Measuring tube of orifice plate type metal tube float flowmeter
By using a combination design of connecting flange, inner hole spring, pipe cylinder and orifice plate in the orifice plate in the orifice plate type metal pipe float flowmeter, the problems of float stuck, leakage and high maintenance costs caused by welding connection are solved, and the problem of high maintenance costs is achieved. The removability of each component and the ease of maintenance.
Patent Information
- Application Number
- CN202420339583.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-23
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-02-23
AI Technical Summary
Existing orifice plate metal pipe float flowmeters are prone to float stuck, leaks and high maintenance costs after welding.
The combination design of the connecting flange, inner hole spring, pipe cylinder and orifice plate is adopted to remove and install the hoisting parts through machining to avoid the non-detachable problems caused by welding connections.
The detachability of each component is achieved, the maintenance process is simplified, the maintenance cost and time is reduced, and the float is stuck and leaked.
Smart Images
Figure CN222460771U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring tubes of float flowmeters, in particular to a measuring tube of an orifice plate type metal tube float flowmeter. Background Art
[0002] The prior art orifice plate type metal tube flow float flowmeter has a countersunk hole in the middle of the tube, the orifice plate is installed in the middle of the tube and welded to the orifice plate through the countersunk hole, the connecting flange is welded to the tube after being matched, and the lower limit ring is installed in the middle of the tube and welded.
[0003] In the above-mentioned prior art orifice plate type metal tube flow float flowmeter, the float moves up and down in the measuring tube under the action of the upward flow of the medium (the magnetic steel installed on the float cooperates with the magnetic steel on the rotating shaft of the meter head to drive the rotating shaft of the meter head and the pointer to rotate and display the flow), and the conical part on the float cooperates with the orifice plate in the measuring tube to change the flow area to measure the flow. In the prior art, the orifice plate and the tube are welded by countersinking. After welding, the orifice plate is deformed, which will cause the float to get stuck. It is necessary to grind the inner hole of the orifice plate to increase the starting flow; the orifice plate and the tube are welded by countersinking, and there is a certain probability that leakage will occur at the welding point; if there is an error in the processing of the inner hole of the orifice plate or the inner hole of the orifice plate of the instrument to be repaired is seriously worn, it cannot be replaced, and only a new measuring tube can be replaced; the structural design of the lower limit ring itself is easy to deform under stress. When the lower limit ring and the tube are connected by welding, it is easy to deform, which will cause the float to get stuck. In the case of light correction, the lower limit ring needs to be removed and replaced with a new limit ring for re-welding; the maintenance cost is high, time-consuming and laborious.
[0004] In order to solve the above problems, we propose a measuring tube of an orifice plate type metal tube float flowmeter. Utility Model Content
[0005] The utility model aims to provide a measuring tube of an orifice plate type metal tube float flowmeter to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a measuring tube of an orifice plate type metal tube float flowmeter, comprising an inner hole retaining spring, a connecting flange, a tube and an orifice plate;
[0007] The connecting flange is provided with an inner stop groove of the flange; the connecting flanges are respectively connected to the two ends of the tube; one end of the tube is connected to the inner stop groove of the connecting flange; the inner wall of the tube is provided with a first inner stop groove; the orifice plate is arranged in the first inner stop groove of the tube; the bottom of the tube is also provided with a second inner stop groove; the inner hole retaining ring is arranged in the second inner stop groove of the tube.
[0008] Preferably, a positioning sleeve is provided at the bottom of the orifice plate.
[0009] Preferably, the lower limit ring is provided at the bottom of the positioning sleeve.
[0010] Preferably, a lower limit sleeve is provided at the bottom of the lower limit ring.
[0011] Preferably, the lower limit ring is provided with a plurality of fan-shaped holes.
[0012] Preferably, the inner diameter of the connecting flange is larger than the inner diameter of the tube.
[0013] Compared with the prior art, the utility model has the following beneficial effects: the measuring tube of the orifice plate type metal tube float flowmeter can avoid the problem of non-detachable components caused by welding in the prior art. The utility model is easy to manufacture, and each component can be machined, which is easy to process. During maintenance, each component can be disassembled, and it can truly repair the damaged part, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 It is a schematic diagram of the structure of the lower limit moving ring in the utility model.
[0016] In the figure: 1-inner hole retaining ring, 2-connecting flange, 3-lower limit sleeve, 4-lower limit ring, 5-positioning sleeve, 6-tube, 7-orifice plate. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] See also Figure 1 , Figure 2 The utility model provides a technical solution: a measuring tube of an orifice plate type metal tube float flowmeter, comprising an inner hole retaining spring 1, a connecting flange 2, a tube 6 and an orifice plate 7.
[0019] The connecting flange 2 is provided with an inner stop groove of the flange. The connecting flange 2 is connected to both ends of the tube 6. One end of the tube 6 is connected to the inner stop groove of the connecting flange 2. The inner side wall of the tube 6 is provided with a first inner stop groove. The orifice plate 7 is provided in the first inner stop groove of the tube 6. The bottom of the tube 6 is also provided with a second inner stop groove. The inner hole retaining ring 1 is provided in the second inner stop groove of the tube 6.
[0020] Furthermore, a positioning sleeve 5 is provided at the bottom of the orifice plate 7 .
[0021] Furthermore, the bottom of the positioning sleeve 5 is provided with the lower limit ring 4 .
[0022] Furthermore, a lower limit sleeve 3 is provided at the bottom of the lower limit ring 4 .
[0023] Furthermore, the lower limit ring 4 is provided with a plurality of fan-shaped holes. The fan-shaped holes are used to pass liquid. Traditional circular holes will increase resistance and affect the effect. The fan-shaped holes increase the area of the holes while ensuring support, thereby ensuring the passage of liquid.
[0024] Furthermore, the inner diameter of the connecting flange 2 is larger than the inner diameter of the tube 6. This arrangement allows the internal components to be disassembled without disassembling the connecting flange 2.
[0025] The orifice plate 7 is provided with an inner hole. A movable ring hole is provided at the center of the lower limit movable ring 4. The inner hole of the orifice plate 7 and the movable ring hole of the lower limit movable ring 4 must be concentric, otherwise the equipment cannot operate. In the prior art, the lower limit movable ring and the tube are welded, which can easily cause the inner hole of the orifice plate 7 and the movable ring hole of the lower limit movable ring 4 to be not concentric during connection, resulting in defective products. However, the lower limit movable ring 4 of the present application only needs to be pushed into the inner cavity of the tube 6. The lower limit sleeve 3, the lower limit movable ring 4 and the positioning sleeve 5 are all against the inner cavity of the tube 6 and are in an interference fit. While ensuring a tight connection, it can also ensure that the inner hole of the orifice plate 7 is concentric with the movable ring hole of the lower limit movable ring 4.
[0026] During installation, first push the orifice plate 7 from the bottom of the tube 6, and then push the positioning sleeve 5. Then push the lower limit ring 4 into the tube 6 to ensure that the ring hole of the lower limit ring 4 is concentric with the inner hole of the orifice plate 7. Continue to push the lower limit sleeve 3 into the tube 6. Finally, clamp the inner hole retaining ring 1 to achieve the positioning effect.
[0027] When disassembling, it is only necessary to pull out the inner hole retaining ring 1, and then enter from the top of the tube 6 through a push rod and press down the orifice plate 7 to achieve disassembly.
[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A measuring tube of an orifice plate type metal tube float flowmeter, characterized in that: It comprises an inner hole retaining ring (1), a connecting flange (2), a tube (6) and an orifice plate (7); The connecting flange (2) is provided with an inner stop groove of the flange; the two ends of the tube (6) are respectively connected to the connecting flange (2); one end of the tube (6) is connected to the inner stop groove of the connecting flange (2); the inner wall of the tube (6) is provided with a first inner stop groove; the orifice plate (7) is arranged in the first inner stop groove of the tube (6); the bottom of the tube (6) is also provided with a second inner stop groove; the inner hole retaining ring (1) is arranged in the second inner stop groove of the tube (6).
2. The measuring tube of the orifice plate type metal tube float flowmeter according to claim 1, characterized in that: A positioning sleeve (5) is provided at the bottom of the orifice plate (7).
3. The measuring tube of the orifice plate type metal tube float flowmeter according to claim 2, characterized in that: A lower limit ring (4) is provided at the bottom of the positioning sleeve (5).
4. The measuring tube of the orifice plate type metal tube float flowmeter according to claim 3, characterized in that: A lower limit sleeve (3) is provided at the bottom of the lower limit ring (4).
5. The measuring tube of the orifice plate type metal tube float flowmeter according to claim 3, characterized in that: The lower limit ring (4) is provided with a plurality of fan-shaped holes.
6. The measuring tube of the orifice plate type metal tube float flowmeter according to claim 1, characterized in that: The inner diameter of the connecting flange (2) is larger than the inner diameter of the tube (6).