Low-error flowmeter applied to multiple media

Abstract

The utility model relates to the technical field of flow meters, in particular to a low-error flow meter for multi-medium application, which comprises a detection tube and three square grooves arranged on the top side of the peripheral side wall of the detection tube, each square groove is detachably connected with an outer fixing frame, a sliding plate is longitudinally and slidably arranged in each outer fixing frame in a penetrating manner, and a flow stabilizing plate is detachably mounted at the bottom end of each sliding plate. Arc-shaped toothed plates are connected to the positions, matched with the two sides of each flow stabilizing plate, of the inner peripheral side wall of the detection pipe, and detection assemblies are longitudinally and detachably inserted into the parts, located between the two outer fixing frames, of the top side of the peripheral side wall of the detection pipe. According to the utility model, a fluid medium is subjected to two times of flow detection in the detection pipe, and the flow stabilizing plate and the flow dividing plate at the corresponding position are used for stabilizing and dividing flow before each time of flow detection, so that the direct impact of the fluid medium on the detection assembly can be weakened; on the other hand, the flow rates of fluid media at different positions can be measured through two times of detection, and then the overall accuracy of the flowmeter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flow meters, and particularly relates to a low-error flow meter for multi-medium applications. Background Art

[0002] An ultrasonic flow meter is an instrument that measures the flow rate by detecting the action of fluid flow on an ultrasonic beam. According to the principle of signal detection, ultrasonic flow meters can be divided into methods such as propagation velocity difference method, beam offset method, Doppler method, cross-correlation method, spatial filtering method, and noise method, etc., and can perform multi-medium flow detection on fluid media such as air, natural gas, coal gas, and water. When an ultrasonic beam propagates in a certain fluid medium, the fluidity causes a slight change in the propagation time, and the change in its propagation time is proportional to the flow velocity of the fluid. From this, the flow velocity of the fluid can be obtained, and then the flow rate of the fluid within a certain period of time can be calculated.

[0003] For a low-error flow meter, the structure of the flow meter will have a greater impact on the stability of fluid flow, thereby affecting the accuracy of flow measurement. However, during the process of flow detection of different media by existing flow meters, the water flow velocity of some fluid media is relatively fast and the flow is relatively concentrated, that is, it will cause a large and unstable change in the flow velocity of the fluid, a large change in the contact time and contact speed with the detection component, making it easy to have errors in the detection at a single position, and further increasing the error of the flow meter.

[0004] Therefore, it is very necessary to invent a low-error flow meter for multi-medium applications to solve the above problems. Content of the Utility Model

[0005] To solve the deficiencies of the existing technology, the purpose of the utility model is to provide a low-error flow meter for multi-medium applications, which solves the problem that in the existing technology, the water flow velocity of some fluid media is relatively fast and the flow is relatively concentrated, that is, it will cause a large and unstable change in the flow velocity of the fluid, a large change in the contact time and contact speed with the detection component, making it easy to have errors in the detection at a single position, and further increasing the error of the flow meter.

[0006] To achieve the above objectives, the utility model adopts the following technical solutions:

[0007] A low-error flowmeter for multi-medium applications, comprising a detection tube and three square grooves opened at the top side of the peripheral side wall of the detection tube. An outer fixing frame is detachably connected to each square groove. A sliding plate longitudinally slides through the outer fixing frame. A flow stabilizing plate is detachably installed at the bottom end of the sliding plate. A plurality of flow dividing plates are connected to both the left and right side walls of the flow stabilizing plate located in the middle. A plurality of flow dividing plates are connected to the mutually remote side walls of the two flow stabilizing plates located at the edges. And arc-shaped toothed plates capable of performing medium flow division are connected to the positions on both sides of each flow stabilizing plate on the inner peripheral side wall of the detection tube. Detection components capable of extending into the detection tube and used for detecting the flow rate are longitudinally detachably inserted into the portions of the top side of the peripheral side wall of the detection tube located between the two outer fixing frames.

[0008] As a preferred solution of the present utility model, the top end of the outer fixing frame is an open end, and the cross-sectional dimension of the sliding plate is the same as the cross-sectional dimension of the inner wall of the outer fixing frame. And a sealing plate is detachably abutted against the top end of the outer fixing frame.

[0009] As a preferred solution of the present utility model, the middle of the top end of the sliding plate is rotationally abutted against a screw rod. The screw rod is threadedly passed through the middle of the sealing plate and extends above the sealing plate. And a rotating frame is installed at the top end of the screw rod.

[0010] As a preferred solution of the present utility model, a plurality of flow dividing holes are opened in the arc-shaped toothed plate.

[0011] As a preferred solution of the present utility model, jacks are opened in the portions of the top end of the peripheral side wall of the detection tube located between the two outer fixing frames. An outer fixing tube is detachably installed at the jacks. The detection component includes an insertion cylinder detachably clamped in the outer fixing tube and extending into the detection tube, a rotating cover threadedly sleeved on the outer periphery of the outer fixing tube, a connecting column arranged at the center of the bottom end of the rotating cover, and an ultrasonic transducer detachably installed at the bottom end of the connecting column and used for detecting the medium flow rate. And the connecting column and the ultrasonic transducer are both located inside the insertion cylinder.

[0012] As a preferred solution of the present utility model, a plurality of flow through holes for the medium to flow through are opened in the peripheral side wall of the insertion cylinder.

[0013] As a preferred solution of the present utility model, connecting flanges are installed at both the left end and the right end of the detection tube.

[0014] In the above technical solution, the technical effects and advantages provided by the present utility model:

[0015] In the present utility model, a plurality of flow dividing plates are connected to the left end of the flow stabilizing plate located at the left end of the detection tube, and a plurality of flow dividing plates are connected to the right end of the flow stabilizing plate located at the right end of the detection tube. Therefore, no matter whether the fluid enters from the left end or the right end of the detection tube, it will be decelerated and divided by the flow stabilizing plate and the flow dividing plate at the corresponding position. Moreover, the flow stabilizing and dividing area can be changed by controlling the depth of insertion of the flow stabilizing plate into the detection tube, thereby further decelerating and dividing the flow rate of the fluid medium, weakening the flow rate of the fluid medium directly impacting the detection component, and improving the flow rate detection accuracy of the detection component at a single position. For the fluid medium entering from one end of the detection tube, after being stabilized and divided by the flow stabilizing plate and the flow dividing plate on the corresponding side, the flow rate is detected by the detection component on this side. Subsequently, it is further stabilized and divided by the flow stabilizing plate and the flow dividing plate in the middle, and then the flow rate is detected again by the detection component on the other side. That is, the fluid medium undergoes two flow rate detections in the detection tube, and before each flow rate detection, there are flow stabilizing plates and flow dividing plates at the corresponding position for flow stabilization and division. This not only can weaken the direct impact of the fluid medium on the detection component, but also can measure the flow rates of the fluid medium at different positions through two detections respectively, and further improve the overall accuracy of the flowmeter by increasing the number of detections and mutual comparison. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic front view structure diagram of the present utility model;

[0018] Figure 3 is a schematic top view structure diagram of the present utility model;

[0019] Figure 4 For the present utility model Figure 3 is a schematic cross-sectional structure diagram at A-A in the present utility model.

[0020] Description of the reference numerals in the drawings:

[0021] 1, detection tube; 2, connecting flange; 3, square groove; 4, outer fixing frame; 5, sealing plate; 6, sliding plate; 7, flow stabilizing plate; 8, flow dividing plate; 9, arc-shaped toothed plate; 10, flow dividing hole; 11, screw; 12, rotating frame; 13, jack; 14, outer fixing tube; 15, inserting cylinder; 16, through hole; 17, rotating cover; 18, connecting column; 19, ultrasonic transducer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0023] The present utility model provides asFigures 1-4 A low-error flowmeter for multi-media applications as shown includes a detection tube 1 and three square grooves 3 opened on the top side of the peripheral side wall of the detection tube 1. An outer fixing frame 4 is detachably connected at each square groove 3. A slide plate 6 is longitudinally slidably inserted in the outer fixing frame 4. A flow stabilizing plate 7 is detachably installed at the bottom end of the slide plate 6. A plurality of flow dividing plates 8 are connected to both the left and right side walls of one flow stabilizing plate 7 located in the middle. A plurality of flow dividing plates 8 are connected to the mutually remote side walls of the two flow stabilizing plates 7 located at the edges. And arc-shaped tooth plates 9 capable of performing medium flow division are connected at the positions on the inner peripheral side wall of the detection tube 1 adapted to both sides of each flow stabilizing plate 7. Detection components that can extend into the detection tube 1 and are used for detecting the flow rate are longitudinally detachably inserted at the parts of the top side of the peripheral side wall of the detection tube 1 located between the two outer fixing frames 4.

[0024] The top end of the outer fixing frame 4 is an open end, and the cross-sectional dimension of the slide plate 6 is the same as the inner wall cross-sectional dimension of the outer fixing frame 4. And a sealing plate 5 is detachably abutted against the top end of the outer fixing frame 4. The middle part of the top end of the slide plate 6 is rotationally abutted against a screw rod 11. The screw rod 11 is threadedly inserted through the middle part of the sealing plate 5 and extends above the sealing plate 5. And a rotating frame 12 is installed at the top end of the screw rod 11. The cross-sectional dimension of the slide plate 6 being the same as the inner wall cross-sectional dimension of the outer fixing frame 4 can prevent the fluid medium flowing in the detection tube 1 from overflowing from the square groove 3.

[0025] A plurality of flow dividing holes 10 are opened in the arc-shaped tooth plate 9. The flow dividing holes 10 can increase the flow path of the fluid medium and prevent the fluid medium from directly impacting the detection components.

[0026] A jack 13 is opened at the part of the top side wall of the detection tube 1 located between the two outer fixing frames 4. An outer fixing tube 14 is detachably installed at the jack 13. The detection component includes an insertion cylinder 15 detachably clamped in the outer fixing tube 14 and extending into the detection tube 1, a rotary cover 17 threadedly sleeved on the outer periphery of the outer fixing tube 14, a connecting column 18 provided at the center of the bottom end of the rotary cover 17, and an ultrasonic transducer 19 detachably installed at the bottom end of the connecting column 18 and used for detecting the medium flow rate. And both the connecting column 18 and the ultrasonic transducer 19 are located inside the insertion cylinder 15. A plurality of flow through holes 16 for the medium to flow through are opened on the peripheral side wall of the insertion cylinder 15. The fluid medium enters the insertion cylinder 15 through the flow through holes 16, and the internal ultrasonic transducer 19 detects the flow rate. And the detection of the medium flow rate by the ultrasonic transducer 19 belongs to the mature existing technology and will not be elaborated here too much.

[0027] Connecting flanges 2 are installed at both the left end and the right end of the detection tube 1. The connecting flanges 2 can facilitate the connection of the detection tube 1 with the connecting pipeline of the fluid medium to be detected.

[0028] In the above technical solution, the technical effects and advantages provided by the present utility model are:

[0029] In the present utility model, a plurality of flow dividing plates 8 are connected to the left end of the flow stabilizing plate 7 located at the left end of the detection tube 1, and a plurality of flow dividing plates 8 are connected to the right end of the flow stabilizing plate 7 located at the right end of the detection tube 1. Therefore, no matter whether the fluid enters from the left end or the right end of the detection tube 1, it will be decelerated and divided by the flow stabilizing plate 7 and the flow dividing plates 8 at the corresponding positions. Moreover, the flow stabilizing and dividing area can be changed by controlling the depth of insertion of the flow stabilizing plate 7 into the detection tube 1, thereby further decelerating and dividing the flow rate of the fluid medium, weakening the flow rate of the fluid medium directly impacting the detection assembly, and improving the flow rate detection accuracy of the detection assembly at a single position. For the fluid medium entering from one end of the detection tube 1, after being stabilized and divided by the flow stabilizing plate 7 and the flow dividing plates 8 on the corresponding side, the flow rate is detected by the detection assembly on that side. Subsequently, it is further stabilized and divided by the flow stabilizing plate 7 and the flow dividing plates 8 in the middle, and then the flow rate is detected again by the detection assembly on the other side. That is, the fluid medium undergoes two flow rate detections in the detection tube 1, and before each flow rate detection, there are the flow stabilizing plate 7 and the flow dividing plates 8 at the corresponding positions for flow stabilization and division. This can not only weaken the direct impact of the fluid medium on the detection assembly, but also measure the flow rates of the fluid medium at different positions through two detections, and then improve the overall accuracy of the flowmeter by increasing the number of detections and mutual comparison.

[0030] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present utility model, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present utility model.

Claims

1. A low-error flowmeter for multi-media applications, characterized in that: It includes a detection tube (1) and three square grooves (3) opened at the top side of the peripheral side wall of the detection tube (1). An outer fixing frame (4) is detachably connected to each of the square grooves (3). A slide plate (6) is longitudinally slidably inserted into the outer fixing frame (4). A flow stabilizing plate (7) is detachably installed at the bottom end of the slide plate (6). A plurality of flow dividing plates (8) are connected to both the left and right side walls of the flow stabilizing plate (7) located in the middle. A plurality of flow dividing plates (8) are connected to the side walls away from each other of the two flow stabilizing plates (7) located at the edges. Arc-shaped toothed plates (9) capable of performing medium flow division are connected to the positions on both sides of each flow stabilizing plate (7) at the inner peripheral side wall of the detection tube (1). Detection components that can be longitudinally detachably inserted and used for detecting the flow rate and extending into the detection tube (1) are detachably inserted into the part of the top side of the peripheral side wall of the detection tube (1) located between the two outer fixing frames (4).

2. The low-error flowmeter for multi-media applications according to claim 1, wherein: The top end of the outer fixing frame (4) is an open end, and the cross-sectional dimension of the slide plate (6) is the same as the cross-sectional dimension of the inner wall of the outer fixing frame (4). A sealing plate (5) is detachably abutted against the top end of the outer fixing frame (4).

3. The low-error flowmeter for multi-media applications according to claim 2, characterized in that: The middle part of the top end of the slide plate (6) is rotatably abutted against a screw rod (11). The screw rod (11) is threadedly inserted through the middle part of the sealing plate (5) and extends above the sealing plate (5). A rotating frame (12) is installed at the top end of the screw rod (11).

4. A low-error flowmeter for multi-media applications according to claim 1, characterized in that: A plurality of flow dividing holes (10) are opened in the arc-shaped toothed plate (9).

5. The low-error flowmeter for multi-media applications according to claim 1, wherein: A jack (13) is opened at the part of the top end of the peripheral side wall of the detection tube (1) located between the two outer fixing frames (4). An outer fixing tube (14) is detachably installed at the jack (13). The detection component includes an insertion cylinder (15) detachably clamped in the outer fixing tube (14) and extending into the detection tube (1), a rotary cover (17) threadedly sleeved on the outer periphery of the outer fixing tube (14), a connecting column (18) provided at the center of the bottom end of the rotary cover (17), and an ultrasonic transducer (19) detachably installed at the bottom end of the connecting column (18) and used for detecting the medium flow rate. The connecting column (18) and the ultrasonic transducer (19) are both located inside the insertion cylinder (15).

6. The low-error flowmeter for multi-media applications according to claim 5, wherein: A plurality of circulation holes (16) for the medium to flow through are opened in the peripheral side wall of the insertion cylinder (15).

7. A low-error flowmeter for multi-media applications according to claim 1, characterized in that: Connecting flanges (2) are installed at both the left end and the right end of the detection tube (1).

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