Precession vortex flowmeter for measuring high-temperature steam

Abstract

The utility model discloses a vortex precession flowmeter for measuring high-temperature steam, which comprises a flowmeter body, the flowmeter body comprises a transmitter, the bottom of the transmitter is fixedly connected with a support, and the support is mounted on a flowmeter shell; the flowmeter further comprises a heat dissipation mechanism installed on the support. The heat dissipation mechanism comprises a cooling sleeve fixedly connected to the support, and the upper end and the lower end of the cooling sleeve are sealed with the support. A cooling cavity is formed between the cooling sleeve and the shell and is filled with a cooling medium; the heat dissipation mechanism further comprises a heat dissipation frame fixedly connected to the support, a plurality of heat dissipation fans are installed on one side of the heat dissipation frame, a plurality of hot air exhaust through holes are formed in the other side of the heat dissipation frame, and the heat dissipation mechanism further comprises a heat dissipation capillary tube structure arranged on the cooling sleeve. The heat dissipation capillary tube structure comprises a plurality of cooling capillary tubes communicated with the cooling sleeve. According to the mode, the heat-conducting bracket is fully cooled, and the transmitter is protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of swirl flowmeter, and in particular relates to a swirl flowmeter for measuring high-temperature steam. Background Technology

[0002] The vortex flowmeter is a flowmeter used to measure liquid or gas. It can accurately measure the flow rate of the fluid.

[0003] The main structure of the vortex flowmeter includes a transmitter and a flowmeter housing installed at the bottom of the transmitter. The housing is equipped with temperature sensors, flow sensors and other sensors for monitoring stability and flow rate. The transmitter is equipped with a pressure sensor for measuring pressure.

[0004] During the working process, due to the different working environments of the vortex flowmeter, the performance requirements for the vortex flowmeter are different. For example, the vortex flowmeter used to measure high-temperature gas, such as the vortex flowmeter used to measure high-temperature water vapor, has relatively high requirements for the high-temperature resistance of the vortex flowmeter. Specifically, the core metering element-the transmitter contains a circuit board and thermally unstable circuit elements installed on the circuit board. During the measurement process, since the high-temperature steam flows through the shell, and the transmitter is installed on the shell through a bracket, and the distance between the transmitter and the shell is too close, the high temperature on the shell is transferred to the transmitter through the bracket under high-temperature heat conduction during its working process.

[0005] The transmitter is not resistant to high temperatures. Therefore, in actual use, the service life of the vortex flowmeter, which is used in high temperature environments for many years, is very short, and the circuit board in the transmitter is damaged. As a precision instrument, once the flowmeter is disassembled for maintenance, the integrity of the packaging structure is destroyed, resulting in a significant reduction in the measurement accuracy of the flowmeter. In the actual working process, in order to maintain accurate measurement, a new flowmeter can only be replaced, but after a period of use, the flowmeter is damaged again. Contents of utility model

[0006] Based on the above background, the purpose of the utility model is to provide a vortex flowmeter for measuring high-temperature steam.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A vortex flowmeter for measuring high temperature steam, comprising a flowmeter body, the flowmeter body comprising a transmitter, the bottom of the transmitter is fixedly connected with a bracket, the bottom of the bracket is fixedly connected with a bracket seat, and the bracket seat is installed on the flowmeter housing; the vortex flowmeter for measuring high temperature steam also includes a heat dissipation mechanism installed on the bracket;

[0009] The heat dissipation mechanism includes a cooling sleeve fixedly connected to the bracket, and the upper and lower ends of the cooling sleeve are sealed with the bracket;

[0010] A cooling cavity is formed between the cooling sleeve and [the relevant part], and the cooling cavity is filled with a cooling medium;

[0011] The heat dissipation mechanism further includes a heat dissipation frame fixedly connected to the bracket. A plurality of heat dissipation fans are installed on one side of the heat dissipation frame, and a plurality of exhaust air through holes are formed on the other side of the heat dissipation frame;

[0012] The heat dissipation mechanism further includes a heat dissipation capillary structure arranged on the cooling sleeve;

[0013] The heat dissipation capillary structure includes a plurality of cooling capillaries connected to the cooling sleeve, and the cooling capillaries are distributed in an upper and lower layered manner.

[0014] Preferably, the transverse cross-sectional shape of the heat dissipation frame is rectangular, an installation cavity is formed inside the heat dissipation frame, and the bracket penetrates through the top and bottom of the heat dissipation frame;

[0015] The cooling sleeve is accommodated in the installation cavity.

[0016] Preferably, the transverse cross-sectional shape of the cooling sleeve is annular, and the upper and lower ends of the cooling sleeve are respectively sealed and welded to the bracket.

[0017] Preferably, the cooling capillaries are arranged on the cooling sleeve in an inclined distribution manner.

[0018] Preferably, the cooling capillaries are arranged in an upwardly inclined manner, and the upward inclination angle of the cooling capillaries is 25 degrees;

[0019] By arranging the cooling capillaries in an upwardly inclined manner, the cooling effect between the cold air flow and the cooling capillaries is increased.

[0020] Preferably, the material of the cooling capillaries is copper, and the lengths of the cooling capillaries in different distribution layers are different.

[0021] Preferably, an upper sealing bolt is threadedly connected to the top of the cooling sleeve, and a lower sealing bolt is threadedly connected to the bottom of the cooling sleeve.

[0022] Preferably, a plurality of installation holes are formed in the right side wall of the heat dissipation frame, and a plurality of heat dissipation fans are respectively installed in the installation holes.

[0023] Preferably, the flowmeter body further includes a temperature sensor and a flow sensor installed inside the flowmeter housing

[0024] and a pressure sensor installed outside the transmitter;

[0025] The pressure sensor is assembled on the condensing pipe, and the condensing pipe is communicated with the flowmeter housing and the transmitter.

[0026] The utility model has the following beneficial effects:

[0027] 1. During the working process, since heat is conducted from the bracket to the cooling medium, the temperature of the cooling sleeve is high. Therefore, the temperature of the heat dissipation medium is reduced by the air cooling method of the cooling sleeve, and further the heat exchange between the heat dissipation medium and the bracket is increased.

[0028] 2. In the heat dissipation capillary structure, because the number of cooling capillaries is large and the tube diameter is small, the heat exchange with cold air can be carried out quickly, and the rapid cooling is realized in this way.

[0029] 3. The cooling capillaries are arranged in an inclined distribution manner on the cooling sleeve. The cooling capillaries are arranged in an upward inclined manner, and the upward inclined angle of the cooling capillaries is 25 degrees. The heat dissipation capillary structure distributed in the above manner forms an umbrella-shaped heat dissipation structure for each layer. Specifically, the cooling capillaries distributed in a ring for each layer form an inclined diversion surface. Under the drive of the fan, the cooling air flows along the diversion surface. During the diversion process, the action time and contact effect between the cooling air and the cooling capillaries are increased, and thus the heat is carried away quickly.

[0030] At the same time, in the heat dissipation capillary structure, since the lengths of the cooling capillaries in different distribution layers are different, that is, the cooling capillaries are designed to have different lengths, during the working process, the air flow flows between the umbrella-shaped cooling structures formed by the cooling capillaries in different layers. This way increases the air flow flowing between the umbrella-shaped cooling structures and further improves the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0032] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the structure of the bracket-mounted heat dissipation mechanism in the embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of the heat dissipation capillary structure in the embodiment of the present invention;

[0035] Figure 4 For an embodiment of the present utility model Figure 3 is a schematic structural diagram from another perspective in the embodiment;

[0036] Figure 5 For an embodiment of the present utility model Figure 2 is a schematic structural diagram from another perspective in the embodiment.

[0037] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, the descriptions such as "first" and "second" in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] Embodiment 1

[0042] As Figures 1-5As shown in the figure, a precession vortex flowmeter for measuring high-temperature steam includes a flowmeter body. The flowmeter body is a conventional precession vortex flowmeter disclosed in the prior art and has the same structure as the existing precession vortex flowmeter. The flowmeter body includes a transmitter 5. The bottom of the transmitter 5 is fixedly connected to a bracket 21. The bottom of the bracket 21 is fixedly connected to a bracket seat 4, and the bracket 21 seat is installed on the flowmeter housing. At the same time, like the existing flowmeter, the above flowmeter body also includes a temperature sensor 6 and a flow sensor 7 installed in the flowmeter housing. Like the existing flowmeter, the sensors are electrically connected to the circuit elements in the transmitter 5 through data wires.

[0043] When used for transporting high-temperature gases such as high-temperature steam, the heat of the housing (the high-temperature steam is transported from the housing) is directly conducted to the transmitter 5 through the bracket 21, causing damage to the transmitter 5.

[0044] Therefore, the improvement is as follows:

[0045] The precession vortex flowmeter for measuring high-temperature steam further includes a heat dissipation mechanism installed on the bracket 21. Specifically, the heat dissipation mechanism includes a cooling sleeve 23 fixedly connected to the bracket 21 (the cooling sleeve 23 is made of copper with excellent heat dissipation performance, and the transverse cross-sectional shape of the cooling sleeve 23 is annular). The upper and lower ends of the cooling sleeve 23 are sealed with the bracket 21 by welding. At the same time, a cooling cavity is formed between the cooling sleeve 23, and the cooling cavity is filled with a cooling medium.

[0046] Specifically, an upper sealing bolt is threadedly connected to the top of the cooling sleeve 23, and a lower sealing bolt A is threadedly connected to the bottom of the cooling sleeve 23. Unscrew the upper sealing bolt and add a cooling medium such as heat-conducting oil agent into the cooling cavity. At this time, the main structure of the bracket 21 is immersed in the cooling oil agent.

[0047] In this way, the bracket 21 can be cooled sufficiently and quickly.

[0048] To improve the cooling effect, the above heat dissipation mechanism further includes a heat dissipation frame 22 fixedly connected to the bracket 21 (specifically, the transverse cross-sectional shape of the heat dissipation frame 22 is rectangular, an installation cavity is provided in the heat dissipation frame 22, and the bracket 21 penetrates through the top and bottom of the heat dissipation frame 22; the cooling sleeve 23 is accommodated in the installation cavity). A plurality of heat dissipation fans 24 are installed on the right side of the heat dissipation frame 22 (the heat dissipation fans 24 are installed in the installation holes 221 provided on the right side wall of the heat dissipation frame 22). Correspondingly, a plurality of exhaust air through holes 222 are provided on the other side of the heat dissipation frame 22.

[0049] During the working process, since the heat is conducted from the bracket 21 to the cooling medium, the temperature of the cooling sleeve 23 is high. Therefore, the temperature of the cooling medium is reduced by the air-cooling method of the cooling sleeve 23, and further the heat exchange between the cooling medium and the bracket 21 is increased.

[0050] Example 2

[0051] As Figures 1-5 shown, on the basis of the structure of Embodiment 1, in this embodiment, due to the very high heat of the high-temperature gas, the temperature of the bracket 21 is high. Therefore, in order to quickly and fully reduce the temperature of the bracket 21, the temperature of the heat dissipation medium is quickly reduced by fully cooling the cooling sleeve 23, thereby accelerating the heat conduction with the bracket 21 and quickly reducing the temperature of the bracket 21.

[0052] Specifically, the heat dissipation mechanism further includes a heat dissipation capillary structure provided on the cooling sleeve 23. The heat dissipation capillary structure is a thin tube made of copper, which is welded and connected to the cooling sleeve 23. When the temperature of the heat dissipation medium increases, at this time, the pressure in the cooling cavity increases (according to pV=nRT). Therefore, in order to achieve pressure balance, the heat dissipation medium moves into the heat dissipation capillary structure. The heat dissipation capillary structure has a large number of distributions and a small tube diameter, so it can quickly exchange heat with cold air.

[0053] Specifically, the heat dissipation capillary structure includes a number of cooling capillaries 25 connected to the cooling sleeve 23, and the cooling capillaries 25 are distributed in an upper and lower layered manner.

[0054] At the same time, in order to improve the contact effect with cold air, the above-mentioned cooling capillaries 25 are arranged in an inclined distribution manner on the cooling sleeve 23. The cooling capillaries 25 are arranged in an upwardly inclined manner, and the upward inclination angle of the cooling capillaries 25 is 25 degrees.

[0055] The heat dissipation capillary structure distributed in the above manner forms an umbrella-shaped heat dissipation structure for each layer. Specifically, the annularly distributed cooling capillaries 25 of each layer form an inclined diversion surface, and under the drive of the fan, the cooling air flows along the diversion surface. During the diversion process, the action time and contact effect between the cooling air and the cooling capillaries 25 are increased, thereby quickly carrying the heat.

[0056] And because in the heat dissipation capillary structure, the lengths of the cooling capillaries 25 in different distribution layers are different, that is, the cooling capillaries 25 are designed to have different lengths, so that during the working process, the air flow flows between the umbrella-shaped cooling structures formed by the cooling capillaries 25 in different layers. This way increases the air flow flowing between the umbrella-shaped cooling structures and further improves the heat dissipation effect.

[0057] Because the heat dissipation medium in the cooling capillary 25 conducts heat after the temperature drops, specifically, it flows and exchanges with the high-temperature medium in the cooling cavity. Under continuous air cooling, the use of a large number of distributed cooling capillaries 25 quickly reduces the temperature, greatly improves the cooling effect, and protects the transmitter 5.

[0058] Embodiment 3

[0059] As Figures 1-5 shown, on the basis of the structure of Embodiment 1, in order to protect the pressure sensor 1 in the transmitter 5, the existing built-in method of the pressure sensor 1 is designed into an external method. Specifically, it has the same installation method as the existing pressure sensor 1. The above-mentioned pressure sensor 1 is assembled on the condenser tube 3, and the condenser tube 3 is connected to the flowmeter housing and the transmitter 5.

[0060] Certainly, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. A vortex flowmeter for measuring high temperature steam, comprising a flowmeter body, the flowmeter body comprising a transmitter, a bracket fixedly connected to the bottom of the transmitter, a bracket seat fixedly connected to the bottom of the bracket, and the bracket seat mounted on the flowmeter housing; characterized in that: The vortex flowmeter for measuring high temperature steam also includes a heat dissipation mechanism installed on the bracket; The heat dissipation mechanism comprises a cooling sleeve fixedly connected to the bracket, and the upper and lower ends of the cooling sleeve are sealed with the bracket; A cooling cavity is formed between the cooling sleeve and the cooling chamber, and the cooling cavity is filled with a cooling medium; The heat dissipation mechanism also includes a heat dissipation frame fixedly connected to the bracket, a plurality of heat dissipation fans are installed on one side of the heat dissipation frame, and a plurality of heat exhaust holes are opened on the other side of the heat dissipation frame; The heat dissipation mechanism also includes a heat dissipation capillary structure arranged on the cooling sleeve; The heat dissipation capillary structure comprises a plurality of cooling capillaries connected to the cooling sleeve, and the cooling capillaries are distributed in an upper and lower layered manner.

2. The vortex flowmeter for measuring high temperature steam according to claim 1, characterized in that: The transverse cross-section of the heat dissipation frame is rectangular, a mounting cavity is provided in the heat dissipation frame, and the bracket passes through the top and bottom of the heat dissipation frame; The cooling sleeve is accommodated in the installation cavity.

3. The vortex flowmeter for measuring high temperature steam according to claim 1, characterized in that: The transverse cross-section of the cooling sleeve is in the shape of a ring, and the upper and lower ends of the cooling sleeve are respectively sealed and welded on the bracket.

4. The vortex flowmeter for measuring high temperature steam according to claim 1, characterized in that: The cooling capillaries are arranged on the cooling sleeve in an inclined distribution manner.

5. The vortex flowmeter for measuring high temperature steam according to claim 4, characterized in that: The cooling capillary is arranged in an upwardly inclined manner, and the upwardly inclined angle of the cooling capillary is 25 degrees; By arranging the cooling capillary tube to tilt upward, the cooling effect between the cold air flow and the cooling capillary tube is increased.

6. The vortex flowmeter for measuring high temperature steam according to claim 4, characterized in that: The cooling capillary is made of copper, and the lengths of the cooling capillaries in different distribution layers are different.

7. The vortex flowmeter for measuring high temperature steam according to claim 1, characterized in that: The top of the cooling sleeve is threadedly connected with an upper sealing bolt, and the bottom of the cooling sleeve is threadedly connected with a lower sealing bolt.

8. The vortex flowmeter for measuring high temperature steam according to claim 1, characterized in that: The right side wall of the heat dissipation frame is provided with a plurality of mounting holes, and a plurality of heat dissipation fans are respectively installed in the mounting holes.

9. The vortex flowmeter for measuring high temperature steam according to claim 1, characterized in that: The flow meter body also includes a temperature sensor and a flow sensor installed in the flow meter housing and a pressure sensor installed outside the transmitter; The pressure sensor is mounted on a condenser, and the condenser is connected to a flow meter housing and a transmitter.

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