressure rod 71 is sleeved with a return spring 73.

[0031] It should be noted that when the embedded block 51 is extruded, it will drive the pressure rod 71 to slide on the wall of the embedded pipe 7, thereby pushing the piston 72 to move inside the embedded pipe 7. The movement of the piston 72 compresses the gas inside the embedded pipe 7, causing it to enter the annular air bag strip 5 through the delivery pipe, thereby achieving the inflation sealing of the annular air bag strip 5.

[0032] The setting of the return spring 73 ensures that when the top block 42 is loosened, the pressure rod 71 and the piston 72 can automatically reset, causing the annular air bag strip 5 to deflate and shrink, thereby facilitating the disassembly and reinstallation of the flowmeter.

[0033] Referring to Figure 3 andFigure 4 As shown, the inner part of the top block 42 is provided with a conveying pipe, one end of the conveying pipe is connected with the inner embedded pipe 7, and the other end of the conveying pipe is connected with the annular air bag strip 5.

[0034] It should be noted that the conveying pipe plays a key role in gas transmission, which accurately conveys the compressed gas in the inner embedded pipe 7 to the annular air bag strip 5, so that the annular air bag strip 5 can be rapidly inflated and closely attached to the pipeline gap.

[0035] The working principle of the high-precision temperature and pressure compensation vortex flowmeter provided by the utility model is as follows: when it is necessary to butt joint and install the vortex flowmeter with the external pipeline, the operator pre-aligns the two ends of the vortex flowmeter with the two ends of the pipeline, and then rotates the turntable 44 in sequence, the turntable 44 drives the built-in shaft 43 to rotate inside the bottom strip seat 4, the rotation of the built-in shaft 43 drives the two top blocks 42 to move along the through groove, and the two top blocks 42 can preliminarily clamp and fix the external pipeline, which not only facilitates the subsequent installation of multiple bolts by the staff for reinforcement connection operation, but also brings convenience to the installation work of the staff.

[0036] During the process of clamping the external pipeline by the two top blocks 42 moving towards each other, with the movement of the top block 42, the two embedded blocks 51 are pressed close to each other, the embedded block 51 drives the pressing rod 71 to slide on the wall of the inner embedded pipe 7, the other end of the pressing rod 71 drives the piston 72 to move inside the inner embedded pipe 7, the reset spring 73 is elastically deformed, the gas in the inner embedded pipe 7 is conveyed to the corresponding annular air bag strip 5 through the conveying pipe, the annular air bag strip 5 is inflated, so that it can be closely attached to the connection gap between the external pipeline and the connecting flange 2, and a good sealing effect is formed, and fluid leakage can be further prevented during the process of preliminary installation.

[0037] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion according to the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A high accuracy temperature and pressure compensated vortex flowmeter characterized by, Include: The main pipe (1), both ends of the main pipe (1) are provided with connecting flange (2), the middle part of the main pipe (1) is provided with flow monitoring assembly (3), the flow monitoring assembly (3) is connected with the main pipe (1), and the temperature and pressure compensator (31) is connected between the flow monitoring assembly (3) and the main pipe (1), both ends of the main pipe (1) are provided with bottom strip seat (4); The auxiliary butt joint mechanism includes two combination rings (41), two combination rings (41) are symmetrically provided with two ends of the bottom strip seat (4), the lower end of the two combination rings (41) is provided with a top block (42), the inside of the bottom strip seat (4) is rotatably connected with an embedded shaft (43), one end of the embedded shaft (43) is connected with a rotary disc (44), the inside of the two top blocks (42) is provided with a sealing assembly.

2. The high accuracy temperature and pressure compensated vortex flowmeter of claim 1 wherein, Threaded openings are formed in the two top blocks (42), the embedded shaft (43) is provided with threads in opposite directions at both ends, the two top blocks (42) are threadedly connected with both ends of the embedded shaft (43), and a through groove is formed in the upper end shell wall of the bottom strip seat (4).

3. The high accuracy temperature and pressure compensated vortex flowmeter of claim 1 wherein, Arc-shaped grooves are formed in the inner wall of the plurality of combination rings (41), and annular air bag strips (5) are connected in the arc-shaped grooves, the inside of the plurality of top blocks (42) is provided with an embedded groove, and the embedded groove is provided with an embedded block (51) at the opening position.

4. The high accuracy temperature and pressure compensated vortex flowmeter of claim 1 wherein, Both ends of the main pipe (1) are fixedly connected with a fixed frame (6), and the two bottom strip seats (4) are fixedly connected with the two fixed frames (6).

5. The high accuracy temperature and pressure compensated vortex flowmeter of claim 3 wherein, The sealing assembly includes an embedded pipe (7), the embedded pipe (7) is fixedly installed in the embedded groove, one end of the embedded pipe (7) is slidably connected with a pressing rod (71), one end of the pressing rod (71) is fixedly connected with the embedded block (51), the inside of the embedded pipe (7) is provided with a piston (72), the other end of the pressing rod (71) is fixedly connected with the piston (72), and the pressing rod (71) is sleeved with a return spring (73).

6. A high accuracy temperature and pressure compensated vortex flowmeter according to claim 5 wherein, The inside of the top block (42) is provided with a conveying pipe, one end of the conveying pipe is connected with the embedded pipe (7), and the other end of the conveying pipe is connected with the annular air bag strip (5).

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