CN218994441U

CN218994441U - Low-pressure energy-saving flowmeter set

Info

Publication number: CN218994441U
Application number: CN202221416348.5U
Authority: CN
Inventors: 石方海
Original assignee: Xuzhou Yilu Lihua Energy Saving And Environmental Protection Technology Co ltd
Current assignee: Xuzhou Yilu Lihua Energy Saving And Environmental Protection Technology Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2023-05-09
Anticipated expiration: 2032-06-08

Abstract

The utility model discloses a low-pressure energy-saving flowmeter set, which belongs to the technical field of gas flowmeters and comprises an existing flowmeter structure and a gas storage pressure-reducing buffer valve structure, wherein the inner diameter of a flow scale tube is enlarged; and one side of the outer diameter of the flow scale tube is provided with a flow scale tube scale which moves downwards integrally, and when the air inlet pressure is set to be 0.2MPa, the middle height of the flowmeter floater at the position of the flow scale tube scale is kept consistent. The low-pressure energy-saving flowmeter set improves the gas saving rate by about 20 percent, and meets the pressure requirement of most welding gas by changing the setting of the inlet pressure and the positions of graduation light graduation marks; the problem that the air inlet pressure setting of the existing energy-saving flowmeter is inconsistent with most of welding gas sites is solved well; the method provides a better basis for the welding process department to formulate the flow specification of the shielding gas, meets the national double-carbon requirement, and has wide application range in the air pressure environment.

Description

Low-pressure energy-saving flowmeter set

Technical Field

The utility model relates to the technical field of gas flow meters, in particular to a low-pressure energy-saving flow meter set.

Background

The product is an upgrade and perfection of publication No. 202022921143.X, publication No. 202022921143.X discloses an energy-saving gas decompression flow meter set, as shown in figure 1, the technical product is provided with a gas inlet filtering chamber, and the structure is an up-down structure; the gas enters the upper flowmeter through the bowl-shaped filter screen, and after being regulated to the corresponding gas flow rate by the lower pressure regulating chamber, the gas enters the lower high pressure chamber 201 through the channel between the flowmeter graduated tube 104 and the outer tube 103; enters a low-pressure chamber 202, is output from a pagoda head 203 to an air valve of an air protection welding machine and is output through a welding gun, so that an air protection welding seam is isolated; the design air inlet pressure is 0.35MPa, but in the actual use process, the air bag pressure of the terminal of most air pipelines is between 0.35 and 0.55, and the height of a floater is inconsistent with the actual flow in the actual use of the original technical product originally set to be the air inlet pressure of 0.35 MPa; for example, when the pressure is 0.20MPa, the gas flow is regulated to 20L/min, but the actual flow is 25.8L/min, so that waste is formed, and the process department is confused in preparing the welding gas protection flow standard.

The air inlet pressure of the existing publication No. 202022921143.X is set to be 0.35MPa, which is inconsistent with most welding air sites, and the air inlet pressure is inconvenient to change.

Therefore, the air inlet pressure of the technical product is set to meet the pressure requirements of most welding gases, the pressure requirements of most welding gases are met, the gas is further saved, a more accurate welding shielding gas flow standard basis is provided for the process department, the current society is better served, and the realization of the double-carbon target is promoted.

Disclosure of Invention

Aiming at the technical defects, the utility model aims to provide a low-pressure energy-saving flowmeter set, which better solves the problem that the air inlet pressure setting of the existing energy-saving flowmeter is inconsistent with most welding gas fields.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a low-pressure energy-saving flowmeter set, which comprises a flowmeter and a gas storage pressure-reducing buffer valve, wherein the flowmeter is provided with an air inlet, a flow scale tube and an outer tube, and an air passage is arranged between the flow scale tube and the outer tube; a high-pressure chamber and a low-pressure chamber are arranged in the gas storage pressure-reducing buffer valve, a connecting elbow is arranged on the gas storage pressure-reducing buffer valve, one end of the connecting elbow is integrally connected with the side surface of the storage pressure-reducing buffer valve, and the other end of the connecting elbow is provided with a pagoda head; a hollow screw column with an internal air hole is integrally arranged at the bottom of the flowmeter, and a screw thread of the hollow screw column is connected to the gas storage pressure-reducing buffer valve in a sealing manner; the flowmeter is provided with an inclined channel which is communicated with the air channel and the air hole, the air hole is communicated with the air channel and the high-pressure chamber, and the air hole is used for an air outlet hole of the flowmeter and an air inlet hole of the gas storage pressure-reducing buffer valve; the flow scale tube is characterized in that the inner diameter of the flow scale tube is enlarged; one side of the outer diameter of the flow scale tube is provided with a flow scale tube scale which moves downwards integrally.

Preferably, the intake port intake pressure is set to 0.2MPa.

Preferably, the flow scale tube scale position is set to be consistent with the middle height of the flowmeter floater when the air inlet pressure is 0.2MPa.

Preferably, the flow scale tube and the outer tube are both in a hollow cylindrical shape, and the top end is in a sealed shape.

The utility model has the beneficial effects that: the low-pressure energy-saving flowmeter set improves the gas saving rate by about 20 percent, and meets the pressure requirement of most welding gas by changing the setting of the inlet pressure and the positions of graduation light graduation marks; the problem that the air inlet pressure setting of the existing energy-saving flowmeter is inconsistent with most of welding gas sites is solved well; the method provides a better basis for the welding process department to formulate the flow specification of the shielding gas, meets the national double-carbon requirement, and has wide application range in the air pressure environment.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a conventional energy-saving gas pressure-reducing flowmeter set;

fig. 2 is a schematic structural diagram of a low-pressure energy-saving flowmeter set according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a flow meter; 2. a gas storage pressure-reducing buffer valve; 3. an outer tube; 4. a flow scale tube; 5. the flow scale tube scales.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment is shown in fig. 2, and the low-pressure energy-saving flowmeter set comprises a flowmeter 1 and a gas storage pressure-reducing buffer valve 2, wherein the flowmeter 1 is provided with an air inlet, a flow scale tube 4 and an outer tube 3 as shown in fig. 1, and an air passage 101 is arranged between the flow scale tube 4 and the outer tube 3; a high-pressure chamber 201 and a low-pressure chamber 202 are arranged in the gas storage pressure-reducing buffer valve 2, a connecting elbow 204 is arranged at the outer side of the buffer valve 2, one end of the connecting elbow 204 is integrally connected with the side surface of the storage pressure-reducing buffer valve, and the other end of the connecting elbow is provided with a pagoda head 203 for connecting an air connecting pipe; a hollow screw column 205 with an air hole 206 is integrally arranged at the bottom of the flowmeter, and the hollow screw column 205 is in threaded sealing connection with the gas storage pressure reducing buffer valve 2; the flowmeter 1 is provided with an inclined channel 102 which is communicated with the air passage 101 and an air hole 206, the air hole 203 is communicated with the air passage 101 and the high-pressure chamber 201, and the air hole 203 is used for an air outlet hole of the flowmeter 1 and an air inlet hole of the gas storage decompression buffer valve 2; as shown in fig. 2, the inner diameter of the flow scale tube 4 is enlarged; one side of the outer diameter of the flow scale tube 4 is provided with a flow scale tube scale 5 which moves downwards integrally.

Further, as shown in fig. 1, the structure of the flowmeter 1 is an existing design, and comprises an air inlet pipe, a connecting nut, a sealing ring, a filtering chamber, a filter screen, an outer pipe of the flowmeter, a scale tube of the flowmeter, a filter screen under the scale tube, a flow tube seat and an air passage, wherein the sealing ring is arranged on the air inlet pipe, the filter screen is arranged in the filtering chamber, and the flowmeter is connected with the air collecting bag in a sealing way through the connecting nut; the filter chamber and the bowl-shaped filter screen are arranged at the air inlet, impurities in the air pipeline can be effectively filtered, scales of the scale tube of the flowmeter are kept clearly visible, so that operators can accurately adjust the air flow, the air waste is reduced, and the quality of welding seams is improved.

Further, the structure of the gas storage pressure-reducing buffer valve 2 shown in fig. 1 is designed in the prior art, and includes: the device comprises a shell, a diaphragm, a high-pressure chamber, a low-pressure chamber, a valve plug, a valve hole, a push rod, a pressure regulating spring, a pressure regulating screw and a pressure regulating chamber; the diaphragm divides the shell into a valve chamber at the upper part and a pressure regulating chamber at the lower part, the valve chamber consists of a lower high-pressure chamber, a low-pressure chamber and a valve between the high-pressure chamber and the low-pressure chamber, a valve plug of the valve is arranged in the high-pressure chamber, a high-pressure spring is propped against a valve hole of the valve, the valve plug is provided with a push rod penetrating through the valve hole, and the push rod is connected with the diaphragm; the pressure regulating spring is arranged at the lower part of the diaphragm, and the pressure of the pressure regulating spring to the diaphragm is regulated by the pressure regulating screw.

Further, in the embodiment, the air inlet pressure of the air inlet is set to be 0.2MPa, so that the effect of changing the air inlet pressure to meet the pressure requirement of most welding gases is achieved, and meanwhile, the gas can be saved.

Furthermore, the scale 5 of the flow scale tube is arranged at the middle height of the flowmeter floater when the air inlet pressure is 0.2MPa, so that the purposes that the height of the flowmeter floater is the same as the scale of the scale tube in most gas pressure environments can be achieved, and a better basis is provided for the welding process department to formulate the standard of the flow of the shielding gas.

Further, the flow scale tube 4 and the outer tube 3 are both hollow cylindrical, and the top end is sealed.

When the scale mark position of the flow scale tube is set, an original Y-303 centralized gas supply energy-saving flowmeter set is installed on a Y-303 detection table of the energy-saving flowmeter set; then the pressure of a pressure reducer on the mixed gas cylinder is regulated to 0.2MPa, and then an American ALICAT gas mass meter is selected as a measuring instrument; then the Y-303 pressure regulating chamber adjusting knob is rotated, when the actual flow is observed to be 20L/min, the central line of the flowmeter floater is aligned with the position of a scale mark on the flow scale tube, and the position is measured and marked by using a caliper and light respectively; repeating the experiment for 20 times to obtain an accurate conclusion, and making a scale tube mould by computer drawing to produce a scale tube sample (an original scale tube without scales can be used); and then carrying out 20 groups of tests on the samples to obtain a test conclusion, finally determining the positions of the scale marks of the flow scale tube, and then gradually manufacturing the low-pressure energy-saving flowmeter.

The low-pressure energy-saving flowmeter set improves the gas saving rate by about 20 percent, and meets the pressure requirement of most welding gas by changing the setting of the inlet pressure and the positions of graduation light graduation marks; the problem that the air inlet pressure setting of the existing energy-saving flowmeter is inconsistent with most of welding gas sites is solved well; the method provides a better basis for the welding process department to formulate the flow specification of the shielding gas, meets the national double-carbon requirement, and has wide application range in the air pressure environment.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The low-pressure energy-saving flowmeter set comprises a flowmeter and a gas storage pressure-reducing buffer valve, wherein the flowmeter is provided with an air inlet, a flow scale tube and an outer tube, and an air passage is arranged between the scale tube and the outer tube; a high-pressure chamber and a low-pressure chamber are arranged in the gas storage pressure-reducing buffer valve, a connecting elbow is arranged on the gas storage pressure-reducing buffer valve, one end of the connecting elbow is integrally connected with the side surface of the storage pressure-reducing buffer valve, and the other end of the connecting elbow is provided with a pagoda head; the bottom of the flowmeter is integrally provided with a hollow screw column with an internal air hole, and the hollow screw column is screwed and connected to the gas storage pressure-reducing buffer valve in a sealing way; the flowmeter is provided with an inclined channel which is communicated with the air channel and the air hole, the air hole is communicated with the air channel and the high-pressure chamber, and the air hole is used for an air outlet hole of the flowmeter and an air inlet hole of the gas storage pressure-reducing buffer valve; the method is characterized in that: the inner diameter of the flow scale tube is enlarged; one side of the outer diameter of the flow scale tube is provided with a flow scale tube scale which moves downwards integrally;

the inlet pressure of the air inlet is set to be 0.2MPa; the scale position of the flow scale tube is arranged at the middle height of the flowmeter floater when the air inlet pressure is 0.2MPa, and the middle height of the flowmeter floater is kept consistent.

2. A low pressure, energy efficient flowmeter set as set forth in claim 1, wherein: the scale tube and the outer tube are both arranged in a hollow cylindrical shape, and the top end is sealed.