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Heat meter based on movable Venturi pipe flowmeter

A Venturi tube and flowmeter technology, applied in the field of heat meters based on dynamic Venturi tube flowmeters, can solve the problems of clogging of mechanical flowmeters or differential pressure flowmeters, slow promotion, weak water treatment links, etc. The effect of small flow resistance loss, high measurement accuracy and long service life

Inactive Publication Date: 2013-09-04
王可崇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to various reasons, the water treatment link of my country's heating system is weak, and the water quality is relatively poor, which can easily cause the mechanical flowmeter or differential pressure flowmeter in the household heat meter used in the household metering heating system to be damaged. Blockage; if the household type heat meter uses an ultrasonic flowmeter, there is still a problem of blockage because the hot water for heating needs to flow through an ultrasonic reflection cavity with a rectangular flow section in the ultrasonic flowmeter, and the ultrasonic flowmeter is expensive, so it is not suitable my country's current national conditions; it can be said that the above-mentioned defects of the flow meters in various household heat meters are one of the main reasons why the household metering heating system has been slow to promote in our country even though it can save energy by at least 20%.

Method used

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  • Heat meter based on movable Venturi pipe flowmeter
  • Heat meter based on movable Venturi pipe flowmeter
  • Heat meter based on movable Venturi pipe flowmeter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] exist figure 2In the embodiment, the flow meter in the heat meter uses two U-shaped bellows 8, the front end of the front bellows 8 is in sealing connection with the front end pipe 3, and its rear end is in sealing connection with the inlet of the Venturi tube 4; The front end of the bellows 8 is in sealing connection with the outlet of the Venturi tube 4, and its rear end is in sealing connection with the rear end pipe 3. Fill the flexible filter medium 1 in each single-wave space in the front and rear bellows 8, which is larger than the caliber of the bellows 8, and the measured liquid can reach, forming a ring in each single-wave space Shaped filter layer. Each single-wave filter layer follows the front and rear expansion and contraction of the bellows 8 to perform corresponding axial expansion and contraction to ensure that hot water can only enter and exit the above-mentioned single-wave gaps through each single-wave filter layer. Because the front and rear disp...

Embodiment 2

[0048] exist image 3 In the embodiment, it can be seen that the structure of this embodiment is roughly the same as figure 2 The first embodiment is the same, except that the flexible filter medium 1 is not filled in the gaps that can be reached by the measured liquid in each single wave in the front and rear bellows 8, which is larger than the inner diameter of the bellows 8, but uses Two cylindrical filter membranes 2 with the same caliber as the inner diameter of the bellows 8 are provided, and each filter membrane 2 closes the gaps accessible to hot water larger than the caliber of the bellows 8 in all single waves in the bellows 8, and filters Diaphragm 2 can follow the axial expansion and contraction of bellows 8 to do the same axial expansion and contraction, so that hot water can enter and exit the above-mentioned single wave gaps of bellows 8 only through this filter membrane 2 . The cylindrical filter membrane 2 can be made of ordinary fiber fabric, or an inorgani...

Embodiment 3

[0050] exist Figure 4 In the embodiment, the two ends of the moving Venturi tube 4 are each fitted with a ring-shaped corrugated elastic diaphragm 7 with corrugated edges, and the inner edges of the front elastic diaphragm 7 and the rear elastic diaphragm 7 are respectively connected to the venturi. The inlet and outlet of the inner pipe 4 are sealed and connected, and the outer edges of the front elastic diaphragm 7 and the rear elastic diaphragm 7 are sealed and connected with the front end pipe 3 and the rear end pipe 3 respectively. The casing 5 is rigidly connected with the front end pipe 3 and the rear end pipe 3, so the distance between the two end pipes 3 can be fixed, and other components can be installed thereon. The gap between the elastic diaphragm 7 and the end pipe 3 is filled with a flexible filter medium 1 to form two ring-shaped filter layers. The filter layer can follow the movement of the Venturi tube 4 to perform corresponding axial expansion and contracti...

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Abstract

The invention discloses a heat meter based on a movable Venturi pipe flowmeter, which belongs to the technical field of metering heating systems. Aiming at the current situation of the defects that a heating system is poor in water quality, a heat meter adopts a mechanical mode and a differential pressure mode or an ultrasonic flowmeter is easily blocked and the like in our nation, the heat meter adopts a movable Venturi pipe flowmeter as a core forming part of the heat meter, the flowmeter uses a movable Venturi pipe, two structure modes are available that two ends of the movable Venturi pipe are respectively provided with an elastic membrance, or a corrugated pipe, or only one end of the movable Venturi pipe is provided with an elastic membrance or a corrugated pipe, and movable gaps of the flowmeter are filled with a flexibleness filter medium or provided with filter membrances to form a blocking preventing mechanism of the flowmeter; as the flowmeter has the advantages of being simple in structure, low in price, small in flow resistance loss, long in service life, high in accuracy, hard to block and the like, the heat meter based on the flowmeter can be used for solving the problem that the conventional heat meter is difficult to expand; and the heat meter can meet urge requirements of household heat metering heating systems on together-used household heat meters.

Description

technical field [0001] The invention relates to an instrument for measuring heat supply in the technical field of metering heat supply systems, in particular to a household type heat meter for household metering heat supply systems. Background technique [0002] At present, most central heating systems in northern cities in my country still charge by area. This settlement method is neither scientific nor fair and reasonable. Therefore, it is imperative to implement a settlement method that is based on actual heat consumption. Improve the comfort of heating residential users, and can greatly save energy. As the core component of the metered heating system, heat meters mainly include flow meter-based heat meters and flow meter-free heat meters. Due to the disadvantages of large measurement errors and inconvenient use of heat meters without flow meters, heat meters based on flow meters are still widely used at present. A heat meter based on a flowmeter is usually composed of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K17/16G01F1/44
Inventor 王可崇
Owner 王可崇
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