High-precision wide-range double-path pulse scraper flowmeter

Abstract

The present application relates to the technical field of scraper flowmeter, particularly relates to a high-precision wide-range double-path pulse scraper flowmeter. The high-precision wide-range double-path pulse scraper flowmeter comprises a scraper flowmeter body, a liquid inlet pipe and a sampling mechanism, the two sides of the scraper flowmeter body are respectively provided with a liquid inlet and a liquid outlet, the liquid inlet pipe is horizontally arranged, one end of the liquid inlet pipe is connected with the liquid inlet and communicates with the liquid inlet, the upper end of the liquid inlet pipe is provided with a sampling port, and the sampling mechanism is arranged in the sampling port and used for sampling the liquid flowing through the liquid inlet pipe. Advantages: the structure design is reasonable, the operation is convenient, the liquid flowing in the flowmeter can be sampled, and the liquid can be conveniently detected and analyzed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of scraper flowmeter, in particular to a high-precision large-range double-path pulse scraper flowmeter. BACKGROUND

[0002] At present, there are large-range scraper flowmeters, among which the scraper flowmeter is a volumetric flowmeter used for continuously or intermittently measuring the volume flow of liquid flowing in a closed pipeline, and is suitable for the measurement of crude oil and product transfer and trade settlement. There is a pressure difference between the inlet and outlet of the flowmeter, which needs to be maintained during the entire measurement process to drive the rotation of the scraper and rotor. The design of the scraper in the flowmeter is to make the liquid entering the flowmeter not produce turbulent flow and the pressure difference not decrease. Since the liquid to be detected in the flowmeter is not constant, it needs to detect various liquids. During the measurement process of the flowmeter, it is necessary to determine that the liquid in the flowmeter is not deteriorated or the composition is not changed to ensure high precision, so it is necessary to frequently detect the liquid in the flowmeter to avoid errors and improve precision. However, the current flowmeter does not have this function, and therefore needs to be improved. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a high-precision large-range double-path pulse scraper flowmeter, which effectively overcomes the defects of the prior art.

[0004] The technical solution of the present application to solve the above technical problems is as follows:

[0005] A high-precision large-range double-path pulse scraper flowmeter, comprising a scraper flowmeter body, a liquid inlet pipe and a sampling mechanism, two sides of the scraper flowmeter body are respectively provided with a liquid inlet and a liquid outlet, the liquid inlet pipe is horizontally arranged, one end of the liquid inlet pipe is connected with the liquid inlet and communicates with the liquid inlet, the upper end of the liquid inlet pipe is provided with a sampling port, the sampling mechanism is installed in the sampling port and is used for sampling the liquid flowing through the liquid inlet pipe.

[0006] On the basis of the above technical solution, the present application can also be improved as follows.

[0007] Further, the sampling mechanism comprises a lifting mechanism, a sampling groove, a rotating device, a rotating frame and a plurality of sampling grooves. The sampling groove is open at the lower part and is sealed in the sampling port. The upper part of the side wall of the sampling groove is provided with a sampling port. The lifting mechanism is connected with the upper end of the sampling groove and is used to drive the sampling groove to move downward or upward to expose the liquid inlet pipe outside the upper part.

[0008] Further, the end wall of the sampling groove is provided with a through hole. The rotating shaft is inserted into the through hole and can rotate freely.

[0009] Further, the bottom of each sampling groove is provided with a first telescopic device. The inner side of the bottom of the sampling groove is provided with a piston plate which is sealedly connected with the side wall. The telescopic end of the first telescopic device is inserted into the wall of the sampling groove and is connected with the piston plate. The upper end of the side wall of the sampling groove near the sampling port is provided with a notch. The notch is hingedly connected with a curved connecting plate. The outer side of the side wall of the sampling groove near the sampling port is provided with a second telescopic device. The telescopic end of the second telescopic device is upwardly connected with the bottom of the connecting plate. The second telescopic device is used to drive the telescopic end to extend downward to make the connecting plate turn downward under the action of gravity or to extend upward to lift the connecting plate and turn it upward. The first telescopic device is used to drive the piston plate to move upward to make the liquid collected by the sampling groove flow upward along the connecting plate.

[0010] Further, the inner port of the sampling port is detachably provided with a sampling box for receiving the liquid flowing along the connecting plate.

[0011] Further, the upper end of the side wall of the sampling groove near the sampling port is lower than the upper end of the side wall of the sampling groove.

[0012] Further, the first telescopic device and the second telescopic device are both air cylinders or hydraulic cylinders.

[0013] Further, the lifting mechanism is an air cylinder or a hydraulic cylinder.

[0014] Further, the rotating device is an electric motor.

[0015] Furthermore, the rotating frame includes a turntable and multiple connecting rods. The middle part of the turntable is connected and fixed to the drive end of the rotating device. Each of the multiple connecting rods corresponds to one of the multiple sampling slots. The connecting rods are distributed at intervals along the circumference of the turntable. One end of each connecting rod is connected and fixed to the outer edge of the turntable, and the other end is rotatably connected to the corresponding sampling slot through the rotating shaft.

[0016] The advantages of this invention are: reasonable structural design, convenient operation, and the ability to sample the liquid flowing in the flow meter, which facilitates the detection and analysis of the liquid. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the scraper flowmeter body in the high-precision, large-range dual-path pulse scraper flowmeter of the present invention;

[0018] Figure 2 This is a cross-sectional view of the high-precision, large-range dual-path pulse scraper flowmeter of the present invention.

[0019] Figure 3 for Figure 2 Enlarged view of the structure of part A in the middle.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Scraper flow meter body; 2. Inlet pipe; 3. Sampling mechanism; 4. Sampling box; 31. Lifting mechanism; 32. Sampling slot; 33. Rotating device; 34. Rotating frame; 35. Sampling slot; 36. First telescopic device; 37. Connecting plate; 38. Second telescopic device; 321. Sampling port; 341. Turntable; 342. Connecting rod; 361. Piston plate. Detailed Implementation

[0022] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0023] Example: Figure 1 and 2 As shown, the high-precision, large-range dual-path pulse scraper flowmeter of this embodiment includes a scraper flowmeter body 1, an inlet pipe 2, and a sampling mechanism 3. The scraper flowmeter body 1 has an inlet and an outlet on both sides, respectively. The inlet pipe 2 is horizontally arranged, with one end connected to and communicating with the inlet. The upper end of the inlet pipe 2 is provided with a sampling port. The sampling mechanism 3 is installed in the sampling port and is used to sample the liquid flowing through the inlet pipe 2.

[0024] During the operation, the sampling mechanism 3 samples from the liquid inlet pipe 2 through the sampling port at irregular or periodic intervals, and then the sampled sample is detected and analyzed. If the liquid deteriorates or the composition changes, timely response processing is made, and overall real-time online detection of the liquid is achieved. The entire flowmeter structure is reasonable in design and convenient to operate.

[0025] It should be noted that in this embodiment, the rotating shaft inside the shell of the scraper flowmeter body 1 is provided with a pulse transmitter, and a counter for receiving the pulse transmitter is provided on the shell. The rotation of the rotating shaft can drive the scraper inside the scraper flowmeter body 1 to rotate. When the scraper rotates one circle, the pulse transmitter will send a signal to the counter, thereby calculating the rotation of the rotating shaft one circle.

[0026] As a preferred embodiment, the sampling mechanism 3 includes a lifting mechanism 31, a sampling groove 32, a rotating device 33, a rotating frame 34, and a plurality of sampling grooves 35. The sampling groove 32 is open at the lower part and is sealed in the sampling port. The upper part of the side wall of the sampling groove 32 is provided with a sampling port 321. The lifting mechanism 31 is connected with the upper end of the sampling groove 32, and is used to drive the sampling groove 32 to move downward or upward to expose the outside above the liquid inlet pipe 2. The rotating device 33 is arranged in the middle position of the inner wall of one end of the sampling groove 32, and the driving end thereof extends to the middle position of the sampling groove 32. The rotating frame 34 is connected with the driving end of the rotating device 33. The sampling grooves 35 are distributed on a circle with the driving end as the center. The rotating frame 34 is respectively provided with a rotating shaft corresponding to each sampling groove 35. The sampling groove 35 is a groove body open at the upper part, and one end of the groove wall is rotationally connected with the corresponding rotating shaft. The rotating device 33 is used to drive the rotating frame 34 to rotate the plurality of sampling grooves 35, and each sampling groove 35 can be rotated to a position above one side of the sampling port 321.

[0027] In the above embodiment, when sampling is not needed, the sampling port 321 is located outside above the liquid inlet pipe 2 (which can be blocked). When sampling is needed, the lifting mechanism 31 is operated to drive the sampling groove 32 to descend, so that the plurality of sampling grooves 35 can be immersed in the liquid flowing in the liquid inlet pipe 2 when being rotated by the rotating device 33. The liquid enters the sampling groove 35 open at the upper part. After this process is completed, the lifting mechanism 31 is operated to drive the sampling groove 32 to ascend to the original position. Then, the rotating device 33 drives the rotating frame 34 and the plurality of sampling grooves 35 to rotate in sequence to the position of the sampling port 321. The sampling port 321 is opened, and the liquid in each sampling groove 35 is collected through the sampling port 321 (the collection method can use existing conventional tools, which are not limited to a specific one, as long as the liquid in the sampling groove 35 can be taken out). The entire device is simple in structure, convenient and fast in sampling.

[0028] It should be particularly emphasized that, since the sampling groove 35 is connected with the rotating frame 34 through the rotating shaft, the rotating frame 34 drives the sampling groove 35 to move in the circumferential direction, and the sampling groove 35 always keeps the upper end opening upward under the action of gravity.

[0029] In the embodiment, one end of the sampling groove 35 is provided with a through hole, and the rotating shaft is inserted into the through hole and can rotate relatively freely. The rotating shaft is connected with the through hole in the groove wall of the sampling groove 35 in a sleeve manner, which is beneficial to the relative rotation of the sampling groove 35 under the action of gravity, so that the groove opening of the sampling groove 35 is always upward.

[0030] As a preferred embodiment, as shown in Figure 3 the first telescopic device 36 is provided inside or at the bottom of the groove bottom of each sampling groove 35. The inside of the groove bottom of the sampling groove 35 is provided with a piston plate 361 which is sealingly connected with the side wall thereof. The telescopic end of the first telescopic device 36 extends upward into the groove wall of the sampling groove 35 and is connected with the piston plate 361. The upper end of the side groove wall of the sampling groove 35 close to the sampling port 321 is provided with a notch. The notch is hingedly connected with a curved connecting plate 37. The outside of the side groove wall of the sampling groove 35 close to the sampling port 321 is provided with a second telescopic device 38. The telescopic end of the second telescopic device 38 extends upward and contacts the bottom of the connecting plate 37. The second telescopic device 38 is used to drive the telescopic end to extend downward to make the connecting plate 37 turn downward under the action of gravity, or to drive the telescopic end to extend upward to lift the connecting plate 37 and turn it upward. The first telescopic device 36 is used to drive the piston plate 361 to move upward to make the liquid collected in the sampling groove 35 flow upward and along the connecting plate 37 which has turned downward.

[0031] In the above embodiment, after the sampling groove 35 is sampled, the rotating device 33 drives the sampling groove 35 to rotate to the side end above the sampling port 321 (in the sampling state, the second telescopic device 38 is in the state of extending upward, and the connecting plate 37 is lifted upward, that is, in the state of being lifted upward). Next, the second telescopic device 38 is retracted downward, and the connecting plate 37 can turn downward under the action of gravity until it is in the state of being inclined downward. Then, the first telescopic device 36 drives the piston plate 361 to move upward to push the liquid collected in the sampling groove 35 upward and make it overflow from the upper end opening of the sampling groove 35 and flow downward along the connecting plate 37. The operator can collect the liquid in the sampling port 321 to realize sampling. The overall design is reasonable and is beneficial to the collection of the liquid in the sampling groove 35.

[0032] As a preferred embodiment, the inside of the sampling port 321 is detachably provided with a sampling box 4 for receiving the liquid flowing along the connecting plate 37.

[0033] In the above embodiment, after sampling is completed, the sampling port 321 is opened, the sampling box 4 is installed at the inner port thereof, and then the liquid in the sampling groove 35 is sequentially collected. After collection is completed, the sampling box 4 is removed for subsequent detection and analysis.

[0034] As a preferred embodiment, the upper end of the groove wall of the sampling groove 35 near the sampling port 321 is lower than the upper end of the other groove walls.

[0035] In the above embodiment, the height of the side wall of the sampling groove 35 where the connecting plate 37 is located is lower. When the piston plate 361 pushes the liquid upward, the liquid in the sampling groove 35 only flows out through the side where the connecting plate 37 is located, so that the overflowed liquid can smoothly flow out along the downwardly inclined connecting plate 37, improving the problem of small collection amount of liquid scattered everywhere.

[0036] In the present embodiment, the first telescopic device 36 and the second telescopic device 38 can both be a cylinder or a hydraulic cylinder of the prior art, which is connected to the top or side wall of the sampling groove 32 and then extends out.

[0037] In the present embodiment, the lifting mechanism 31 is a cylinder or a hydraulic cylinder.

[0038] In the present embodiment, the rotating device 33 is a servo motor or a stepping motor of the prior art.

[0039] As a preferred embodiment, the rotating frame 34 includes a rotating disc 341 and a plurality of connecting rods 342. The middle part of the rotating disc 341 is connected and fixed to the driving end of the rotating device 33. The plurality of connecting rods 342 correspond one-to-one to the plurality of sampling grooves 35. The connecting rods 342 are respectively distributed along the circumference of the rotating disc 341. One end of the connecting rod 342 is connected and fixed to the outer edge of the rotating disc 341, and the other end is rotationally connected to the corresponding sampling groove 35 through the rotating shaft.

[0040] In the above embodiment, the rotating frame 34 has a simple structure. The sampling groove 35 is installed through the connecting rod 342 corresponding one-to-one to the sampling groove 35, and the structure is more simple and compact.

[0041] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0042] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0043] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0045] In the description of the specification, the description using the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the present application. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the description herein of certain examples does not necessarily exclude these features, structures, materials, or characteristics from being used in other examples. Without intending to limit the scope of the application, examples of the application can be summarized as follows:

[0046] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be taken as limiting the present application, and that within the scope of the present application, those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments.

Claims

1. A high accuracy, wide range, dual-path, pulsed vane flowmeter characterized by: The utility model provides a kind of scraper flowmeter, including scraper flowmeter body (1), liquid inlet pipe (2) and sampling mechanism (3), the two sides of the scraper flowmeter body (1) are equipped with liquid inlet and liquid outlet respectively, the liquid inlet pipe (2) is horizontally arranged, one end is connected with the liquid inlet and communicates, the upper end of the liquid inlet pipe (2) is equipped with sampling port, the sampling mechanism (3) is installed in the sampling port, for sampling liquid that flows through the liquid inlet pipe (2);The sampling mechanism (3) includes lifting mechanism (31), sampling groove (32), rotating device (33), rotating frame (34) and multiple sampling grooves (35), the lower part of the sampling groove (32) is open, and is sealed in the sampling port, the upper part of the side wall of the sampling groove (32) is equipped with sampling port (321), the lifting mechanism (31) is connected with the upper end of the sampling groove (32), for driving the sampling groove (32) to move downwards, or to move upwards to expose the liquid inlet pipe (2) above the outside, the rotating device (33) is installed in the middle position of one end groove wall inside the sampling groove (32), and the driving end thereof extends to the middle part inside the sampling groove (32), the rotating frame (34) is connected with the driving end of the rotating device (33), the sampling groove (35) is distributed on the circle with the driving end as center respectively, the rotating frame (34) is respectively equipped with the rotating shaft corresponding to the sampling groove (35) horizontally, the sampling groove (35) is the groove body with upper part open, one end groove wall is rotationally connected with the corresponding rotating shaft, the rotating device (33) is used to drive the rotating frame (34) to drive multiple sampling grooves (35) to rotate, and can be rotated to the position on the side above close to the sampling port (321) respectively;The bottom inside or bottom of each sampling groove (35) is equipped with first telescopic device (36), the inside of the groove bottom of the sampling groove (35) is equipped with piston plate (361) with the sealing connection of its side wall, the telescopic end of the first telescopic device (36) extends into the groove wall of the sampling groove (35) and is connected with the piston plate (361), the upper end of the side groove wall of the sampling groove (35) close to the sampling port (321) is equipped with notch, the notch is hinged with the connecting plate (37) of curved arc type, the outside of the side groove wall of the sampling groove (35) close to the sampling port (321) is equipped with second telescopic device (38), the telescopic end of the second telescopic device (38) is upwards and contacts with the bottom of the connecting plate (37), the second telescopic device (38) is used to drive its telescopic end to retract downwards, so that the connecting plate (37) is turned down under the action of gravity, or drive its telescopic end to stretch upwards, to lift the connecting plate (37) and turn up, the first telescopic device (36) is used to drive the piston plate (361) to move upwards, so that the liquid collected in the sampling groove (35) gushes upwards and flows along the connecting plate (37) after turning down.

2. A high accuracy, wide range, dual-path, pulsed-plate flowmeter according to claim 1, characterized in that: One end of the sampling groove (35) is provided with a through hole, and the rotating shaft is inserted into the through hole and can rotate freely.

3. A high accuracy, wide range, dual-path, pulsed-plate flowmeter according to claim 1, wherein: A sampling box (4) for receiving liquid flowing along the connecting plate (37) is detachably arranged at the inner port of the sampling port (321).

4. A high accuracy, wide range, dual-path, pulsed-plate flowmeter according to claim 1, wherein: The upper end of the side wall of the sampling groove (35) near the sampling port (321) is lower than the upper end of the other side walls.

5. A high accuracy, wide range, dual-path, pulsed-plate flowmeter according to claim 1, wherein: The first telescopic device (36) and the second telescopic device (38) are both air cylinders or hydraulic cylinders.

6. A high accuracy, wide range, dual-path, pulsed-plate flowmeter according to claim 1, wherein: The lifting mechanism (31) is an air cylinder or a hydraulic cylinder.

7. A high accuracy, wide range, dual-path, pulsed-plate flowmeter according to claim 1, wherein: The rotating device (33) is an electric motor.

8. A high accuracy, wide range, dual-path, pulsed-plate flowmeter according to claim 1, wherein: The rotating frame (34) comprises a rotating disc (341) and a plurality of connecting rods (342). The middle part of the rotating disc (341) is connected and fixed with the driving end of the rotating device (33). The plurality of connecting rods (342) correspond to the plurality of sampling grooves (35) one by one. The connecting rods (342) are distributed along the circumference of the rotating disc (341) at intervals. One end of each connecting rod (342) is connected and fixed with the outer edge of the rotating disc (341), and the other end is rotationally connected with the corresponding sampling groove (35) through the rotating shaft.

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