CN218863319U - Light-weight compact type double-spring high-pressure reducer - Google Patents
Light-weight compact type double-spring high-pressure reducer Download PDFInfo
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- CN218863319U CN218863319U CN202221987435.6U CN202221987435U CN218863319U CN 218863319 U CN218863319 U CN 218863319U CN 202221987435 U CN202221987435 U CN 202221987435U CN 218863319 U CN218863319 U CN 218863319U
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Abstract
The utility model relates to a valve field, concretely relates to two spring high pressure reducers of lightweight compact, including valve body, auxiliary valve body, case subassembly, disk seat, diaphragm subassembly, main spring subassembly, auxiliary spring subassembly, ejector pin and adjusting hole board. The valve seat, the valve core assembly, the auxiliary spring assembly and the adjusting hole plate are installed in the valve body, the diaphragm assembly is installed above the valve body, the main spring assembly is installed above the diaphragm assembly, the ejector rod penetrates through the valve body to connect the diaphragm assembly and the valve core assembly, and the auxiliary valve body is installed on the outer side of the pressure reducer. A plurality of sealing rings are arranged. The double-spring high-pressure reducer is provided with a two-stage pressure reducing structure, the required outlet pressure and hydrogen flow are output after the pressure is reasonably distributed, the structure is simple, parts are precise and small, the functions of pressure reduction, flow control and noise reduction are realized, the double-spring high-pressure reducer has the characteristics of high reliability, miniaturization and light weight, and the requirement of a hydrogen energy device in a limited space is met.
Description
Technical Field
The utility model relates to a valve field, concretely relates to light-weighted compact dual spring high pressure reducer.
Background
With the expansion of the application field of hydrogen energy, hydrogen storage technology has been developed. High-pressure gaseous hydrogen storage is one of the current common hydrogen storage modes, and the whole pressure difference from a gas cylinder to the atmospheric environment is higher, and a corresponding high-pressure reducing device needs to be equipped to realize that hydrogen flows out at a pressure close to normal pressure. However, as the application fields expand, the high pressure reduction device tends to be miniaturized, for example, in a hydrogen energy automobile or a handheld torch, the volume is limited, and the total weight needs to be controlled, so that a light-weight and miniaturized pressure reduction device is required to meet the requirement of a hydrogen energy device in a limited space.
The traditional pressure reducer can be divided into a piston type and a diaphragm type according to an induction element, and the working principle is as follows: the piston or the diaphragm is used as an induction element, and the required outlet pressure is achieved after primary pressure reduction through the balance between the medium force borne by the induction element and the spring force. However, when high-pressure gaseous hydrogen is stored, the inlet pressure of the pressure reducer exceeds 30MPa G, the outlet pressure is about 1kPa G, the pressure reducer has the characteristics of high pressure difference and low flow, and the traditional pressure reducer has the following problems in use:
one is as follows: the high pressure difference working condition can lead to the diameter of an induction element of the primary pressure reduction structure to be larger, and the overall weight and the size of the valve are large.
And the second step is as follows: the working condition of low-flow hydrogen can lead to the fact that the size of a first-level pressure reduction valve port is very small, the machining forming is difficult, and the machining precision is poor.
And thirdly: the direction of the inlet and the outlet of the traditional pressure reducer is mutually vertical to the movement direction of the spring or forms an oblique angle, and the installation space of the valve is large.
Fourthly, the method comprises the following steps: the traditional pressure reducer adopting the piston structure alone has a smaller pressure regulating range and poorer regulating capability, and is basically suitable for fixed working conditions.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: the light-weight compact type double-spring high-pressure reducer is used for reducing the pressure of high-pressure hydrogen to be close to normal pressure, and then providing hydrogen with stable flow for a combustor to realize the functions of reducing pressure, controlling flow and reducing noise.
The utility model provides a technical scheme be: a light-weight compact type double-spring high-pressure reducer comprises a valve body, an auxiliary valve body, a valve core assembly, a valve seat, a diaphragm assembly, a main spring assembly, an auxiliary spring assembly, a mandril and an adjusting pore plate; the valve seat, the valve core assembly and the auxiliary spring assembly are sequentially arranged in an inner cavity of the valve body from top to bottom, the auxiliary valve body is sleeved on the outer side of the upper end of the valve body, the main spring assembly is arranged in the inner cavity of the upper end of the auxiliary valve body, the diaphragm assembly is arranged in the inner cavity of the auxiliary valve body and positioned between the main spring assembly and the upper end of the valve body, the ejector rod penetrates through the valve body, and the two ends of the ejector rod are respectively connected with the diaphragm assembly and the valve core assembly; the valve body is provided with a valve inlet flow passage and a low-pressure cavity gas flow passage, the valve inlet flow passage is communicated with a high-pressure cavity arranged on the valve seat, and the low-pressure cavity lifting flow passage is communicated with a valve outlet arranged on the auxiliary valve body; the adjusting orifice plate is arranged at the upper end of the valve body, and the upper end and the lower end of the adjusting orifice plate are respectively communicated with the low-pressure cavity gas flow passage and the cavity between the diaphragm assembly and the valve body.
Preferably, the valve inlet flow passage and the low-pressure cavity gas flow passage are arranged on two sides of the inner cavity of the valve body.
Preferably, the valve body is of a stepped cylinder structure, and the diameter of the cylinder at the upper end is smaller than that of the cylinder at the lower end; a step round hole is arranged in the large-end cylindrical structure, a small round hole at the upper end of the step round hole is used for mounting a valve seat, and the large round hole is used as an inner cavity for mounting the valve seat, the valve core assembly and the auxiliary spring assembly; a valve inlet flow passage is arranged on one side of the inner cavity; a transverse flow passage is arranged at the junction of the valve body stepped cylinder on the other side of the valve inlet flow passage, is communicated with a through hole formed in the top surface of the inner cavity and forms a gas flow passage of a low-pressure cavity together with a gap between the small-end cylinder of the valve body and the auxiliary valve body; the upper end of the small-end cylinder is provided with a groove which is deformed and displaced by using the diaphragm assembly, and a through hole for installing the adjusting hole plate is formed between the groove and the transverse flow channel.
Preferably, the directions of the valve inlet and the valve outlet are parallel to the moving directions of the main spring assembly and the auxiliary spring assembly.
Preferably, a first-stage pressure reducing structure is arranged on the valve seat, and a high-pressure cavity is arranged at the upper end of the first-stage pressure reducing structure; a second pressure reducing structure is arranged on the auxiliary valve body, and a valve outlet is arranged behind the second pressure reducing structure; and a gas flow passage between the first pressure reducing structure and the second pressure reducing structure is a low-pressure cavity gas flow passage.
Preferably, the first stage pressure reducing structure is a throat hole arranged at the lower end of the valve seat.
Preferably, the second-stage pressure reduction structure is provided with a noise reduction flow channel, and the ratio d3/d2 of the equivalent diameter of the noise reduction flow channel to the second-stage pressure reduction structure is 1.1-2.5, preferably 1.3-1.8; the ratio of the diameter of the outlet of the flow channel to the diameter of the second-stage pressure reduction structure d4/d2 is 1.5 to 3, preferably 2 to 2.8.
Preferably, the throat diameter of the first stage pressure reducing structure is larger than that of the second stage pressure reducing structure, and the hydrogen flow rate is controlled through the throat of the second stage pressure reducing structure.
Preferably, the pressures of the high-pressure chamber and the low-pressure chamber are distributed by the diameter ratio of the first-stage pressure reduction structure and the second-stage structure; the diameter d1 of the throat of the first stage pressure reducing structure and the diameter d2 of the throat of the second stage pressure reducing structure are as follows: the ratio d1/d2 is in the range of 1.2 to 2, preferably 1.4 to 1.8.
Preferably, the valve core assembly consists of a valve core and a sealing filler embedded at the upper end of the valve core, wherein the sealing filler is made of a non-metal material and is arranged in a groove at the upper end of the valve core for protecting the first-stage pressure reduction structure and avoiding mechanical damage.
Preferably, the diaphragm subassembly comprises diaphragm, diaphragm support, diaphragm pressure pad and the spacing pad of diaphragm, and the spacing pad of diaphragm is used for restricting the removal of diaphragm, supports when receiving the effort of the vertical direction of main spring subassembly at the diaphragm, drives the diaphragm and warp, and the diaphragm supports and the vertical removal of diaphragm pressure pad.
Preferably, in the diaphragm assembly, the downward main spring force provided by the main spring assembly, the upward pressure applied to the diaphragm by the low pressure chamber and the upward auxiliary spring force provided by the auxiliary spring assembly form a balance relationship; the main spring force and the pressure of the diaphragm under the action of the low-pressure cavity are main adjusting forces, the main spring force is far greater than the auxiliary spring force, and the ratio of the main spring force to the auxiliary spring force is 20-40.
Preferably, the ratio of the diameter d5 of the cavity between the diaphragm assembly and the valve body to the diameter d6 of the valve element is between 0.8 and 2.2, preferably between 0.95 and 1.7.
Preferably, the upper end of the ejector rod is connected with the membrane support, and the lower end of the ejector rod is connected with the valve core and arranged in pairs; along with the deformation of the diaphragm, the ejector rod moves up and down to limit the position of the valve core assembly 3 and control the flow section of the pressure reducing valve.
Preferably, the auxiliary spring assembly consists of an auxiliary spring, an auxiliary spring cap and an auxiliary spring seat, wherein the auxiliary spring and the auxiliary spring seat are arranged in the auxiliary spring cap, the deformation of the auxiliary spring is restricted by the auxiliary spring cap and the auxiliary spring seat, and the auxiliary spring seat is in contact with the valve core; the spring force and the downward thrust of the ejector rod form balance, and the downstream pressure is kept stable in a certain range.
Preferably, sealing rings are arranged between the auxiliary valve body and the valve body, between the valve seat and the valve body, between the valve core assembly and the valve body, and between the auxiliary spring assembly and the valve body, so that sealing is realized.
Compared with the prior art, the utility model beneficial effect be:
1. the utility model provides a diaphragm high pressure decompression compact structure, the part is accurate, small and exquisite, has realized valve lightweight, miniaturized design.
2. The utility model provides an inlet pressure that double spring high pressure reducer suitable for can reach 70MPa the most, and outlet pressure reaches about 1kPa.
3. The utility model provides a valve body, valve gap are pressure reducer pressure comparison component, and rational distribution high pressure chamber pressure, low pressure chamber pressure, export pressure proportional relation satisfy the application demand of high-pressure differential, low flow hydrogen, effectively reduce the processing degree of difficulty.
4. The utility model provides a direction is imported and exported to the pressure reducer is parallel with the spring direction of motion, saves installation space.
5. The utility model provides a pressure reducer can effectively adjust outlet pressure when entry pressure changes, and the pressure regulating scope is great.
Drawings
FIG. 1 is a schematic view of the structure of the dual-spring high-pressure reducer of the present invention;
in the figure: 1 is a valve body, 2 is an auxiliary valve body, 3 is a valve core assembly, 4 is a valve seat, 5 is a diaphragm assembly, 6 is a main spring assembly, 7 is an auxiliary spring assembly, 8 is an ejector rod, and 9 is an adjusting orifice plate.
Detailed Description
The present invention will be further explained with reference to the following examples.
As shown in figure 1, the utility model discloses dual spring high pressure reducer, including valve body 1, vice valve body 2, case subassembly 3, disk seat 4, diaphragm subassembly 5, main spring assembly 6, vice spring assembly 7, ejector pin 8 and adjusting orifice plate 9. The valve seat 4, the valve core assembly 3 and the auxiliary spring assembly 2 are sequentially installed in the valve body 1 from top to bottom, the adjusting orifice plate 9 is installed on one side of the upper end of the valve body 1, the diaphragm assembly 5 is installed above the valve body 1, the main spring assembly 6 is installed above the diaphragm assembly 5, the ejector rod 8 penetrates through the valve body 1 to connect the diaphragm assembly 5 and the valve core assembly 3, and the auxiliary valve body 2 is installed on the outer sides of the valve body 1, the diaphragm assembly 3 and the main spring assembly 6; the hydrogen flow channel passes through the valve body 1, the valve core assembly 3 and the auxiliary valve body 2. The pressure reducing valve is provided with a plurality of sealing rings to ensure sealing.
The valve core assembly 3 is composed of a valve core 3-1 and a sealing filler 3-2 embedded at the upper end of the valve core, wherein the sealing filler 3-2 is made of a non-metal material and is arranged in a groove at the upper end of the valve core 3-1 to protect a first-stage pressure reduction structure of the valve body and avoid mechanical damage.
The upper end of the valve seat 4 is connected with the valve body 1 through threads, the lower end of the valve seat is provided with a throat 4-1 which is a first-stage pressure reducing structure of the valve, a high-pressure cavity is arranged above the first-stage pressure reducing structure, and the pressure of the high-pressure cavity is consistent with that of the inlet of the valve.
The valve body is provided with an inner cavity which is connected with the auxiliary valve body and the auxiliary spring cap through threads. A hydrogen inlet flow passage is arranged on the left side of the inner cavity, and a hydrogen outlet flow passage is arranged on the right side of the inner cavity.
The upper end of the auxiliary valve body 2 is provided with a hydrogen flow channel outlet, a second-stage pressure reducing structure 2-1 is designed at the position, a low-pressure cavity is arranged between the first-stage pressure reducing structure and the second-stage pressure reducing structure, the pressure of the low-pressure cavity is directly related to the spring force, the sensing area of the diaphragm assembly and the second-stage pressure reducing structure, and the pressure behind the second-stage pressure reducing structure is outlet pressure. The second-stage pressure reduction structure is provided with a noise reduction runner 2-2, the noise reduction runner 2-2 is in a tapered and gradually expanded shape, a plurality of noise reduction runners are arranged above and below the throat hole of the second-stage pressure reduction structure and can be formed through screwing or welding, the equivalent diameter of the noise reduction runners is larger than the size of the throat hole of the second-stage pressure reduction structure, and noise generated by high-speed gas flow is effectively reduced.
The main spring assembly 6 consists of a main spring 6-1, a main spring cap 6-2 and a main spring seat 6-3, the main spring 6-1 is restrained by the main spring cap 6-2 and the main spring seat 6-3 in deformation, and the main spring seat 6-3 is connected with the diaphragm assembly 5. The height of the main spring 6-1 is actively adjusted, the main spring seat 6-3 is pushed to move up and down, and the diaphragm assembly 5 is driven to move up and down. The top of the main spring cap 6-2 is provided with a hole, so that the spring installation space is communicated with the atmosphere, the situation that the pressure in the space is changed due to the movement of the spring to influence the pressure reduction performance is avoided, and meanwhile, the total weight of the valve is effectively reduced.
The diaphragm assembly 5 is composed of a diaphragm 5-1, a diaphragm support 5-2, a diaphragm pressure pad 5-3 and a diaphragm limiting pad 5-4, the diaphragm limiting pad 5-4 limits the movement of the diaphragm 5-1, when the diaphragm support 5-2 receives the acting force of the main spring 6-1 in the vertical direction, the diaphragm 5-1 is driven to deform, and the diaphragm support 5-2 and the diaphragm pressure pad 5-3 vertically move.
The upper end of the ejector rod 8 is connected with the membrane component 5, and the lower end of the ejector rod 8 is connected with the valve core component 3 and arranged in pairs. Along with the deformation of the diaphragm 5-1, the mandril 8 moves up and down to limit the position of the valve core component 3 and control the flow section of the pressure reducing valve.
The auxiliary spring assembly 7 is composed of an auxiliary spring 7-1, an auxiliary spring cap 7-2 and an auxiliary spring seat 7-3, wherein the auxiliary spring 7-1 and the auxiliary spring seat 7-2 are installed in the auxiliary spring cap 7-3, deformation of the auxiliary spring 7-1 is restrained by the auxiliary spring cap 7-2 and the auxiliary spring seat 7-3, and the auxiliary spring seat 7-3 is in contact with the valve core 3-1. The spring force and the downward thrust of the ejector rod 8 form balance, and the downstream pressure is kept stable in a certain range.
The adjusting orifice plate 9 is connected with the diaphragm lower cavity and the hydrogen flow channel, and can feed back to the main spring 6-1 when the pressure of the low-pressure cavity changes, adjust the position of the valve core assembly 3 and keep the pressure of the low-pressure cavity stable.
In the double-spring high-pressure reducer, a two-stage pressure reducing structure is designed, the diameter ratio d1/d2 of the first-stage pressure reducing structure to the second-stage pressure reducing structure is 1.2-2, preferably 1.4-1.8, the high-pressure cavity, the low-pressure cavity and the outlet pressure are reasonably distributed, and the pressure reducer outputs the required outlet pressure and hydrogen flow. The size of the pressure reducing structure d1 and the size of the pressure reducing structure d2 are larger than that of a valve port adopting a one-level pressure reducing structure, the processing difficulty is reduced, and the processing precision is improved.
In the double-spring high-pressure reducer, the second-stage pressure reducing structure is provided with a noise reduction flow passage 2-2, so that noise generated when hydrogen flows at a high speed is effectively reduced. The ratio of the equivalent diameter of the noise reduction flow channel to the diameter d3/d2 of the second-stage decompression structure is 1.1-2.5, preferably 1.3-1.8. d4/d2 is from 1.5 to 3, preferably from 2 to 2.8.
In the double-spring high-pressure reducer, sealing rings are arranged between the auxiliary valve body 2 and the valve body 1, between the valve seat 4 and the valve body 1, between the valve core assembly 3 and the valve body 1, and between the auxiliary spring assembly 7 and the valve body 1, so that sealing is realized.
The direction of the inlet and the outlet of the double-spring high-pressure reducer is parallel to the movement direction of the spring, so that the installation space is saved, the light and miniaturized design of the valve is realized, and the requirement of a limited space hydrogen energy device is met.
The utility model discloses a theory of operation as follows:
when high-pressure hydrogen got into valve high pressure chamber, promoted the diaphragm deformation through manual regulation main spring subassembly, made the ejector pin move down, promoted the valve core and move down, made valve core subassembly and first order decompression structure be in the off-state, hydrogen exports after passing through first order, second level decompression structure in proper order. Because the size of the first-stage pressure reducing structure is larger than that of the second-stage pressure reducing structure, the pressure of the low-pressure cavity is gradually increased along with the entering of high-pressure gas, the diaphragm assembly is subjected to the upward medium force of the low-pressure cavity, when the pressure in the low-pressure cavity is higher, downward spring force is overcome, the valve core assembly moves upwards, and similarly, when the pressure in the low-pressure cavity is lower, the valve core assembly moves downwards until the resultant force tends to a balanced state. At this time, the output pressure of the pressure reducer is reached, and a fixed flow of hydrogen is supplied to the burner.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. The present invention is not limited by the above embodiments, and only the embodiments described in the above embodiments and the description are the principles of the present invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and improvements, and these changes and improvements all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
The non-detailed description of the present invention is within the common general knowledge of those skilled in the art.
Claims (19)
1. The utility model provides a light-weighted compact dual spring high pressure reducer which characterized in that: the valve comprises a valve body, an auxiliary valve body, a valve core assembly, a valve seat, a diaphragm assembly, a main spring assembly, an auxiliary spring assembly, an ejector rod and an adjusting orifice plate; the valve seat, the valve core assembly and the auxiliary spring assembly are sequentially arranged in an inner cavity of the valve body from top to bottom, the auxiliary valve body is sleeved on the outer side of the upper end of the valve body, the main spring assembly is arranged in the inner cavity of the upper end of the auxiliary valve body, the diaphragm assembly is arranged in the inner cavity of the auxiliary valve body and positioned between the main spring assembly and the upper end of the valve body, the ejector rod penetrates through the valve body, and the two ends of the ejector rod are respectively connected with the diaphragm assembly and the valve core assembly; the valve body is provided with a valve inlet flow passage and a low-pressure cavity gas flow passage, the valve inlet flow passage is communicated with a high-pressure cavity arranged on the valve seat, and the low-pressure cavity lifting flow passage is communicated with a valve outlet arranged on the auxiliary valve body; the adjusting orifice plate is arranged at the upper end of the valve body, and the upper end and the lower end of the adjusting orifice plate are respectively communicated with the low-pressure cavity gas flow passage and the cavity between the diaphragm assembly and the valve body.
2. A light-weight compact dual-spring high-pressure reducer according to claim 1, characterized in that: the valve inlet flow passage and the low-pressure cavity gas flow passage are arranged on two sides of the inner cavity of the valve body.
3. A light-weight compact dual-spring high-pressure reducer as recited in claim 1 or 2, characterized in that: the valve body is of a stepped cylinder structure, and the diameter of the upper end cylinder is smaller than that of the lower end cylinder; a step round hole is arranged in the large-end cylindrical structure, a small round hole at the upper end of the step round hole is used for mounting a valve seat, and the large round hole is used as an inner cavity for mounting the valve seat, the valve core assembly and the auxiliary spring assembly; a valve inlet flow passage is arranged on one side of the inner cavity; a transverse flow passage is arranged at the junction of the valve body stepped cylinder at the other side of the valve inlet flow passage, is communicated with a through hole formed in the top surface of the inner cavity, and forms a gas flow passage of a low-pressure cavity together with a gap between the small-end cylinder of the valve body and the auxiliary valve body; the upper end of the small-end cylinder is provided with a groove which is deformed and displaced by using the diaphragm assembly, and a through hole for installing the adjusting hole plate is formed between the groove and the transverse flow channel.
4. A light-weight compact dual-spring high-pressure reducer according to claim 1, characterized in that: the directions of the valve inlet and the valve outlet are parallel to the moving directions of the main spring assembly and the auxiliary spring assembly.
5. A light weight compact dual spring high pressure reducer as recited in claim 1, wherein: a first-stage pressure reducing structure is arranged on the valve seat, and a high-pressure cavity is arranged at the upper end of the first-stage pressure reducing structure; a secondary pressure reducing structure is arranged on the auxiliary valve body, and a valve outlet is arranged behind the secondary pressure reducing structure; and a gas flow passage between the first-stage pressure reduction structure and the second-stage pressure reduction structure is a low-pressure cavity gas flow passage.
6. A light weight compact dual spring high pressure reducer as recited in claim 5, wherein: the first-stage pressure reducing structure is a throat hole arranged at the lower end of the valve seat.
7. A light weight compact dual spring high pressure reducer as recited in claim 5, wherein: the second-stage pressure reduction structure is provided with a noise reduction flow channel, and the ratio d3/d2 of the equivalent diameter of the noise reduction flow channel to the second-stage pressure reduction structure is 1.1-2.5; the diameter ratio d4/d2 between the outlet diameter of the flow channel and the second-stage pressure reducing structure is 1.5-3.
8. A light weight compact dual spring high pressure reducer as recited in claim 7, wherein: d3/d2 is 1.3-1.8; d4/d2 is 2-2.8.
9. A light weight compact dual spring high pressure reducer as recited in claim 5, wherein: the diameter of the throat hole of the first-stage pressure reducing structure is larger than that of the second-stage pressure reducing structure, and the hydrogen flow rate is controlled through the throat hole of the second-stage pressure reducing structure.
10. A light-weight compact dual-spring high-pressure reducer according to claim 9, characterized in that: distributing the pressure of the high-pressure cavity and the low-pressure cavity through the diameter ratio of the first-stage pressure reducing structure and the second-stage pressure reducing structure; the diameter d1 of the throat of the first stage pressure reducing structure and the diameter d2 of the throat of the second stage pressure reducing structure are as follows: d1/d2 ranges from 1.2 to 2.
11. A light weight compact dual spring high pressure reducer as recited in claim 10, wherein: d1/d2 ranges from 1.4 to 1.8.
12. A light-weight compact dual-spring high-pressure reducer according to claim 5, characterized in that: the valve core assembly is composed of a valve core and a sealing filler embedded in the upper end of the valve core, wherein the sealing filler is made of a non-metal material and is installed in a groove in the upper end of the valve core to protect the first-stage pressure reduction structure and avoid mechanical damage.
13. A light-weight compact dual-spring high-pressure reducer according to claim 1 or 12, characterized in that: the diaphragm assembly is supported by diaphragm, diaphragm pressure pad and the spacing pad of diaphragm and constitutes, and the spacing pad of diaphragm is used for restricting the removal of diaphragm, when the diaphragm supports the effort that receives the vertical direction of main spring assembly, drives the diaphragm and warp, and the diaphragm supports and the vertical removal of diaphragm pressure pad.
14. A light weight compact dual spring high pressure reducer as recited in claim 13, wherein: in the diaphragm assembly, a downward main spring force is provided by the main spring assembly, an upward pressure acted by the low-pressure cavity on the diaphragm and an upward auxiliary spring force provided by the auxiliary spring assembly form a balance relation; the main spring force and the pressure of the diaphragm under the action of the low-pressure cavity are main adjusting forces, the main spring force is far greater than the auxiliary spring force, and the ratio of the main spring force to the auxiliary spring force is between 20 and 40.
15. A light weight compact dual spring high pressure reducer as recited in claim 13, wherein: the ratio of the diameter d5 of the cavity between the diaphragm component and the valve body to the diameter d6 of the valve core is 0.8-2.2.
16. A light-weight compact dual-spring high-pressure reducer according to claim 13, characterized in that: the ratio of the diameter d5 of the cavity between the diaphragm assembly and the valve body to the diameter d6 of the valve core is 0.95-1.7.
17. A light weight compact dual spring high pressure reducer as recited in claim 13, wherein: the upper end of the ejector rod is connected with the membrane support, and the lower end of the ejector rod is connected with the valve cores which are arranged in pairs; along with the deformation of the diaphragm, the ejector rod moves up and down to limit the position of the valve core assembly and control the flow section of the pressure reducing valve.
18. A light-weight compact dual-spring high-pressure reducer according to claim 17, characterized in that: the auxiliary spring assembly consists of an auxiliary spring, an auxiliary spring cap and an auxiliary spring seat, wherein the auxiliary spring and the auxiliary spring seat are arranged in the auxiliary spring cap, the deformation of the auxiliary spring is restricted by the auxiliary spring cap and the auxiliary spring seat, and the auxiliary spring seat is contacted with the valve core; the spring force and the downward thrust of the ejector rod form balance, and the downstream pressure is kept stable in a certain range.
19. A light-weight compact dual-spring high-pressure reducer according to claim 1, characterized in that: sealing rings are arranged between the auxiliary valve body and the valve body, between the valve seat and the valve body, between the valve core assembly and the valve body, and between the auxiliary spring assembly and the valve body, so that sealing is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221987435.6U CN218863319U (en) | 2022-07-29 | 2022-07-29 | Light-weight compact type double-spring high-pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221987435.6U CN218863319U (en) | 2022-07-29 | 2022-07-29 | Light-weight compact type double-spring high-pressure reducer |
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| Publication Number | Publication Date |
|---|---|
| CN218863319U true CN218863319U (en) | 2023-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221987435.6U Active CN218863319U (en) | 2022-07-29 | 2022-07-29 | Light-weight compact type double-spring high-pressure reducer |
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| CN (1) | CN218863319U (en) |
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2022
- 2022-07-29 CN CN202221987435.6U patent/CN218863319U/en active Active
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