Miniature energy-saving two-stage pressure reducer

Abstract

The utility model discloses a kind of miniature energy-saving two-stage pressure reducer, belong to pressure reducer technical field.It includes: first pressure reducer, it includes first gas inlet end, first high-pressure chamber, first regulating chamber, first low-pressure chamber, first gas outlet end in turn intercommunication, first high-pressure chamber is equipped with first pressure reduction passage between first regulating chamber, first regulating chamber is equipped with first output passage between first low-pressure chamber;Second pressure reducer, it includes second gas inlet end, second high-pressure chamber, second regulating chamber, second low-pressure chamber, second gas outlet end in turn intercommunication, second high-pressure chamber is equipped with second pressure reduction passage between second regulating chamber, second regulating chamber is equipped with second output passage between second low-pressure chamber;Connector, its both ends are connected with first gas outlet end, second gas inlet end respectively.By two-stage series connection pressure reduction structure, total pressure drop is effectively shared, single-stage pressure reduction ratio is significantly reduced, outlet pressure stability and anti-inlet pressure fluctuation ability are greatly improved, satisfy high-precision gas supply demand.

Description

Technical Field

[0001] This utility model belongs to the field of pressure reducer technology, specifically relating to a miniature energy-saving two-stage pressure reducer. Background Technology

[0002] As a key control component in gas supply systems, pressure reducers are widely used in industrial welding, medical and other fields. Their main function is to stably reduce the pressure of high-pressure gas sources to the low-pressure working pressure required by the equipment and maintain the output pressure at a basically constant level to ensure gas safety and normal equipment operation.

[0003] Currently, most commonly used pressure reducers are single-stage pressure reducers, which only reduce the pressure of the input high-pressure gas once. However, for some welding jobs that have high requirements for aesthetic welding effect and energy saving, the current single-stage pressure reducers can no longer meet the requirements and have the problem of unstable flow.

[0004] In addition, with technological upgrades, gas cylinders on the market can hold more and more gas pressure, but pressure regulators have not been adapted and upgraded accordingly. Therefore, when the output pressure is too high, the internal pressure regulator may become too large and rupture, causing safety hazards. Utility Model Content

[0005] This invention addresses the aforementioned problems in the existing technology by proposing a miniature energy-saving two-stage pressure reducer.

[0006] This utility model can be achieved through the following technical solutions:

[0007] A miniature energy-saving two-stage pressure reducer, comprising:

[0008] The first pressure reducer includes a first air inlet, a first high-pressure chamber, a first regulating chamber, a first low-pressure chamber, and a first air outlet connected in sequence. A first pressure reducing channel is provided between the first high-pressure chamber and the first regulating chamber, and a first output channel is provided between the first regulating chamber and the first low-pressure chamber.

[0009] The second pressure reducer includes a second air inlet, a second high-pressure chamber, a second regulating chamber, a second low-pressure chamber, and a second air outlet connected in sequence. A second pressure reducing channel is provided between the second high-pressure chamber and the second regulating chamber, and a second output channel is provided between the second regulating chamber and the second low-pressure chamber.

[0010] In the first pressure reducer, the first air inlet, the first high-pressure chamber, the first pressure reducing channel, and the first adjustment chamber are arranged in a collinear manner.

[0011] In the second pressure reducer, the second air inlet and the second air outlet are arranged in the same line;

[0012] The connector 300 has its two ends connected to the first air outlet and the second air inlet, respectively.

[0013] As a further improvement of this utility model, both the first high-pressure chamber and the second high-pressure chamber are provided with a valve assembly and a valve spring. The valve assembly is used to open or close the first decompression channel and the second decompression channel, and the valve spring always provides the valve assembly with an elastic force toward the first decompression channel and the second decompression channel.

[0014] As a further improvement of this utility model, both the first pressure reducer and the second pressure reducer are provided with pressure regulating components. The pressure regulating components are connected to the first pressure reducer to form the first regulating cavity, and the pressure regulating components are connected to the second pressure reducer to form the second regulating cavity. The pressure regulating components of the first pressure reducer and the second pressure reducer are arranged in parallel and adjacent to each other.

[0015] As a further improvement of this utility model, the pressure regulating assembly includes an adjusting handwheel, an adjusting spring, and a spring top cover. The two adjusting handwheels are respectively connected to the first pressure reducer and the second pressure reducer, and the two ends of the adjusting spring are respectively connected to the adjusting handwheel and the spring top cover.

[0016] As a further improvement of this utility model, both the first pressure relief channel and the second pressure relief channel are provided with a top rod, and the two ends of the top rod are respectively connected to the spring top cover and the valve assembly for transmission.

[0017] As a further improvement of this utility model, gaps for airflow are reserved between the first pressure-reducing channel, the second pressure-reducing channel and the top rod.

[0018] As a further improvement of this utility model, the side of the first pressure reducer is provided with a high-pressure detection channel, one end of which is connected to the first high-pressure chamber, and the other end is used to install a high-pressure meter.

[0019] As a further improvement of this utility model, the first pressure reducer and the second pressure reducer are respectively provided with a first low pressure gauge and a second low pressure gauge, and the first low pressure gauge and the second low pressure gauge are respectively connected to the first low pressure chamber and the second low pressure chamber.

[0020] As a further improvement of this utility model, in the first pressure reducer, a filter is provided in the channel of the first air inlet end, and the valve spring presses the filter against the stepped surface of the channel of the first air inlet end.

[0021] As a further improvement of this utility model, in the second pressure reducer, a pressure cap is installed at the outlet end of the second high-pressure chamber, the pressure cap is sealed to the inner wall of the second high-pressure chamber, and the valve spring is located in the mounting groove opened in the pressure cap.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Excellent pressure reduction performance and highly stable output pressure: Through a two-stage series pressure reduction structure, the total pressure drop is effectively shared, the single-stage pressure reduction ratio is significantly reduced, and the stability of the outlet pressure and the ability to resist inlet pressure fluctuations are greatly improved, meeting the high-precision gas supply requirements.

[0024] 2. Compact structure, reasonable layout, easy integration and operation: The key flow channels of the first pressure reducer are set in the same line, and the inlet and outlet of the second pressure reducer are set in the same line and arranged side by side in the same direction. The overall shape is neat and the size is small. The two-stage pressure adjustment components are parallel and adjacent, and the handwheel is exposed, which supports independent and intuitive adjustment. With independent high and low pressure gauges for monitoring, it takes into account miniaturization, human-machine interaction and maintenance convenience, and is particularly suitable for portable or embedded applications with limited space.

[0025] 3. Functional flow channel separation design improves measurement accuracy and system stability: By independently leading out the high-pressure detection channel and preventing it from intersecting with the main airflow path, the airflow interference, eddies, and pressure feedback distortion problems caused by the shared channel for pressure input and output in traditional structures are avoided, ensuring that the high-pressure gauge reading accurately reflects the gas source pressure. At the same time, the airflow in the two pressure reducers is forced to pass through the corresponding pressure reducing channel, regulating chamber, and output channel in sequence. The buffer volume of the regulating chamber is used to form a controlled intermediate pressure stabilization zone, which effectively suppresses transient pressure fluctuations without the need for additional pressure stabilization components, significantly enhancing flow stability and pressure control consistency. Attached Figure Description

[0026] Figure 1 This is a cross-sectional view of the miniature energy-saving two-stage pressure reducer of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the miniature energy-saving pressure reducer of this utility model.

[0028] In the diagram, 100 is the first pressure reducer; 110 is the first air inlet; 111 is the filter; 120 is the first high-pressure chamber; 130 is the first regulating chamber; 140 is the first low-pressure chamber; 141 is the first low-pressure gauge; 150 is the first air outlet; 160 is the first pressure reducing channel; 170 is the first output channel; 180 is the high-pressure detection channel; and 181 is the high-pressure gauge.

[0029] 200, Second pressure reducer; 210, Second air inlet; 220, Second high-pressure chamber; 221, Pressure cap; 230, Second regulating chamber; 240, Second low-pressure chamber; 241, Second low-pressure gauge; 250, Second air outlet; 260, Second pressure reducing channel; 270, Second output channel;

[0030] 300. Connector;

[0031] 400. Valve assembly; 410. Valve spring;

[0032] 500. Pressure regulating assembly; 510. Adjusting handwheel; 520. Adjusting spring; 530. Spring top cover;

[0033] 600, top rod. Detailed Implementation

[0034] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0035] like Figures 1-2 As shown, this utility model provides a miniature energy-saving two-stage pressure reducer, comprising:

[0036] The first pressure reducer 100 includes a first air inlet 110, a first high-pressure chamber 120, a first regulating chamber 130, a first low-pressure chamber 140, and a first air outlet 150 connected in sequence. A first pressure reducing channel 160 is provided between the first high-pressure chamber 120 and the first regulating chamber 130, and a first output channel 170 is provided between the first regulating chamber 130 and the first low-pressure chamber 140.

[0037] The second pressure reducer 200 includes a second air inlet 210, a second high-pressure chamber 220, a second regulating chamber 230, a second low-pressure chamber 240, and a second air outlet 250 connected in sequence. A second pressure reducing channel 260 is provided between the second high-pressure chamber 220 and the second regulating chamber 230, and a second output channel 270 is provided between the second regulating chamber 230 and the second low-pressure chamber 240.

[0038] In the first pressure reducer 100, the first air inlet 110, the first high-pressure chamber 120, the first pressure reducing channel 160, and the first regulating chamber 130 are arranged in a collinear manner;

[0039] In the second pressure reducer 200, the second air inlet 210 and the second air outlet 250 are arranged in the same line;

[0040] The connector 300 is connected at both ends to the first air outlet 150 and the second air inlet 210, respectively.

[0041] This two-stage pressure reducer uses a two-stage series pressure reduction principle:

[0042] The high-pressure gas is first reduced in pressure by the first pressure reducer 100, which stabilizes the inlet high pressure to an intermediate pressure.

[0043] Subsequently, the intermediate pressure gas enters the second pressure reducer 200 through connector 300 for a second fine pressure reduction, ultimately outputting stable and precise low-pressure gas.

[0044] The two-stage pressure reduction shares the total pressure drop, effectively reducing the single-stage pressure reduction ratio and significantly improving the stability and anti-interference capability of the outlet pressure. It is especially suitable for occasions with large input pressure fluctuations or high output accuracy requirements.

[0045] Compared to a single-stage pressure reducer, this two-stage pressure reducer has at least the following advantages:

[0046] 1. Superior pressure reduction performance and more stable output: Through a two-stage series pressure reduction structure, the total pressure drop is effectively shared, the single-stage pressure reduction ratio is significantly reduced, and the stability of the outlet pressure and the ability to resist inlet pressure fluctuations are greatly improved, meeting the high-precision gas supply requirements.

[0047] 2. Compact structure, reasonable layout, and easy integration: The first pressure reducer 100 has a collinear design of key flow channels to reduce flow resistance. The second pressure reducer 200 has collinear inlet and outlet ends and the two pressure reducers are arranged side by side in the same direction. The overall shape is neat and the size is small, which is conducive to miniaturization and installation and integration in space-constrained scenarios.

[0048] Preferably, both the first high-pressure chamber 120 and the second high-pressure chamber 220 are provided with a valve assembly 400 and a valve spring 410. The valve assembly 400 is used to open or close the first pressure relief channel 160 and the second pressure relief channel 260, and the valve spring 410 always provides the valve assembly 400 with an elastic force toward the first pressure relief channel 160 and the second pressure relief channel 260.

[0049] This structure allows the valve assembly 400 to remain normally closed when no external force is applied, effectively preventing uncontrolled gas flow and improving safety. At the same time, the valve assembly 400 responds sensitively to pressure regulation signals and, in conjunction with spring force, achieves dynamic balance control of the opening of the pressure reduction channel, thereby ensuring the stability and reliability of the two-stage pressure reduction process.

[0050] The above design not only enhances the sealing and safety performance of the device, but also improves the response speed and accuracy of pressure regulation, which is conducive to achieving energy-saving, stable and reliable pressure reduction output.

[0051] Preferably, both the first pressure reducer 100 and the second pressure reducer 200 are provided with pressure regulating components 500. After the pressure regulating components 500 are connected to the first pressure reducer 100, a first regulating cavity 130 is formed. After the pressure regulating components 500 are connected to the second pressure reducer 200, a second regulating cavity 230 is formed. The pressure regulating components 500 of the first pressure reducer 100 and the second pressure reducer 200 are arranged in parallel and adjacent to each other.

[0052] This layout allows for a high degree of spatial integration of the two-stage pressure reduction regulating component 500, which not only saves overall volume and facilitates miniaturization design, but also allows for intuitive and independent adjustment of the two-stage output pressure during operation, improving the convenience of adjustment and human-machine interaction.

[0053] The pressure regulating assembly 500 includes an adjusting handwheel 510, an adjusting spring 520, and a spring top cover 530. The two adjusting handwheels 510 are respectively connected to the first pressure reducer 100 and the second pressure reducer 200, and the two ends of the adjusting spring 520 are respectively connected to the adjusting handwheel 510 and the spring top cover 530.

[0054] This structure adjusts the compression of the adjusting spring 520 by rotating the adjusting handwheel 510, thereby adjusting the preload acting on the spring top cover 530 and achieving precise setting of the output pressure at each stage. Since the two-stage adjusting components are independently configured and the operating parts are exposed, the user can adjust the pressure reduction parameters of each stage separately and intuitively, improving the flexibility of use and control accuracy. At the same time, the overall mechanical structure is simple and reliable, and easy to assemble and maintain.

[0055] Preferably, a push rod 600 is provided in both the first pressure relief channel 160 and the second pressure relief channel 260. The two ends of the push rod 600 are respectively connected to the spring top cover 530 and the valve assembly 400. A gap is reserved between the first pressure relief channel 160, the second pressure relief channel 260 and the push rod 600 for airflow to pass through.

[0056] This design reliably transmits the regulating force generated by the pressure regulating component 500 to the valve component 400 through the push rod 600, achieving precise control of the pressure reducing channel opening. At the same time, an airflow gap is maintained between the push rod 600 and the channel wall, which not only ensures smooth gas flow and avoids throttling and blockage, but also prevents the movement of the push rod 600 from being hindered by airflow, improving response sensitivity and pressure stabilization performance, while taking into account both structural compactness and fluid dynamic efficiency.

[0057] Preferably, the side of the first pressure reducer 100 is provided with a high-pressure detection channel 180. One end of the high-pressure detection channel 180 is connected to the first high-pressure chamber 120, and the other end is used to install a high-pressure gauge 181. That is, the high-pressure detection channel 180 independently leads out the original pressure in the first high-pressure chamber 120 and is only used to drive the high-pressure gauge 181 to display the remaining pressure of the gas cylinder, and does not participate in the main airflow path.

[0058] It should be noted that in traditional pressure reducers, the channel used to install the push rod 600 is often used as both the pressure channel for the high-pressure gauge 181 and the output airflow bypass. This causes the high-pressure gas to be directly split from the same channel to the high-pressure gauge 181 and the output end after entering the main chamber, resulting in cross-flow paths and mutual interference. This structure is prone to causing local eddies, pressure feedback distortion, and transient flow shocks. Especially when the gas load changes, the output pressure is prone to fluctuations or oscillations.

[0059] In contrast, this application sets the high-pressure detection channel 180 completely independently, so that it is only connected to the first high-pressure chamber 120 and does not intersect with the first regulating chamber 130, the first low-pressure chamber 140 or the first output channel 170. This fundamentally avoids the disturbance of the output airflow to the reading of the high-pressure gauge 181, so that the high-pressure gauge 181 truly reflects the gas source pressure and accurately monitors the output pressure of the gas cylinder.

[0060] In addition, all output gas must flow sequentially through the first pressure reducing channel 160 → the first regulating chamber 130 → the first output channel 170 (the same applies to the second pressure reducing device 200). The first regulating chamber 130 has a certain volume buffering effect. This design forces the airflow to pass through a controlled intermediate pressure stabilization area before entering the output end, effectively suppressing instantaneous pressure changes caused by valve opening fine-tuning or external gas fluctuations, and significantly improving the dynamic stability and regulation accuracy of the system.

[0061] In other words, in the dual-stage pressure reducer provided in this embodiment, in addition to improving the pressure reduction effect through two pressure reductions, the individual first pressure reducer 100 and second pressure reducer 200 also achieve better flow stability and pressure control consistency than the prior art through the structural innovation of functional flow channel separation, without adding additional pressure stabilizing components.

[0062] Preferably, the first pressure reducer 100 and the second pressure reducer 200 are respectively equipped with a first low pressure gauge 141 and a second low pressure gauge 241. The first low pressure gauge 141 and the second low pressure gauge 241 are respectively connected to the first low pressure chamber 140 and the second low pressure chamber 240. This design can monitor the output pressure after the two-stage pressure reduction in real time, which is convenient for accurately grasping the working status of each stage, timely detecting pressure abnormalities or adjustment deviations, and improving the reliability and safety of system operation.

[0063] Meanwhile, the dual-gauge configuration supports independent observation of intermediate pressure and final output pressure, which is beneficial for debugging, maintenance and optimization of gas supply parameters, and enhances the controllability of the equipment and the convenience of user operation.

[0064] Preferably, in the first pressure reducer 100, a filter 111 is provided in the channel of the first air inlet 110. The valve spring 410 presses the filter 111 against the stepped surface of the channel of the first air inlet 110. The filter 111 can effectively intercept particulate impurities in the gas and prevent them from entering the pressure reducing channel and valve assembly 400, avoiding blockage or wear, thereby improving the operational reliability of the pressure reducer, extending its service life, and ensuring the stability of the output pressure.

[0065] Preferably, in the second pressure reducer 200, a pressure cap 221 is installed at the outlet end of the second high pressure chamber 220. The pressure cap 221 is sealed to the inner wall of the second high pressure chamber 220 to prevent gas leakage. The valve spring 410 is located in the mounting groove opened in the pressure cap 221 to ensure that the valve spring 410 is stably installed and maintains the correct preload direction.

[0066] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

[0067] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0068] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0069] The technical solutions of the various embodiments of this utility model can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0070] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A miniature energy-saving two-stage pressure reducer, characterized in that, include: The first pressure reducer includes a first air inlet, a first high-pressure chamber, a first regulating chamber, a first low-pressure chamber, and a first air outlet connected in sequence. A first pressure reducing channel is provided between the first high-pressure chamber and the first regulating chamber, and a first output channel is provided between the first regulating chamber and the first low-pressure chamber. The second pressure reducer includes a second air inlet, a second high-pressure chamber, a second regulating chamber, a second low-pressure chamber, and a second air outlet connected in sequence. A second pressure reducing channel is provided between the second high-pressure chamber and the second regulating chamber, and a second output channel is provided between the second regulating chamber and the second low-pressure chamber. In the first pressure reducer, the first air inlet, the first high-pressure chamber, the first pressure reducing channel, and the first adjustment chamber are arranged in a collinear manner. In the second pressure reducer, the second air inlet and the second air outlet are arranged in the same line; The connector has its two ends connected to the first air outlet and the second air inlet, respectively.

2. The miniature energy-saving two-stage pressure reducer according to claim 1, characterized in that, Both the first high-pressure chamber and the second high-pressure chamber are equipped with a valve assembly and a valve spring. The valve assembly is used to open or close the first decompression channel and the second decompression channel, and the valve spring always provides the valve assembly with an elastic force toward the first decompression channel and the second decompression channel.

3. A miniature energy-saving two-stage pressure reducer according to claim 2, characterized in that, Both the first pressure reducer and the second pressure reducer are provided with pressure regulating components. The pressure regulating components are connected to the first pressure reducer to form the first regulating cavity, and the pressure regulating components are connected to the second pressure reducer to form the second regulating cavity. The pressure regulating components of the first pressure reducer and the second pressure reducer are arranged in parallel and adjacent to each other.

4. A miniature energy-saving two-stage pressure reducer according to claim 3, characterized in that, The pressure regulating assembly includes an adjusting handwheel, an adjusting spring, and a spring top cover. The two adjusting handwheels are respectively connected to the first pressure reducer and the second pressure reducer, and the two ends of the adjusting spring are respectively connected to the adjusting handwheel and the spring top cover.

5. A miniature energy-saving two-stage pressure reducer according to claim 4, characterized in that, Both the first and second pressure-reducing channels are equipped with top rods, and the two ends of the top rods are respectively connected to the spring top cover and the valve assembly.

6. A miniature energy-saving two-stage pressure reducer according to claim 5, characterized in that, A gap is reserved between the first pressure reducing channel, the second pressure reducing channel and the top rod to allow airflow to pass through.

7. A miniature energy-saving two-stage pressure reducer according to claim 1, characterized in that, The first pressure reducer has a high-pressure detection channel on its side. One end of the high-pressure detection channel is connected to the first high-pressure chamber, and the other end is used to install a high-pressure meter.

8. A miniature energy-saving two-stage pressure reducer according to claim 1, characterized in that, The first pressure reducer and the second pressure reducer are respectively equipped with a first low pressure gauge and a second low pressure gauge, and the first low pressure gauge and the second low pressure gauge are respectively connected to the first low pressure chamber and the second low pressure chamber.

9. A miniature energy-saving two-stage pressure reducer according to claim 2, characterized in that, In the first pressure reducer, a filter is provided in the channel at the first air inlet end, and the valve spring presses the filter against the stepped surface of the channel at the first air inlet end.

10. A miniature energy-saving two-stage pressure reducer according to claim 2, characterized in that, In the second pressure reducer, a pressure cap is installed at the outlet end of the second high-pressure chamber. The pressure cap is sealed to the inner wall of the second high-pressure chamber, and the valve spring is located in the mounting groove opened in the pressure cap.

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