TWM551266U - Electromagnetic flowmeter - Google Patents

Description

Electromagnetic flowmeter

The present invention relates to an electromagnetic flowmeter, and more particularly to an electromagnetic flowmeter that is fastened by a screw-solid component.

The electromagnetic flowmeter is the law of the law of electromagnetic induction. When the conductive liquid flows in the magnetic field perpendicular to the direction of the magnetic field line, the magnetic field line is cut to generate an induced voltage, and the induced voltage is linear with the flow velocity. , the flow rate of the fluid volume can be calculated. This product has been widely used in papermaking, chemical, electric power, metallurgy, water supply and drainage, sewage treatment, liquid high pressure metering, medicine, food, environmental protection and other industries, and is used to measure conductive non-magnetic liquid and slurry in closed pipelines.

In the conventional installation of electromagnetic flowmeters, it is necessary to manually weld them in the field. For example, the upper/lower outer cover and the pipe body and the pipe body are welded and fixed by welding. However, since the relevant sensing module is disposed around the pipe body, the sensing module often causes damage due to the high temperature influence of the welding. Furthermore, when the upper and lower covers are welded, the internal sensing module or electrode cannot be replaced if it is damaged, and the entire tube body must be replaced. Further, the conventional upper and lower covers and the tube body are made of iron or an alloy thereof, and the cost is high and the press forming and molding are not easy.

In view of this, how to design an electromagnetic flowmeter to improve the above-mentioned technical solutions is a major problem that the creators of the present invention are trying to solve.

One of the aims of the present invention is to provide an electromagnetic flowmeter that avoids damage to internal components caused by high temperatures generated by welding.

Another object of the present invention is to provide an electromagnetic flowmeter that is fastened with a screwing element to replace or repair internal components at any time.

To achieve the above objectives, the present invention provides an electromagnetic flowmeter for measuring a fluid. The electromagnetic flowmeter comprises a measuring tube body, two electromagnetic sensing modules, a first cover body, a second cover body and a plurality of screw fixing elements. The electromagnetic sensing modules are symmetrically disposed on the outer wall surface of the measuring tube body. The first cover corresponds to an electromagnetic sensing module cover. The second cover body is covered with another electromagnetic sensing module and is coupled with the first cover body, and the second cover body and the first cover body simultaneously clamp the measuring tube body. The control body is disposed on the first cover or the second cover. The control body is electrically connected to the electromagnetic sensing modules, and each electromagnetic sensing module is driven to generate an electromagnetic field to sense the flow rate of the fluid in the measuring tube.

The creation also has the following effects: the materials of the first cover body and the second cover body are respectively cast by aluminum alloy, which is not only cheaper than the existing iron casting, but also easy to form various curved bending rates, and has rapid forming, time saving and weight. Reduce and save costs and other advantages.

In a preferred embodiment, the first cover body and the second cover body are respectively symmetrically disposed with a plurality of positioning convex portions and corresponding plurality of positioning concave portions, and after being assembled by the positioning convex portions and the positioning concave portions, respectively, The screwing of the screwing component facilitates quick assembly by the field assembler, making assembly and fastening of the first cover and the second cover easier and less time efficient.

In addition, the first cover body is provided with a first groove and a first step portion adjacent to the first groove, and the second cover body is provided with a second groove and a second step portion adjacent to the second groove, Such as waterproof glue, soft colloid A waterproof member such as a gasket or a soft rubber strip fills a gap between the first cover and the second cover, so that the first cover and the second cover can effectively achieve sealing and have both waterproof and airtight effects.

100‧‧‧Electromagnetic flowmeter

110‧‧‧Measurement tube body

112‧‧‧Flange

120‧‧‧Electromagnetic sensing module

122‧‧‧First magnetic guide

124‧‧‧Exciting coil

126‧‧‧Second magnetic guide

130‧‧‧First cover

132‧‧‧First curved section

134‧‧‧First flange

136‧‧‧First positioning projection

138‧‧‧First positioning recess

140, 160‧‧‧Assembled holes

142‧‧‧First Order

144‧‧‧First accommodation space

146‧‧‧ first trench

150‧‧‧Second cover

152‧‧‧Second curved part

154‧‧‧second flange

156‧‧‧Second positioning convex

158‧‧‧Second positioning recess

162‧‧‧ second-order department

164‧‧‧Second accommodating space

166‧‧‧Second trench

170‧‧‧Waterproof glue

172‧‧‧Soft gel gasket

174‧‧‧Soft strips

180‧‧‧Spiral components

182‧‧‧ bolt

184‧‧‧ nuts

200‧‧‧Control ontology

1 is an exploded view showing a first preferred embodiment of the present creation.

2 is a perspective view showing a second cover of the first preferred embodiment of the present invention.

FIG. 3 is a combination diagram showing a first preferred embodiment of the present creation.

4 is a cross-sectional view showing a first preferred embodiment of the present creation.

FIG. 5 is a perspective view showing a second cover of the second preferred embodiment of the present invention.

FIG. 6 is a perspective view showing a second cover body according to a third preferred embodiment of the present invention.

The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are only for reference and explanation, and are not intended to limit the creation.

As shown in FIGS. 1 to 4, the present invention provides an electromagnetic flowmeter 100 for measuring a fluid (not shown). The electromagnetic flowmeter includes a measuring tube body 110, two electromagnetic sensing modules 120, a first cover body 130, a second cover body 150 and a plurality of screwing elements 180. The measuring tube body 110 is preferably a hollow tube body composed of a non-magnetic material such as copper, aluminum, chromium or an alloy thereof, and is coupled to a certain pipe of a pipe body (not shown) to be tested. It is used to measure the fluid flow rate in the tube to be tested.

As shown in the figure, each electromagnetic sensing module 120 is symmetrically disposed on the outer wall surface of the measuring tube body 110. In this embodiment, the electromagnetic sensing module 120 includes two first magnetic conductive members 122 symmetrically disposed, two exciting magnetic coils 124 stacked on each of the first magnetic conductive members 122, and two second electrodes respectively connected to the respective exciting coils 124. Two magnetic parts 126. Each of the second magnetic conductive members 126 is, for example, a U-shaped elastic iron material, and is screwed to the respective exciting coils 124 by screws or the like. The volume flow rate flowing through the measuring tube body 110 can be measured by electromagnetic induction through each of the first magnetic conductive members 122 and the respective exciting coils 124. The material 124 of each of the first magnetic conductive members 122 / the second magnetic conductive members, such as iron or an alloy thereof, is not limited.

The first cover body 130 corresponds to one of the electromagnetic sensing modules 120 and has a corresponding two first curved portions 132 , a first flange 134 , and a first groove formed on the first flange 134 . 146 and a first accommodating space 144 for accommodating part of the electromagnetic sensing module 120, each of the first curved portions 132 is sleeved to measure the outer wall surface of the tubular body 110. The second cover 150 is corresponding to the cover of the other electromagnetic sensing module 120 and is coupled to the first cover 130. The second cover 150 and the first cover 130 simultaneously clamp the measuring tube 110.

The second cover 150 has a corresponding second second curved portion 152, a second flange 154, a second groove 166 formed in the second flange 154, and a second portion of the receiving portion of the electromagnetic sensing module 120. The accommodation space 164. The second flange 154 abuts against the first flange 134, and each of the second curved portions 152 abuts against the outer wall surface of the measuring tube body 110.

The first flange 134 and the second flange 154 of the present embodiment protrude upward from the periphery of the first cover 130 and the second cover 150, respectively. Each of the first curved portion 132 and each of the second curved portions 152 has a circular arc shape for attaching and measuring the outer wall tube surface of the tubular body 110. In the first embodiment, a waterproof adhesive 170 is interposed between the first trench 146 and the second trench 166. When the first cover 130 is combined with the second cover 150, the waterproof adhesive 170 is subjected to the first A cover 130 and the second cover 150 are pressed and deformed to fill the first groove 146 and the second groove 166.

In addition, a plurality of screw elements 180 that respectively pass through the first flange 134 and the second flange 154 are included to fasten the measuring tube body 110 between the first cover 130 and the second cover 150. Each of the screwing elements 180 is respectively connected to the first flange 134 and the second flange 154, so that the first cover 130 is sleeved and the measuring tube body 110 is fastened. The second cover 150 further forms a sealed chamber (not labeled) between the first receiving space 144 and the second receiving space 164.

Each of the first flange 134 and the second flange 154 is correspondingly provided with a plurality of assembly holes 140 and 160, and each of the assembly holes 140 and 160 is configured to be fixedly connected to each of the screw elements 180. Each of the screwing elements 180 includes a screw 182 that passes through each of the assembly holes 140, 160 and a nut 184 that is screwed to the screw 182.

The first cover body 130 further includes a first positioning convex portion 136 and a first positioning concave portion 138 which are symmetrically disposed. The second cover body 150 includes a second positioning convex portion 156 and a second positioning concave portion which are symmetrically disposed with each other. 158. When the first cover 130 is coupled to the second cover 150 , the first positioning protrusion 136 is received in the second positioning recess 158 , and the second positioning protrusion 158 is received in the first positioning recess 138 . The first positioning protrusion 138 and the second positioning protrusion 158 of the embodiment are respectively disposed on the first flange 134 and the second flange 154 and are a plurality of positioning posts, and the first positioning concave portion 138 and the second positioning concave portion 158 are It is a plurality of positioning holes.

In the embodiment shown in FIG. 1 , the first cover body 130 is preferably disposed with two first positioning protrusions 136 , and is located at one end of the first flange 134 , corresponding to the second of the two first positioning protrusions 136 . The flange 154 is provided with two second positioning recesses 158 for inserting the second positioning recesses 158. The second cover 150 is also provided with two second positioning protrusions 156 at the same time, and is located at one end of the second flange 154 (ie, opposite to the other end of the first flange 134), corresponding to the first of the second positioning protrusions 156. The flange 134 is provided with two first positioning recesses 138 for inserting the first positioning recesses 138.

In other words, each of the first positioning protrusions 136 and each of the first positioning recesses 138 of the first cover 130 is inverted with respect to each of the second positioning protrusions 156 and the second positioning recesses 158 of the second cover 150. After the convex portions 136 and 156 are assembled with the positioning recesses 138 and 158, the first cover body 130 and the second cover body 150 are assembled more accurately, the positioning is easier, the time is saved, and the efficiency is improved.

After the positioning protrusions 136 and 156 are correspondingly inserted into the positioning recesses 158 and 138 respectively, the first cover body 130 and the first cover body 130 are screwed through the assembly holes 140 and 160 through the respective screwing elements 180 and 160. The second cover 150 is placed on the measuring tube 110 to facilitate quick assembly by the field assembler. Thereby, the high temperature generated by the welding method is avoided to damage the components of the electromagnetic sensing module 120, thereby reducing the reliability of the product and the accuracy of the measurement. Conversely, when the internal components of the electromagnetic flowmeter 100, such as modules, electrodes, or the like, are damaged, it is convenient for the maintenance personnel to replace or replace them at any time to reduce the maintenance cost.

In the present embodiment, an appropriate amount of a waterproof rubber 170 is injected between the first flange 134 and the second flange 154. The first flange 134 further has a first step 142 and two first grooves 146 connecting the first step 142. The second flange 154 has a second step 162 and two connected to the second step 162. The second trench 166 is formed in each of the first curved portions 132 , and each of the second trenches 166 is formed in each of the second curved portions 152 . The first step portion 142 is preferably disposed relative to each of the first positioning protrusions 136, and the second step portion 162 is also disposed on the other end of each of the second positioning protrusions 156 such that the first step portion 142 is symmetric with the second step portion 162. Settings.

After the first cover body 130 and the second cover body 150 respectively cover the electromagnetic sensing modules 120, they are screwed through the screw elements 180 to force the thick waterproof glue 170 to overflow and block the first stage. The portion 142, the first groove 146 or the second step portion 162, and each of the second grooves 166 further fill a gap (not shown) between the first cover 130 and the second cover 150. Thus, the first cover body 130 and the second cover body 150 of the present embodiment can effectively achieve sealing and have both waterproof and airtight effects.

Furthermore, in the first embodiment, a control body 200 disposed on the first cover body 130 or the second cover body 150 and a flange 112 sleeved on both ends of the measuring tube body 110 are further included. Control body 200 Each electromagnetic sensing module 120 is connected to display and can set relevant parameters. The structure of the control body 200 and the flange 112 and the like are prior art and will not be described herein.

Please refer to FIG. 5 together for a perspective view of the second cover of the second preferred embodiment of the present invention. In this embodiment, a soft gel spacer 172 disposed on the first trench 146 or the second trench 166 is further included. Further, the soft gel spacer 172 is disposed on the first step portion 142, each of the second trenches 146 or the second step portions 162, and each of the second trenches 166.

When the first cover body 130 and the second cover body 150 respectively cover the electromagnetic sensing modules 120, the first step portion 142, the first groove 146 or the second step portion 162, and each of the second grooves 166 Set the soft gel gasket 172 (ie waterproof gasket). At this time, the screwing elements 180 are screwed to force the soft gel gasket 172 to deform, thereby filling the gap between the first cover 130 and the second cover 150 (not shown) to achieve the sealing waterproof effect. The cross-sectional shape of the soft gel spacer 172 shown in FIG. 5 is preferably a rectangular sheet shape and is made of plastic, rubber or other suitable material.

Please also refer to FIG. 6 for a perspective view of the second cover of the third preferred embodiment of the present invention. In this embodiment, a soft strip 174 disposed on the first trench 146 or the second trench 166 is further included. Further, the flexible strip 174 is disposed on the first step portion 142, each of the second trenches 146 or the second step portions 162, and each of the second trenches 166.

When the first cover body 130 and the second cover body 150 respectively cover the electromagnetic sensing modules 120, the first step portion 142, the first groove 146 or the second step portion 162, and each of the second grooves 166 Set the soft strip 174. At this time, the screwing elements 180 are screwed to force the flexible strip 174 to deform, thereby filling the gap between the first cover 130 and the second cover 150 (not shown) to achieve the sealing waterproof effect. The flexible strip 174 shown in FIG. 6 preferably has a circular cross section and is made of plastic, rubber or other suitable material.

In summary, the embodiments disclosed herein are to be considered as illustrative of the present invention and are not intended to limit the present invention. The scope of this creation is defined by the scope of the appended patent application and covers its legal equivalents and is not limited to the foregoing description.

100‧‧‧Electromagnetic flowmeter

110‧‧‧Measurement tube body

112‧‧‧Flange

120‧‧‧Electromagnetic sensing module

122‧‧‧First magnetic guide

124‧‧‧Exciting coil

126‧‧‧Second magnetic guide

130‧‧‧First cover

134‧‧‧First flange

144‧‧‧First accommodation space

146‧‧‧ first trench

150‧‧‧Second cover

154‧‧‧second flange

164‧‧‧Second accommodating space

170‧‧‧Waterproof glue

200‧‧‧Control ontology

Claims (12)

An electromagnetic flowmeter for measuring a fluid, the electromagnetic flowmeter comprising: a measuring tube body; two electromagnetic sensing modules symmetrically disposed on an outer wall surface of the measuring tube body; a first cover body Corresponding to one of the electromagnetic sensing module covers; a second cover body, another electromagnetic sensing module is disposed and coupled with the first cover body, the second cover body and the first cover body And clamping the measuring tube body; and a control body disposed on the first cover body or the second cover body, the control body is electrically connected to each of the electromagnetic sensing modules, and driving each of the electromagnetic sensing The module generates an electromagnetic field to sense the flow of the fluid within the measuring tube. The electromagnetic flowmeter of claim 1, wherein the first cover has a first flange, a corresponding two first curved portions, and a first groove formed in the first flange, the first The second cover body has a second flange abutting the first flange, a corresponding second second curved portion, and a second groove formed on the second flange, each of the first curved portion and Each of the second curved portions abuts against an outer wall surface of the measuring tube body. The electromagnetic flowmeter of claim 2, further comprising: impregnating a waterproof adhesive between the first trench and the second trench, the waterproofing when the first cover is combined with the second cover The glue is pressed and deformed by the first cover body and the second cover body to fill the first groove and the second groove. The electromagnetic flowmeter of claim 2, further comprising: a plurality of screwing elements respectively threading the first flange and the second flange, the measuring tube body being fastened to the first cover body and the Between the second covers. The electromagnetic flowmeter of claim 4, wherein the first flange and the second flange are respectively provided with a plurality of assembly holes, and the assembly holes are provided for fixing the screw components. The electromagnetic flowmeter of claim 5, wherein each of the screwing elements comprises a screw passing through each of the assembly holes and a nut screwed to the screw. The electromagnetic flowmeter of claim 2, further comprising a soft gel gasket or a soft strip respectively disposed on the first trench or the second trench. The electromagnetic flowmeter of claim 7, wherein the soft gel gasket has a cross-sectional shape of a rectangular sheet, and the flexible strip has a circular cross-sectional shape. The electromagnetic flowmeter of claim 1, wherein the first cover further comprises a first positioning convex portion and a first positioning concave portion symmetrically disposed with each other, and the second cover body comprises a first symmetrically disposed one. The second positioning protrusion is received in the second positioning concave portion, and the second positioning convex portion is accommodated in the second positioning convex portion. The first positioning recess. The electromagnetic flowmeter of claim 9, wherein the first positioning convex portion and the second positioning convex portion are a plurality of positioning posts, and the first positioning concave portion and the second positioning concave portion are a plurality of positioning holes. The electromagnetic flowmeter of claim 1, wherein the electromagnetic sensing module comprises two first magnetic conductive members, two exciting magnetic coils stacked on each of the first magnetic conductive members, and two bridges connecting the excitation coils. The second magnetically conductive member. The electromagnetic flowmeter of claim 1, further comprising a flange sleeved at the two ends of the measuring tube.