A detection device and method for detecting gas-liquid two-phase flow rate

Abstract

The invention relates to the technical field of flow detection, and discloses a detection device and method for detecting the flow of a gas-liquid two-phase flow, comprising a detection mechanism, which also comprises a delivery pipe, wherein a rectangular block is fixedly connected to the outer wall of the delivery pipe, and a rectangular groove is provided at the bottom of the rectangular block; when the flow rate of the fluid is too large, the slide plate will rotate rapidly, and the centrifugal force generated will force the spring telescopic rod 1 to drive the slide plate to expand outward, and the slide plate will continue to rotate after expanding outward to contact the tooth plate, thereby forcing the tooth plate to drive the strip block to slide to the left, and drive the special-shaped plate to slide in the slide groove through the V-shaped block, at which time the spring 2 is in a pulled state, and when the groove on the special-shaped plate coincides with the slide groove, the baffle is no longer blocked by the special-shaped plate, and the pulling force on the spring 2 disappears, thereby driving the baffle to move downward, and after the baffle moves downward, it slides downward in the movable groove 2, and after the baffle slides downward, it contacts the inner wall of the delivery pipe, thereby preventing the fluid from continuing to be transported through the delivery pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of flow detection, and in particular to a detection device and method for detecting the flow of a gas-liquid two-phase flow. Background Art

[0002] Gas-liquid two-phase flow pipes are widely present in industrial processes. When a gas-liquid mixture flows in a pipeline, the gas and liquid phases present different distribution forms in the pipeline, namely flow patterns. Accurate identification of the gas-liquid two-phase flow pattern not only helps to accurately characterize the flow characteristics and heat and mass transfer characteristics of the fluid in the pipeline, but also helps to predict the flow state in the undetected area of ​​the pipeline, thereby achieving the purpose of reasonably setting the transportation parameters, effectively formulating the pipeline cleaning system, and extending the service life of the pipeline. Therefore, the identification of the flow pattern of gas-liquid two-phase flow has always been a hot topic in the field of oil and gas transmission pipelines.

[0003] In an oil pipeline, when the fluid flows too fast, the flow rate of the fluid will increase. Too fast a flow rate will cause the pressure in the pipeline to rise sharply, causing huge pressure on the connection parts and weak links of the pipeline, which can easily cause the pipeline to rupture and increase the risk of leakage. To address the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a detection device for detecting the flow rate of a gas-liquid two-phase flow, comprising a detection mechanism, the detection mechanism also comprising a delivery pipe, a rectangular block is fixedly connected to the outer wall of the delivery pipe, and a rectangular groove is provided at the bottom of the rectangular block;

[0005] The blocking mechanism comprises a support frame fixedly connected to the top of the rectangular block, a rotating rod rotatably connected to the side of the support frame away from the rectangular block, and a limit plate fixedly connected to the outer wall of the rotating rod;

[0006] The sealing mechanism comprises a fixed block fixedly connected to the top of the conveying pipe, a movable groove 2 is arranged at the bottom of the fixed block, and a through groove is arranged on the side wall of the fixed block.

[0007] Preferably, the detection mechanism also includes a rotating shaft rotatably connected to the inner wall of the rectangular groove, a mounting block is fixedly connected to the outer wall of the rotating shaft, a movable groove 1 is opened in the mounting block, a plurality of slides are slidably connected in the movable groove 1, and a plurality of slides are respectively provided with mounting grooves on one side close to the rotating shaft, a spring telescopic rod 1 is fixedly connected to the inner wall of the mounting groove, and an end of the spring telescopic rod 1 away from the slide is fixedly connected to the rotating shaft. When the flow rate of the fluid is too large, the slide will rotate rapidly. When the slide rotates rapidly, the centrifugal force generated will force the spring telescopic rod 1 to drive the slide to expand outward.

[0008] Preferably, the detection mechanism also includes a strip block slidably connected to the left side of the rectangular block, the right end of the strip block extends into the rectangular groove and is slidably connected to the rectangular groove, a plurality of tooth plates are fixedly connected to the bottom of the strip block, a spring telescopic rod 2 is fixedly connected to the inner wall of the rectangular groove, the end of the spring telescopic rod 2 away from the rectangular groove is fixedly connected to the top of the strip block, a plurality of limiting teeth are fixedly connected to the top of the strip block, and the slide plate will contact the tooth plate after expanding outward and continuing to rotate, thereby forcing the tooth plate to drive the strip block to slide to the left.

[0009] Preferably, the blocking mechanism also includes a mounting cylinder fixedly connected to the side wall of the support frame, a coil spring is fixedly connected to the inner wall of the mounting cylinder, the inner wall of the coil spring is fixedly connected to the outer wall of the rotating rod, an arc block 1 is fixedly connected to the side of the support frame away from the mounting cylinder, an arc block 2 is fixedly connected to the outer wall of the rotating rod, and the arc block 2 is in contact with the arc block 1. When the slide plate drives the strip block to move to the left through the tooth plate, under the action of the plurality of limiting teeth, the strip block moves to the left, driving the plurality of limiting teeth to move to the left. The plurality of limiting teeth are blocked by the limiting plate, which can prevent the strip block from resetting to the right after moving to the left. When the slider drives the bar block to move to the left, the limit plate can smoothly rotate clockwise without affecting the normal movement of the bar block. When the bar block has a tendency to move to the right, the limit plate can clamp the limit tooth to prevent it from moving. This design can ensure that when the fluid flow rate is too fast, the bar block can drive the special-shaped plate to move to the left when it moves to the left, without blocking the baffle plate. It can ensure that the baffle plate moves downward to block the delivery pipe, thereby improving the stability of the device when in use.

[0010] Preferably, the blocking mechanism also includes a V-shaped block fixedly connected to the bottom of the strip block, two special-shaped plates are fixedly connected to the top of the V-shaped block, a baffle is slidably connected to the top of the fixed block, the bottom of the baffle extends into the movable groove 2 and is slidably connected to the movable groove 2, and sliding grooves are respectively provided on the left and right sides of the baffle. When the strip block slides to the left, the special-shaped plate will be driven to slide in the sliding groove through the V-shaped block, and the spring 2 is in a pulled state at this time. When the groove on the special-shaped plate coincides with the sliding groove, the baffle is no longer blocked by the special-shaped plate, and the pulling force on the spring 2 disappears, thereby driving the baffle to move downward. After the baffle moves downward, it slides downward in the movable groove 2, and after sliding downward, the baffle contacts the inner wall of the conveying pipe, preventing the fluid from continuing to be transported through the conveying pipe. By automatically detecting the flow rate, when the flow rate is too large, the device can respond quickly to prevent the fluid from continuing to flow, thereby preventing potential risks caused by excessive flow, and enhancing the safety and reliability of the fluid during transportation.

[0011] Preferably, the sealing mechanism also includes an L-shaped plate fixedly connected to the outer wall of the fixed block, a sliding rod 1 is slidably connected to the side wall of the L-shaped plate, a pull ring is fixedly connected to the outer wall of the sliding rod 1, an adapter block is fixedly connected to the end of the sliding rod 1 away from the pull ring, a spring 1 is fixedly connected to the side where the adapter block and the L-shaped plate are close to each other, a plurality of grooves are provided on the outer wall of the fixed block, a connecting plate 1 is fixedly connected to the inner walls of the plurality of grooves, a plurality of connecting plates 2 are fixedly connected to the side wall of the baffle plate, a plurality of springs 2 are fixedly connected to the side where the plurality of connecting plates 2 and the plurality of connecting plates 1 are close to each other, and when the baffle plate has not moved downward When the delivery pipe is blocked, the adapter block is in close contact with the side wall of the baffle, and the spring is in an extruded state. When the baffle moves downward, the through groove on the side wall of the baffle will overlap with the adapter block. At this time, the adapter block is no longer in contact with the baffle, and the spring is no longer subjected to the extrusion force. The extrusion force is released and drives the adapter block into the through groove. After the adapter block enters the through groove, it can limit the baffle. In this way, when the baffle moves downward to block the fluid in the delivery pipe, it will not be flushed up by the fluid, ensuring that the baffle will not be flushed up can effectively block the fluid with too fast a flow rate, thereby avoiding the risk of explosion caused by continuous increase in pressure in the pipeline.

[0012] Preferably, the sealing mechanism also includes an arc groove provided on the side wall of the baffle plate, two sliding rods 2 are slidably connected in the arc groove, and the ends of the two sliding rods 2 away from the arc groove are respectively fixedly connected with scrapers, and the tops of the two scrapers are in contact with the bottom of the baffle plate, and the side walls of the two sliding rods 2 are respectively rotatably connected with connecting blocks 1, and the side walls of the two connecting blocks 1 are respectively fixedly connected with spring telescopic rods 3, and the inner wall of the movable groove 2 is fixedly connected with two fixing rods, and the outer walls of the two fixing rods are respectively rotatably connected with connecting blocks 2, and the outer wall of the connecting block 2 is fixedly connected with the spring telescopic rod 3. When the baffle plate moves downward, it is affected by the arc groove. The limitation will force the two slide bars to move to both sides along the trajectory of the arc groove. When the two slide bars move to both sides, they can drive the two scrapers to scrape off the impurities adsorbed on the bottom of the baffle. In this way, when the baffle moves downward to block the fluid in the conveying pipe, the bottom of the baffle can be in close contact with the inner wall of the conveying pipe, so as to maximize the blocking effect of the baffle, effectively control the flow of the fluid in the conveying pipe, and prevent fluid leakage and pressure loss caused by loose blocking. For pipelines transporting oil and natural gas, tightly fitting baffles can greatly reduce the risk of explosion and effectively protect the pipeline.

[0013] A method for using a detection device for detecting the flow rate of a gas-liquid two-phase flow comprises the following steps:

[0014] S1: When the flow rate of the fluid is too high, the slide plate will rotate rapidly. When the slide plate rotates rapidly, the centrifugal force generated will force the spring telescopic rod to drive the slide plate to expand outward. After the slide plate expands outward, it continues to rotate and contacts the tooth plate.

[0015] S2: When the slide plate drives the bar block to move to the left through the tooth plate, under the action of a plurality of limiting teeth, the bar block moves to the left and drives a plurality of limiting teeth to move to the left;

[0016] S3: When the baffle moves downward, the through slot on the side wall of the baffle overlaps with the adapter block, and the spring is no longer subjected to the extrusion force. The extrusion force is released to drive the adapter block into the through slot to limit the baffle;

[0017] S4: When the baffle moves downward, it is restricted by the arc groove, forcing the two slide bars to move to both sides along the track of the arc groove. When the two slide bars move to both sides, they can drive the two scrapers to scrape off the impurities adsorbed on the bottom of the baffle.

[0018] The present invention has the following beneficial effects:

[0019] When the device of the present invention is used, the fluid passes through the conveying pipe. When the flow rate of the fluid is normal, the flow rate of the fluid is also in a normal state. When the flow rate of the fluid is too large, the flow rate of the fluid will increase accordingly. When the flow rate of the fluid is in a normal state, the fluid contacts the slide plate. At this time, the slide plate will rotate slowly, and the centrifugal force generated will not cause the slide plate to expand outward, and the slide plate will not contact the tooth plate. When the flow rate of the fluid is too large, the slide plate will rotate rapidly. When the slide plate rotates rapidly, the centrifugal force generated will force the spring telescopic rod to drive the slide plate to expand outward. After the slide plate expands outward, it continues to rotate and contacts the tooth plate, which in turn forces the tooth plate to drive the strip block to slide to the left. When the strip block slides to the left, it will drive the special-shaped plate to slide in the slide groove through the V-shaped block. At this time, the spring 2 is in a pulled state. When the groove on the special-shaped plate coincides with the slide groove, the baffle is no longer blocked by the special-shaped plate, and the pulling force on the spring 2 disappears, thereby driving the baffle to move downward. After the baffle moves downward, it slides downward in the movable groove 2. After sliding downward, the baffle contacts the inner wall of the conveying pipe, preventing the fluid from continuing to be transported through the conveying pipe. By automatically detecting the flow rate, when the flow rate is too large, the device can respond quickly to prevent the fluid from continuing to flow, thereby preventing potential risks caused by excessive flow, and enhancing the safety and reliability of the fluid during transportation.

[0020] When the slider drives the bar block to move to the left through the toothed plate, the bar block moves to the left and drives the limit teeth to move to the left under the action of the limit teeth. The limit teeth are blocked by the limit plate, which can prevent the bar block from resetting to the right after moving to the left. The limit plate is restricted by the arc block one and the arc block two during rotation, so that the rotating rod and the limit plate can only rotate clockwise. When the slider drives the bar block to move to the left, the limit plate can rotate clockwise smoothly without affecting the normal movement of the bar block. When the bar block has a tendency to move to the right, the limit plate can clamp the limit teeth to prevent it from moving. Such a design can ensure that when the fluid flow rate is too fast, the bar block can drive the special-shaped plate to move to the left when it moves to the left, without blocking the baffle plate, and can ensure that the baffle plate moves downward to block the delivery pipe, thereby improving the stability of the device when in use.

[0021] When the baffle of the present invention moves downward to block the fluid in the delivery pipe, the fluid in the delivery pipe is still in a state of continuing to be transmitted. The impact of the fluid will cause the baffle to contact the delivery pipe, and then the baffle will be flushed up by the fluid. For pipelines that transport flammable and explosive fluids, the baffle is flushed up and cannot effectively block the fluid with a flow rate that is too fast, which may cause the pressure in the pipeline to continue to increase. Before the baffle moves downward to block the delivery pipe, the adapter block is in close contact with the side wall of the baffle, and the spring is in a squeezed state. When the baffle moves downward, the through groove opened on the side wall of the baffle will overlap with the adapter block. At this time, the adapter block is no longer in contact with the baffle, and the spring is no longer subjected to the squeezing force. The squeezing force is released and drives the adapter block to enter the through groove. After the adapter block enters the through groove, it can limit the baffle, so that when the baffle moves downward to block the fluid in the delivery pipe, it will not be flushed up by the fluid, ensuring that the baffle will not be flushed up and can effectively block the fluid with a flow rate that is too fast, thereby avoiding the risk of explosion caused by the continuous increase in pressure in the pipeline.

[0022] The fluid of the present invention may be mixed with impurities, and the impurities may be adsorbed on the bottom of the baffle, which may prevent the baffle from being tightly attached to the inner wall of the delivery pipe when it moves downward to block the delivery pipe. When the baffle moves downward, it is restricted by the arc groove, forcing the two slide bars to move to both sides along the trajectory of the arc groove. When the two slide bars move to both sides, they can drive the two scrapers to scrape off the impurities adsorbed on the bottom of the baffle, thereby ensuring that when the baffle moves downward to block the fluid in the delivery pipe, the bottom of the baffle can be tightly attached to the inner wall of the delivery pipe, thereby maximizing the blocking effect of the baffle, effectively controlling the flow of the fluid in the delivery pipe, and preventing fluid leakage and pressure loss caused by loose blocking. For pipelines transporting oil and natural gas, the tightly fitting baffle can greatly reduce the risk of explosion and effectively protect the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 It is a cross-sectional schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a partial cross-sectional schematic diagram of the detection mechanism of the present invention;

[0026] Figure 3 For the present invention Figure 2 A is an enlarged schematic diagram;

[0027] Figure 4 It is a schematic diagram of some components in the blocking mechanism of the present invention;

[0028] Figure 5 For the present invention Figure 4 A magnified schematic diagram of B;

[0029] Figure 6 It is a schematic diagram of the sealing mechanism of the present invention;

[0030] Figure 7 For the present invention Figure 6 A magnified schematic diagram of middle C;

[0031] Figure 8 It is a schematic diagram of the internal components in the sealing mechanism of the present invention;

[0032] Fig. 9 For the present invention Figure 8 A magnified schematic diagram of D in the middle;

[0033] Fig.10 It is a schematic diagram of the working process of the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] In the figure: 1. detection mechanism; 101. conveying tube; 102. rectangular block; 103. rectangular groove; 104. rotating shaft; 105. mounting block; 106. movable groove 1; 107. slide plate; 108. mounting groove; 109. spring telescopic rod 1; 110. strip block; 111. tooth plate; 112. spring telescopic rod 2; 113. limit tooth; 2. blocking mechanism; 201. support frame; 202. rotating rod; 203. limit plate; 204. mounting cylinder; 205. coil spring; 206. arc block 1; 207. arc block 2; 208. V-shaped Block; 209, special-shaped plate; 210, baffle; 211, slide groove; 3, sealing mechanism; 301, fixed block; 302, movable groove 2; 303, through groove; 304, L-shaped plate; 305, slide rod 1; 306, pull ring; 307, adapter block; 308, spring 1; 309, groove; 310, connecting plate 1; 311, connecting plate 2; 312, spring 2; 313, arc groove; 314, slide rod 2; 315, scraper; 316, connecting block 1; 317, spring telescopic rod 3; 318, fixed rod; 319, connecting block 2. DETAILED DESCRIPTION

[0036] 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.

[0037] For example, see Figure 1 - Figure 3 The present invention is a detection device for detecting the flow rate of a gas-liquid two-phase flow, comprising a detection mechanism 1, the detection mechanism 1 also comprising a delivery pipe 101, a rectangular block 102 is fixedly connected to the outer wall of the delivery pipe 101, and a rectangular groove 103 is opened at the bottom of the rectangular block 102;

[0038] Blocking mechanism 2, the top of the rectangular block 102 is fixedly connected with a support frame 201, the side of the support frame 201 away from the rectangular block 102 is rotatably connected with a rotating rod 202, and the outer wall of the rotating rod 202 is fixedly connected with a limiting plate 203;

[0039] Sealing mechanism 3 , a fixed block 301 is fixedly connected to the top of the delivery pipe 101 , a movable groove 302 is provided at the bottom of the fixed block 301 , and a through groove 303 is provided on the side wall of the fixed block 301 .

[0040] The detection mechanism 1 also includes a rotating shaft 104 rotatably connected to the inner wall of the rectangular groove 103, a mounting block 105 is fixedly connected to the outer wall of the rotating shaft 104, a movable groove 106 is opened in the mounting block 105, and a plurality of slides 107 are slidably connected in the movable groove 106, and a plurality of slides 107 are respectively provided with mounting grooves 108 on the side close to the rotating shaft 104, and a spring telescopic rod 109 is fixedly connected to the inner wall of the mounting groove 108, and one end of the spring telescopic rod 109 away from the slide 107 is fixedly connected to the rotating shaft 104. When the flow rate of the fluid is too large, the slide 107 will rotate rapidly. When the slide 107 rotates rapidly, the centrifugal force generated will force the spring telescopic rod 109 to drive the slide 107 to expand outward.

[0041] The detection mechanism 1 also includes a strip block 110 slidably connected to the left side of the rectangular block 102, the right end of the strip block 110 extends into the rectangular groove 103 and is slidably connected to the rectangular groove 103, a plurality of tooth plates 111 are fixedly connected to the bottom of the strip block 110, a spring telescopic rod 112 is fixedly connected to the inner wall of the rectangular groove 103, the end of the spring telescopic rod 112 away from the rectangular groove 103 is fixedly connected to the top of the strip block 110, a plurality of limiting teeth 113 are fixedly connected to the top of the strip block 110, and the slide plate 107 expands outward and continues to rotate to contact the tooth plate 111, thereby forcing the tooth plate 111 to drive the strip block 110 to slide to the left.

[0042] For example 2, please refer to Figure 4 - Fig.10The present invention is a detection device for detecting the flow rate of a gas-liquid two-phase flow. On the basis of Example 1, the blocking mechanism 2 also includes a mounting cylinder 204 fixedly connected to the side wall of the support frame 201, a coil spring 205 is fixedly connected to the inner wall of the mounting cylinder 204, and the inner wall of the coil spring 205 is fixedly connected to the outer wall of the rotating rod 202. An arc block 1 206 is fixedly connected to the side of the support frame 201 away from the mounting cylinder 204, and an arc block 207 is fixedly connected to the outer wall of the rotating rod 202. The arc block 207 is in contact with the arc block 1 206. When the slide plate 107 drives the strip block 110 to move to the left through the tooth plate 111, under the action of the plurality of limiting teeth 113, the strip block 110 moves to the left and drives the plurality of limiting teeth 113 to move to the left. The plurality of limiting teeth 113 are blocked by the limiting plate 203. The limit plate 203 is restricted by the arc block 1 206 and the arc block 207 during rotation, so that the rotating rod 202 and the limit plate 203 can only rotate clockwise. When the slide plate 107 drives the bar block 110 to move to the left, the limit plate 203 can rotate clockwise smoothly without affecting the normal movement of the bar block 110. When the bar block 110 tends to move to the right, the limit plate can jam the limit tooth to prevent it from moving. Such a design can ensure that when the fluid flow rate is too fast, the bar block 110 can drive the special-shaped plate 209 to move to the left when it moves to the left, without blocking the baffle plate 210. It can ensure that the baffle plate 210 moves downward to block the delivery pipe 101, thereby improving the stability of the device during use.

[0043] The blocking mechanism 2 also includes a V-shaped block 208 fixedly connected to the bottom of the bar block 110, and two special-shaped plates 209 are fixedly connected to the top of the V-shaped block 208. The top of the fixed block 301 is slidably connected with a baffle 210, and the bottom of the baffle 210 extends into the movable groove 202 and is slidably connected to the movable groove 202. The left and right sides of the baffle 210 are respectively provided with sliding grooves 211. When the bar block 110 slides to the left, the special-shaped plate 209 will slide in the sliding groove 211 through the V-shaped block 208. At this time, the spring 2 312 is in a pulled state. When the concave portion on the special-shaped plate 209 is pulled, the spring 212 is pulled back. When the groove coincides with the slide groove 211, the baffle 210 is no longer blocked by the special-shaped plate 209, and the pulling force on the spring 2 312 disappears, thereby driving the baffle 210 to move downward. After the baffle 210 moves downward, it slides downward in the movable groove 2 302. After sliding downward, the baffle 210 contacts the inner wall of the delivery pipe 101, preventing the fluid from continuing to be transported through the delivery pipe 101. By automatically detecting the flow rate, when the flow rate is too large, the device can respond quickly to prevent the fluid from continuing to flow, thereby preventing potential risks caused by excessive flow, and enhancing the safety and reliability of the fluid during transportation.

[0044] The sealing mechanism 3 also includes an L-shaped plate 304 fixedly connected to the outer wall of the fixed block 301, a sliding rod 305 is slidably connected to the side wall of the L-shaped plate 304, a pull ring 306 is fixedly connected to the outer wall of the sliding rod 305, an adapter block 307 is fixedly connected to the end of the sliding rod 305 away from the pull ring 306, a spring 308 is fixedly connected to the side of the adapter block 307 and the L-shaped plate 304 close to each other, a plurality of grooves 309 are provided on the outer wall of the fixed block 301, and a connecting plate 1 310 is fixedly connected to the inner walls of the plurality of grooves 309, a plurality of connecting plates 2 311 are fixedly connected to the side wall of the baffle 210, a plurality of springs 2 312 are fixedly connected to the side where the plurality of connecting plates 2 311 and the plurality of connecting plates 1 310 are close to each other, and the baffle 210 is also provided with a plurality of grooves 309, and a plurality of grooves 309 are fixedly connected to the inner walls of the ... outer wall of the baffle 210, and a plurality of grooves 309 are fixedly connected to the inner walls of the plurality of grooves 309, and a plurality of grooves 309 are fixedly connected to the inner walls of the plurality of grooves 309, and a plurality of grooves When it does not move downward to block the delivery pipe 101, the adapter block 307 is in close contact with the side wall of the baffle 210, and the spring 1 308 is in a squeezed state. When the baffle 210 moves downward, the through groove 303 opened on the side wall of the baffle 210 will overlap with the adapter block 307. At this time, the adapter block 307 is no longer in contact with the baffle 210, and the spring 1 308 is no longer subjected to the squeezing force. The release of the squeezing force drives the adapter block 307 to enter the through groove 303. After entering the through groove 303, the adapter block 307 can limit the baffle 210. In this way, when the baffle 210 moves downward to block the fluid in the delivery pipe 101, it will not be flushed up by the fluid, ensuring that the baffle will not be flushed up can effectively block the fluid with too fast a flow rate, thereby avoiding the risk of explosion caused by continuous increase in pressure in the pipeline.

[0045] The sealing mechanism 3 also includes an arc groove 313 provided on the side wall of the baffle 210, and two sliding rods 314 are slidably connected in the arc groove 313, and the ends of the two sliding rods 314 away from the arc groove 313 are respectively fixedly connected with scrapers 315, and the tops of the two scrapers 315 are in contact with the bottom of the baffle 210, and the side walls of the two sliding rods 314 are respectively rotatably connected with connecting blocks 1 316, and the side walls of the two connecting blocks 1 316 are respectively fixedly connected with spring telescopic rods 317, and the inner wall of the movable groove 2 302 is fixedly connected with two fixing rods 318, and the outer walls of the two fixing rods 318 are respectively rotatably connected with connecting blocks 2 319, and the outer wall of the connecting block 2 319 is fixedly connected with the spring telescopic rod 3 317. When the baffle 210 When moving downward, the two slide bars 314 are restricted by the arc groove 313 and are forced to move to both sides along the trajectory of the arc groove 313. When the two slide bars 314 move to both sides, they can drive the two scrapers 315 to scrape off the impurities adsorbed on the bottom of the baffle 210. This ensures that when the baffle 210 moves downward to block the fluid in the delivery pipe 101, the bottom of the baffle 210 can be in close contact with the inner wall of the delivery pipe 101. This can maximize the blocking effect of the baffle 210, effectively control the flow of the fluid in the delivery pipe 101, and prevent fluid leakage and pressure loss due to loose blocking. For pipelines transporting oil and natural gas, a tightly fitting baffle can greatly reduce the risk of explosion and effectively protect the pipeline.

[0046] The method for using the detection device includes the following steps:

[0047] S1: When the flow rate of the fluid is too high, the slide plate 107 will rotate rapidly. When the slide plate 107 rotates rapidly, the centrifugal force generated will force the spring telescopic rod 109 to drive the slide plate 107 to expand outward. After the slide plate 107 expands outward, it continues to rotate and contacts the tooth plate 111.

[0048] S2: When the slide plate 107 drives the bar block 110 to move leftward through the tooth plate 111, under the action of the plurality of limiting teeth 113, the bar block 110 moves leftward and drives the plurality of limiting teeth 113 to move leftward;

[0049] S3: When the baffle 210 moves downward, the through slot 303 on the side wall of the baffle 210 overlaps with the adapter block 307, and the spring 1 308 is no longer subjected to the extrusion force. The extrusion force is released to drive the adapter block 307 into the through slot 303 to limit the baffle 210;

[0050] S4: When the baffle 210 moves downward, it is restricted by the arc groove 313, forcing the two sliding bars 314 to move to both sides along the track of the arc groove 313. When the two sliding bars 314 move to both sides, they can drive the two scrapers 315 to scrape off the impurities adsorbed on the bottom of the baffle 210.

[0051] A specific application of this embodiment is:

[0052] When the device is used, the fluid passes through the delivery pipe 101. When the flow rate of the fluid is normal, the flow rate of the fluid is also in a normal state. When the flow rate of the fluid is too large, the flow rate of the fluid will also increase accordingly. When the flow rate of the fluid is in a normal state, the fluid contacts the slide plate 107. At this time, the slide plate 107 will rotate slowly, and the centrifugal force generated will not cause the slide plate 107 to expand outward, and the slide plate 107 will not contact the tooth plate 111. When the flow rate of the fluid is too large, the slide plate 107 will rotate rapidly. When the slide plate 107 rotates rapidly, the centrifugal force generated will force the spring telescopic rod 109 to drive the slide plate 107 to expand outward. After the slide plate 107 expands outward, it continues to rotate and contacts the tooth plate 111, which in turn forces the tooth plate 111 to drive the strip block 110 to slide to the left. When the strip block 111 When sliding to the left, the V-shaped block 208 drives the special-shaped plate 209 to slide in the slide groove 211. At this time, the second spring 312 is in a pulled state. When the groove on the special-shaped plate 209 coincides with the slide groove 211, the baffle plate 210 is no longer blocked by the special-shaped plate 209, and the pulling force on the second spring 312 disappears, thereby driving the baffle plate 210 to move downward. After the baffle plate 210 moves downward, it slides downward in the movable groove 302. After sliding downward, the baffle plate 210 contacts the inner wall of the delivery pipe 101, preventing the fluid from continuing to be transported through the delivery pipe 101. By automatically detecting the flow rate, when the flow rate is too large, the device can respond quickly to prevent the fluid from continuing to flow, thereby preventing potential risks caused by excessive flow, and enhancing the safety and reliability of the fluid during transportation.

[0053] When the slide plate 107 drives the bar block 110 to move to the left through the tooth plate 111, under the action of the plurality of limiting teeth 113, the bar block 110 moves to the left and drives the plurality of limiting teeth 113 to move to the left. The plurality of limiting teeth 113 are blocked by the limiting plate 203, which can prevent the bar block 110 from returning to the right after moving to the left. The limiting plate 203 is restricted by the arc block 1 206 and the arc block 2 207 when rotating, so that the rotating rod 202 and the limiting plate 203 can only rotate clockwise. When the bar block 110 moves to the left, the limit plate 203 can rotate clockwise smoothly without affecting the normal movement of the bar block 110. When the bar block 110 tends to move to the right, the limit plate can clamp the limit tooth to prevent it from moving. Such a design can ensure that when the bar block 110 moves to the left, it can drive the special-shaped plate 209 to move to the left without blocking the baffle 210 when the fluid flow rate is too fast. It can ensure that the baffle 210 moves downward to block the delivery pipe 101, thereby improving the stability of the device during use.

[0054] When the baffle 210 moves downward to block the fluid in the delivery pipe 101, the fluid in the delivery pipe 101 is still in a state of continuous transmission. The impact of the fluid will cause the baffle 210 to contact the delivery pipe 101, and the baffle 210 will be flushed up by the fluid. For pipelines that transport flammable and explosive fluids, the baffle is flushed up and cannot effectively block the fluid with a too fast flow rate, which may cause the pressure in the pipeline to continue to increase. Before the baffle 210 moves downward to block the delivery pipe 101, the adapter block 307 is in close contact with the side wall of the baffle 210, and the spring 1 308 is in a squeezed state. When the baffle 210 After moving downward, the through groove 303 on the side wall of the baffle 210 will overlap with the adapter block 307. At this time, the adapter block 307 is no longer in contact with the baffle 210, and the spring 1 308 is no longer subjected to the extrusion force. The release of the extrusion force drives the adapter block 307 to enter the through groove 303. After entering the through groove 303, the adapter block 307 can limit the baffle 210. In this way, when the baffle 210 moves downward to block the fluid in the delivery pipe 101, it will not be flushed up by the fluid, ensuring that the baffle will not be flushed up can effectively block the fluid with too fast a flow rate, thereby avoiding the risk of explosion caused by continuous increase in pressure in the pipeline.

[0055] The fluid may be mixed with impurities, which may be adsorbed on the bottom of the baffle 210. This will cause the baffle 210 to move downward to block the delivery pipe 101, but it cannot be tightly attached to the inner wall of the delivery pipe 101. When the baffle 210 moves downward, it is restricted by the arc groove 313, forcing the two sliding bars 314 to move to both sides along the trajectory of the arc groove 313. When the two sliding bars 314 move to both sides, they can drive the two scrapers 315 to scrape off the impurities adsorbed on the bottom of the baffle 210. This ensures that when the baffle 210 moves downward to block the fluid in the delivery pipe 101, the bottom of the baffle 210 can be tightly attached to the inner wall of the delivery pipe 101. This can maximize the blocking effect of the baffle 210, effectively control the flow of the fluid in the delivery pipe 101, and prevent fluid leakage and pressure loss caused by loose blocking. For pipelines transporting oil and natural gas, a tightly fitting baffle can greatly reduce the risk of explosion and effectively protect the pipeline.

[0056] 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. A detection device for detecting the flow rate of a gas-liquid two-phase flow, comprising a detection mechanism (1), the detection mechanism (1) further comprising a delivery pipe (101), a rectangular block (102) being fixedly connected to the outer wall of the delivery pipe (101), a rectangular groove (103) being provided at the bottom of the rectangular block (102), characterized in that: Also includes: A blocking mechanism (2), wherein the top of the rectangular block (102) is fixedly connected to a support frame (201), a side of the support frame (201) away from the rectangular block (102) is rotatably connected to a rotating rod (202), and a limiting plate (203) is fixedly connected to the outer wall of the rotating rod (202); A sealing mechanism (3), wherein the top of the delivery pipe (101) is fixedly connected to a fixing block (301), a movable groove (2) (302) is provided at the bottom of the fixing block (301), and a through groove (303) is provided on the side wall of the fixing block (301); The detection mechanism (1) further comprises a rotating shaft (104) rotatably connected to the inner wall of the rectangular groove (103); a mounting block (105) is fixedly connected to the outer wall of the rotating shaft (104); a movable groove (106) is provided in the mounting block (105); a plurality of slide plates (107) are slidably connected in the movable groove (106); a plurality of slide plates (107) are respectively provided with mounting grooves (108) on one side close to the rotating shaft (104); a spring telescopic rod (109) is fixedly connected to the inner wall of the mounting groove (108); and an end of the spring telescopic rod (109) away from the slide plate (107) is fixedly connected to the rotating shaft (104); The detection mechanism (1) further comprises a strip block (110) slidably connected to the left side of the rectangular block (102), and a plurality of tooth plates (111) are fixedly connected to the bottom of the strip block (110); The blocking mechanism (2) further comprises a V-shaped block (208) fixedly connected to the bottom of the bar block (110), the top of the V-shaped block (208) being fixedly connected to two special-shaped plates (209), and the top of the fixed block (301) being slidably connected to a baffle (210); A plurality of grooves (309) are formed on the outer wall of the fixed block (301), and a connection plate 1 (310) is fixedly connected to the inner walls of the plurality of grooves (309), a plurality of connection plates 2 (311) is fixedly connected to the side wall of the baffle plate (210), and a plurality of springs 2 (312) are fixedly connected to the side where the plurality of connection plates 2 (311) and the plurality of connection plates 1 (310) are close to each other.

2. A detection device for detecting the flow rate of a gas-liquid two-phase flow according to claim 1, characterized in that: The right end of the strip block (110) extends into the rectangular groove (103) and is slidably connected to the rectangular groove (103); a second spring telescopic rod (112) is fixedly connected to the inner wall of the rectangular groove (103); one end of the second spring telescopic rod (112) away from the rectangular groove (103) is fixedly connected to the top of the strip block (110); and a plurality of limiting teeth (113) are fixedly connected to the top of the strip block (110).

3. A detection device for detecting the flow rate of a gas-liquid two-phase flow according to claim 2, characterized in that: The blocking mechanism (2) further comprises a mounting tube (204) fixedly connected to a side wall of the support frame (201); a coil spring (205) is fixedly connected to the inner wall of the mounting tube (204); the inner wall of the coil spring (205) is fixedly connected to the outer wall of the rotating rod (202); an arc block 1 (206) is fixedly connected to a side of the support frame (201) away from the mounting tube (204); an arc block 2 (207) is fixedly connected to the outer wall of the rotating rod (202); and the arc block 2 (207) is in contact with the arc block 1 (206).

4. A detection device for detecting the flow rate of a gas-liquid two-phase flow according to claim 3, characterized in that: The bottom of the baffle plate (210) extends into the movable groove 2 (302) and is slidably connected to the movable groove 2 (302), and sliding grooves (211) are respectively provided on the left and right sides of the baffle plate (210).

5. A detection device for detecting the flow rate of a gas-liquid two-phase flow according to claim 4, characterized in that: The sealing mechanism (3) further comprises an L-shaped plate (304) fixedly connected to the outer wall of the fixed block (301); a sliding rod (305) is slidably connected to the side wall of the L-shaped plate (304); a pull ring (306) is fixedly connected to the outer wall of the sliding rod (305); an adaptor block (307) is fixedly connected to one end of the sliding rod (305) away from the pull ring (306); and a spring (308) is fixedly connected to one side of the adaptor block (307) and the L-shaped plate (304) where the two sides are close to each other.

6. A detection device for detecting the flow rate of a gas-liquid two-phase flow according to claim 5, characterized in that: The sealing mechanism (3) further comprises an arc groove (313) formed on the side wall of the baffle (210), wherein two sliding rods (314) are slidably connected in the arc groove (313), and the ends of the two sliding rods (314) away from the arc groove (313) are respectively fixedly connected with scrapers (315), and the tops of the two scrapers (315) are in contact with the bottom of the baffle (210), and the side walls of the two sliding rods (314) are respectively rotatably connected with connecting blocks (316), and the side walls of the two connecting blocks (316) are respectively fixedly connected with spring telescopic rods (317), and the inner wall of the movable groove (302) is fixedly connected with two fixing rods (318), and the outer walls of the two fixing rods (318) are respectively rotatably connected with connecting blocks (319), and the outer wall of the connecting block (319) is fixedly connected with the spring telescopic rod (317).

7. A method for using a detection device for detecting the flow rate of a gas-liquid two-phase flow, using the detection device for the flow rate of a gas-liquid two-phase flow as claimed in claim 6, characterized in that: The steps include: S1: When the flow rate of the fluid is too high, the slide plate (107) will rotate rapidly. When the slide plate (107) rotates rapidly, the centrifugal force generated will force the spring telescopic rod 1 (109) to drive the slide plate (107) to expand outward. After the slide plate (107) expands outward, it continues to rotate and contacts the tooth plate (111); S2: When the slide plate (107) drives the bar block (110) to move leftward through the tooth plate (111), under the action of the plurality of limiting teeth (113), the bar block (110) moves leftward, driving the plurality of limiting teeth (113) to move leftward; S3: When the baffle (210) moves downward, the through slot (303) provided on the side wall of the baffle (210) overlaps with the adapter block (307), and the spring 1 (308) is no longer subjected to the extrusion force. The extrusion force is released, driving the adapter block (307) to enter the through slot (303) to limit the baffle (210); S4: When the baffle (210) moves downward, it is restricted by the arc groove (313), forcing the two second slide bars (314) to move to both sides along the track of the arc groove (313). When the two second slide bars (314) move to both sides, they can drive the two scrapers (315) to scrape off the impurities adsorbed on the bottom of the baffle (210).

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