Perforated plate balance type differential pressure flowmeter
By introducing a throttling adjustment structure of a multi-porous plate balanced differential pressure flowmeter into the flowmeter, the problem of blockage of standard orifice plate flowmeters when measuring impurity media is solved, and the accurate detection and multiple detection capabilities of fluids are achieved. Ensures detection accuracy and durability.
Patent Information
- Application Number
- CN202420062039.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-11
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-01-11
AI Technical Summary
Standard orifice flowmeters are prone to clogging when measuring impurity-containing media, which cannot effectively solve this problem.
A multi-hole plate balanced differential pressure flowmeter is designed, using a detection flow tube, a detection voltage divider, a pair of L-shaped detection shaft tubes and a differential pressure transmitter. The throttling adjustment structure includes a convex expansion block, The arc expansion block, spider web shunt tube, inflatable tube, inflatable air bag and other components realize the adjustment and sealing of the number of throttle holes to ensure accurate fluid detection.
Through the expansion sealing and magnetic adsorption effect adjustment of the throttling adjustment structure, multiple detections of different media are achieved, ensuring the detection accuracy and durability of the flowmeter, and avoiding the occurrence of blockage problems.
Smart Images
Figure CN222279834U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of differential pressure flowmeters, in particular to a porous plate balanced differential pressure flowmeter. Background Art
[0002] The measurement principle of the standard orifice flowmeter is based on the flow continuity equation (law of conservation of mass) and the Bernoulli equation (law of conservation of energy). When the fluid filling the pipeline flows through the throttling device in the pipeline, the fluid forms a local contraction at the throttling device, so the flow rate increases and the static pressure decreases, so a pressure difference is generated before and after the throttling device. The flow value is obtained according to the square root of the flow rate and the differential pressure. However, the standard orifice includes a throttling hole in the middle, which has many problems during use. At the same time, it is easy to get blocked when measuring media containing impurities. In view of this, in-depth research on the above problems has led to the creation of this case. Utility Model Content
[0003] To achieve the above purpose, the utility model is implemented through the following technical solutions: a porous plate balanced differential pressure flowmeter, comprising: a detection flow tube, a detection pressure dividing disc, a pair of L-shaped detection shaft tubes and a differential pressure transmitter, the detection pressure dividing disc is installed on the inner side of the detection flow tube, the pair of L-shaped detection shaft tubes are respectively inserted on both sides of the detection flow tube, the differential pressure transmitter is installed on the pair of L-shaped detection shaft tubes, and a throttling adjustment structure is installed on the detection pressure dividing disc;
[0004] The throttling adjustment structure comprises: a plurality of convex telescopic extension blocks, a plurality of arc extension blocks, a spider web shunt pipe, an inflatable pipe, a plurality of inflatable air bags, an inflatable pump, a pair of concave limit arc blocks, a convex arc rotating block, a rotating gear, a rotating driving machine, a rotating arc gear bar, a plurality of metal drainage rods, a plurality of arc adsorption magnets, a plurality of adsorption magnets and a plurality of annular set rubber strips;
[0005] The detection pressure dividing disc is provided with a plurality of throttling holes, and a plurality of the throttling holes are provided with a plurality of convex telescopic grooves and a plurality of concave arc grooves. A plurality of the convex telescopic extension blocks are respectively movably inserted into the inner sides of a plurality of the convex telescopic grooves, and a plurality of the arc extension blocks are respectively installed on a plurality of the convex telescopic extension blocks. The spider web shunt tube is inserted into the detection pressure dividing disc, and the inflation tube is inserted into the detection flow tube, the detection pressure dividing disc and the spider web shunt tube. A plurality of the inflatable airbags are respectively installed on the inner sides of a plurality of the convex telescopic grooves, and a plurality of the inflatable airbags are connected to the spider web shunt tube. A pair of the concave limiting arc blocks are relatively and parallelly installed on the outer sides of the detection flow tube. The convex arc rotating block is movably inserted into the inner side of a pair of concave limiting arc blocks, the rotating driving machine is installed on the outer side of the detection flow tube, the rotating arc rack is installed on the convex arc rotating block, the rotating gear is installed on the driving end of the rotating driving machine, and the rotating gear is meshed with the rotating arc gear bar, a number of the metal drainage rods are evenly inserted into the detection flow tube and the detection pressure dividing disk, a number of the adsorption magnets are evenly installed on the convex arc rotating block, a number of the arc adsorption magnets are respectively installed on a number of the arc expansion blocks, the air pump is installed on the air tube, and a number of the annular set rubber strips are respectively installed on the inner sides of a number of the concave arc grooves;
[0006] It should be noted that in the above, the liquid is drained to the inner side of the detection flow tube, and the liquid is diverted by the detection pressure dividing disc. The working principle of the differential pressure flowmeter is based on the Bernoulli principle and the bottom balance principle. The Bernoulli principle points out that in a pipeline, the faster the flow rate, the lower the pressure, and vice versa. Therefore, the fluid that accelerates the flow in the pipeline will cause the pressure near the pipeline to drop. The bottom balance principle points out that when the fluid in the pipeline passes through a hole, the pressure on the upper and lower sides of the hole must be balanced, otherwise it will cause fluid leakage or backflow; the rotating drive machine is operated to drive the rotating gear on the driving end of the rotating drive machine to rotate, and the rotating gear drives the rotating arc gear bar meshing with the gear to rotate, and the rotating arc gear bar drives the convex arc rotating block on it, so that the convex arc rotating block rotates along the inner side of a pair of concave limit arc blocks, and at the same time, the convex arc rotating block drives the adsorption magnet, and the metal drainage rod is magnetically conducted by the adsorption magnet, and the arc adsorption magnet is magnetically adsorbed by the metal drainage rod, and at the same time, The air pump inflates the air tube, inflates the spider web shunt tube through the air tube, inflates a number of inflatable airbags through the spider web shunt tube, inflates and squeezes a number of convex telescopic expansion blocks through the inflatable airbags, and drives the arc expansion blocks thereon through the convex telescopic expansion blocks, thereby expanding and sealing the detection pressure dividing disc, and at the same time, according to the different rotation angles of the convex arc rotating blocks, the magnetic adsorption effects of different arc expansion blocks can be adjusted, so that the arc expansion blocks can be telescoped and shielded on the inner side of the throttle holes according to different needs, thereby adjusting the number of throttle holes according to different needs.
[0007] Preferably, a current regulator is provided on the rotary drive machine.
[0008] Preferably, a plurality of the adsorption magnets are cross-mounted on the convex arc rotating block.
[0009] Preferably, a plurality of auxiliary rotating balls are provided on the convex arc rotating block.
[0010] Preferably, a temperature sensor is provided on the detection flow tube.
[0011] Preferably, a flow sensor is provided on the detection flow tube.
[0012] The utility model provides a porous plate balanced differential pressure flowmeter. It has the following beneficial effects: the porous plate balanced differential pressure flowmeter adjusts the number of flow throttling holes inside the detection flow tube through the throttling adjustment structure, and at the same time, the inner side of the convex expansion groove is expanded and sealed by the expansion of the inflatable airbag, and the drainage effect of the drainage throttling hole is changed, so as to achieve multiple detection of the drainage effect, thereby ensuring the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic front and cross-sectional view of a porous plate balanced differential pressure flowmeter described in the utility model.
[0014] Figure 2 for Figure 1 A partial enlarged view of “A” in the figure.
[0015] Figure 3 It is a side view partial cross-sectional schematic diagram of a porous plate balanced differential pressure flowmeter described in the utility model.
[0016] In the figure: 1. detection flow tube; 2. detection pressure dividing disc; 3. L-type detection shaft tube; 4. differential pressure transmitter; 5. convex telescopic extension block; 6. arc extension block; 7. spider web shunt tube; 8. inflation tube; 9. inflatable airbag; 10. inflation pump; 11. concave limit arc block; 12. convex arc rotating block; 13. rotating gear; 14. rotating drive motor; 15. rotating arc gear bar; 16. metal drainage rod; 17. arc adsorption magnet; 18. adsorption magnet. DETAILED DESCRIPTION
[0017] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.
[0018] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control. Example
[0019] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-3As shown, the detection pressure dividing disc 2 is installed on the inner side of the detection flow tube 1, a pair of L-shaped detection shaft tubes 3 are respectively inserted on both sides of the detection flow tube 1, the differential pressure transmitter 4 is installed on a pair of L-shaped detection shaft tubes 3, and a throttling adjustment structure is installed on the detection pressure dividing disc 2; the throttling adjustment structure includes: a plurality of convex telescopic extension blocks 5, a plurality of arc extension blocks 6, a spider web shunt tube 7, an inflation tube 8, a plurality of inflatable airbags 9, an inflation pump 10, a pair of concave limit arc blocks 11, a convex arc rotating block 12, a rotating gear 13, a rotating drive machine 14, a rotating arc gear bar 15, a plurality of metal drainage rods 16, a plurality of arc suction Attached magnet 17, several adsorption magnets 18 and several annular set rubber strips; several throttling holes are opened on the detection pressure dividing disc 2, several throttling holes are opened on several convex telescopic grooves and several concave arc grooves, several convex telescopic extension blocks 5 are respectively movably inserted in the inner sides of several convex telescopic grooves, several arc extension blocks 6 are respectively installed on several convex telescopic extension blocks 5, the spider web shunt tube 7 is inserted in the detection pressure dividing disc 2, the inflation tube 8 is inserted in the detection flow tube 1, the detection pressure dividing disc 2 and the spider web shunt tube 7, and several inflatable air bags 9 are respectively installed in several convex extensions The inner side of the shrinkage groove, and several of the inflatable air bags 9 are connected to the spider web shunt tube 7, a pair of the concave limiting arc blocks 11 are relatively parallelly installed on the outer side of the detection flow tube 1, the convex arc rotating block 12 is movably inserted on the inner side of a pair of the concave limiting arc blocks 11, the rotary drive machine 14 is installed on the outer side of the detection flow tube 1, the rotating arc rack is installed on the convex arc rotating block 12, the rotating gear 13 is installed on the driving end of the rotary drive machine 14, and the rotating gear 13 is meshed with the rotating arc gear bar 15, and several of the metal drainage rods 16 are evenly inserted in the detection flow tube 1 and The detection pressure dividing disc 2, several of the adsorption magnets 18 are evenly installed on the convex circular arc rotating block 12, several of the circular arc adsorption magnets 17 are respectively installed on several of the circular arc expansion blocks 6, the air pump 10 is installed on the air filling tube 8, and several of the circular ring set rubber strips are respectively installed on the inner sides of several of the concave circular arc grooves; a current regulator is provided on the rotating drive machine 14; several of the adsorption magnets 18 are cross-mounted on the convex circular arc rotating block 12; several auxiliary rotating balls are provided on the convex circular arc rotating block 12; a temperature sensor is provided on the detection flow tube 1; a flow sensor is provided on the detection flow tube 1.
[0020] According to the attached Figure 1-3It is concluded that the liquid is drained to the inner side of the detection flow tube 1, and the liquid is diverted by the detection pressure dividing disc 2. The working principle of the differential pressure flowmeter is based on the Bernoulli principle and the bottom balance principle. The Bernoulli principle points out that in a pipeline, the faster the flow rate, the lower the pressure, and vice versa. Therefore, the fluid that accelerates the flow in the pipeline will cause the pressure near the pipeline to drop. The bottom balance principle states that when the fluid in the pipeline passes through a hole, the pressure on the upper and lower sides of the hole must be balanced, otherwise it will cause fluid leakage or backflow; the rotating drive machine 14 is operated to drive the rotating gear 13 on the driving end of the rotating drive machine 14 to rotate, and the rotating gear 13 drives the rotating arc gear bar 15 meshing with the gear to rotate, and the rotating arc gear bar 15 drives the convex arc rotating block 12 thereon, so that the convex arc rotating block 12 rotates along the inner side of a pair of concave limiting arc blocks 11, and at the same time, the convex arc rotating block 12 drives the adsorption magnet 18, and the metal drainage rod 16 is magnetically conducted by the adsorption magnet 18, and the arc adsorption magnet 17 is magnetically conducted by the metal drainage rod 16. Adsorption, and at the same time, the inflation tube 8 is inflated through the inflation pump 10, the spider web shunt tube 7 is inflated through the inflation tube 8, and several inflatable airbags 9 are inflated and expanded through the spider web shunt tube 7, and several convex telescopic expansion blocks 5 are expanded and squeezed through the inflatable airbags 9, and the convex telescopic expansion block 5 drives the arc expansion block 6 thereon, so as to expand and seal the detection pressure dividing disc 2, and at the same time, according to the different rotation angles of the convex arc rotating block 12, the magnetic adsorption effect of different arc expansion blocks 6 can be adjusted, so as to achieve the expansion and shielding of the arc expansion block 6 on the inner side of the throttle hole according to different needs, so as to adjust the number of throttle holes according to different needs.
[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A porous plate balanced differential pressure flowmeter, comprising: A detection flow tube, a detection pressure dividing disc, a pair of L-shaped detection shaft tubes and a differential pressure transmitter, characterized in that the detection pressure dividing disc is installed on the inner side of the detection flow tube, the pair of L-shaped detection shaft tubes are respectively inserted on both sides of the detection flow tube, the differential pressure transmitter is installed on the pair of L-shaped detection shaft tubes, and a throttling adjustment structure is installed on the detection pressure dividing disc; The throttling adjustment structure comprises: a plurality of convex telescopic extension blocks, a plurality of arc extension blocks, a spider web shunt pipe, an inflatable pipe, a plurality of inflatable air bags, an inflatable pump, a pair of concave limit arc blocks, a convex arc rotating block, a rotating gear, a rotating driving machine, a rotating arc gear bar, a plurality of metal drainage rods, a plurality of arc adsorption magnets, a plurality of adsorption magnets and a plurality of annular set rubber strips; The detection pressure dividing disc is provided with a plurality of throttling holes, and a plurality of the throttling holes are provided with a plurality of convex telescopic grooves and a plurality of concave arc grooves. A plurality of the convex telescopic extension blocks are respectively movably inserted into the inner sides of a plurality of the convex telescopic grooves, and a plurality of the arc extension blocks are respectively installed on a plurality of the convex telescopic extension blocks. The spider web shunt tube is inserted into the detection pressure dividing disc, and the inflation tube is inserted into the detection flow tube, the detection pressure dividing disc and the spider web shunt tube. A plurality of the inflatable airbags are respectively installed on the inner sides of a plurality of the convex telescopic grooves, and a plurality of the inflatable airbags are connected to the spider web shunt tube. A pair of the concave limiting arc blocks are relatively and parallelly installed on the outer sides of the detection flow tube. The convex arc rotating block is movably inserted into the inner side of a pair of concave limiting arc blocks, the rotating driving motor is installed on the outer side of the detection flow tube, the rotating arc rack is installed on the convex arc rotating block, the rotating gear is installed on the driving end of the rotating driving motor, and the rotating gear is meshed with the rotating arc gear bar, a number of the metal drainage rods are evenly inserted into the detection flow tube and the detection pressure dividing disk, a number of the adsorption magnets are evenly installed on the convex arc rotating block, a number of the arc adsorption magnets are respectively installed on a number of the arc expansion blocks, the air pump is installed on the air tube, and a number of the ring set rubber strips are respectively installed on the inner sides of a number of the concave arc grooves.
2. A porous plate balanced differential pressure flowmeter according to claim 1, characterized in that: The rotary drive machine is provided with a current regulator.
3. A porous plate balanced differential pressure flowmeter according to claim 2, characterized in that: A plurality of the adsorption magnets are cross-mounted on the convex arc rotating block.
4. A porous plate balanced differential pressure flowmeter according to claim 3, characterized in that: A plurality of auxiliary rotating balls are arranged on the convex arc rotating block.
5. A porous plate balanced differential pressure flowmeter according to claim 4, characterized in that: The detection flow tube is provided with a temperature sensor.
6. A porous plate balanced differential pressure flowmeter according to claim 5, characterized in that: The detection flow tube is provided with a flow sensor.