Cylinder type differential pressure measuring device

Abstract

The utility model discloses a cylinder type pressure difference measuring device, which relates to the technical field of measuring equipment, and comprises a fixing device and a pipeline device, the fixing device comprises a fixing plate, a supporting plate and an arc-shaped plate, the side walls of the fixing plate, the supporting plate and the arc-shaped plate are connected to form a fan-shaped cylinder, and the fan-shaped cylinder is connected with the pipeline device. A plugging plate and a mounting plate are respectively fixed at the top and the bottom of the fan-shaped barrel, and a closed barrel is formed; the fixing plate is provided with two second through holes, and the two second through holes are used for liquid inlet and liquid outlet respectively; according to the pipeline device, multiple sets of pipelines are arranged along the plate face of a mounting plate in an array mode, and the two ends of the pipelines penetrate through the mounting plate and a fixing plate correspondingly; the bent section of the pipeline is provided with a differential pressure sensor; an anti-vibration strip is arranged between every two adjacent sets of pipelines, the two side walls of each anti-vibration strip are attached to the pipelines on the two sides correspondingly, and the anti-vibration strips are detachably connected with the fixing plates and / or the arc-shaped plates. According to the utility model, the design structure is reasonable, the disturbance of the temperature measurement probe to the flow field can be reduced, and the stability and precision of measurement can be improved by replacing the anti-vibration strip.

Description

Technical Field

[0001] This utility model relates to the technical field of measuring equipment, specifically a cylindrical differential pressure measuring device. Background Technology

[0002] A cylindrical differential pressure measuring device is a device used to measure the pressure difference of fluids. It is widely used in industrial process control, fluid mechanics experiments, energy system monitoring and other fields. By setting up a cylinder, it directly senses the pressure difference, reduces mechanical transmission parts and lowers the failure rate.

[0003] Existing technologies, including mechanical differential pressure gauges (such as U-tube manometers), diaphragm differential pressure sensors, and electronic pressure transmitters, rely on the height difference of liquid columns to measure pressure and obtain the pressure value inside the pipeline, which facilitates subsequent operations by operators.

[0004] Regarding the aforementioned technologies, the liquid inside the pipeline will generate a flow field when it is in a flowing state, which will affect the accuracy and precision of the measurement of the pipeline bends, resulting in certain deviations in the obtained data, and thus affecting the subsequent operations of the operators. Utility Model Content

[0005] 1) Technical problems to be solved

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a cylindrical differential pressure measuring device.

[0007] (ii) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a cylindrical differential pressure measuring device, comprising a fixing device and a pipeline device, characterized in that the fixing device comprises a fixing plate, a support plate and an arc plate, the side walls of the fixing plate, the support plate and the arc plate are connected to form a fan-shaped cylinder, and a sealing plate and an mounting plate are fixed at the top and bottom of the fan-shaped cylinder respectively, forming a closed cylinder;

[0009] The fixing plate is provided with two second through holes, which are used for liquid inlet and liquid outlet respectively;

[0010] Piping apparatus, the piping apparatus comprising:

[0011] The pipeline consists of multiple sets of pipelines arranged in an array along the surface of the mounting plate, with both ends of the pipeline passing through the mounting plate and the fixing plate, respectively; a differential pressure sensor is installed at the bend of the pipeline.

[0012] Vibration-resistant strips are provided between two adjacent sets of the pipes. The two side walls of the vibration-resistant strips are respectively attached to the pipes on both sides, and the vibration-resistant strips are detachably connected to the fixing plate and / or the arc plate.

[0013] Furthermore, the pipeline has multiple pressure tapping rings evenly distributed at the bends, and each pressure tapping ring has a differential pressure sensor installed in its inner cavity. The differential pressure sensor is fixedly connected to the pipeline.

[0014] Furthermore, the angle between the center of two adjacent pressure tapping rings and the bend in the pipeline is 15°.

[0015] Furthermore, each of the vibration-damping strips is equipped with a positioning component, the positioning component comprising:

[0016] The positioning ear is fixedly connected to the fixing plate;

[0017] A first connecting ear is detachably connected to the arc-shaped plate;

[0018] The second connecting ear is detachably connected to the arc-shaped plate;

[0019] One end of the vibration-damping strip is fixedly connected to the positioning ear, and the other end is detachably connected to the first connecting ear and / or the second connecting ear.

[0020] Furthermore, the angle between the first connecting ear, the positioning ear connecting line, and the fixing plate is 15°;

[0021] The angle between the second connecting ear, the positioning ear line, and the fixing plate is 45°.

[0022] Furthermore, both ends of the vibration-damping strip are provided with buffer pads, and the buffer pads are fixedly connected to the vibration-damping strip.

[0023] Furthermore, the arc-shaped plate is provided with a first through hole, and a first connecting pipe is provided in the first through hole. The first connecting pipe is fixedly connected to the arc-shaped plate, and a first flange ring is provided on the end face of the first connecting pipe away from the arc-shaped plate.

[0024] (iii) Beneficial effects:

[0025] Compared with existing technologies, this cylindrical differential pressure measuring device has the following advantages:

[0026] I. This utility model improves the flow stability in the two-bend pipe area by setting anti-vibration strips that can abut against the side wall of the pipeline, thus preventing vibration and reducing the accuracy of measurement. Combined with multi-point pressure tapping rings, it improves the accuracy of measurement.

[0027] Second, by incorporating a threaded sensor and vibration-damping strip, this utility model facilitates quick loading and unloading by operators, thereby improving their work efficiency. Attached Figure Description

[0028] Figure 1This is a first-view perspective three-dimensional structural diagram of the present invention;

[0029] Figure 2 This is a schematic diagram of the second-view three-dimensional structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the third-view three-dimensional structure of this utility model;

[0031] Figure 4 This is a cross-sectional view of the present invention.

[0032] In the diagram: 1. Fixing device; 11. Fixing plate; 12. Support plate; 13. Arc plate; 14. Sealing plate; 15. Mounting plate; 16. First through hole; 161. First connecting pipe; 162. First flange ring; 17. Second through hole; 171. Second connecting pipe; 172. Second flange ring; 18. First cable laying hole; 19. Second cable laying hole; 10. Third cable laying hole; 2. Pipeline device; 21. Pipeline; 22. Pressure tapping ring; 23. Differential pressure sensor; 24. Positioning assembly; 241. Positioning ear; 242. First connecting ear; 243. Second connecting ear; 244. Third connecting ear; 25. Vibration-resistant strip. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] like Figure 1-4 As shown, this utility model provides a technical solution: a cylindrical differential pressure measuring device, comprising...

[0035] Reference Figure 1 , Figure 2 and Figure 3 A cylindrical differential pressure measuring device includes a fixing device 1 and a pipeline device 2.

[0036] Reference Figure 1 , Figure 2 and Figure 3 The fixing device 1 includes a fixing plate 11 and a support plate 12. In this embodiment, both the fixing plate 11 and the support plate 12 are rectangular plates. Both the fixing plate 11 and the support plate 12 are vertically arranged and perpendicular to each other. The fixing plate 11 and the support plate 12 are fixedly connected by welding.

[0037] Reference Figure 1 , Figure 2 and Figure 3 The fixing device 1 also includes an arc plate 13, which is vertically arranged. The two ends of the arc plate 13 are fixedly connected to the fixing plate 11 and the support plate 12 by welding. In this embodiment, the structure enclosed by the fixing plate 11, the support plate 12 and the arc plate 13 has a cross section of a quarter circle in the horizontal direction.

[0038] Reference Figure 2 , Figure 3 and Figure 4 The fixing device 1 also includes a sealing plate 14, which is located at the bottom of the fixing plate 11. In this embodiment, the sealing plate 14 is preferably a fan-shaped plate, and the sealing plate 14 is fixedly connected to the fixing plate 11, the support plate 12 and the arc plate 13 by welding.

[0039] Reference Figure 2 , Figure 3 and Figure 4 The fixing device 1 also includes a mounting plate 15, which is located on top of the fixing plate 11. In this embodiment, the mounting plate 15 is preferably a fan-shaped plate, and the mounting plate 15 is fixedly connected to the fixing plate 11, the support plate 12 and the arc plate 13 by welding.

[0040] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment, the fixing plate 11, the support plate 12 and the arc plate 13 are preferably made of 304 stainless steel with a thickness of 8mm, and the sealing plate 14 and the mounting plate 15 are preferably made of 304 stainless steel with a thickness of 16mm.

[0041] Reference Figure 1 , Figure 2 and Figure 3 A first through hole 16 is provided horizontally through the middle of the arc plate 13. A first connecting pipe 161 is provided in the first through hole 16. The first connecting pipe 161 is preferably a hollow annular pipe. The first connecting pipe 161 and the first through hole 16 are coaxially arranged. The first connecting pipe 161 and the arc plate 13 are fixedly connected. A first flange ring 162 is provided on the end face of the first connecting pipe 161 away from the arc plate 13. The first flange ring 162 is coaxially fixedly connected to the first connecting pipe 161 by welding.

[0042] Reference Figure 2 , Figure 3 and Figure 4The fixing plate 11 has two second through holes 17 extending horizontally, and the two second through holes 17 are arranged sequentially in the vertical direction. Each second through hole 17 has a second connecting pipe 171 and a second flange ring 172 inside its cavity. In this embodiment, the second connecting pipe 171 is preferably a circular pipe. The second connecting pipe 171 and the second through hole 17 are coaxially arranged and fixedly connected to the fixing plate 11. The second flange ring 172 is located at the end of the second connecting pipe 171 away from the fixing plate 11 and is coaxially fixedly connected to the second connecting pipe 171. The two second connecting pipes 171 are used for liquid inlet and liquid outlet, respectively.

[0043] Reference Figure 1 , Figure 2 and Figure 3 The arc plate 13 has a first wire feeding hole 18 above and below the first through hole 16.

[0044] Reference Figure 1 , Figure 2 and Figure 3 The support plate 12 has two second wire-laying holes 19 extending horizontally, and the two second wire-laying holes 19 are arranged sequentially in the vertical direction.

[0045] Reference Figure 1 , Figure 2 and Figure 3 The fixing plate 11 is provided with two sets of third wire-laying holes 10 in the horizontal direction. Here, the two sets of third wire-laying holes 10 are arranged in the vertical direction, and each set of third wire-laying holes 10 is provided with two wire-laying holes.

[0046] Reference Figure 4 The pipeline device 2 is installed in the inner cavity of the fixing device 1. The pipeline device 2 includes multiple sets of pipelines 21. In this embodiment, the number of sets of pipelines 21 is preferably eight. The eight sets of pipelines 21 are arranged sequentially along the direction perpendicular to the surface of the support plate 12. Here, the number of pipelines 21 in each set is as follows: five, five, five, four, four, three, three and one.

[0047] Reference Figure 4 In this embodiment, the pipe 21 is preferably a semi-U-shaped pipe, wherein the vertical section of the pipe 21 passes through the mounting plate 15 in the vertical direction, and the bottom passes through the fixing plate 11 in the horizontal direction.

[0048] Reference Figure 4 The pipeline 21 is provided with pressure tapping rings 22 at intervals. Multiple pressure tapping rings 22 are arranged at 15° intervals along the bend of the pipeline 21 and are numbered P1-P8 in sequence. Each pressure tapping ring 22 is provided with a differential pressure sensor 23 in its inner cavity. In this embodiment, the differential pressure sensor 23 is selected with a range of 0-5KPa, an accuracy of 0.075%, and an output of 4-20mA / HART. The differential pressure sensor 23 is connected to the pipeline 21 by a threaded connection.

[0049] Reference Figure 4 Each of the two adjacent sets of positioning components 24 is provided with a positioning component 24. The positioning component 24 includes a positioning ear 241, a first connecting ear 242, a second connecting ear 243, and a third connecting ear 244. The positioning ear 241 is fixedly connected to the fixing plate 11 by screws. The first connecting ear 242 and the second connecting ear 243 are both fixed to the arc plate 13, and the angles of the lines connecting the first connecting ear 242, the second connecting ear 243, the third connecting ear 244 and the positioning ear 241 are 0°, 15°, and 45° respectively.

[0050] Reference Figure 4 The positioning component 24 also includes an anti-vibration strip 25. One end of the anti-vibration strip 25 is detachably connected to the positioning ear 241, and the other end is detachably connected to the first connecting ear 242 and / or the second connecting ear 243 and / or the third connecting ear 244. The sidewall of the anti-vibration strip 25 is attached to the pipeline 21.

[0051] Reference Figure 4 The anti-vibration strip 25 is attached to the end face of the pipe 21 and has a buffer pad. The buffer pad is fixedly connected to the anti-vibration strip 25 by screws.

[0052] The operating principle of a cylindrical differential pressure measuring device is as follows: The operator first connects the pipeline 21 and the fixing device 1. Then, according to the requirements, one end of the anti-vibration strip 25 is threaded to the positioning ear 241, and the other end is connected to the first connecting ear 242 or the second connecting ear 243 as needed. This connects the anti-vibration strip 25 and the fixing plate 11 while preventing the pipeline 21 from vibrating.

[0053] Subsequently, a corresponding number of differential pressure sensors 23 are installed in the corresponding pressure tapping rings 22 of the pipeline 21 to perform corresponding tests on the pipeline 21. The lines of the differential pressure sensors 23 are connected to external equipment through the first wire release hole 18, the second wire release hole 19 and the third wire release hole 10.

Claims

1. A cylindrical differential pressure measuring device, comprising a fixing device (1) and a pipeline device (2), characterized in that, The fixing device (1) includes a fixing plate (11), a support plate (12) and an arc plate (13). The side walls of the fixing plate (11), the support plate (12) and the arc plate (13) are connected to form a fan-shaped cylinder. The top and bottom of the fan-shaped cylinder are respectively fixed with a sealing plate (14) and an mounting plate (15) to form a closed cylinder. The fixing plate (11) is provided with two second through holes (17), which are used for liquid inlet and liquid outlet respectively; Pipeline assembly (2), the pipeline assembly (2) comprising: Pipeline (21), multiple sets of pipelines (21) are arranged in an array along the surface of the mounting plate (15), and the two ends of the pipeline (21) are respectively inserted into the mounting plate (15) and the fixing plate (11); a differential pressure sensor (23) is provided at the bend section of the pipeline (21); Vibration-resistant strip (25) is provided between two adjacent sets of the pipes (21). The two side walls of the vibration-resistant strip (25) are respectively attached to the pipes (21) on both sides, and the vibration-resistant strip (25) is detachably connected to the fixing plate (11) and / or the arc plate (13).

2. The cylindrical differential pressure measuring device according to claim 1, characterized in that: The pipeline (21) has multiple pressure tapping rings (22) evenly distributed in the bend section. Each pressure tapping ring (22) is equipped with a differential pressure sensor (23) in its inner cavity. The differential pressure sensor (23) is fixedly connected to the pipeline (21).

3. The cylindrical differential pressure measuring device according to claim 2, characterized in that: The angle between the two adjacent pressure tapping rings (22) and the center of the pipeline bend is 15°.

4. The cylindrical differential pressure measuring device according to claim 1, characterized in that: Each of the vibration-damping strips (25) is equipped with a positioning component (24), the positioning component (24) comprising: Positioning ear (241), the positioning ear (241) is fixedly connected to the fixing plate (11); The first connecting ear (242) and the arc plate (13) are detachably connected; The second connecting ear (243) is detachably connected to the arc-shaped plate (13); The third connecting ear (244) is detachably connected to the arc plate (13); One end of the vibration-damping strip (25) is fixedly connected to the positioning ear (241), and the other end is detachably connected to the first connecting ear (242) and / or the second connecting ear (243).

5. The cylindrical differential pressure measuring device according to claim 4, characterized in that: The angle between the line connecting the first connecting ear (242), the positioning ear (241), and the fixing plate (11) is 0°; The angle between the line connecting the second connecting ear (243), the positioning ear (241), and the fixing plate (11) is 15°. The angle between the line connecting the third connecting ear (244), the positioning ear (241), and the fixing plate (11) is 45°.

6. The cylindrical differential pressure measuring device according to claim 1, characterized in that: Both ends of the vibration-damping strip (25) are provided with buffer pads, and the buffer pads are fixedly connected to the vibration-damping strip (25).

7. The cylindrical differential pressure measuring device according to claim 1, characterized in that: The arc plate (13) is provided with a first through hole (16), and a first connecting pipe (161) is provided in the first through hole (16). The first connecting pipe (161) is fixedly connected to the arc plate (13), and a first flange ring (162) is provided on the end face of the first connecting pipe (161) away from the arc plate (13).

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