Electromagnetic flowmeter capable of measuring gas-containing liquid

Abstract

The invention relates to the technical field of electromagnetic flow meters, in particular to an electromagnetic flow meter capable of measuring gas-containing liquid, which comprises a main body ring, a sealing detection mechanism for detecting the flow of the liquid in the main body ring is arranged on the side surface of the main body ring, the sealing detection mechanism comprises a first fixing body, and a placing hole is formed in the side surface of the main body ring. The first fixing body is arranged in the placing hole in a sliding mode, the two detection needles are connected with a controller through electric wires, and the side face of the main body ring is connected with a gas detection mechanism for detecting gas in liquid. The device can accurately measure the flow of the liquid and the flow of the gas respectively, can ensure that the measured gas is in contact with the liquid again, can prevent the gas from causing errors to liquid measurement, and can reduce the loss of liquid conveying as the pressure intensity in the pipeline before and after measurement is consistent.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic flowmeters, and in particular to an electromagnetic flowmeter capable of measuring gas-containing liquids. Background Art

[0002] Liquid pipeline transportation is an efficient, economical and relatively safe mode of transportation. It is widely used in long-distance transportation of liquid goods such as petroleum, natural gas (when transported in liquid form), and chemical products. Liquid pipeline transportation has the advantages of convenient transportation and low loss. When the pipeline transports conductive and volatile liquids such as hydrochloric acid mixtures, in order to accurately detect the transportation speed and transportation flow of the liquid, it is necessary to detect the liquid in the pipeline through an electromagnetic flowmeter. When the hydrochloric acid mixture is transported, the liquid will evaporate a certain amount of gas, and these gases will remain in the pipeline in the form of bubbles.

[0003] In the prior art, an electromagnetic flowmeter is generally used to detect the flow rate of liquid in a pipeline. However, when the liquid in the pipeline contains bubbles, the electromagnetic flowmeter cannot accurately detect the flow rate of the liquid. The space occupied by the bubbles will also be detected as liquid, resulting in the liquid flow rate after detection being greater than the actual liquid flow rate, thereby reducing the accuracy of the detection. If the gas in the pipeline is discharged before detection, the bubbles in the pipeline will change. After the liquid is detected by the electromagnetic flowmeter, the liquid in the pipeline will evaporate the gas again, increasing the loss during liquid transportation. The existing electromagnetic flowmeter detects through the voltage difference between two detection needles to obtain the flow rate of the liquid. During use, impurities are easily accumulated on the surfaces of the two detection needles, resulting in poor detection accuracy. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose an electromagnetic flowmeter capable of measuring gas-containing liquid.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: an electromagnetic flowmeter capable of measuring gas-containing liquids, comprising a main body ring, a sealing detection mechanism for detecting the flow of liquid in the main body ring is arranged on the side of the main body ring, the sealing detection mechanism comprises a first fixed body, a placement hole is provided on the side of the main body ring, the first fixed body is slidably arranged in the placement hole, a controller is provided at the upper end of the first fixed body, a cavity is provided at the lower end of the first fixed body, two symmetrically arranged first electric telescopic rods are fixedly connected to the first fixed body in the cavity, the telescopic ends of the two first electric telescopic rods are respectively fixedly connected with detection needles, the two detection needles are connected to the controller through wires, a gas detection mechanism for detecting gas in the liquid is connected to the side of the main body ring, and connecting mechanisms for connecting to pipelines are provided at both ends of the main body ring.

[0006] Preferably, a fixing plate is fixedly connected to the lower end of the first fixing body, and two first through holes corresponding to the positions of the detection needles are penetrated through the end surface of the fixing plate, and sealing rings tightly fitting to the sides of the detection needles are fixedly connected to the fixing plate in the two first through holes.

[0007] Preferably, the two sealing rings are flexible structures, and the telescopic end of the first electric telescopic rod is tightly fitted with the upper end of the fixed plate.

[0008] Preferably, two first connecting plates are symmetrically connected to the side of the first fixing body, the upper end of the main body ring is fixedly connected to a second connecting plate corresponding to the position of the first connecting plate, and a threaded rod is threadedly fitted between the first connecting plate and the second connecting plate.

[0009] Preferably, the main body ring is provided with a first empty groove and a second empty groove on the side contacting the placement hole, respectively, and a plurality of equidistantly arranged first springs and second springs are fixedly connected in the first empty groove and the second empty groove, respectively, and the ends of a plurality of the first springs are fixedly connected with a first limit plate that slides with the first empty groove, and the ends of a plurality of the second springs are fixedly connected with a second limit plate that slides with the second empty groove.

[0010] Preferably, the gas detection mechanism includes a guide groove provided on the inner side of the main body ring, a fourth through hole communicating with the guide groove is provided on the outer surface of the main body ring, the guide groove is an arc surface structure, the main body ring is fixedly connected with a second fixed body in the fourth through hole, the second fixed body is a circular ring structure, a water-proof and breathable plate is fixedly connected to the interior of the second fixed body, a first gas pipe is fixedly connected to the upper end of the second fixed body, and a second through hole is provided running through the interior of the first fixed body.

[0011] Preferably, the other end of the first gas pipe is fixedly connected to the second through hole, the first fixed body is provided with a connecting rod at the upper end of the second through hole, and the lower end of the connecting rod is connected to a gas flow detector for detecting the gas flow in the second through hole.

[0012] Preferably, an air supply ring is fixedly connected to the side surface of the main body ring, a second air supply pipe is fixedly connected to the end of the second through hole, the other end of the second air supply pipe is communicated with the air supply ring, a third through hole is opened on the side surface of the main body ring, a one-way valve is fixedly connected to the main body ring in the third through hole, and a third air supply pipe is fixedly connected to the main body ring at the lower side of the third through hole, and the other end of the third air supply pipe is communicated with the air supply ring.

[0013] Preferably, the connection mechanism includes thread grooves symmetrically opened at both ends of the main ring, and connecting rings are respectively connected in the two thread grooves through threaded cooperation, and the ends of the two connecting rings are respectively fixedly connected with connecting flanges corresponding to the pipeline.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The gas drives the gas flow detector to rotate, thereby detecting the gas flow. Then the gas enters the gas transmission ring through the second gas transmission pipe, and finally the gas in the gas transmission ring re-enters the main ring through the third gas transmission pipe. At the same time, the liquid with gas removed passes through the main ring. At this time, the sealing detection mechanism on the side of the main ring detects the liquid and can accurately calculate the liquid flow. While accurately measuring the liquid and gas flow rates respectively, this device can ensure that the gas and liquid are in contact again after measurement, which can prevent the gas from causing errors in liquid measurement. The pressure in the pipeline is consistent before and after measurement, which can reduce the loss of liquid transportation;

[0016] 2. Many impurities will adhere to the surface of the detection needle. At this time, the first electric telescopic rod is quickly retracted, and the two first electric telescopic rods respectively drive the detection needle to pass through the inner side of the sealing ring. The inner side of the sealing ring will remove the impurities on the surface of the detection needle, thereby ensuring the sensitivity of the surface of the detection needle and improving the reliability of the device. When in use, the first spring and the second spring in the first empty groove and the second empty groove respectively drive the first limit plate and the second limit plate to squeeze toward the side of the first fixed body, thereby preventing the liquid and gas in the main ring from flowing out from the side of the placement hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 The present invention is a sectional view of the whole Figure 1 ;

[0019] Figure 3 The present invention is a sectional view of the whole Figure 2 ;

[0020] Figure 4 The present invention is a sectional view of the whole Figure 3 ;

[0021] Figure 5 For the present invention Figure 3 A magnified image of point A;

[0022] Figure 6 For the present invention Figure 3 A magnified view of point B;

[0023] Figure 7 For the present invention Figure 3 Enlarged view of point C;

[0024] Figure 8 For the present invention Figure 3 The enlarged view of point D;

[0025] Fig. 9 For the present invention Figure 3 The enlarged view of point E;

[0026] Fig.10 For the present invention Figure 4 Enlarged view of point F.

[0027] 1. Main body ring; 2. Sealing detection mechanism; 3. Gas detection mechanism; 4. Connecting mechanism; 11. Placement hole; 21. First fixed body; 22. Controller; 23. First electric telescopic rod; 24. Cavity; 25. Threaded rod; 26. First connecting plate; 27. Second connecting plate; 28. First slot; 29. ​​First spring; 210. First limit plate; 211. Detection needle; 212. First through hole; 213. Sealing ring; 214. Fixed plate; 215 , second empty slot; 216, second spring; 217, second limit plate; 31, first gas pipe; 32, second gas pipe; 33, gas ring; 34, third gas pipe; 35, second through hole; 36, connecting rod; 37, gas flow detector; 38, third through hole; 39, one-way valve; 310, guide groove; 311, fourth through hole; 312, second fixed body; 314, water-proof and breathable plate; 41, threaded groove; 42, connecting ring; 43, connecting flange. DETAILED DESCRIPTION

[0028] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0029] See also Figure 1 - Fig.10 An electromagnetic flowmeter capable of measuring gas-containing liquid comprises a main body ring 1, and a sealing detection mechanism 2 for detecting the flow of liquid in the main body ring 1 is arranged on the side of the main body ring 1.

[0030] The sealing detection mechanism 2 includes a first fixed body 21, a placement hole 11 is provided on the side of the main body ring 1, the first fixed body 21 is slidably set in the placement hole 11, a controller 22 is provided at the upper end of the first fixed body 21, a cavity 24 is provided at the lower end of the first fixed body 21, the first fixed body 21 is fixedly connected to two symmetrically arranged first electric telescopic rods 23 in the cavity 24, and the telescopic ends of the two first electric telescopic rods 23 are respectively fixedly connected with detection needles 211, and the two detection needles 211 are connected to the controller 22 through wires.

[0031] A fixing plate 214 is fixedly connected to the lower end of the first fixing body 21. Two first through holes 212 corresponding to the positions of the detection needle 211 are penetrated through the end surface of the fixing plate 214. Sealing rings 213 tightly fitting with the side faces of the detection needle 211 are fixedly connected to the fixing plate 214 in the two first through holes 212 respectively.

[0032] The two sealing rings 213 are flexible structures, and the telescopic end of the first electric telescopic rod 23 is tightly fitted with the upper end of the fixing plate 214 .

[0033] Two first connecting plates 26 are symmetrically connected to the side of the first fixing body 21 , and a second connecting plate 27 corresponding to the position of the first connecting plate 26 is fixedly connected to the upper end of the main body ring 1 , and a threaded rod 25 is threadedly engaged between the first connecting plate 26 and the second connecting plate 27 .

[0034] The main body ring 1 is provided with a first slot 28 and a second slot 215 on the side in contact with the placement hole 11, and a plurality of equidistantly arranged first springs 29 and second springs 216 are fixedly connected in the first slot 28 and the second slot 215, respectively. The ends of a plurality of the first springs 29 are fixedly connected with a first limit plate 210 that slides with the first slot 28, and the ends of a plurality of the second springs 216 are fixedly connected with a second limit plate 217 that slides with the second slot 215.

[0035] Specifically, many impurities may adhere to the surface of the detection needle 211. At this time, the first electric telescopic rod 23 is quickly retracted, and the two first electric telescopic rods 23 respectively drive the detection needle 211 to pass through the inner side of the sealing ring 213. The inner side of the sealing ring 213 removes the impurities on the surface of the detection needle 211, thereby ensuring the sensitivity of the surface of the detection needle 211.

[0036] A gas detection mechanism 3 for detecting gas in liquid is connected to the side surface of the main body ring 1 .

[0037] The gas detection mechanism 3 includes a guide groove 310 opened on the inner side of the main body ring 1, and the outer surface of the main body ring 1 is provided with a fourth through hole 311 connected to the guide groove 310. The guide groove 310 is an arc surface structure. The main body ring 1 is fixedly connected with a second fixed body 312 in the fourth through hole 311. The second fixed body 312 is a circular ring structure. The interior of the second fixed body 312 is fixedly connected with a waterproof and breathable plate 314. The upper end of the second fixed body 312 is fixedly connected with a first gas pipe 31. The interior of the first fixed body 21 is provided with a second through hole 35.

[0038] The other end of the first gas supply pipe 31 is fixedly connected to the second through hole 35 . The first fixed body 21 is provided with a connecting rod 36 at the upper end of the second through hole 35 . The lower end of the connecting rod 36 is connected to a gas flow detector 37 for detecting the gas flow in the second through hole 35 .

[0039] An air supply ring 33 is fixedly connected to the side of the main body ring 1, a second air supply pipe 32 is fixedly connected to the end of the second through hole 35, the other end of the second air supply pipe 32 is communicated with the air supply ring 33, a third through hole 38 is opened on the side of the main body ring 1, a one-way valve 39 is fixedly connected to the main body ring 1 in the third through hole 38, and a third air supply pipe 34 is fixedly connected to the lower side of the third through hole 38 of the main body ring 1, the other end of the third air supply pipe 34 is communicated with the air supply ring 33.

[0040] Specifically, the gas enters the first gas pipe 31 through the water-proof and breathable plate 314, which can prevent liquid from entering the first gas pipe 31. The gas entering the first gas pipe 31 enters the second through hole 35 in the first fixed body 21, and the gas drives the gas flow detector 37 to rotate, thereby detecting the gas flow.

[0041] Both ends of the main body ring 1 are provided with connection mechanisms 4 for connecting with pipelines.

[0042] The connection mechanism 4 includes thread grooves 41 symmetrically arranged at both ends of the main ring 1 , and connection rings 42 are respectively connected in the two thread grooves 41 through threaded cooperation, and the ends of the two connection rings 42 are respectively fixedly connected with connection flanges 43 corresponding to the pipeline.

[0043] Specifically, the connection ring 42 corresponding to the connection flange 43 of the pipeline is tightened in the threaded groove 41, and then the connection flanges 43 at both ends of the main body ring 1 are fixedly arranged on the ends of the pipeline respectively.

[0044] When in use, tighten the connecting ring 42 corresponding to the connecting flange 43 of the pipeline into the threaded groove 41, and then fix the connecting flanges 43 at both ends of the main ring 1 at the ends of the pipeline respectively. Then the liquid in the pipeline enters the main ring 1. When the liquid containing gas enters the main ring 1, the gas moves to the upper inner wall of the main ring 1 under the action of buoyancy, and then moves to the second fixed body 312 through the guidance of the guide groove 310. The gas enters the first gas pipe 31 through the waterproof and breathable plate 314. The waterproof and breathable plate 314 can prevent the liquid from entering the first gas pipe 31. The gas entering the first gas pipe 31 enters the second through hole 35 in the first fixed body 21, and the gas The body drives the gas flow detector 37 to rotate, thereby detecting the gas flow, and then the gas enters the gas ring 33 through the second gas pipe 32, and finally the gas in the gas ring 33 re-enters the main body ring 1 through the third gas pipe 34. At the same time, the liquid with gas removed passes through the main body ring 1. At this time, the sealing detection mechanism 2 on the side of the main body ring 1 detects the liquid through the detection needle 211, and the liquid flow can be accurately calculated. While accurately measuring the liquid and gas flows respectively, the device can ensure that the gas and liquid are in contact again after measurement, which can prevent the gas from causing errors in liquid measurement. The pressure in the pipeline is consistent before and after measurement, which can reduce the loss of liquid transportation.

[0045] When the two detection needles 211 detect the liquid, after a long period of detection, many impurities will adhere to the surface of the detection needle 211. At this time, the first electric telescopic rod 23 is quickly retracted, and the two first electric telescopic rods 23 respectively drive the detection needle 211 to pass through the inner side of the sealing ring 213. The inner side of the sealing ring 213 will remove the impurities on the surface of the detection needle 211, thereby ensuring the sensitivity of the surface of the detection needle 211 and improving the reliability of the device. When in use, the first spring 29 and the second spring 216 in the first empty groove 28 and the second empty groove 215 respectively drive the first limit plate 210 and the second limit plate 217 to squeeze toward the side of the first fixed body 21, thereby preventing the liquid and gas in the main ring 1 from flowing out from the side of the placement hole 11.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An electromagnetic flowmeter capable of measuring gas-containing liquids, comprising a main body ring (1), characterized in that: A sealing detection mechanism (2) for detecting the flow rate of liquid in the main body ring (1) is arranged on the side of the main body ring (1), and the sealing detection mechanism (2) comprises a first fixed body (21), a placement hole (11) is provided on the side of the main body ring (1), the first fixed body (21) is slidably arranged in the placement hole (11), a controller (22) is arranged at the upper end of the first fixed body (21), a cavity (24) is provided at the lower end of the first fixed body (21), two symmetrically arranged first electric telescopic rods (23) are fixedly connected to the first fixed body (21) in the cavity (24), the telescopic ends of the two first electric telescopic rods (23) are respectively fixedly connected to detection needles (211), and the two detection needles (211) are connected to the controller (22) through electric wires, a gas detection mechanism (3) for detecting gas in liquid is connected to the side of the main body ring (1), and connection mechanisms (4) for connecting to pipelines are arranged at both ends of the main body ring (1).

2. The electromagnetic flowmeter capable of measuring gas-containing liquid according to claim 1, characterized in that: A fixing plate (214) is fixedly connected to the lower end of the first fixing body (21), and two first through holes (212) corresponding to the positions of the detection needles (211) are formed through the end surface of the fixing plate (214), and sealing rings (213) that are tightly fitted to the side surfaces of the detection needles (211) are fixedly connected to the fixing plate (214) in the two first through holes (212).

3. The electromagnetic flowmeter capable of measuring gas-containing liquid according to claim 2, characterized in that: The two sealing rings (213) are flexible structures, and the telescopic end of the first electric telescopic rod (23) is tightly fitted to the upper end of the fixing plate (214).

4. The electromagnetic flowmeter capable of measuring gas-containing liquid according to claim 1, characterized in that: Two first connecting plates (26) are symmetrically connected to the side surface of the first fixed body (21); a second connecting plate (27) corresponding to the position of the first connecting plate (26) is fixedly connected to the upper end of the main body ring (1); a threaded rod (25) is threadedly engaged between the first connecting plate (26) and the second connecting plate (27).

5. The electromagnetic flowmeter capable of measuring gas-containing liquid according to claim 1, characterized in that: The main body ring (1) is provided with a first slot (28) and a second slot (215) on the side in contact with the placement hole (11); a plurality of first springs (29) and second springs (216) arranged equidistantly are fixedly connected to the first slot (28) and the second slot (215); the ends of the plurality of first springs (29) are fixedly connected to a first limit plate (210) slidably engaged with the first slot (28); the ends of the plurality of second springs (216) are fixedly connected to a second limit plate (217) slidably engaged with the second slot (215).

6. The electromagnetic flowmeter capable of measuring gas-containing liquid according to claim 1, characterized in that: The gas detection mechanism (3) comprises a guide groove (310) provided on the inner side of the main body ring (1); a fourth through hole (311) communicating with the guide groove (310) is provided on the outer surface of the main body ring (1); the guide groove (310) is an arc surface structure; a second fixing body (312) is fixedly connected to the main body ring (1) in the fourth through hole (311); the second fixing body (312) is a circular ring structure; a waterproof and breathable plate (314) is fixedly connected to the interior of the second fixing body (312); a first gas pipe (31) is fixedly connected to the upper end of the second fixing body (312); and a second through hole (35) is provided through the interior of the first fixing body (21).

7. The electromagnetic flowmeter capable of measuring gas-containing liquid according to claim 6, characterized in that: The other end of the first gas delivery pipe (31) is fixedly connected to the second through hole (35); the first fixed body (21) is provided with a connecting rod (36) at the upper end of the second through hole (35); the lower end of the connecting rod (36) is connected to a gas flow detector (37) for detecting the gas flow in the second through hole (35).

8. The electromagnetic flowmeter capable of measuring gas-containing liquid according to claim 6, characterized in that: A gas supply ring (33) is fixedly connected to the side surface of the main body ring (1); a second gas supply pipe (32) is fixedly connected to the end of the second through hole (35); the other end of the second gas supply pipe (32) is in communication with the gas supply ring (33); a third through hole (38) is provided on the side surface of the main body ring (1); a one-way valve (39) is fixedly connected to the main body ring (1) in the third through hole (38); a third gas supply pipe (34) is fixedly connected to the lower side of the third through hole (38); the other end of the third gas supply pipe (34) is in communication with the gas supply ring (33).

9. The electromagnetic flowmeter capable of measuring gas-containing liquid according to claim 1, characterized in that: The connection mechanism (4) comprises thread grooves (41) symmetrically arranged at both ends of the main body ring (1), the two thread grooves (41) are respectively connected to connection rings (42) by threaded engagement, and the ends of the two connection rings (42) are respectively fixedly connected to connection flanges (43) corresponding to the pipeline.

Images