Vibration-resistant pressure gauge

Abstract

The utility model is suitable for the field of pressure gauges, and provides a vibration-resistant pressure gauge, which comprises a pressure gauge body provided with a connecting part and mounted at a mounting port of a pipeline to be measured, and a plugging piece mounted on the connecting part, and the plugging piece is arranged around the communication port of the connecting part in a surrounding manner and is attached to the inner wall of the mounting port after being mounted, so that a pressure relief gap at the connecting part caused by vibration of the pressure gauge can be eliminated, and the precision of a detection numerical value of the pressure gauge is ensured.

Description

Technical Field

[0001] The utility model relates to the field of pressure gauges, in particular to a vibration-resistant pressure gauge. Background Art

[0002] With the advancement of precision agriculture, pressure gauges have become a key tool for achieving efficient, water-saving irrigation. Whether using drip or sprinkler irrigation systems, precise control of water pressure is required to ensure even and effective distribution of water to crop roots. Pressure gauges, capable of monitoring pressure changes in the irrigation system in real time, are crucial for maintaining system efficiency and crop health.

[0003] During installation, a pressure gauge's connector is typically attached to the pipe via a threaded connection. However, during use, the strength of the threaded connection can be weakened by external forces (primarily vibration), leading to pressure relief at the connection and affecting the gauge's accuracy.

[0004] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the present utility model is to provide a vibration-resistant pressure gauge, which can eliminate the pressure relief gap at the connection caused by vibration of the pressure gauge and ensure the detection value accuracy of the pressure gauge.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a vibration-resistant pressure gauge, including a pressure gauge body provided with a connecting portion and installed at the installation port of the pipeline to be measured, and a sealing member installed on the connecting portion; the sealing member is arranged around the periphery of the connecting port of the connecting portion and fits with the inner wall of the installation port after installation.

[0007] According to the vibration-resistant pressure gauge of the present invention, the blocking member is an annular sealing gasket; and an annular mounting groove for mounting the blocking member is provided on the outer wall of the connecting portion.

[0008] According to the vibration-resistant pressure gauge of the present invention, the sealing part includes a mounting part connected to the connecting part and a sealing part extending to one side thereof to form a cylindrical structure; when installed, the opening direction of the sealing part is opposite to the fluid flow direction; the sealing part is made of elastic material.

[0009] According to the vibration-resistant pressure gauge of the present invention, a mounting groove for the mounting portion is provided on the connecting portion; the mounting portion is installed in the mounting groove in a nested manner.

[0010] According to the vibration-resistant pressure gauge of the present invention, the blocking portion is a conical cylindrical structure, and the cross section thereof gradually increases along the opening direction thereof.

[0011] According to the vibration-resistant pressure gauge of the present invention, a positioning ring is fixed to the free end of the sealing portion; the diameter of the positioning ring is smaller than the diameter of the installation opening.

[0012] The utility model provides a vibration-resistant pressure gauge, comprising a pressure gauge body provided with a connecting portion and installed at the installation port of the pipeline to be measured, and a sealing member installed on the connecting portion; the connecting portion is a convex columnar structure, and its outer wall has a thread for connection. When installed, the connecting portion is screwed into the installation port of the pipeline to be measured. The connecting portion has a channel for connecting the internal pressure detection structure. The sealing member is used to seal the gap formed between the connecting portion and the installation port when the pressure gauge is subjected to external force vibration and the threaded connection becomes loose. The sealing member is arranged around the connecting port of the connecting portion and fits with the inner wall of the installation port after installation. The utility model can eliminate the pressure relief gap at the connection caused by vibration of the pressure gauge, thereby ensuring the accuracy of the detection value of the pressure gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an explosion diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the installation of the utility model;

[0015] Figure 3 This is a schematic structural diagram of the blocking member of the utility model;

[0016] Figure 4 It is a structural diagram of the mounting groove on the connecting part;

[0017] In the figure, 1-pressure gauge body, 11-connecting part, 12-installation port, 2-sealing piece, 21-installation part, 22-sealing part, 23-positioning ring, 24-installation groove. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] See also Figure 1 The present invention provides a vibration-resistant pressure gauge comprising a pressure gauge body 1 having a connecting portion 11 and mounted to an installation opening 12 of a pipe to be measured, and a plugging member 2 mounted on the connecting portion 11. The connecting portion 11 is a convex cylindrical structure having an outer wall having a connecting thread. During installation, the connecting portion 11 is screwed into the installation opening 12 of the pipe to be measured. The connecting portion 11 has a passageway therein for connecting to an internal pressure detection structure.

[0020] The blocking member 2 is used to block the gap between the connection portion 11 and the mounting opening 12 caused by loosening of the threaded connection when the pressure gauge is subjected to external vibration. The blocking member 2 is arranged around the connecting opening of the connection portion 11 and fits against the inner wall of the mounting opening 12 after installation.

[0021] The present application provides a sealing member structure under the first embodiment, wherein the sealing member 2 is an annular sealing gasket (a rubber gasket can be used); an annular mounting groove for mounting the sealing member 2 is provided on the outer wall of the connecting portion 11, and the sealing gasket can be sleeved on the annular mounting groove. During sealing operation, the sealing gasket uses itself to block the gap formed between the connecting portion 11 and the mounting opening 12. However, since this structure also needs to consider the installation space of the connecting portion 11, the maximum diameter of the sealing gasket is limited. The outer diameter of the connecting portion 11 + the maximum diameter of the sealing gasket should be equal to or slightly smaller than the inner diameter of the mounting opening 12, which will affect the sealing effect. There is a phenomenon that the gap formed between the connecting portion 11 and the mounting opening 12 is larger than the sealing area of ​​the sealing gasket.

[0022] See also Figure 1 、 Figure 2 、 Figure 3 , in this regard, the present application also provides another embodiment structure, the blocking member 2 includes a mounting portion 21 connected to the connecting portion 11 and a blocking portion 22 extending to one side thereof to form a cylindrical structure. Of course, the blocking portion 22 can also be directly connected to the connecting portion 11, but considering that the blocking portion 22 will deform in the anti-blocking state (details will be described below) and the wall thickness is relatively thin, it is easy to be damaged (convenient in the production or transportation process), so the quick-release structure of the mounting portion 21 and the connecting portion 11 can facilitate replacement; the connecting portion 11 is provided with a mounting groove for the mounting portion 21; the mounting groove 24 can be an annular groove provided on the outer wall of the connecting portion 11, or a countersunk groove provided at the end of the connecting portion 11 (in this embodiment, the mounting groove is a countersunk groove provided at the end of the connecting portion 11, Figure 4 As shown), the mounting portion 21 is installed in the mounting groove in a nested manner.

[0023] The cylindrical structure can be a conical or cylindrical structure (the blocking portion 22 is a conical structure, and its cross-section gradually increases along its opening direction). During installation, the opening direction of the blocking portion 22 is opposite to the fluid flow direction; the blocking portion 22 is made of an elastic material (traditionally, rubber can be used).

[0024] Before installation, no pressure is released in the pipeline to be measured. After the connecting part 11 and the sealing part 2 of the pressure gauge are installed in the installation port 12, the pipeline to be measured is filled with pressure. The pressure at the installation port 12 will drive the sealing part 22 to expand and deform, causing it to produce a blocking effect. If a gap is formed between the connecting part 11 and the installation port 12, the sealing part 22 will lead the pressure into the communicating port of the connecting part 11, and will not be released from the gap, thereby ensuring the accuracy of the pressure gauge value.

[0025] Preferably, to ensure that the blocking portion 22 stably directs pressure into the communicating opening of the connecting portion 11, a positioning ring 23 is fixed to the free end of the blocking portion 22. The positioning ring 23 may be made of plastic or metal, and the diameter of the positioning ring 23 is smaller than the diameter of the mounting opening 12. The positioning ring 23 ensures tension at the free opening of the blocking portion 22, preventing it from being closed due to pressure, thereby preventing the blocking portion 22 from failing to provide a blocking effect.

[0026] In summary, the utility model provides a vibration-resistant pressure gauge, comprising a pressure gauge body provided with a connecting portion and installed at the installation port of the pipeline to be measured, and a sealing member installed on the connecting portion; the connecting portion is a convex columnar structure, and its outer wall has a thread for connection. When installed, the connecting portion is screwed into the installation port of the pipeline to be measured. The connecting portion has a channel connected to the internal pressure detection structure. The sealing member is used to seal, and when the pressure gauge is subjected to external force vibration, the threaded connection becomes loose, and a gap is formed between the connecting portion and the installation port. The sealing member is arranged around the connecting port of the connecting portion, and fits with the inner wall of the installation port after installation. The utility model can eliminate the pressure relief gap at the connection caused by vibration of the pressure gauge, thereby ensuring the accuracy of the detection value of the pressure gauge.

[0027] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A vibration-resistant pressure gauge, characterized in that: It includes a pressure gauge body provided with a connecting portion and mounted to the mounting port of the pipeline to be measured, and a blocking piece mounted on the connecting portion; The blocking piece is arranged around the periphery of the connecting opening of the connecting portion and fits with the inner wall of the installation opening after installation.

2. The vibration-resistant pressure gauge according to claim 1, characterized in that: The blocking member is an annular sealing gasket; An annular mounting groove for mounting a blocking member is provided on the outer wall of the connecting portion.

3. The vibration-resistant pressure gauge according to claim 1, characterized in that: The blocking member includes a mounting portion connected to the connecting portion and a blocking portion extending to one side thereof to form a cylindrical structure; During installation, the opening direction of the blocking portion is opposite to the fluid flow direction; The blocking portion is made of elastic material.

4. The vibration-resistant pressure gauge according to claim 3, characterized in that: The connecting portion is provided with a mounting groove for the mounting portion; The mounting portion is mounted in the mounting groove in a nested manner.

5. The vibration-resistant pressure gauge according to claim 3 or 4, characterized in that: The blocking portion is a conical cylindrical structure, and its cross section gradually increases along its opening direction.

6. The vibration-resistant pressure gauge according to claim 5, characterized in that: A positioning ring is fixed to the free end of the blocking portion; The diameter of the positioning ring is smaller than the diameter of the installation opening.

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