An electromagnetic flow meter with protection function

Abstract

The present invention discloses an electromagnetic flowmeter with a protective function, and relates to the technical field of flowmeters. The present invention includes an electromagnetic flowmeter, and isolation protective covers are installed on the flanges at both ends and the surrounding side of the electromagnetic flowmeter; protective mesh covers are installed on the flanges at both ends of the electromagnetic flowmeter and outside the isolation protective cover; a constant temperature device is arranged between the inside of the isolation protective cover and the outer wall of the electromagnetic flowmeter; a semi-circular arc cover is installed on the outside of the isolation protective cover; the isolation protective cover includes two pairs of assembled side panels, a pair of circular arc covers, anti-rotation bolts, and sealing strips. The present invention forms a multi-layer protective structure by installing an isolation protective cover, a protective mesh cover, and a semi-circular arc cover on the outside of the electromagnetic flowmeter, which effectively avoids impact damage, uses the heating of the constant temperature device to offset the cooling of the outside of the electromagnetic flowmeter, and heats the space around the electromagnetic sensor in the electromagnetic flowmeter to offset the influence of the internal low-temperature fluid on the electromagnetic sensor, thereby ensuring that the electromagnetic sensor continues to operate efficiently under suitable temperature conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of flow meters, and in particular relates to an electromagnetic flow meter with a protection function. Background Art

[0002] Proper use of electromagnetic flowmeters in cold conditions is essential to the proper function and service life of the equipment. More critically, considering the stability of electromagnetic flowmeters in cold conditions is essential to on-site process accuracy. Low temperatures can adversely affect the tensile toughness of many commonly used materials in engineering. Generally, materials with high ductility and high strength have good tensile toughness. However, depending on the material, tensile toughness can be very sensitive to temperature changes. Cold weather can have a negative impact on the safe working ability of electromagnetic flowmeters. If the temperature drops below a certain point, the lining materials in these devices will undergo a transition from toughness to brittleness. The entire flowmeter needs to be protected by protective devices for continuous use in cold conditions to avoid damage after impact.

[0003] In addition to the severe cold problem outside, the cryogenic fluid transported in the pipeline must also be considered. Cryogenic fluids are key to various cryogenic application industries, including medical, large-scale frozen food processing and power transmission. Common cryogenic fluids used are liquid methane, liquid oxygen, liquid argon, liquid nitrogen, liquid air, etc. In order to use them accurately during use, these fluids must be handled and measured very carefully. The measurement accuracy of traditional electromagnetic flow is significantly reduced at low temperatures. In order to solve the above problems, an electromagnetic flow meter is needed that is suitable for severe cold weather conditions and cryogenic fluid transportation conditions. Summary of the invention

[0004] The purpose of the present invention is to provide an electromagnetic flow meter with a protective function. By installing an isolation protective cover, a protective mesh cover, and a semi-circular arc cover on the outside of the electromagnetic flow meter to form a multi-layer protective structure, impact damage and sunlight damage can be effectively avoided. The internal constant temperature device ensures that the sensor works in a suitable use environment, ensures the accuracy of the detection data, and solves the existing problems.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is an electromagnetic flow meter with a protective function, comprising an electromagnetic flow meter, wherein isolation protective covers are installed on the flanges at both ends and the surrounding sides of the electromagnetic flow meter; protective mesh covers are installed on the flanges at both ends of the electromagnetic flow meter and outside the isolation protective covers; a constant temperature device is arranged between the inside of the isolation protective cover and the outer wall of the electromagnetic flow meter; a semi-circular arc cover is installed on the outside of the isolation protective cover; the isolation protective cover comprises two pairs of assembled side panels, a pair of circular arc covers, anti-rotation bolts, and sealing strips; the assembled side panels are plug-in installed on the inner side of the end flange of the electromagnetic flow meter; the circular arc cover is installed on the outer arc surface of the assembled side panels by screws; the protective mesh cover comprises a pair of plug-in annular mesh covers.

[0007] Furthermore, the assembled side panel includes a semicircular plate with a radius greater than the diameter of the electromagnetic flow meter flange; three threaded columns are fixed on the outer side of the semicircular plate, and the threaded columns pass from the inner side of the electromagnetic flow meter flange to the outer side; two first semicircular holes symmetrically arranged are opened at the straight end of the semicircular plate, and the axes of the two first semicircular holes and the axes of the three threaded columns are on the same annular surface; a sealing groove cooperating with the sealing strip is opened at the center of the straight end of the semicircular plate; two U-shaped groove plates respectively located at the positions of the two first semicircular holes are fixed on the inner side of the semicircular plate, and the U-shaped groove plates cooperate with the anti-rotation bolts; the inner side of the semicircular plate is fixed with a coaxially arranged arc strip cooperating with the isolation protective cover; a semicircular groove hole cooperating with the electromagnetic flow meter is opened at the center of the semicircular plate.

[0008] Furthermore, the arc-shaped cover includes a semi-circular plate; a T-shaped slot is stamped from the outside to the inside at one end of the semi-circular plate; a second semi-circular hole is opened at the center of the end of the T-shaped slot to cooperate with the connecting column of the electromagnetic flow meter; a limiting slot is opened on the opposite side wall of the end of the T-shaped slot to cooperate with the anti-rotation bolt; and a third semi-circular hole is opened in the limiting slot to cooperate with the anti-rotation bolt.

[0009] Furthermore, the anti-rotation bolt includes a rectangular cap and a threaded rod.

[0010] Furthermore, the annular mesh cover comprises a first ring and a second ring coaxially arranged; a plurality of first anti-collision rods are fixed in an equiangular array between the outer arc surface of the first ring and the inner arc surface of the second ring; the first ring is clamped on the outer wall of the flange ring of the electromagnetic flow meter; the second anti-collision rods are fixed in an evenly distributed array on the end surface of the second ring; a coaxially arranged plug rod is fixed at one end of the second anti-collision rod of one of the annular mesh covers; and a socket which cooperates with the plug rod is provided at the other end of the second anti-collision rod of the other annular mesh cover.

[0011] Furthermore, the constant temperature device includes a temperature controller, a temperature sensor, a heating box, heat transfer oil, and a heating rod; the heating box is an arc-shaped structure and is fixed to the outer arc surface of the electromagnetic flow meter; the heat transfer oil is arranged in the heating box; the heating rod is inserted and installed on the heating box; and the temperature sensor is installed on the side wall of the heating box.

[0012] Furthermore, the cross section of the semicircular arc cover is a U-shaped structure; a sealing plate is provided at one end of the semicircular arc cover; and an L-shaped handle is provided on the outer side of the sealing plate.

[0013] Furthermore, a protective tube is provided on the outer side of two second anti-collision rods that are plugged in and matched with the two annular mesh covers.

[0014] Furthermore, a heat-insulating layer is provided on the inner wall of the semicircular arc plate.

[0015] The present invention has the following beneficial effects:

[0016] 1. The present invention installs two pairs of assembled side panels of the isolation protective cover on the flanges at both ends of the electromagnetic flow meter through insertion, and the sealing strips are used to seal the connection. A pair of arc-shaped covers are synchronously installed with anti-rotation bolts to fix the cover arranged on the peripheral side of the electromagnetic flow meter to expose the meter head, so as to form a protective cover; and a constant temperature device is installed in the cavity between the isolation protective cover and the electromagnetic flow meter, and the heating of the constant temperature device is used to offset the cooling of the outside of the electromagnetic flow meter, and the space around the electromagnetic sensor in the electromagnetic flow meter is heated to offset the influence of the internal low-temperature fluid on the electromagnetic sensor, so as to ensure that the electromagnetic sensor continues to operate efficiently under suitable temperature conditions, and improve the measurement accuracy of the electromagnetic flow meter.

[0017] 2. The present invention installs a protective mesh cover on the outermost side to cover the entire gridded cover, thereby effectively preventing heavy external impacts and completely protecting the electromagnetic flow meter.

[0018] 3. The present invention protects the meter head from wind and sun by installing a semicircular arc cover on the outside of the isolation protective cover, and is convenient for maintenance, and is easy and reliable to use.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1The present invention is a schematic structural diagram of an electromagnetic flow meter with a protective function.

[0022] Figure 2 for Figure 1 Schematic diagram of the structure after removing the electromagnetic flow meter and semi-circular arc cover.

[0023] Figure 3 It is a top view of the present invention.

[0024] Figure 4 for Figure 3 Cross-sectional view at AA in the middle.

[0025] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0026] Figure 6 for Figure 4 A partial enlarged view of point B in the middle.

[0027] Figure 7 This is a schematic diagram of the structure for assembling side panels.

[0028] Figure 8 It is a schematic diagram of the structure of the arc-shaped cover.

[0029] Fig. 9 It is a schematic diagram of the structure of the anti-rotation bolt.

[0030] Fig.10 It is a schematic diagram of the structure of the protective mesh cover.

[0031] Fig.11 It is a schematic diagram of the structure of the semicircular arc cover.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1-electromagnetic flow meter, 2-isolation protection cover, 3-protective mesh cover, 4-constant temperature device, 5-semicircular cover, 21-assembled side plate, 22-arc cover, 23-anti-rotation bolt, 24-sealing strip, 211-semicircular plate, 212-threaded column, 213-first semicircular hole, 214-sealing groove, 215-U-shaped groove plate, 216-arc plate strip, 217-semicircular groove hole, 221-semicircular plate, 222-T-shaped groove, 223-second Semicircular hole, 224-limiting groove, 225-third semicircular hole, 231-rectangular cap, 232-threaded rod, 31-annular mesh cover, 311-first ring, 312-second ring, 313-first anti-collision rod, 314-second anti-collision rod, 315-insertion rod, 316-jack, 41-temperature controller, 42-temperature sensor, 43-heating box, 44-heat transfer oil, 45-heating rod, 51-sealing plate, 52-L-shaped handle. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-11 As shown, the present invention is an electromagnetic flowmeter with a protective function, comprising an electromagnetic flowmeter 1, wherein isolation protective covers 2 are installed on the flanges at both ends and the surrounding side of the electromagnetic flowmeter 1; protective mesh covers 3 are installed on the flanges at both ends of the electromagnetic flowmeter 1 and outside the isolation protective cover 2; a constant temperature device 4 is arranged between the inside of the isolation protective cover 2 and the outer wall of the electromagnetic flowmeter 1, and the heating of the constant temperature device 4 is used to offset the cooling of the outside of the electromagnetic flowmeter 1, and the space around the electromagnetic sensor in the electromagnetic flowmeter 1 is heated to ensure that the electromagnetic sensor continues to operate efficiently under suitable temperature conditions; a semi-circular arc cover 5 is installed on the outside of the isolation protective cover 2; the isolation protective cover 2 includes two pairs of assembled side panels 21, a pair of arc-shaped covers 22, anti-rotation bolts 23, and sealing strips 24; the assembled side panels 21 are plugged and installed on the inner side of the end flange of the electromagnetic flowmeter 1; the arc-shaped cover 22 is installed on the outer arc surface of the assembled side panels 21 by screws; the protective mesh cover 3 includes a pair of plug-in annular mesh covers 31.

[0036] Among them Figure 7 As shown, the assembled side plate 21 includes a semicircular plate 211 with a radius larger than the diameter of the flange of the electromagnetic flowmeter 1; three threaded columns 212 are fixed on the outer side of the semicircular plate 211, and the threaded columns 212 pass from the inner side of the flange of the electromagnetic flowmeter 1 to the outer side; two first semicircular holes 213 symmetrically arranged are provided at the straight end of the semicircular plate 211, and the axes of the two first semicircular holes 213 and the axes of the three threaded columns 212 are on the same annular surface; a sealing groove 214 cooperating with the sealing strip 24 is provided at the center of the straight end of the semicircular plate 211; two U-shaped groove plates 215 respectively located at the positions of the two first semicircular holes 213 are fixed on the inner side of the semicircular plate 211, and the U-shaped groove plates 215 cooperate with the anti-rotation bolts 23; a coaxially arranged arc strip 216 cooperating with the isolation protective cover 2 is fixed on the inner side of the semicircular plate 211; a semicircular groove hole 217 cooperating with the electromagnetic flowmeter 1 is provided at the center of the semicircular plate 211.

[0037] Among them Figure 8As shown, the arc-shaped cover 22 includes a semi-circular plate 221; a T-shaped slot 222 is stamped from the outside to the inside at one end of the semi-circular plate 221; a second semi-circular hole 223 is provided at the center of the end of the T-shaped slot 222 to cooperate with the connecting column of the electromagnetic flow meter 1; a limiting slot 224 is provided on the opposite side wall of the end of the T-shaped slot 222 to cooperate with the anti-rotation bolt 23; and a third semi-circular hole 225 is provided in the limiting slot 224 to cooperate with the anti-rotation bolt 23.

[0038] Among them Fig. 9 As shown, the anti-rotation bolt 23 includes a rectangular cap 231 and a threaded rod 232. The rectangular cap 231 cooperates with the matching rectangular slot to effectively prevent the threaded rod 232 from rotating when the external mounting nut is tightened, thereby facilitating subsequent installation work.

[0039] Among them Fig.10 As shown, the annular mesh cover 31 comprises a first ring 311 and a second ring 312 which are coaxially arranged; a plurality of first anti-collision rods 313 are fixed in an array at equal angles between the outer arc surface of the first ring 311 and the inner arc surface of the second ring 312; the first ring 311 is clamped on the outer wall of the flange ring of the electromagnetic flow meter 1; second anti-collision rods 314 are fixed in an array evenly distributed on the end surface of the second ring 312; a coaxially arranged plug rod 315 is fixed at the end of the second anti-collision rod 314 of one annular mesh cover 31; a plug hole 316 which cooperates with the plug rod 315 is provided at the end of the second anti-collision rod 314 of the other annular mesh cover 31.

[0040] Among them Figure 4 and Figure 6 As shown, the constant temperature device 4 includes a temperature controller 41, a temperature sensor 42, a heating box 43, heat transfer oil 44, and a heating rod 45; the heating box 43 is an arc-shaped structure and is fixed on the outer arc surface of the electromagnetic flowmeter 1; the heat transfer oil 44 is arranged in the heating box 43; the heating rod 45 is inserted and installed on the heating box 43; the temperature sensor 42 is installed on the side wall of the heating box 43, and the power supply line of the constant temperature device 4 is wrapped with a shielding layer and synchronously arranged with the wiring of the electromagnetic flowmeter 1 or output separately through the side wall of one of the semicircular arc plates 221.

[0041] Among them Fig.11 As shown, the cross section of the semicircular cover 5 is a U-shaped structure; a sealing plate 51 is provided at one end of the semicircular cover 5; and an L-shaped handle 52 is provided on the outer side of the sealing plate 51. The inner arc surface of the semicircular cover 5 cooperates with the outer arc surface of the arc-shaped cover 22, with a large contact area and a large relative friction force, and can stably stop at the pulled position. When the cover is arranged above the T-shaped slot 222 provided on the arc-shaped cover 22, the meter head can be effectively protected.

[0042] The two annular mesh covers 31 are provided with a protective tube on the outside of the two second anti-collision rods 314 that are plugged and matched with each other. After the protective tube is provided, the rust at the connection point can be reduced, and the impact wear can be reduced.

[0043] The inner wall of the semicircular arc plate 221 is provided with a heat-insulating layer, which can reduce internal heat loss and heat exchange with the outside, thereby reducing energy consumption.

[0044] The specific application of the electromagnetic flowmeter with protection function of the present invention is as follows: two pairs of assembled side plates 21 of the isolation protection cover 2 are inserted and installed on the flanges at both ends of the electromagnetic flowmeter 1, the sealing strip 24 is used to seal the connection, a pair of arc-shaped covers 22 and anti-rotation bolts 23 are installed synchronously, and the fixed cover is arranged on the peripheral side of the electromagnetic flowmeter 1 to leak the meter head, forming a protective cover; a constant temperature device 4 is installed in the cavity between the isolation protection cover 2 and the electromagnetic flowmeter 1, and the space around the electromagnetic sensor in the electromagnetic flowmeter 1 is heated to offset the influence of the internal low-temperature fluid on the electromagnetic sensor, to ensure that the electromagnetic sensor continues to operate efficiently under suitable temperature conditions, and to provide a good use environment for the electromagnetic sensor; a protective mesh cover 3 is installed on the outermost side to cover the whole gridded cover, effectively preventing heavy external impact, and completely protecting the electromagnetic flowmeter 1. A semi-circular arc cover 5 is installed on the outside of the isolation protection cover 2 to protect the meter head from wind and sun, and to facilitate maintenance, which is convenient and reliable to use.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An electromagnetic flow meter with a protective function, comprising an electromagnetic flow meter (1), characterized in that: The electromagnetic flow meter (1) is provided with isolation protective covers (2) installed on the flanges at both ends and the surrounding side; Protective mesh covers (3) are installed on the flanges at both ends of the electromagnetic flow meter (1) and outside the isolation protective cover (2); A constant temperature device (4) is provided between the interior of the isolation protective cover (2) and the outer wall of the electromagnetic flow meter (1); A semicircular arc cover (5) is installed on the outer side of the isolation protection cover (2); The isolation protection cover (2) comprises two pairs of assembled side panels (21), a pair of arc-shaped covers (22), anti-rotation bolts (23), and a sealing strip (24); The assembled side plate (21) is plugged and installed on the inner side of the end flange of the electromagnetic flow meter (1); The arc-shaped cover (22) is mounted on the outer arc surface of the assembled side plate (21) by means of screws; The protective mesh cover (3) comprises a pair of plug-fitting annular mesh covers (31); The assembled side plate (21) comprises a semicircular plate (211) having a radius greater than the diameter of the flange of the electromagnetic flow meter (1); three threaded columns (212) are fixed to the outer side of the semicircular plate (211), and the threaded columns (212) pass from the inner side of the flange of the electromagnetic flow meter (1) to the outer side; two first semicircular holes (213) symmetrically arranged are formed at the straight end of the semicircular plate (211), and the axes of the two first semicircular holes (213) and the axes of the three threaded columns (212) are on the same annular surface; A sealing groove (214) cooperating with the sealing strip (24) is provided at the center of the semicircular plate (211); two U-shaped groove plates (215) respectively located at the positions of the two first semicircular holes (213) are fixed on the inner side surface of the semicircular plate (211), and the U-shaped groove plates (215) cooperate with the anti-rotation bolts (23); a circular arc strip (216) coaxially arranged and cooperating with the isolation protective cover (2) is fixed on the inner side surface of the semicircular plate (211); a semicircular groove hole (217) cooperating with the electromagnetic flow meter (1) is provided at the center of the semicircular plate (211); The arc-shaped cover (22) comprises a semi-circular plate (221); a T-shaped slot (222) is formed by stamping one end of the semi-circular plate (221) from the outside to the inside; a second semi-circular hole (223) cooperating with the connecting column of the electromagnetic flow meter (1) is provided at the center of the end of the T-shaped slot (222); a limiting slot (224) cooperating with the anti-rotation bolt (23) is provided on the opposite side wall of the end of the T-shaped slot (222); and a third semi-circular hole (225) cooperating with the anti-rotation bolt (23) is provided in the limiting slot (224); The annular mesh cover (31) comprises a first ring (311) and a second ring (312) which are coaxially arranged; a plurality of first anti-collision rods (313) are fixed in an equiangular array between the outer arc surface of the first ring (311) and the inner arc surface of the second ring (312); the first ring (311) is clamped on the outer wall of the flange ring of the electromagnetic flow meter (1); second anti-collision rods (314) are fixed in an evenly distributed array on the end surface of the second ring (312); a coaxially arranged plug rod (315) is fixed at the end of the second anti-collision rod (314) of one of the annular mesh covers (31); and a plug hole (316) which cooperates with the plug rod (315) is provided at the end of the second anti-collision rod (314) of the other annular mesh cover (31); The constant temperature device (4) comprises a temperature controller (41), a temperature sensor (42), a heating box (43), heat transfer oil (44), and a heating rod (45); the heating box (43) is an arc-shaped structure and is fixed to the outer arc surface of the electromagnetic flow meter (1); the heat transfer oil (44) is arranged in the heating box (43); the heating rod (45) is installed in the heating box (43); and the temperature sensor (42) is installed on the side wall of the heating box (43).

2. The electromagnetic flowmeter with protection function according to claim 1, characterized in that: The anti-rotation bolt (23) comprises a rectangular cap (231) and a threaded rod (232).

3. The electromagnetic flow meter with protection function according to claim 1, characterized in that: The cross section of the semicircular arc cover (5) is a U-shaped structure; a sealing plate (51) is provided at one end of the semicircular arc cover (5); and an L-shaped handle (52) is provided on the outer side surface of the sealing plate (51).

4. The electromagnetic flow meter with protection function according to claim 1, characterized in that: A protective tube is sleeved on the outside of two second anti-collision rods (314) that are plugged and matched with the two annular mesh covers (31).

5. The electromagnetic flow meter with protection function according to claim 3, characterized in that: The inner wall of the semicircular arc plate (221) is provided with a heat-insulating layer.

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