A pipe turbine flowmeter

Abstract

The utility model provides a pipeline turbine flowmeter, including the pipe body, both sides of pipe body are equipped with the connecting sleeve, be equipped with the turbine mechanism in the pipe body, the fluid of turbine mechanism is driven to rotate by pipe body, the outside of pipe body is equipped with monitoring mechanism for monitoring the rotating speed of turbine mechanism, calculates the flow according to the rotating speed, be equipped with the thread in the connecting sleeve, one connecting sleeve is equipped with the connecting pipe, is equipped with the thread outside the connecting pipe. The utility model discloses the rotation of turbine mechanism under the push of liquefied air, cooperate hall sensor and turbine mechanism, can accurately measure the flow of ultralow temperature liquefied air, satisfy the monitoring demand of ultralow temperature liquefied air rock breaking technology, through the injection and replacement lubricant of lubricating mechanism, effectively reduced the wear and tear of bearing under the ultralow temperature environment, greatly prolonged the service life of bearing, and then improved the reliability and stability of flowmeter.

Description

Technical Field

[0001] This utility model relates to the field of pipeline flow monitoring technology, specifically to a pipeline turbine flow meter. Background Technology

[0002] Cryogenic liquefied air energy rock breaking technology is a novel, green rock breaking method based on the energy release from the phase change of liquid air. It achieves rock breaking through the synergistic effect of cryogenic physical effects and mechanical energy. Its core principle is to utilize the property that liquid air (temperature approximately -196℃) expands in volume by about 700 times when it vaporizes at room temperature, generating a high-pressure shock wave that acts on the rock structure. At the same time, the cryogenic effect increases the brittleness of the rock, thereby achieving efficient rock breaking.

[0003] In the actual operation of cryogenic liquefied air rock breaking technology, liquefied air needs to be sent to the rock breaking location through pipelines, which requires controlling the flow rate through valves and monitoring the flow rate through flow meters.

[0004] However, existing flow meters not only have limited accuracy in use, but also experience increased wear on internal structures such as bearings due to the low-temperature environment, resulting in a shorter service life. Utility Model Content

[0005] The main purpose of this invention is to provide a pipeline turbine flow meter that solves the problem of the short service life of existing flow meters when used in low-temperature environments.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A pipeline turbine flow meter includes a pipe body, with connecting sleeves provided on both sides of the pipe body;

[0008] The pipe is equipped with a turbine mechanism, which is driven to rotate by the fluid passing through the pipe.

[0009] A monitoring mechanism is installed on the outside of the pipe to monitor the rotational speed of the turbine mechanism and calculate the flow rate based on the rotational speed.

[0010] In the preferred embodiment, the connecting sleeve has internal threads;

[0011] One of the connecting sleeves is equipped with a connecting tube, and the connecting tube is threaded.

[0012] In the preferred embodiment, two fixed shafts are provided inside the tube, and several support plates are provided between the outer periphery of the fixed shafts and the inner wall of the tube.

[0013] The centerline of the fixed shaft coincides with the centerline of the tube body;

[0014] The turbine mechanism is located between two fixed shafts.

[0015] In the preferred embodiment, both sides of the support plate are chamfered, and the ends of the two fixed axes that are far apart from each other are conical surfaces.

[0016] In a preferred embodiment, the turbine mechanism includes a rotating column located between two fixed shafts;

[0017] The rotating column has several blades arranged in a ring around its outer periphery;

[0018] Both ends of the rotating column are equipped with rotating shafts, which are rotatably mounted inside the fixed shaft;

[0019] The blades are equipped with magnets at their tips.

[0020] In the preferred embodiment, the monitoring mechanism includes a fixed shell disposed on the periphery of the pipe body;

[0021] A display screen is located on the side of the fixed shell away from the tube body;

[0022] The control unit is located inside the fixed housing and is electrically connected to the display screen;

[0023] A sensor is installed inside the fixed housing; the sensor is used to detect the magnet.

[0024] The sensor is electrically connected to the control unit;

[0025] A baffle is installed inside the tube, and the baffle is close to the sensor.

[0026] In the preferred embodiment, the rotating shaft is provided with a first bearing and a second bearing;

[0027] The first bearing and the second bearing are located inside the fixed shaft, and there is a gap between the first bearing and the second bearing.

[0028] In a preferred embodiment, the tube body is equipped with a lubrication mechanism for providing lubricant to the first and second bearings.

[0029] In a preferred embodiment, the lubrication mechanism includes an oil inlet hole in one of the support plates and an oil outlet hole in the other support plate.

[0030] One end of the oil inlet and oil outlet is connected to the interior of the fixed shaft, and the connection position is located between the first bearing and the second bearing; the other end extends to the outside of the tube body.

[0031] An inlet pipe is provided outside the main pipe, and a connecting hole is provided inside the inlet pipe, which is connected to the oil inlet hole;

[0032] A sealing plug is provided inside the connection hole, and a handle is provided outside the sealing plug.

[0033] In the preferred embodiment, an oil outlet pipe is provided at the bottom of the pipe body, and the oil outlet pipe is connected to the oil outlet hole;

[0034] The oil outlet pipe has an external threaded connection with a sealing sleeve. Inside the sealing sleeve is a plug-in post that is inserted into the inside of the oil outlet pipe and is equipped with a sealing ring.

[0035] This utility model provides a pipeline turbine flow meter, which, by adopting the above solution, has the following beneficial effects:

[0036] By rotating the turbine mechanism under the drive of liquefied air, and in conjunction with the Hall sensor and the turbine mechanism, the flow rate of cryogenic liquefied air can be accurately measured, meeting the monitoring needs of cryogenic liquefied air rock-breaking technology.

[0037] By injecting and replacing cryogenic lubricant through the lubrication mechanism, the wear of the bearings in cryogenic environments is effectively reduced, greatly extending the service life of the bearings and thus improving the reliability and stability of the flow meter. Attached Figure Description

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0039] Figure 1 This is a schematic diagram of the structure of this utility model;

[0040] Figure 2 This is a cross-sectional view of the present invention;

[0041] Figure 3 yes Figure 2 Sectional view at point AA;

[0042] Figure 4 This is a schematic diagram of the turbine mechanism;

[0043] Figure 5 This is a schematic diagram of the structure at the oil outlet pipe.

[0044] In the picture:

[0045] Pipe body 1, monitoring mechanism 2, fixed shell 201, display screen 202, control unit 203, sensor 204, partition 205, connecting sleeve 301, connecting pipe 302, support plate 401, fixed shaft 402, turbine mechanism 5, rotating column 501, blade 502, magnet 503, rotating shaft 504, first bearing 505, second bearing 506, lubrication mechanism 6, oil inlet 601, connecting hole 602, inlet pipe 603, handle 604, sealing plug 605, oil outlet 606, oil outlet pipe 607, sealing sleeve 608, plug post 609. Detailed Implementation

[0046] Example 1:

[0047] like Figure 1 , 2As shown in Figures 3, 4, and 5, a pipeline turbine flow meter includes a pipe body 1. The pipe body 1 is made of low-temperature stainless steel, preferably 0Cr18Ni9Ti material, capable of withstanding ultra-low temperature environments of -196℃ during hydraulic air transmission, and possessing good corrosion resistance. Connecting sleeves 301 are provided on both sides of the pipe body 1, with internal threads for connection to pipelines transporting liquefied air. Preferably, one of the connecting sleeves 301 has a connecting pipe 302 with external threads, facilitating connection between pipes of different diameters.

[0048] The tube body 1 contains two fixed shafts 402, which are made of high-strength, low-temperature resistant alloy material. Several support plates 401, also made of low-temperature stainless steel, are positioned between the outer circumference of the fixed shafts 402 and the inner wall of the tube body 1, forming a stable support structure. The centerline of the fixed shafts 402 coincides with the centerline of the tube body 1, ensuring the stable rotation of the turbine mechanism 5. Both sides of the support plates 401 are chamfered, and the ends of the two fixed shafts 402 that are furthest from each other are tapered surfaces, reducing the resistance of liquefied air flowing within the tube body 1 and preventing turbulence from affecting measurement accuracy.

[0049] The turbine mechanism 5 is located between two fixed shafts 402 and includes a rotating column 501. The rotating column 501 is made of a low-temperature resistant alloy material, and several blades 502 are arranged in a ring around its outer periphery. The blades 502 are integrally formed with the rotating column 501, and the angle of the blades 502 is optimized so that they can rotate efficiently under the propulsion of liquefied air. Both ends of the rotating column 501 are provided with rotating shafts 504, which are rotatably mounted inside the fixed shafts 402. The ends of the blades 502 are provided with magnets 503, which are low-temperature resistant neodymium iron boron magnets that can maintain stable magnetism even in ultra-low temperature environments.

[0050] The rotating shaft 504 is equipped with a first bearing 505 and a second bearing 506. The first bearing 505 and the second bearing 506 are preferably low-temperature resistant ceramic bearings, which have excellent wear resistance and low-temperature resistance, and can work normally in environments below -200℃. The first bearing 505 and the second bearing 506 are located inside the fixed shaft 402, and there is a gap between the first bearing 505 and the second bearing 506 to facilitate the flow and distribution of lubricant.

[0051] The first bearing 505 and the second bearing 506 are preferably waterproof bearings.

[0052] The tube body 1 is equipped with a lubrication mechanism 6, which is used to provide lubricant to the first bearing 505 and the second bearing 506. The lubricant is a special grease-free ultra-low temperature lubricant that can maintain good lubrication performance in an environment of -196℃. It is preferably a perfluoropolyether lubricant or a polytetrafluoroethylene (PTFE) based lubricant.

[0053] The lubrication mechanism 6 includes an oil inlet 601 located in one of the support plates 401 and an oil outlet 606 located in the other support plate 401. One end of the oil inlet 601 and the oil outlet 606 are connected to the interior of the fixed shaft 402, and the connection position is located between the first bearing 505 and the second bearing 506, while the other end extends to the outside of the tube body 1.

[0054] The pipe body 1 is provided with an inlet pipe 603, which is welded and fixed to the pipe body 1. The inlet pipe 603 is provided with a connecting hole 602, which communicates with the oil inlet hole 601. The connecting hole 602 is provided with a sealing plug 605, which is made of low-temperature resistant rubber and has a handle 604 on the outside to facilitate the insertion and removal of the sealing plug 605, thereby achieving the sealing and opening of the oil inlet hole 601.

[0055] The bottom of the pipe body 1 is provided with an oil outlet pipe 607, which is connected to the oil outlet hole 606. The oil outlet pipe 607 is externally threaded with a sealing sleeve 608. The sealing sleeve 608 is provided with a plug post 609, which is inserted into the inside of the oil outlet pipe 607 and is provided with a sealing ring. The sealing ring is made of low temperature resistant material to ensure the sealing performance of the oil outlet pipe 607 and prevent lubricant leakage and liquefied air from entering.

[0056] A monitoring mechanism 2 is provided on the outer side of the pipe body 1 to monitor the rotational speed of the turbine mechanism 5 and calculate the flow rate based on the rotational speed. The monitoring mechanism 2 includes a fixed shell 201 located on the circumference of the pipe body 1. The fixed shell 201 is made of heat-insulating material and has an internal insulation layer to reduce the influence of the external environment on the internal components. A display screen 202 is provided on the side of the fixed shell 201 away from the pipe body 1 to display the measured flow rate data. A control unit 203 is provided inside the fixed shell 201. The control unit 203 is a low-temperature resistant microcontroller and is electrically connected to the display screen 202. A sensor 204 is provided inside the fixed shell 201. The sensor 204 is a Hall sensor, preferably an AH3144 Hall sensor, used to detect the rotation of the magnet 503, thereby obtaining the rotational speed of the turbine mechanism 5. The sensor 204 is electrically connected to the control unit 203. A partition 205 is provided inside the pipe body 1, close to the sensor 204.

[0057] In use, the pipe body 1 is connected to the pipeline for conveying liquefied air through the connecting sleeves 301 on both sides. Depending on the pipe diameter, it can be adapted and connected through the connecting pipe 302 to ensure a tight connection and no leakage.

[0058] Before putting the flow meter into use, remove the sealing plug 605 from the inlet pipe 603, and inject an appropriate amount of lubricant into the fixed shaft 402 through the connecting hole 602 and the oil inlet hole 601. The lubricant lubricates the two bearings through the gap between the first bearing 505 and the second bearing 506. After lubrication, insert the sealing plug 605 back into the connecting hole 602 to seal. Regularly check the lubricant level. When the lubricant needs to be replaced, unscrew the sealing sleeve 608 on the oil outlet pipe 607, release the old lubricant, inject new lubricant, and finally retighten the sealing sleeve 608.

[0059] When liquefied air flows within pipe 1, it drives the blades 502 of turbine mechanism 5 to rotate, causing the rotating column 501 and shaft 504 to rotate. The magnet 503 at the end of the blade 502 rotates accordingly. Sensor 204 detects the rotation signal of magnet 503 and transmits it to control unit 203. The faster the blade 502 rotates, the higher the frequency at which sensor 204 detects magnet 503. Control unit 203 calculates the liquefied air velocity and flow rate based on the detected frequency and displays it on display screen 202. The specific calculation formula is obtained based on actual production conditions. Before use, the detection frequency of sensor 204 at different flow rates is obtained through experiments. During actual detection, the flow rate is deduced from the detection rate, and then the flow rate is obtained by combining the transmission time. This process can be obtained and completed using existing technology, and therefore will not be elaborated further.

[0060] The flow meter in this application is mainly used for compressed air transmission, but is not limited to compressed air, and therefore should not be construed as a limitation of this application.

[0061] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A pipeline turbine flow meter, characterized in that: Includes a pipe body (1), and connecting sleeves (301) are provided on both sides of the pipe body (1). The pipe body (1) is equipped with a turbine mechanism (5), which is driven to rotate by the fluid passing through the pipe body (1); A monitoring mechanism (2) is provided on the outside of the pipe body (1) to monitor the rotational speed of the turbine mechanism (5) and calculate the flow rate based on the rotational speed.

2. The pipeline turbine flow meter according to claim 1, characterized in that: The connecting sleeve (301) has internal threads; One of the connecting sleeves (301) is provided with a connecting tube (302), and the connecting tube (302) is threaded.

3. The pipeline turbine flow meter according to claim 1, characterized in that: The tube (1) is provided with two fixed shafts (402), and a number of support plates (401) are provided between the outer periphery of the fixed shafts (402) and the inner wall of the tube (1). The centerline of the fixed shaft (402) coincides with the centerline of the tube body (1); The turbine mechanism (5) is located between two fixed shafts (402).

4. A pipeline turbine flow meter according to claim 3, characterized in that: Both sides of the support plate (401) are chamfered, and the ends of the two fixed shafts (402) that are far apart from each other are conical surfaces.

5. A pipeline turbine flow meter according to claim 3, characterized in that: The turbine mechanism (5) includes a rotating column (501) located between two fixed shafts (402); The rotating column (501) has several blades (502) arranged in a ring around its outer periphery; Both ends of the rotating column (501) are provided with rotating shafts (504), and the rotating shafts (504) are rotatably mounted inside the fixed shaft (402); A magnet (503) is provided at the end of the blade (502).

6. A pipeline turbine flow meter according to claim 5, characterized in that: The monitoring mechanism (2) includes a fixed shell (201) located on the periphery of the pipe body (1); A display screen (202) is provided on the side of the fixed shell (201) away from the tube body (1); A control unit (203) is provided inside the fixed housing (201), and the control unit (203) is electrically connected to the display screen (202); A sensor (204) is provided inside the fixed housing (201), and the sensor (204) is used to detect the magnet (503); The sensor (204) is electrically connected to the control unit (203); The tube body (1) is equipped with a partition (205) and the partition (205) is close to the sensor (204).

7. A pipeline turbine flow meter according to claim 5, characterized in that: The rotating shaft (504) is provided with a first bearing (505) and a second bearing (506); The first bearing (505) and the second bearing (506) are located inside the fixed shaft (402), and there is a gap between the first bearing (505) and the second bearing (506).

8. A pipeline turbine flow meter according to claim 7, characterized in that: The tube body (1) is provided with a lubrication mechanism (6) for providing lubricant to the first bearing (505) and the second bearing (506).

9. A pipeline turbine flow meter according to claim 8, characterized in that: The lubrication mechanism (6) includes an oil inlet (601) provided in one of the support plates (401) and an oil outlet (606) provided in the other support plate (401). One end of the oil inlet (601) and the oil outlet (606) are connected to the interior of the fixed shaft (402), and the connection position is located between the first bearing (505) and the second bearing (506), while the other end extends to the outside of the tube body (1); The pipe body (1) is provided with an inlet pipe (603) on the outside, and a connecting hole (602) is provided inside the inlet pipe (603), which is connected to the oil inlet hole (601); A sealing plug (605) is provided inside the connection hole (602), and a handle (604) is provided outside the sealing plug (605).

10. A pipeline turbine flow meter according to claim 9, characterized in that: The bottom of the pipe body (1) is provided with an oil outlet pipe (607), which is connected to the oil outlet hole (606); The oil outlet pipe (607) is externally threaded with a sealing sleeve (608). The sealing sleeve (608) is provided with a plug post (609). The plug post (609) is inserted into the inside of the oil outlet pipe (607) and is provided with a sealing ring.

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