Full-jacket vortex shedding flowmeter with high accuracy

Abstract

The utility model discloses a full-jacket vortex shedding flowmeter with high accuracy, which comprises a shell, a jacket sleeved on the outer side of the shell, a bracket fixing seat, a sensor fixing seat, a flowmeter arranged in the sensor fixing seat and a connecting ring sleeve, the top of the shell is in welded connection with the bottom of the sensor fixing seat; a probe of the flow meter extends into the shell; the connecting ring sleeve sleeves the lower part of the outer side of the sensor fixing seat, the bottom of the connecting ring sleeve is connected with the shell, and the top of the connecting ring sleeve is welded with the jacket; the bracket fixing seat sleeves the middle upper part of the outer side of the sensor fixing seat; the bottom of the bracket fixing seat is welded with the jacket; the bracket fixing seat is connected with a bracket; gaps are reserved between the outer wall of the sensor fixing base and the inner wall of the support fixing base, between the inner wall of the connecting ring sleeve and between the inner wall of the support, the connecting ring sleeve and the annular groove are arranged, the influence of vibration force generated by equipment operation on the flowmeter can be effectively reduced, and the monitoring accuracy of the flowmeter is high.

Description

Technical Field

[0001] The utility model relates to the field of vortex flowmeters, in particular to a full-jacket vortex flowmeter with high precision. Background Art

[0002] Vortex flowmeter is a volume flowmeter that measures the volume flow rate, standard volume flow rate or mass flow rate of gas, steam or liquid based on the Karman vortex principle. It is mainly used for flow measurement of industrial pipeline medium fluids, such as gas, liquid, steam and other media.

[0003] The difference between a fully jacketed vortex flowmeter and an ordinary vortex flowmeter is that a jacket 2 is provided outside a shell 1, and a heat source connecting pipe 8 is provided on the jacket 2 to ensure the temperature of the liquid / gas in the shell 1; the basic structure of an existing fully jacketed vortex flowmeter is as follows Figure 1 , Figure 2 As shown, the outer wall of the sensor fixing seat 4 is welded to the shell 1 and the jacket 2 respectively, and fits with the inner wall of the bracket fixing seat 3 and the inner wall of the bracket 7. A flow meter 5 is arranged in the sensor fixing seat 4, and the probe of the flow meter 5 extends into the shell 1. The problem with the full jacket vortex flowmeter of this structure is: since the sensor fixing seat 4 is welded to the shell 1 and the jacket 2, and fits with the inner walls of the bracket fixing seat 3 and the bracket 7, when the full jacket vortex flowmeter is running, the vibrations generated by the three points of the heat source connecting pipe 8, the regulating valve 9 arranged on the heat source connecting pipe 8, and the transmitter 10 on the top of the bracket 7 will be directly transmitted to the sensor fixing seat 4, thereby affecting the detection accuracy of the flow meter 5. Utility Model Content

[0004] The utility model aims to provide a fully jacketed vortex flowmeter with high accuracy.

[0005] The innovation of the utility model is that the application can effectively reduce the influence of the vibration force generated by the operation of the equipment on the flow meter by setting the connecting ring sleeve and the annular groove, and the flow meter has high detection accuracy.

[0006] In order to achieve the above utility model purpose, the technical solution of the utility model is:

[0007] A high-precision fully jacketed vortex flowmeter comprises a shell, a jacket sleeved on the outside of the shell, a bracket fixing seat, a sensor fixing seat and a flowmeter arranged in the sensor fixing seat, and also comprises a connecting ring sleeve; the top of the shell is welded to the bottom of the sensor fixing seat; the probe of the flowmeter extends into the shell; the connecting ring sleeve is sleeved on the lower part of the outside of the sensor fixing seat, the bottom of the connecting ring sleeve is connected to the shell, and the top is welded to the jacket; the bracket fixing seat is sleeved on the middle and upper part of the outside of the sensor fixing seat, the bottom of the bracket fixing seat is welded to the jacket; the bracket is connected to the bracket fixing seat; there are gaps between the outer wall of the sensor fixing seat and the inner wall of the bracket fixing seat, the inner wall of the connecting ring sleeve and the inner wall of the bracket.

[0008] Furthermore, an annular groove is also provided on the top of the shell; the annular groove is located below the linking ring.

[0009] Furthermore, the depth of the annular groove is 1 / 4 to 1 / 3 of the thickness of the shell tube wall.

[0010] Furthermore, the width of the annular groove does not exceed the thickness of the connecting ring sleeve wall.

[0011] The beneficial effects of the utility model are:

[0012] First: without changing the structure of the existing fully jacketed vortex flowmeter, a connecting ring is provided between the shell and the jacket to ensure the sealing between the shell and the jacket. At the same time, the sensor fixing seat is only connected to the shell, not to the jacket, and there are gaps between the connecting ring, the bracket fixing seat and the inner wall of the bracket. Therefore, the vibration force generated by the jacket, the bracket fixing seat, the bracket and the transmitter will not be directly transmitted to the sensor fixing seat, and will not directly affect the flow meter.

[0013] Second: Since the jacket is connected to the shell, the bracket fixing seat is connected to the jacket, the vibration force generated on the bracket, the transmitter, the heat source connecting pipe and the regulating valve will be transmitted to the shell, and most of the vibration force will be absorbed by the shell itself. An annular groove is set on the top of the shell, which is more conducive to the shell absorbing these vibration forces. The vibration force finally transmitted to the flow meter will be greatly weakened, and the measurement accuracy of the flow meter will be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of an existing fully jacketed vortex flowmeter.

[0015] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0016] Figure 3 It is a schematic diagram of the structure of the utility model.

[0017] Figure 4 for Figure 3 Enlarged view of part B in .

[0018] In the figure: 1 is the shell, 1.1 is the annular groove, 2 is the jacket, 3 is the bracket fixing seat, 4 is the sensor fixing seat, 5 is the flow meter, 6 is the connecting ring sleeve, 7 is the bracket, 8 is the heat source connecting pipe, 9 is the regulating valve, and 10 is the transmitter. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings.

[0020] A high-precision full-jacketed vortex flowmeter comprises a shell 1, a jacket 2 sleeved on the outside of the shell 1, a bracket fixing seat 3, a sensor fixing seat 4 and a flowmeter 5 arranged in the sensor fixing seat 4, and also comprises a connecting ring sleeve 6; the top of the shell 1 is welded to the bottom of the sensor fixing seat 4; the probe of the flowmeter 5 extends into the shell 1; the connecting ring sleeve 6 is sleeved on the lower part of the outside of the sensor fixing seat 4, the bottom of the connecting ring sleeve 6 is connected to the shell 1, and the top is welded to the jacket 2; the bracket fixing seat 3 is sleeved on the middle and upper part of the outside of the sensor fixing seat 4, the bottom of the bracket fixing seat 3 is welded to the jacket 2; the bracket fixing seat 3 is connected to a bracket 7; there are gaps between the outer wall of the sensor fixing seat 4 and the inner wall of the bracket fixing seat 3, the inner wall of the connecting ring sleeve 6 and the inner wall of the bracket 7.

[0021] Furthermore, without changing the structure of the existing fully jacketed vortex flowmeter, a connecting ring 6 is provided between the shell 1 and the jacket 2 to ensure the sealing between the shell 1 and the jacket 2. At the same time, the sensor fixing seat 4 is only connected to the shell 1, not to the jacket 2, and there are gaps between the connecting ring 6, the bracket fixing seat 3 and the inner wall of the bracket 7. Therefore, the vibration force generated by the jacket 2, the bracket fixing seat 3, the bracket 7 and the transmitter 10 will not be directly transmitted to the sensor fixing seat 4, and will not directly affect the flowmeter 5.

[0022] Furthermore, an annular groove 1.1 is also provided on the top of the shell 1; the annular groove 1.1 is located below the connecting collar 6.

[0023] Furthermore, the depth of the annular groove 1.1 is 1 / 4 to 1 / 3 of the thickness of the tube wall of the shell 1.

[0024] Furthermore, the width of the annular groove 1.1 does not exceed the thickness of the wall of the connecting ring sleeve 6.

[0025] Furthermore, since the jacket 2 is connected to the shell 1 and the bracket fixing seat 3 is connected to the jacket 2, the vibration force generated on the bracket 7, the transmitter 10, the heat source connecting pipe 8 and the regulating valve 9 will be transmitted to the shell 1, and most of the vibration force will be absorbed by the shell 1 itself. An annular groove 1.1 is arranged on the top of the shell 1. The annular groove 1.1 is more conducive to the shell 1 to absorb these vibration forces. The vibration force finally transmitted to the flow meter 5 will be greatly weakened, and the measurement accuracy of the flow meter 5 will be greatly improved.

[0026] The described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of 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.

Claims

1. A fully jacketed vortex flowmeter with high accuracy, comprising a housing (1), a jacket (2) sleeved on the outside of the housing (1), a bracket fixing seat (3), a sensor fixing seat (4), and a flowmeter (5) arranged in the sensor fixing seat (4), characterized in that: It also includes a connecting ring sleeve (6); the top of the shell (1) is welded to the bottom of the sensor fixing seat (4); and the probe of the flow meter (5) extends into the shell (1); The connecting ring sleeve (6) is sleeved on the lower outer portion of the sensor fixing seat (4); the bottom of the connecting ring sleeve (6) is connected to the housing (1), and the top is welded to the jacket (2); The bracket fixing seat (3) is sleeved on the upper middle part of the outer side of the sensor fixing seat (4); the bottom of the bracket fixing seat (3) is welded to the jacket (2); and the bracket (7) is connected to the bracket fixing seat (3); Gaps are left between the outer wall of the sensor fixing seat (4), the inner wall of the bracket fixing seat (3), the inner wall of the connecting ring sleeve (6) and the inner wall of the bracket (7).

2. A high-precision fully jacketed vortex flowmeter according to claim 1, characterized in that: An annular groove (1.1) is also provided on the top of the shell (1); the annular groove (1.1) is located below the connecting ring sleeve (6).

3. A high-precision fully jacketed vortex flowmeter according to claim 2, characterized in that: The depth of the annular groove (1.1) is 1 / 4 to 1 / 3 of the thickness of the tube wall of the shell (1).

4. A high-precision full-jacketed vortex flowmeter according to claim 2 or 3, characterized in that: The width of the annular groove (1.1) does not exceed the thickness of the tube wall of the connecting ring sleeve (6).

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