CN220339566U - Piston type ultrahigh pressure measuring device - Google Patents
Piston type ultrahigh pressure measuring device Download PDFInfo
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- CN220339566U CN220339566U CN202321403768.4U CN202321403768U CN220339566U CN 220339566 U CN220339566 U CN 220339566U CN 202321403768 U CN202321403768 U CN 202321403768U CN 220339566 U CN220339566 U CN 220339566U
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- pressure
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- piston
- valve cavity
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- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000009530 blood pressure measurement Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model provides a piston type ultrahigh pressure measuring device, which comprises a valve body, a low pressure piston, a high pressure piston and a low pressure gauge, wherein: the valve body is internally provided with a low-pressure valve cavity, a high-pressure valve cavity, a hydraulic cavity, a pressure measuring hole and a pressure applying hole, wherein the high-pressure valve cavity is positioned below the low-pressure valve cavity and communicated with the low-pressure valve cavity, the hydraulic cavity is positioned above the low-pressure valve cavity and communicated with the low-pressure valve cavity, the aperture of the low-pressure valve cavity is larger than that of the high-pressure valve cavity, the pressure measuring hole is arranged above the hydraulic cavity and communicated with the hydraulic cavity, and the pressure applying hole is arranged below the low-pressure valve cavity and communicated with the low-pressure valve cavity; the low-pressure piston is arranged in the low-pressure valve cavity and can slide up and down along the low-pressure valve cavity; the high-pressure piston is arranged in the high-pressure valve cavity and can slide up and down along the high-pressure valve cavity, and the upper end of the high-pressure piston is abutted to the bottom of the low-pressure piston; the hydraulic cavity is filled with liquid plastic; the low pressure gauge is arranged at the top of the valve body. The utility model adopts liquid plastic as pressure medium, which satisfies the ultra-high pressure measuring requirement of more than 1200Mpa.
Description
Technical Field
The utility model relates to the field of pressure measurement, in particular to a piston type ultrahigh pressure measurement device.
Background
The piston pressure measuring device is also called dead weight pressure measuring device, and is a measuring device working by utilizing the hydrostatic balance principle and pascal's law. Hydrostatic balancing is achieved by balancing the force value acting on the piston system with the reaction force generated by the pressure transmitting medium.
The piston system consists of a piston and a valve body, and the piston and the valve body form excellent dynamic seal fit. The effective area of the piston is known, and when a known force value is applied to one end of the piston, the pressure medium at the other end of the piston generates a force equal to and opposite to the known force value and balances the force. Therefore, the pressure of the pressure transmission medium in the system can be obtained through calculation of the acting force value and the effective area of the piston.
The existing ultrahigh pressure measuring device adopts hydraulic oil as a pressure transmission medium, the upper pressure measurement limit of the existing ultrahigh pressure measuring device is generally difficult to exceed 1200Mpa, and the ultrahigh pressure measuring requirement of certain special fields is difficult to meet.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a piston type ultrahigh pressure measuring device, which has the following detailed technical scheme:
the utility model provides a piston superhigh pressure measurement device, includes valve body, low pressure piston, high pressure piston and low pressure manometer, wherein:
the valve body is internally provided with a low-pressure valve cavity, a high-pressure valve cavity, a hydraulic cavity, a pressure measuring hole and a pressure applying hole, wherein the high-pressure valve cavity is positioned below the low-pressure valve cavity and communicated with the low-pressure valve cavity, the hydraulic cavity is positioned above the low-pressure valve cavity and communicated with the low-pressure valve cavity, the aperture of the low-pressure valve cavity is larger than that of the high-pressure valve cavity, the pressure measuring hole is arranged above the hydraulic cavity and communicated with the hydraulic cavity, and the pressure applying hole is arranged below the low-pressure valve cavity and communicated with the low-pressure valve cavity;
the low-pressure piston is arranged in the low-pressure valve cavity and can slide up and down along the low-pressure valve cavity;
the high-pressure piston is arranged in the high-pressure valve cavity and can slide up and down along the high-pressure valve cavity, and the upper end of the high-pressure piston upwards penetrates into the low-pressure valve cavity and is abutted to the bottom of the low-pressure piston;
the hydraulic cavity is filled with liquid plastic;
the low pressure gauge is arranged at the top of the valve body, and the measuring end of the low pressure gauge penetrates into the measuring hole downwards.
In some embodiments, a pressurizing hole which is positioned at the side of the hydraulic cavity and communicated with the hydraulic cavity is also arranged in the valve body; the piston type ultrahigh pressure measuring device further comprises a pressurizing rod arranged in the pressurizing hole.
In some embodiments, the top of the valve body is provided with an exhaust hole communicated with the pressurizing hole, and an exhaust valve is arranged in the exhaust hole.
In some embodiments, the gap between the high-pressure piston and the inner wall of the high-pressure valve cavity is 0.003-0.01 mm, and at least one first O-shaped sealing ring which is abutted with the high-pressure piston is arranged on the inner wall of the high-pressure valve cavity.
In some embodiments, the aperture of the low pressure valve chamber is 5 times the aperture of the high pressure valve chamber.
In some embodiments, at least one second O-ring is provided on the inner wall of the low pressure valve chamber that abuts the abutment piston.
In some embodiments, the piston-type ultra-high pressure measuring device also ensures a sealed copper pad disposed at the lower end of the pressure application hole.
In some embodiments, the piston-type ultrahigh pressure measurement device further comprises a surface seal pad disposed at the junction of the pressure tap and the hydraulic chamber.
In some embodiments, the valve body is a split structure, the valve body includes a lower valve body and an upper valve body, the upper valve body is removably connected to the lower valve body, the low pressure valve chamber, the high pressure valve chamber, and the pressure application hole are disposed on the lower valve body, and the hydraulic chamber and the pressure application hole are disposed on the upper valve body.
In some embodiments, the upper valve body and the lower valve body are connected via a hold-down bolt.
The piston type ultrahigh pressure measuring device provided by the utility model adopts the liquid plastic as the pressure transmission medium, and can greatly improve the upper pressure measuring limit, thereby meeting the ultrahigh pressure measuring requirement of more than 1200Mpa.
Drawings
FIG. 1 is a schematic diagram of a piston-type ultra-high pressure measuring device according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a sealed copper gasket in an embodiment of the utility model;
fig. 1 to 2 include:
valve body 1: an upper valve body 11, a lower valve body 12 and a compression bolt 13;
a low pressure piston 2;
a high-pressure piston 3;
a low pressure gauge 4;
a liquid plastic 6;
a pressurizing rod 7;
an exhaust valve 8;
a first O-ring 9;
a second O-ring seal 10;
sealing the copper pad 110;
surface seal 120.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and the detailed description below, in order to make the above objects, features and advantages of the present utility model more comprehensible.
As shown in fig. 1, the piston type ultrahigh pressure measuring device provided by the utility model comprises a valve body 1, a low pressure piston 2, a high pressure piston 3 and a low pressure gauge 4, wherein:
the valve body 1 is internally provided with a low-pressure valve cavity, a high-pressure valve cavity, a hydraulic pressure cavity, a pressure measuring hole and a pressure applying hole, wherein the high-pressure valve cavity is positioned below the low-pressure valve cavity and communicated with the low-pressure valve cavity, the hydraulic pressure cavity is positioned above the low-pressure valve cavity and communicated with the low-pressure valve cavity, the aperture of the low-pressure valve cavity is larger than that of the high-pressure valve cavity, the pressure measuring hole is arranged above the hydraulic pressure cavity and communicated with the hydraulic pressure cavity, and the pressure applying hole is arranged below the high-pressure valve cavity and communicated with the high-pressure valve cavity.
The low-pressure piston 2 is disposed in the low-pressure valve chamber and is capable of sliding up and down along the low-pressure valve chamber.
The high-pressure piston 3 is arranged in the high-pressure valve cavity and can slide up and down along the high-pressure valve cavity, and the upper end of the high-pressure piston 3 upwards penetrates into the low-pressure valve cavity and is abutted to the bottom of the low-pressure piston 2.
The hydraulic chamber is filled with liquid plastic 6.
The low pressure gauge 4 is arranged at the top of the valve body 1, and the measuring end of the low pressure gauge 4 penetrates into the measuring hole downwards.
The measuring principle of the piston type ultrahigh pressure measuring device is as follows:
the ultrahigh pressure fluid (such as water, oil, etc.) enters the pressure application hole and pushes the high pressure piston 3 upward first, and the high pressure piston 3 in turn pushes the low pressure piston 2 upward and presses the liquid plastic 6. When the high-pressure piston 3 stops moving, the pressures in the low-pressure valve chamber and the high-pressure valve chamber reach static balance. At this time, the low pressure gauge 4 measures the pressure value P at the end of the low pressure piston 2 1 。
The pressure value P of the high-pressure piston 3 is according to pascal's law 2 ＝P 1 * (pressure-bearing area of low-pressure piston 2/pressure-bearing area of high-pressure piston 3), the pressure value P 2 The fluid pressure of the ultra-high pressure fluid to be measured is obtained.
Alternatively, the aperture of the low-pressure valve chamber (equal to the diameter of the low-pressure piston 2) is 5 times the aperture of the high-pressure valve chamber (equal to the diameter of the high-pressure piston 3), i.e., the bearing area of the low-pressure piston 2/the bearing area of the high-pressure piston 3=25. At this time, the fluid pressure value P of the ultra-high pressure fluid to be measured 2 Namely, the pressure value P at the end of the low-pressure piston 2 measured by the low-pressure gauge 4 1 25 times of (3). For example, the pressure value P measured by the low-pressure gauge 4 1 48Mpa, the fluid pressure value of the ultrahigh-pressure fluid is 48Mpa by 25=1200 Mpa.
The liquid plastic 6 has excellent leakage resistance and fluidity, and can greatly improve the pressure measurement upper limit and the reliability of the piston type ultrahigh pressure measuring device, so that the piston type ultrahigh pressure measuring device can meet the ultrahigh pressure measuring requirement of more than 1200Mpa.
Optionally, a pressurizing hole which is positioned at the side of the hydraulic cavity and is communicated with the hydraulic cavity is further arranged in the valve body 1, and the piston type ultrahigh pressure measuring device in the embodiment of the utility model further comprises a pressurizing rod 7 which is arranged in the pressurizing hole. By the pressurizing rod 7, the pressurizing operation of the liquid plastic 6 can be performed.
The top of the valve body 1 is provided with an exhaust hole communicated with the pressurizing hole, an exhaust valve 8 is arranged in the exhaust hole, and the exhaust valve 8 is opened to implement exhaust and pressure relief.
The internal tightness of the ultra-high pressure measurement device, as known to those of ordinary skill in the art, is critical to the pressure measurement performance of the ultra-high pressure measurement device. In order to ensure the internal sealing performance of the piston type ultra-high pressure measuring device of the present utility model, as shown in fig. 1, the gap between the high pressure piston 3 and the inner wall of the high pressure valve chamber may be optionally set to 0.003-0.01 mm. At least one (two in figure 1) first O-shaped sealing ring 10 which is in butt joint with the high-pressure piston 3 is arranged on the inner wall of the high-pressure valve cavity. At least one (two in figure 1) second O-shaped sealing ring 9 which is abutted with the low-pressure piston 2 is arranged on the inner wall of the low-pressure valve cavity. In addition, a surface gasket 120 is further disposed at the connection between the pressure tap and the hydraulic chamber.
As shown in fig. 1 and 2, optionally, the piston type ultra-high pressure measuring device in the embodiment of the utility model further ensures a sealed copper pad 110 disposed at the lower end of the pressure hole, a communication hole for connecting a fluid pipeline is disposed in the sealed copper pad 110, and the fluid pipeline can be connected in a sealing manner through the sealed copper pad 110, so that the fluid to be measured in the fluid pipeline flows into the pressure hole through the communication hole.
In order to facilitate the installation and maintenance of the internal components such as the low-pressure piston 2 and the high-pressure piston 3, as shown in fig. 1, the valve body 1 may be a split structure, the valve body 1 includes a lower valve body 12 and an upper valve body 11, the upper valve body 11 is removably connected to the lower valve body 12, the low-pressure valve cavity, the high-pressure valve cavity and the pressure-applying hole are disposed on the lower valve body 12, and the hydraulic cavity and the pressure-applying hole are disposed on the upper valve body 11.
Optionally, the upper valve body 11 and the lower valve body 12 are detachably screwed via a compression bolt 13.
The utility model has been described above in sufficient detail with a certain degree of particularity. It will be appreciated by those of ordinary skill in the art that the descriptions of the embodiments are merely exemplary and that all changes that come within the true spirit and scope of the utility model are desired to be protected. The scope of the utility model is indicated by the appended claims rather than by the foregoing description of the embodiments.
Claims (10)
1. The utility model provides a piston superhigh pressure measurement device, its characterized in that, piston superhigh pressure measurement device includes valve body, low pressure piston, high pressure piston and low pressure manometer, wherein:
the valve body is internally provided with a low-pressure valve cavity, a high-pressure valve cavity, a hydraulic cavity, a pressure measuring hole and a pressure applying hole, wherein the high-pressure valve cavity is positioned below the low-pressure valve cavity and communicated with the low-pressure valve cavity, the hydraulic cavity is positioned above the low-pressure valve cavity and communicated with the low-pressure valve cavity, the aperture of the low-pressure valve cavity is larger than that of the high-pressure valve cavity, the pressure measuring hole is arranged above the hydraulic cavity and communicated with the hydraulic cavity, and the pressure applying hole is arranged below the high-pressure valve cavity and communicated with the high-pressure valve cavity;
the low-pressure piston is arranged in the low-pressure valve cavity and can slide up and down along the low-pressure valve cavity;
the high-pressure piston is arranged in the high-pressure valve cavity and can slide up and down along the high-pressure valve cavity, and the upper end of the high-pressure piston upwards penetrates into the low-pressure valve cavity and is abutted to the bottom of the low-pressure piston;
the hydraulic cavity is filled with liquid plastic;
the low pressure gauge is arranged at the top of the valve body, and the measuring end of the low pressure gauge penetrates into the measuring hole downwards.
2. The piston type ultrahigh pressure measuring device as claimed in claim 1, wherein a pressurizing hole which is positioned at the side of the hydraulic cavity and communicated with the hydraulic cavity is further arranged in the valve body;
the piston type ultrahigh pressure measuring device further comprises a pressurizing rod arranged in the pressurizing hole.
3. The piston type ultrahigh pressure measuring device as claimed in claim 2, wherein the top of the valve body is provided with an exhaust hole communicated with the pressurizing hole, and an exhaust valve is arranged in the exhaust hole.
4. The piston type ultrahigh pressure measuring device as claimed in claim 1, wherein a gap between the high pressure piston and the inner wall of the high pressure valve cavity is 0.003-0.01 mm, and at least one first O-shaped sealing ring which is in abutting connection with the high pressure piston is arranged on the inner wall of the high pressure valve cavity.
5. The piston type ultrahigh pressure measurement device of claim 1, wherein the aperture of the low pressure valve chamber is 5 times the aperture of the high pressure valve chamber.
6. The piston type ultrahigh pressure measuring device as claimed in claim 1, wherein at least one second O-shaped sealing ring which is abutted with the abutting piston is arranged on the inner wall of the low pressure valve cavity.
7. The piston type ultra-high pressure measuring device as claimed in claim 1, wherein the piston type ultra-high pressure measuring device further ensures a sealing copper pad provided at a lower end of the pressure application hole.
8. The piston type ultrahigh pressure measurement device of claim 1, further comprising a surface gasket disposed at the junction of the pressure tap and the hydraulic chamber.
9. The piston type ultrahigh pressure measurement device as claimed in claim 1, wherein the valve body is of a split type structure, the valve body comprises a lower valve body and an upper valve body, the upper valve body is removably connected to the lower valve body, the low pressure valve cavity, the high pressure valve cavity and the pressure application hole are arranged on the lower valve body, and the hydraulic cavity and the pressure application hole are arranged on the upper valve body.
10. The piston type ultrahigh pressure measurement device of claim 9, wherein the upper valve body and the lower valve body are connected via a compression bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321403768.4U CN220339566U (en) | 2023-06-05 | 2023-06-05 | Piston type ultrahigh pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321403768.4U CN220339566U (en) | 2023-06-05 | 2023-06-05 | Piston type ultrahigh pressure measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220339566U true CN220339566U (en) | 2024-01-12 |
Family
ID=89459640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321403768.4U Active CN220339566U (en) | 2023-06-05 | 2023-06-05 | Piston type ultrahigh pressure measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220339566U (en) |
-
2023
- 2023-06-05 CN CN202321403768.4U patent/CN220339566U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A piston type ultra-high pressure measuring device Granted publication date: 20240112 Pledgee: Wuxi rural commercial bank Limited by Share Ltd. Pledgor: WUXI WEIHAIDA MACHINERY MANUFACTURING Co.,Ltd. Registration number: Y2024980018617 |