CN219391212U - Pressure gauge - Google Patents
Pressure gauge Download PDFInfo
- Publication number
- CN219391212U CN219391212U CN202320172273.9U CN202320172273U CN219391212U CN 219391212 U CN219391212 U CN 219391212U CN 202320172273 U CN202320172273 U CN 202320172273U CN 219391212 U CN219391212 U CN 219391212U
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- China
- Prior art keywords
- pressure gauge
- overpressure
- spring
- spring tube
- clamping part
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Measuring Fluid Pressure (AREA)
Abstract
The pressure gauge disclosed by the utility model comprises a spring tube, an instrument connector, a transmission mechanism and an overpressure mechanism. The first end of the spring tube is fixed on the instrument connector, and the transmission mechanism is connected between the second end of the spring tube and the pointer. When the pressure of the measured medium is sensed, the elastic deformation of the spring tube enables the second end of the spring tube to generate displacement, so that the gauge pointer is driven to rotate through the transmission mechanism, and the pressure of the measured medium is measured. The overvoltage mechanism comprises a movable clamping part and a fixed clamping part, wherein the fixed clamping part is used for being clamped with the movable clamping part, the movable clamping part is arranged at the second end of the spring tube, and the fixed clamping part is arranged at the instrument joint. When the pressure of the measured medium introduced into the spring tube exceeds the standard, the movable clamping part and the fixed clamping part are clamped, so that the spring tube is prevented from being further deformed, and the overpressure protection of the pressure gauge is realized.
Description
Technical Field
The utility model relates to the technical field of measuring devices, in particular to a pressure gauge.
Background
The pressure gauge is a gauge which displays pressure by transmitting elastic deformation to a pointer by a conversion mechanism of a movement in the gauge through elastic deformation of a sensitive element (Bowden tube, bellows and bellows) in the gauge, and causing the pointer to rotate. The pressure gauge is very common in application, and is almost widely seen in the fields of heating power pipe networks, oil and gas transmission, water and gas supply systems, vehicle maintenance factories, and the like in all industrial process control and technical measurement processes. Because the elastic sensitive element of the pressure gauge has the characteristics of higher mechanical strength, convenient production and the like, the pressure gauge is increasingly widely applied.
The existing mechanical pressure gauge can measure the pressure of the measured medium in a full range, but in actual use, the special condition that the pressure of the measured medium suddenly increases is often met, and at the moment, the overpressure of the pressure gauge is easy to damage and even the danger of medium leakage can be caused.
Therefore, how to avoid damage generated when the pressure gauge is over-pressurized is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
Accordingly, the present utility model is directed to a pressure gauge to avoid damage caused by overpressure.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a pressure gauge, comprising:
a spring tube;
the first end of the spring tube is fixed on the instrument connector;
the transmission mechanism is connected between the second end of the spring tube and the pointer and is used for driving the pointer to rotate through the elastic deformation of the spring tube;
the overvoltage mechanism comprises a movable clamping part and a fixed clamping part, wherein the fixed clamping part is used for being clamped with the movable clamping part, the movable clamping part is arranged at the second end of the spring tube, and the fixed clamping part is arranged at the instrument joint.
Preferably, in the pressure gauge, the fixing clamping portion includes an overpressure clamping piece and an overpressure connecting plate, and the overpressure connecting plate is connected between the overpressure clamping piece and the meter connector;
the movable clamping part comprises a spring clamping piece and a spring connecting plate, wherein the spring connecting plate is connected between the spring clamping piece and the spring tube, and when the pressure of a measured medium exceeds the measuring range of the pressure gauge, the overpressure clamping piece is abutted with the spring clamping piece.
Preferably, in the pressure gauge described above, the overpressure locking piece and the overpressure connecting plate are arranged vertically, and the spring locking piece and the spring connecting plate are arranged vertically.
Preferably, in the pressure gauge, the fixing clamping portion is connected with the meter connector through an overpressure connecting portion, and the overpressure connecting portion is provided with a connecting hole.
Preferably, in the pressure gauge described above, the connection hole is a kidney-shaped hole, and a long axis of the connection hole is arranged along an extending direction of the instrument joint.
Preferably, in the pressure gauge described above, the meter joint includes a meter connecting portion, and a surface of the meter connecting portion is provided with threads for connection.
Preferably, in the pressure gauge, the pressure gauge further includes:
the instrument dial plate, set up on the quotation of instrument dial plate and be used for showing the activity joint portion with the normal scale when fixed joint portion does not joint, and be used for showing the activity joint portion with the excessive pressure scale when fixed joint portion joint.
Preferably, in the pressure gauge, the pressure range of the normal scale is 0MPa to 0.4MPa, and the pressure range of the overpressure scale is 0.4MPa to 1.6MPa.
Preferably, in the pressure gauge, the transmission mechanism includes:
a transmission rod;
the transmission rod is connected between the spring tube and the sector gear;
the pointer gear is meshed with the sector gear and is in transmission connection with the pointer.
Preferably, in the pressure gauge, the pressure gauge further includes:
the pressure gauge comprises a pressure gauge shell, wherein the spring tube, the overpressure mechanism and the transmission mechanism are all arranged in the pressure gauge shell, and one end of the instrument joint is connected with the pressure gauge shell.
The pressure gauge provided by the utility model comprises a spring tube, an instrument connector, a transmission mechanism and an overpressure mechanism. The first end of the spring tube is fixed on the instrument connector, and the transmission mechanism is connected between the second end of the spring tube and the pointer. When the pressure of the measured medium is sensed, the elastic deformation of the spring tube enables the second end of the spring tube to generate displacement, so that the gauge pointer is driven to rotate through the transmission mechanism, and the pressure of the measured medium is measured. The overvoltage mechanism comprises a movable clamping part and a fixed clamping part, wherein the fixed clamping part is used for being clamped with the movable clamping part, the movable clamping part is arranged at the second end of the spring tube, and the fixed clamping part is arranged at the instrument joint. When the pressure of the measured medium introduced into the spring tube exceeds the standard, the movable clamping part and the fixed clamping part are clamped, so that the spring tube is prevented from being further deformed, and the overpressure protection of the pressure gauge is realized. Compared with the prior art, the pressure gauge provided by the utility model can realize overpressure protection of the pressure gauge, and avoid damage to the pressure gauge when the pressure of the measured medium suddenly increases.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the external structure of a pressure gauge according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of the internal structure of a pressure gauge according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a part of an overpressure mechanism according to an embodiment of the present utility model;
fig. 4 is a side view of the internal structure of a pressure gauge according to an embodiment of the present utility model.
Wherein 100 is a spring tube, 110 is a movable clamping part, 111 is a spring clamping piece, 112 is a spring connecting plate, 200 is an instrument connector, 201 is an instrument connecting part, 210 is an overpressure connecting part, 211 is a connecting hole, 220 is a fixed clamping part, 221 is an overpressure clamping piece, 222 is an overpressure connecting plate, 300 is an instrument dial, and 301 is a gauge pointer.
Detailed Description
The utility model discloses a pressure gauge, which is used for avoiding damage caused by overpressure of the pressure gauge.
Hereinafter, embodiments will be described with reference to the drawings. Furthermore, the embodiments shown below do not limit the summary of the utility model described in the claims. The whole contents of the constitution shown in the following examples are not limited to the solution of the utility model described in the claims.
Referring to fig. 1 to 4, the pressure gauge disclosed in the embodiment of the present utility model includes a spring tube 100, a meter connector 200, a transmission mechanism, and an overpressure mechanism. The spring tube 100 is also called a Bowden tube, the first end of the spring tube 100 is fixed to the instrument connector 200 and the transmission mechanism is connected between the second end of the spring tube 100 and the pointer 301. When the pressure of the measured medium is sensed, the elastic deformation of the spring tube 100 causes the second end of the spring tube 100 to displace, so that the gauge pointer 301 is driven to rotate by the transmission mechanism, and the pressure of the measured medium is measured.
The overpressure mechanism comprises a movable clamping part 110 and a fixed clamping part 220 which is used for being clamped with the movable clamping part 110, the movable clamping part 110 is arranged at the second end of the spring tube 100, and the fixed clamping part 220 is arranged at the instrument connector 200. When the pressure of the measured medium introduced into the spring tube 100 exceeds the standard, the movable clamping part 110 and the fixed clamping part 220 are clamped, so that further deformation of the spring tube 100 is avoided, and overpressure protection of the pressure gauge is realized.
Compared with the prior art, the pressure gauge disclosed by the embodiment of the utility model can realize overpressure protection of the pressure gauge, and avoid damage to the pressure gauge when the pressure of the measured medium suddenly increases.
Referring to fig. 2 and 3, in a specific embodiment of the present disclosure, the fixing clip portion 220 includes an overpressure clip piece 221 and an overpressure connection plate 222, and the overpressure connection plate 222 is connected between the overpressure clip piece 221 and the meter connector 200. The movable engagement portion 110 includes a spring engagement piece 111 and a spring connection plate 112, and the spring connection plate 112 is connected between the spring engagement piece 111 and the spring tube 100.
When the pressure is normal, the overpressure clamping piece 221 and the spring clamping piece 111 are opposite and do not interfere with each other, along with the increase of the pressure of the measured medium, the spring tube 100 is further deformed and drives the spring clamping piece 111 to be close to the overpressure clamping piece 221 until the pressure of the measured medium exceeds the specified pressure, the overpressure clamping piece 221 and the spring clamping piece 111 are abutted, at the moment, the spring tube 100 can be further deformed and drives the overpressure clamping piece 221 and the deformed spring clamping piece 111 to move within a certain pressure range until the maximum deformation of the spring tube 100 is reached, and the deformation is stopped.
The overpressure clamping piece 221 and the overpressure connecting plate 222 may be arranged vertically, and the spring clamping piece 111 and the spring connecting plate 112 may be arranged vertically to improve the overpressure limiting effect of the overpressure mechanism.
In a specific embodiment of the present disclosure, the fixing clip portion 220 may be connected to the meter connector 200 through the over-pressure connection portion 210, and the over-pressure connection portion 210 is provided with a connection hole 211 for connection.
In order to adjust the restriction effect of the overpressure mechanism, the connection hole 211 is a kidney-shaped hole, and the long axis of the connection hole 211 is arranged along the extending direction of the meter connector 200, and the hole for connection with the connection hole 211 on the meter connector 200 is a circular hole. The relative position of the fixed clamping part 220 and the instrument connector 200 can be adjusted through the connecting hole 211, so that the positions of the movable clamping part 110 and the fixed clamping part 220 can be adjusted, and the maximum deformation of the spring tube 100 can be adjusted.
It should be noted that, the connection hole 211 may be a circular hole, and at this time, a hole on the meter connector 200 for connecting with the connection hole 211 is a kidney-shaped hole, and the adjustment of the relative positions of the fixing clip portion 220 and the meter connector 200 may also be achieved in this scheme.
To facilitate the installation of the pressure gauge, the meter connector 200 includes a meter connection portion 201, the surface of the meter connection portion 201 being provided with threads for threaded connection.
The pressure gauge further comprises an instrument dial 300, wherein normal scales for displaying the movable clamping part 110 and the overpressure scales for displaying the movable clamping part 110 when the movable clamping part 110 is clamped are arranged on the dial surface of the instrument dial 300.
In a specific embodiment of the present disclosure, as shown in fig. 1, the pressure range of the normal scale is 0MPa to 0.4MPa, and the pressure range of the overpressure scale is 0.4MPa to 1.6MPa. When the overpressure grip tab 221 and the spring grip tab 111 are not in contact, the gauge hand 301 points to the normal scale, and when the overpressure grip tab 221 and the spring grip tab 111 are in contact, the gauge hand 301 points to the overpressure scale. The pressure gauge disclosed by the embodiment of the utility model improves the upper limit of the measuring range of pressure measurement, and the pressure bearing capacity of the pressure gauge can reach 2-4 times of the original pressure bearing capacity.
To convert the elastic deformation of the spring tube 100 into an angular displacement of the rotation of the hands 301, the transmission mechanism comprises a transmission rod, a sector gear and a hands gear. The transmission rod is connected between the spring tube 100 and a sector gear which is meshed with a pointer gear which is in transmission connection with the pointer 301. When the pressure of the medium to be measured is sensed, the elastic deformation of the spring tube 100 drives the transmission rod to move, the transmission rod moves to drive the sector gear to rotate, the sector gear rotates to enable the pointer gear to rotate, and the pointer 301 follows the pointer gear, so that the indication of pressure scales is realized.
To protect the structure of the pressure gauge, the spring tube 100, the overpressure mechanism and the transmission mechanism are all provided in the pressure gauge housing, and one end of the instrument connector 200 is connected to the pressure gauge housing.
The terms first and second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to the listed steps or elements but may include steps or elements not expressly listed.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A pressure gauge, comprising:
a spring tube (100);
a meter connector (200), a first end of the spring tube (100) being secured to the meter connector (200);
the transmission mechanism is connected between the second end of the spring tube (100) and the pointer (301) and is used for driving the pointer (301) to rotate through elastic deformation of the spring tube (100);
the overvoltage mechanism comprises a movable clamping part (110) and a fixed clamping part (220) used for being clamped with the movable clamping part (110), the movable clamping part (110) is arranged at the second end of the spring tube (100), and the fixed clamping part (220) is arranged at the instrument joint (200).
2. The pressure gauge according to claim 1, characterized in that the fixing clip portion (220) comprises an overpressure clip piece (221) and an overpressure connection plate (222), the overpressure connection plate (222) being connected between the overpressure clip piece (221) and the meter connector (200);
the movable clamping portion (110) comprises a spring clamping piece (111) and a spring connecting plate (112), the spring connecting plate (112) is connected between the spring clamping piece (111) and the spring tube (100), and when the pressure of a measured medium exceeds the measuring range of the pressure gauge, the overpressure clamping piece (221) is abutted with the spring clamping piece (111).
3. The pressure gauge according to claim 2, characterized in that the overpressure clamping piece (221) and the overpressure connecting plate (222) are arranged vertically, and the spring clamping piece (111) and the spring connecting plate (112) are arranged vertically.
4. The pressure gauge according to claim 1, characterized in that the fixing clip (220) is connected to the meter connector (200) by means of an overpressure connection (210), the overpressure connection (210) being provided with a connection hole (211).
5. The pressure gauge according to claim 4, characterized in that the connection hole (211) is a kidney-shaped hole, and that the long axis of the connection hole (211) is arranged in the extension direction of the instrument joint (200).
6. The pressure gauge according to claim 1, characterized in that the meter connection (200) comprises a meter connection (201), the surface of the meter connection (201) being provided with threads for connection.
7. The pressure gauge of claim 1, further comprising:
the instrument dial plate (300), set up on the quotation of instrument dial plate (300) be used for showing movable joint portion (110) with normal scale when fixed joint portion (220) do not joint, and be used for showing the excessive pressure scale when movable joint portion (110) with fixed joint portion (220) joint.
8. The pressure gauge of claim 7, wherein the normal scale has a pressure range of 0MPa to 0.4MPa and the overpressure scale has a pressure range of 0.4MPa to 1.6MPa.
9. The pressure gauge of claim 1, wherein the transmission mechanism comprises:
a transmission rod;
a sector gear, the transmission rod being connected between the spring tube (100) and the sector gear;
the sector gear is meshed with the pointer gear, and the pointer gear is in transmission connection with the pointer (301).
10. The pressure gauge according to any one of claims 1-9, further comprising:
the pressure gauge comprises a pressure gauge shell, wherein the spring tube (100), the overpressure mechanism and the transmission mechanism are arranged in the pressure gauge shell, and one end of the instrument joint (200) is connected with the pressure gauge shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320172273.9U CN219391212U (en) | 2023-01-18 | 2023-01-18 | Pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320172273.9U CN219391212U (en) | 2023-01-18 | 2023-01-18 | Pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219391212U true CN219391212U (en) | 2023-07-21 |
Family
ID=87190806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320172273.9U Active CN219391212U (en) | 2023-01-18 | 2023-01-18 | Pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219391212U (en) |
-
2023
- 2023-01-18 CN CN202320172273.9U patent/CN219391212U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |