CN210661529U - High-pressure piston group - Google Patents
High-pressure piston group Download PDFInfo
- Publication number
- CN210661529U CN210661529U CN201921421019.8U CN201921421019U CN210661529U CN 210661529 U CN210661529 U CN 210661529U CN 201921421019 U CN201921421019 U CN 201921421019U CN 210661529 U CN210661529 U CN 210661529U
- Authority
- CN
- China
- Prior art keywords
- pressure
- section
- pressure valve
- nozzle
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses a high pressure piston group, including spring holder, high pressure valve base, high pressure spring, high pressure valve axle, nozzle gasket and nozzle, high pressure piston group assembles spring holder, high pressure valve base, high pressure spring and high pressure valve axle in the valve body exhaust passage of relief pressure valve through the nozzle. The high-pressure piston group has the advantages that when the pressure is not regulated, the valve body exhaust channel of the pressure reducing valve is sealed through the high-pressure valve shaft, when the pressure is regulated, the first shaft section of the high-pressure valve shaft is pressed down, the pressure can be regulated, and the regulation mode is simple; the high-pressure piston set is arranged in the valve body, and the structure is small and flexible.
Description
Technical Field
The utility model relates to a relief pressure valve technical field, in particular to a high pressure piston group for in high pressure relief pressure valve.
Background
At present, the condition that piston pressure climbs upwards can appear in the relief valve that uses under the high pressure operating mode, and the piston group who uses in the current relief valve can't satisfy the operating mode requirement.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be applied to high-pressure piston group of adjustable pressure under the high-pressure operating mode, the utility model discloses the technical scheme who takes is:
a high-pressure piston group, which comprises a spring seat, a high-pressure valve base, a high-pressure spring, a high-pressure valve shaft and a nozzle,
the high-pressure valve shaft consists of a first shaft section, a conical frustum section, a cylindrical section and a second shaft section, wherein the first shaft section, the conical frustum section, the cylindrical section and the second shaft section are sequentially connected, and the large end of the conical frustum section is connected with the cylindrical section;
the nozzle is provided with a pressure relief channel, and the first shaft section of the high-pressure valve shaft is inserted into the pressure relief channel of the nozzle and protrudes out of the upper end surface of the nozzle;
the nozzle gasket is embedded into a gasket groove arranged on the lower end face of the nozzle, and the nozzle gasket is contacted with the small end of the frustum section;
the high-pressure valve base is provided with a central hole which is penetrated by the second shaft section of the high-pressure valve shaft, and the outer surface of the lower part of the high-pressure valve base is provided with a conical surface;
the spring seat is axially provided with a pressure relief air outlet channel, and the second shaft section of the high-pressure valve shaft penetrates through the central hole of the high-pressure valve base and extends into the pressure relief air outlet channel; the lower end surface of the spring seat is concavely provided with a pressure relief air inlet passage with two ends penetrating through, and the pressure relief air inlet passage is communicated with the pressure relief air outlet passage;
the high-pressure spring is sleeved on the second shaft section of the high-pressure valve shaft, one end of the high-pressure spring props against the end face of the cylindrical section, and the other end of the high-pressure spring props against the upper end face of the high-pressure valve base; the conical surface at the lower part of the high-pressure valve base is inserted into a conical hole which is arranged in the concave way on the upper end surface of the spring seat;
the high-pressure piston group assembles the spring seat, the high-pressure valve base, the high-pressure spring and the high-pressure valve shaft in a valve body exhaust passage of the pressure reducing valve through the nozzle.
It is right to the utility model discloses technical scheme's preferred, set up conical recess on the terminal surface of the tip contact of nozzle gasket and circular cone platform section, the nozzle gasket adopts the PFA material to make. The PFA material in the high-pressure piston group has extremely strong corrosion resistance, can be applied to the working conditions of toxic gas and corrosive gas,
it is right to the utility model discloses technical scheme's preferred, first shaft section, circular cone platform section, cylinder section and second shaft section structure as an organic whole.
It is right the utility model discloses technical scheme's preferred, the diameter of first shaft section is less than the diameter of second shaft section.
It is right to the utility model discloses technical scheme's preferred, high pressure valve base sets up the opening that runs through terminal surface about the high pressure valve base along the axial, the opening communicates with the centre bore of high pressure valve base. The utility model discloses the structural design of high pressure valve base does benefit to the adjustment of the pressure value of also being convenient for simultaneously of installation location.
To the utility model discloses technical scheme's preferred, the nozzle surface sets up the external screw thread of being connected with valve body exhaust passage. The thread setting is easy to assemble.
To the utility model discloses technical scheme's preferred, spring holder, high pressure valve axle and nozzle adopt 316L stainless steel to make.
Right the utility model discloses technical scheme's preferred, the concave positioning groove who supplies the high-pressure spring other end to stretch into is set up to the up end of high pressure valve base.
The utility model has the advantages compared with the prior art:
according to the high-pressure piston group, the valve body exhaust channel of the pressure reducing valve is sealed through the high-pressure valve shaft when pressure is not regulated, the first shaft section of the high-pressure valve shaft is pressed down when pressure is regulated, pressure can be regulated, and the regulation mode is simple; the high-pressure piston set is arranged in the valve body, and the structure is small and flexible.
Drawings
Fig. 1 is an exploded view of the structure of the embodiment.
Fig. 2 is a state diagram of the high-pressure piston group when the pressure is not adjusted.
Fig. 3 is a state diagram of the high-pressure piston group during pressure adjustment.
Detailed Description
In order to make the disclosure of the present invention more comprehensible, the following description is further made in conjunction with the accompanying fig. 1 to 3 and the embodiments.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1:
a high-pressure piston group comprises a spring seat 1, a high-pressure valve base 2, a high-pressure spring 3, a high-pressure valve shaft 4 and a nozzle 6. In the high-pressure piston group of the embodiment, the spring seat 1, the high-pressure valve base 2, the high-pressure spring 3 and the high-pressure valve shaft 4 are assembled in a valve body exhaust passage of the pressure reducing valve through the nozzle 6. The outer surface of the nozzle 6 is provided with an external thread connected with the exhaust passage of the valve body.
As shown in fig. 1, the high pressure valve shaft 4 is composed of a first shaft section 41, a truncated cone section 42, a cylindrical section 43 and a second shaft section 44, and the first shaft section 41, the truncated cone section 42, the cylindrical section 43 and the second shaft section 44 are of an integral structure. The first shaft section 41, the frustum-conical section 42, the cylindrical section 43 and the second shaft section 44 are connected in series, the first shaft section 41 having a smaller diameter than the second shaft section 44. The large end of the frustum section 42 is connected with the cylinder section 43; the nozzle 6 is provided with a pressure relief channel 61, the first shaft section 41 of the high-pressure valve shaft 4 is inserted into the pressure relief channel 61 of the nozzle 6 and protrudes out of the upper end face of the nozzle 6, the nozzle gasket 5 is embedded into a gasket groove arranged on the lower end face of the nozzle 6, and the nozzle gasket 5 is contacted with the small end of the frustum section 42; the end face of the nozzle gasket 5 contacting with the small end of the cone frustum section 42 is provided with a cone-shaped groove, and the nozzle gasket 5 is made of PFA material. The nozzle gasket 5 in the high-pressure piston assembly is made of PFA (Perfluoro fluoro-alkoxy) material, and the PFA material is extremely strong in corrosion resistance, so that the high-pressure piston assembly can be applied to the working conditions of toxic gas and corrosive gas.
As shown in fig. 1, the high pressure valve base 2 is provided with a central hole for the second shaft section 44 of the high pressure valve shaft 4 to pass through, and the outer surface of the lower part of the high pressure valve base 2 is provided with a conical surface 21; the spring seat 1 is provided with a pressure relief air outlet channel 11 along the axial direction, and the second shaft section 44 of the high-pressure valve shaft 4 penetrates through the central hole of the high-pressure valve base 2 and extends into the pressure relief air outlet channel 11; the lower end surface of the spring seat 1 is concavely provided with a pressure relief air inlet channel 13 with two ends penetrating, and the pressure relief air inlet channel 13 is communicated with the pressure relief air outlet channel 11; the high-pressure spring 3 is sleeved on the second shaft section 44 of the high-pressure valve shaft 4, one end of the high-pressure spring 3 props against the end face of the cylindrical section 43, and the other end of the high-pressure spring 3 props against the upper end face of the high-pressure valve base 2; the conical surface 21 at the lower part of the high-pressure valve base 2 is inserted into the conical hole 12 which is arranged in the concave way on the upper end surface of the spring seat 1.
The high-pressure valve base 2 is provided with an opening which penetrates through the upper end surface and the lower end surface of the high-pressure valve base 2 along the axial direction, and the opening is communicated with a central hole of the high-pressure valve base 2. The utility model discloses high pressure valve base 2's structural design does benefit to the adjustment of the pressure value of also being convenient for simultaneously of installation location.
The upper end surface of the high-pressure valve base 2 is concavely provided with a positioning groove for the other end of the high-pressure spring 3 to extend into, and the high-pressure spring 3 extends into the positioning groove to be convenient for positioning and installation.
As shown in fig. 2 and 3, when the pressure is not adjusted, the distance of the first shaft section 41 of the high-pressure valve shaft 4 protruding out of the upper end surface of the nozzle 6 is defined as a, the length of the high-pressure spring 3 is defined as B, and the adjustable pressure distance is defined as C.
For example, in this embodiment, when the pressure is not adjusted, a is 3.27mm, B is 6.47mm, the spring deformation restoring force of the high-pressure spring 3 is 7.14N, the adjustable pressure distance C is 3.17mm, and the designed actual adjustment distance is 3 mm.
When the pressure regulating operation is realized, the inlet pressure of the pressure reducing valve is 20MPa, the distance between the pressing high-pressure valve shaft and the pressure regulating valve shaft is defined as h, when h is 1mm, the outlet pressure can be adjusted to 4-6MPa (the influence of specific numerical fertilization processing technology, assembly error and the like), and when h is 3mm, the outlet pressure can be adjusted to 15 MPa.
The pressure of the high-pressure piston group is adjustable, and the condition that the pressure of the piston climbs upwards is effectively avoided.
The utility model discloses the part that does not relate to all is the same with prior art or adopts prior art to realize.
The embodiments of the present invention are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the content of the claims of the present invention should be regarded as the technical scope of the present invention.
Claims (8)
1. A high-pressure piston group is characterized by comprising a spring seat (1), a high-pressure valve base (2), a high-pressure spring (3), a high-pressure valve shaft (4), a nozzle gasket (5) and a nozzle (6),
the high-pressure valve shaft (4) is composed of a first shaft section (41), a cone frustum section (42), a cylinder section (43) and a second shaft section (44), the first shaft section (41), the cone frustum section (42), the cylinder section (43) and the second shaft section (44) are sequentially connected, and the large end of the cone frustum section (42) is connected with the cylinder section (43);
the nozzle (6) is provided with a pressure relief channel (61), and the first shaft section (41) of the high-pressure valve shaft (4) is inserted into the pressure relief channel (61) of the nozzle (6) and protrudes out of the upper end surface of the nozzle (6);
the nozzle gasket (5) is embedded into a gasket groove arranged on the lower end face of the nozzle (6), and the nozzle gasket (5) is contacted with the small end of the frustum section (42);
the high-pressure valve base (2) is provided with a central hole for the second shaft section (44) of the high-pressure valve shaft (4) to penetrate through, and the outer surface of the lower part of the high-pressure valve base (2) is provided with a conical surface (21);
the spring seat (1) is axially provided with a pressure relief air outlet channel (11), and a second shaft section (44) of the high-pressure valve shaft (4) penetrates through a central hole of the high-pressure valve base (2) and extends into the pressure relief air outlet channel (11); the lower end surface of the spring seat (1) is concavely provided with a pressure relief air inlet (13) with two ends penetrating, and the pressure relief air inlet (13) is communicated with the pressure relief air outlet channel (11);
the high-pressure spring (3) is sleeved on the second shaft section (44) of the high-pressure valve shaft (4), one end of the high-pressure spring (3) is propped against the end face of the cylindrical section (43), and the other end of the high-pressure spring (3) is propped against the upper end face of the high-pressure valve base (2); the conical surface (21) at the lower part of the high-pressure valve base (2) is inserted into the conical hole (12) which is concavely arranged on the upper end surface of the spring seat (1);
the high-pressure piston group assembles the spring seat (1), the high-pressure valve base (2), the high-pressure spring (3) and the high-pressure valve shaft (4) in a valve body exhaust passage of the pressure reducing valve through the nozzle (6).
2. The high-pressure piston group as claimed in claim 1, characterized in that the end face of the nozzle gasket (5) contacting with the small end of the frustum-conical section (42) is provided with a conical recess, and the nozzle gasket (5) is made of PFA.
3. The high pressure piston group according to claim 1, characterized in that the first shaft section (41), the frustum-conical section (42), the cylindrical section (43) and the second shaft section (44) are of one-piece construction.
4. The high pressure piston group according to claim 1, characterized in that the diameter of the first shaft section (41) is smaller than the diameter of the second shaft section (44).
5. The high-pressure piston group as claimed in claim 1, characterized in that the high-pressure valve seat (2) is provided with openings running through the upper and lower end faces of the high-pressure valve seat (2) in the axial direction, and the openings are communicated with the central hole of the high-pressure valve seat (2).
6. A high-pressure piston group according to claim 1, characterized in that the outer surface of the nozzle (6) is provided with an external thread for connection to the exhaust channel of the valve body.
7. The high-pressure piston group as claimed in claim 1, characterized in that the spring seat (1), the high-pressure valve shaft (4) and the nozzle (6) are made of 316L stainless steel.
8. The high-pressure piston group as claimed in claim 1, characterized in that the upper end face of the high-pressure valve base (2) is concavely provided with a positioning groove into which the other end of the high-pressure spring (3) extends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921421019.8U CN210661529U (en) | 2019-08-29 | 2019-08-29 | High-pressure piston group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921421019.8U CN210661529U (en) | 2019-08-29 | 2019-08-29 | High-pressure piston group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210661529U true CN210661529U (en) | 2020-06-02 |
Family
ID=70817816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921421019.8U Active CN210661529U (en) | 2019-08-29 | 2019-08-29 | High-pressure piston group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210661529U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630790A (en) * | 2019-08-29 | 2019-12-31 | 南京伟易达机电科技发展有限公司 | High-pressure piston group |
-
2019
- 2019-08-29 CN CN201921421019.8U patent/CN210661529U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630790A (en) * | 2019-08-29 | 2019-12-31 | 南京伟易达机电科技发展有限公司 | High-pressure piston group |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8038121B2 (en) | Fluid control valve with sensing port | |
| CN105546208B (en) | Pressure reducing valve | |
| CN210661529U (en) | High-pressure piston group | |
| US20180320682A1 (en) | Relief valve assembly and components thereof | |
| CN110630792A (en) | Gas regulator | |
| CN102734481A (en) | Opening and closing valve for high-pressure gas | |
| CN110159811B (en) | Pressure regulating overflow valve of high-pressure pump | |
| CN110630790A (en) | High-pressure piston group | |
| US6953053B2 (en) | Pressure relief valve assembly | |
| CN210661536U (en) | Gas regulator | |
| CN210715379U (en) | Integral type conical surface sealing pressure measuring joint | |
| WO2004053369A1 (en) | High pressure check valve | |
| CN208900256U (en) | Check valve-type fuel oil for vehicles pressure regulator | |
| CN111306376B (en) | Pipe connector | |
| CN213017937U (en) | Adjustable constant flow valve | |
| CN2339815Y (en) | Super-high-pressure plunger pump one-way valve | |
| EP3604745A3 (en) | Erosion resistant steam valve | |
| CN220337558U (en) | Cock type ultrahigh pressure one-way valve | |
| CN207661175U (en) | A kind of relief valve and its gas heater | |
| CN109763925A (en) | A kind of high-pressure fuel-feed pump pump head component | |
| CN213929569U (en) | Pressure reducing valve | |
| CN216010373U (en) | Oil pump with independent overflow valve | |
| CN218094757U (en) | Pipe fitting joint subassembly | |
| CN212775756U (en) | Check valve | |
| CN211649073U (en) | Relief valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230316 Address after: Building 2, No. 29, Jingshan East Road, Gaochun Economic Development Zone, Gaochun District, Nanjing City, Jiangsu Province, 211300 Patentee after: Nanjing Weiyida Instrument Technology Co.,Ltd. Address before: 211316 29 Jingshan East Road, Gaochun Economic Development Zone, Nanjing, Jiangsu Patentee before: NANJING VTECH ELECTRO-MECHANICAL TECHNOLOGY DEVELOPMENT Co.,Ltd. |