Plug-in type positive force bar flowmeter

Abstract

The utility model relates to the technical field of flow meters, and discloses a plug-in type positive force bar flow meter which comprises a differential pressure transmitter, a rubber sealing ring is fixedly installed on the outer surface of the differential pressure transmitter, a sleeve is arranged on the lower surface of the differential pressure transmitter, a detection mechanism is arranged on the differential pressure transmitter, and a plug-in type positive force bar flow meter is arranged on the sleeve. And the detection mechanism comprises a second connecting plate, a ball valve, a detection probe, a slot, a clamping hole, a sealing groove, a rubber sealing ring, four hollow columns, four springs, four circular rings, four fixing sticks and eight grooves. The differential pressure transmitter can be conveniently maintained by adopting the split type structure, and compared with a traditional flange and bolt structure connection mode, the clamping connection mode is high in disassembly and assembly efficiency, the LiBa flow meter can be conveniently installed, debugged and maintained, and the reliability of the differential pressure transmitter is improved. And after installation, the overall sealing performance of the positive force bar flowmeter is improved through the rubber sealing ring and the sealing groove.

Description

Technical Field

[0001] The utility model relates to the technical field of flow meters, in particular to an inserted-type Zhengliba flow meter. Background Art

[0002] The working principle of the inserted-type Zhengliba flow meter is based on Faraday's law of electromagnetic induction. In an electromagnetic flow meter, the conductive medium in the measuring tube is equivalent to the conductive metal rod in Faraday's experiment, and two electromagnetic coils at the upper and lower ends generate a constant magnetic field. When a conductive medium flows through, an induced voltage will be generated for flow monitoring.

[0003] The accurate detection of flow is the primary basis for fair and just metering settlement. The gas flow is greatly affected by temperature and pressure. When using a flow meter to measure the flow, if the temperature and pressure compensation are not considered, the obtained result will be very different from the correct result. Therefore, correct temperature and pressure compensation must be carried out to obtain correct gas flow measurement data. If the components installed in the pipeline are used to collect the temperature and pressure signals, and the flow computer such as PTB2000F is used to perform the compensation operation of the fluid density and then calculate the flow, its advantage is that the split structure is simple, and the disadvantage is that the installation form is scattered. Installing a temperature or pressure sensor on the pipeline requires additional drilling and welding fixation. At the same time, the increase in components, connectors, etc. makes the debugging and maintenance of the entire system very troublesome. In view of this, an inserted-type Zhengliba flow meter is proposed. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides an inserted-type Zhengliba flow meter, which solves the problems of inconvenient installation, debugging and maintenance of the inserted-type Zhengliba flow meter.

[0006] (2) Technical Solutions

[0007] To achieve the purpose of facilitating the installation, debugging and maintenance of the inserted-type Zhengliba flow meter, the utility model provides the following technical solutions: an inserted-type Zhengliba flow meter, including a differential pressure transmitter, a rubber sealing ring is fixedly installed on the outer surface of the differential pressure transmitter, and a sleeve is arranged on the lower surface of the differential pressure transmitter;

[0008] Among them, a detection mechanism is arranged on the differential pressure transmitter. The detection mechanism includes a second connecting plate, a ball valve, a detection probe, a slot, a card hole, a sealing groove, a rubber sealing ring, four hollow columns, four springs, four rings, four fixing rods, eight grooves, four pull rings, eight round holes and eight round beads.

[0009] Preferably, the four slots are opened on the upper surface of the second connecting plate, and the eight card holes are respectively opened on the inner surfaces of the four slots;

[0010] Among them, the sealing groove is formed on the inner surface of the sleeve.

[0011] Preferably, the four hollow columns are fixedly installed on the inner surface of the first connecting plate, the four springs are respectively fixedly installed in the inner walls of the four hollow columns, and the four rings are respectively fixedly installed at the lower ends of the four springs.

[0012] Preferably, the four fixing rods are respectively fixedly installed on the inner surfaces of the four rings, and the four pull rings are respectively fixedly installed at the upper ends of the four fixing rods;

[0013] Among them, the eight grooves are respectively formed on the outer surfaces of the four fixing rods.

[0014] Preferably, the eight circular holes are respectively formed on the outer surfaces of the four hollow columns, and the eight spherical beads are arranged on the inner surfaces of the eight circular holes.

[0015] Preferably, the ball valve is fixedly installed on the outer surface of the sleeve, and the detection probe is fixedly installed on the lower surface of the sleeve.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present utility model provides an insertion type positive flowmeter, which has the following beneficial effects:

[0018] 1. For this insertion type positive flowmeter, the differential pressure transmitter can be installed by means of clamping. The split structure facilitates the maintenance of the differential pressure transmitter. Moreover, compared with the traditional connection method of flange and bolt structure, the clamping connection method has high disassembly and assembly efficiency, which is convenient for the installation, debugging and maintenance of the positive flowmeter. After installation, the overall sealing performance of the positive flowmeter is improved by the rubber sealing ring and the sealing groove.

[0019] 2. For this insertion type positive flowmeter, the conical detection probe is adopted instead of the circular one, which can measure a variety of media, has a wide application range, high precision, large range ratio, the pressure tapping holes of the probe are inherently anti-blocking, the measurement signal is stable, the fluctuation is small, and it is convenient for detection. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the insertion type positive flowmeter of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the first connecting plate of the present utility model;

[0022] Figure 3 is the present utility model Figure 2 the enlarged view of the structure at A in;

[0023] Figure 4 is a schematic structural diagram of the second connecting plate of the present utility model.

[0024] In the figure: 1. Differential pressure transmitter; 2. First connecting plate; 3. Second connecting plate; 4. Sleeve; 5. Ball valve; 6. Detection probe; 7. Slot; 8. Card hole; 9. Sealing groove; 10. Rubber sealing ring; 11. Hollow column; 12. Spring; 13. Ring; 14. Fixed rod; 15. Groove; 16. Pull ring; 17. Round hole; 18. Round bead. Specific implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1-4 , the present invention provides a new technical solution: an insertion type positive pressure bar flowmeter, including a differential pressure transmitter 1, a rubber sealing ring 10 is fixedly installed on the outer surface of the differential pressure transmitter 1, a first connecting plate 2 is fixedly installed on the lower surface of the differential pressure transmitter 1, and a sleeve 4 is arranged on the lower surface of the differential pressure transmitter 1;

[0027] Among them, a detection mechanism is arranged on the differential pressure transmitter 1. The detection mechanism includes a second connecting plate 3, a ball valve 5, a detection probe 6, a slot 7, a card hole 8, a sealing groove 9, a rubber sealing ring 10, four hollow columns 11, four springs 12, four rings 13, four fixed rods 14, eight grooves 15, four pull rings 16, eight round holes 17 and eight round beads 18.

[0028] Further, four slots 7 are opened on the upper surface of the second connecting plate 3, and eight card holes 8 are respectively opened on the inner surfaces of the four slots 7;

[0029] Among them, the sealing groove 9 is opened on the inner surface of the sleeve 4.

[0030] Further, four hollow columns 11 are fixedly installed on the inner surface of the first connecting plate 2, four springs 12 are respectively fixedly installed in the inner walls of the four hollow columns 11, and four rings 13 are respectively fixedly installed at the lower ends of the four springs 12.

[0031] Further, four fixed rods 14 are respectively fixedly installed on the inner surfaces of the four rings 13, and four pull rings 16 are respectively fixedly installed at the upper ends of the four fixed rods 14;

[0032] Among them, eight grooves 15 are respectively opened on the outer surfaces of the four fixed rods 14.

[0033] Further, eight round holes 17 are respectively formed on the outer surfaces of the four hollow columns 11, and eight round beads 18 are arranged on the inner surfaces of the eight round holes 17.

[0034] Further, the ball valve 5 is fixedly installed on the outer surface of the sleeve 4, and the detection probe 6 is fixedly installed on the lower surface of the sleeve 4;

[0035] When the plug-in positive pressure bar flowmeter is in use, by pulling the pull ring 16, the pull ring 16 drives the fixing rod 14 fixedly installed on the lower surface to move upward. The fixing rod 14 drives the ring 13 fixedly installed on the outer surface to move upward. The ring 13 applies pressure to the spring 12 fixedly installed on the upper surface, causing it to contract. At this time, the two grooves 15 formed on the outer surface of the fixing rod 14 are aligned with the two round holes 17 formed on the outer surface of the hollow column 11. At this time, the round beads 18 arranged in the two round holes 17 are no longer subjected to the pressing force applied by the fixing rod 14. At this time, the round beads 18 contract into the hollow column 11. At this time, by inserting the hollow column 11 into the slot 7 formed on the upper surface of the second connecting plate 3, at this time, no pulling force is applied to the pull ring 16, and at the same time, the spring 12 is no longer stressed. At this time, the spring 12 expands. The spring 12 applies a downward thrust to the ring 13 fixedly installed at the lower end. At this time, the ring 13 drives the fixing rod 14 fixedly installed on the inner surface to move downward. At this time, the fixing rod 14 impacts the two round beads 18 and applies a thrust force to the two round beads 18 on the opposite surface, causing them to protrude from the hollow column 11 and be snap-fitted into the clamping holes 8 formed on the inner wall of the slot 7 for fixing. At this time, the installation is completed. And when installing, the rubber sealing ring 10 fixedly installed on the outer surface of the differential pressure transmitter 1 is filled into the groove 15 formed on the inner surface of the sleeve 4 for sealing treatment to maintain the sealing performance of the positive pressure bar flowmeter. At this time, it can be used for the detection probe 6 to detect. The fixed detection head of the present utility model is not arranged in a round bead shape, but in a conical surface. The fluid separation point of the round probe is not fixed, and as a result, the flow coefficient K cannot be accurately obtained. By adopting the conical detection probe 6, various media can be measured, the application range is wide, the accuracy is high, the range ratio is large, the pressure tapping holes of the probe are inherently anti-clogging, the measurement signal is stable, and the fluctuation is small;

[0036] For the plug-in positive pressure bar flowmeter, the differential pressure transmitter 1 can be installed by a snap-fit method. The split structure can facilitate the maintenance of the differential pressure transmitter 1. And by adopting the snap-fit connection method, compared with the traditional connection method of the flange and bolt structure, this method has a high disassembly and assembly efficiency, can facilitate the installation, debugging and maintenance of the positive pressure bar flowmeter. And after installation, the overall sealing performance of the positive pressure bar flowmeter is improved by the rubber sealing ring 10 and the sealing groove 9. And for this plug-in positive pressure bar flowmeter, the detection probe 6 is not round, various media can be measured, the application range is wide, the accuracy is high, the range ratio is large, the pressure tapping holes of the probe are inherently anti-clogging, the measurement signal is stable, and the fluctuation is small, which is convenient for detection.

[0037] Working principle: When the plug-in positive pressure bar flowmeter is in use, by pulling the pull ring 16, the pull ring 16 drives the fixed rod 14 fixedly installed on the lower surface to move upward. The fixed rod 14 drives the ring 13 fixedly installed on the outer surface to move upward. The ring 13 exerts pressure on the spring 12 fixedly installed on the upper surface, causing it to contract. At this time, the two grooves 15 opened on the outer surface of the fixed rod 14 are aligned with the two circular holes 17 opened on the outer surface of the hollow column 11. At this time, the spherical beads 18 arranged in the two circular holes 17 are no longer subjected to the pressure applied by the fixed rod 14. At this time, the spherical beads 18 contract into the hollow column 11. At this time, by inserting the hollow column 11 into the slot 7 opened on the upper surface of the second connecting plate 3, at this time, no pulling force is applied to the pull ring 16, and at the same time, the spring 12 is no longer stressed. At this time, the spring 12 expands, and the spring 12 exerts a downward thrust on the ring 13 fixedly installed at the lower end. At this time, the ring 13 drives the fixed rod 14 fixedly installed on the inner surface to move downward. At this time, the fixed rod 14 impacts the two spherical beads 18 and applies a thrust on the two spherical beads 18 on the opposite side, causing them to protrude from the hollow column 11 and be snap-fitted into the locking holes 8 opened on the inner wall of the slot 7 for fixation. At this time, the installation is completed. And when installing, the rubber sealing ring 10 fixedly installed on the outer surface of the differential pressure transmitter 1 is filled into the groove 15 opened on the inner surface of the sleeve 4 for sealing treatment to maintain the sealing performance of the positive pressure bar flowmeter. At this time, it can be used for the detection probe 6 to detect. The fixed detection head of the present utility model is not arranged in a spherical shape, but in a conical surface. The fluid separation point of the circular probe is not fixed, and as a result, the flow coefficient K cannot be accurately obtained. By using the conical detection probe 6, a variety of media can be measured, with a wide application range; high precision and a large range ratio; the pressure tapping holes of the probe are inherently anti-blocking, and the measurement signal is stable with small fluctuations.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An insertion type positive bar flow meter, comprising a differential pressure transmitter (1), wherein a rubber sealing ring (10) is fixedly mounted on the outer surface of the differential pressure transmitter (1), and characterized in that: A sleeve (4) is provided on the lower surface of the differential pressure transmitter (1); The differential pressure transmitter (1) is provided with a detection mechanism, which comprises a second connecting plate (3), a ball valve (5), a detection probe (6), a slot (7), a clamping hole (8), a sealing groove (9), a rubber sealing ring (10), four hollow columns (11), four springs (12), four circular rings (13), four fixing rods (14), eight grooves (15), four pull rings (16), eight circular holes (17) and eight round balls (18).

2. The insertion type positive bar flow meter according to claim 1, characterized in that: The four slots (7) are provided on the upper surface of the second connecting plate (3), and the eight clamping holes (8) are respectively provided on the inner surfaces of the four slots (7); The sealing groove (9) is provided on the inner surface of the sleeve (4).

3. The insertion type positive bar flow meter according to claim 1, characterized in that: The four hollow columns (11) are fixedly mounted on the inner surface of the first connecting plate (2), the four springs (12) are respectively fixedly mounted in the inner walls of the four hollow columns (11), and the four rings (13) are respectively fixedly mounted on the lower ends of the four springs (12).

4. The insertion type positive bar flow meter according to claim 1, characterized in that: The four fixing rods (14) are respectively fixedly mounted on the inner surfaces of the four circular rings (13), and the four pull rings (16) are respectively fixedly mounted on the upper ends of the four fixing rods (14); Among them, eight grooves (15) are respectively opened on the outer surfaces of the four fixing rods (14).

5. The insertion type positive bar flow meter according to claim 1, characterized in that: The eight circular holes (17) are respectively opened on the outer surfaces of the four hollow columns (11), and the eight round balls (18) are arranged on the inner surfaces of the eight circular holes (17).

6. The insertion type positive bar flow meter according to claim 1, characterized in that: The ball valve (5) is fixedly mounted on the outer surface of the sleeve (4), and the detection probe (6) is fixedly mounted on the lower surface of the sleeve (4).

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