A pressure gauge of the stabilizing type

Abstract

The utility model relates to pressure gauge technical field, a kind of pressure gauge of pressure stabilizing, including gauge head and connector, connector is used to and inlet pipe is connected, gauge head has pressure measuring component inside, and the pipeline with connector between pressure measuring component has communication, pipeline at least includes a portion helical gap capillary channel. Gas that inlet pipe comes in enters first cavity by helical gap, realizes pressure measurement finally in gauge head, air can slow down in the process of helical gap, reduce the numerical value of the gauge head to jump caused by unstable airflow, the design does not need to set other complex pressure stabilizing structure, simple structure.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge technology, specifically to a pressure stabilizing type pressure gauge. Background Technology

[0002] A pressure gauge is an instrument that uses an elastic element as its sensing element to measure and indicate pressures higher than ambient pressure. Its applications are extremely widespread, found in almost all industrial processes and scientific research fields. It is ubiquitous in areas such as heat pipe networks, oil and gas transmission, water and gas supply systems, and vehicle repair and maintenance shops. During the use of a pressure gauge, instantaneous overpressure shocks can cause the pointer to deviate, affecting the accuracy of the pressure reading. Existing solutions typically involve installing complex pressure-stabilizing components separately or creating small orifices, resulting in complex structures and poor performance. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a pressure gauge with a stable pressure.

[0004] The technical solution of this utility model is as follows: This utility model provides a pressure stabilizing type pressure gauge, including a gauge head and a connector. The connector is used to connect to the air inlet pipe. The gauge head has a pressure measuring component inside. There is a connecting pipe between the pressure measuring component and the connector. The pipe includes at least a portion of a spiral gap capillary channel.

[0005] Furthermore, the meter head is connected to the mounting block via the first connecting pipe. The mounting block has a first cavity inside and a second cavity inside. The second cavity is connected to the outer connector. One side of the mounting block has a threaded hole. The inner end of the threaded hole communicates with the second cavity. The threaded hole intersects with the first cavity. A bolt is installed in the threaded hole, and the bolt closes the outer end of the threaded hole. The first cavity and the second cavity are connected through a capillary channel with a spiral gap between the threaded hole and the bolt.

[0006] Furthermore, the mounting block is equipped with a pressure relief assembly, which includes a pressure relief valve body. The front end of the second cavity has a mounting hole for mounting the pressure relief valve body. The inner end of the pressure relief valve body passes through the mounting hole and is located in the second cavity, where a sealing plug is installed.

[0007] Furthermore, the outer end of the pressure relief valve body is provided with a pressure relief gas impact surface facing the mounting hole. When pressure is released, the high-speed gas ejected from the mounting hole impacts the pressure relief gas impact surface and applies an outward thrust to the pressure relief valve body.

[0008] Furthermore, symmetrical venting grooves are provided on both sides of the outer end of the mounting hole.

[0009] Furthermore, a button is installed on the outer end of the pressure relief valve body, and the inner end face of the button is the impact surface of the pressure relief gas.

[0010] Furthermore, the external casing of the meter head and mounting block assembly includes a front casing and a rear casing. The front side of the front casing has a first through hole corresponding to the dial portion of the meter head, through which the pressure value on the dial can be observed.

[0011] Furthermore, a bend is formed on the side end of the front shell, and a fixing hole is provided in the bend.

[0012] Furthermore, a third through hole for a switch is provided on the front of the front housing. The switch is installed inside the third through hole, and a sealing cap is fitted on the outer end of the switch. The inner end of the sealing cap is located inside the third through hole and is folded outward to form a flange. The flange at the inner end of the sealing cap fits into the inner end of the third through hole.

[0013] Furthermore, the rear side of the rear shell is provided with an outlet for a pull-out connector, which is L-shaped and at least partially deformable.

[0014] The beneficial effects achieved by this utility model are as follows: In this invention, the gas entering through the intake pipe first enters the second cavity, then passes through the spiral gap into the first cavity, and finally enters the gauge for pressure measurement. The air velocity is slowed down as it passes through the spiral gap, reducing fluctuations in the gauge reading caused by unstable airflow. This is applicable to hydraulic shock absorber systems in automobiles, where instantaneous overpressure shocks can occur during driving. This device effectively reduces the fluctuations caused by these instantaneous overpressure shocks, allowing for better pressure readings. This design eliminates the need for other complex pressure stabilization structures, resulting in a simple structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the right-side structure of this utility model; Figure 3 This is a schematic diagram of the left-side structure of this utility model; Figure 4 This is a top view of the structure of this utility model; Figure 5 This is a schematic diagram of the connection structure between the mounting block and the meter head of this utility model; Figure 6 It is along Figure 5 A cross-sectional view of the FF line; Figure 7 yes Figure 5 The left view; Figure 8 It is along Figure 7 A cross-sectional view of the EE line; Figure 9 This is a schematic diagram of the venting groove on the mounting block; Figure 10 The mounting block corresponds to the cross-sectional view of the second cavity. Detailed Implementation

[0016] To facilitate understanding of this utility model by those skilled in the art, the specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0017] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0019] like Figures 1-10As shown, this utility model provides a pressure-stabilizing pressure gauge, including a housing, which includes a front housing 1 and a rear housing 2. A gauge head 3 is disposed inside the housing, and the gauge head 3 has a pressure measuring component. The front side of the front housing has a first through hole 4 corresponding to the dial portion of the gauge head, through which the pressure value on the dial is observed. A mounting block 5 is also disposed inside the housing, and the mounting block has a first cavity 6 inside. The top outlet of the first cavity 6 is connected to the gauge head 3 through a first connecting pipe 7. A second cavity 8 is also disposed inside the mounting block 5, and a connector 9 is installed at the rear end of the second cavity 8, through which it can be easily connected to an air inlet pipe. There is a connecting pipe between the pressure measuring component and the connector, and the pipe includes at least a portion of a spiral gap capillary channel. The front end of the mounting block... A pressure relief assembly is provided, with a threaded hole 10 on one side of the mounting block. The inner end of the threaded hole 10 communicates with the second cavity, and part of the threaded hole 10 intersects with the first cavity. A bolt 11 is installed in the threaded hole 10, and the bolt 11 seals the outer end of the threaded hole. The first cavity and the second cavity are connected through a capillary channel with a spiral gap between the threaded hole and the bolt. The gas coming in from the intake pipe first enters the second cavity, then enters the first cavity through the spiral gap, and finally enters the meter head to act on the pressure measuring component to achieve pressure measurement. Before the air acts on the pressure measuring component, the flow rate can be slowed down during the process of passing through the capillary channel with the spiral gap, reducing the fluctuation of the meter reading caused by unstable airflow. This design does not require other complex pressure stabilization structures and has a simple structure.

[0020] The pressure relief assembly includes a pressure relief valve body 12. A mounting hole for mounting the pressure relief valve body is opened at the front end of the second cavity. The inner end of the pressure relief valve body 12 passes through the mounting hole and is located in the second cavity, where a sealing plug 13 is provided. When the pressure relief valve body 12 is in the outer limit position, the sealing plug seals the inner end of the mounting hole to achieve the sealing of the second cavity. When the pressure relief valve body 12 is pressed inward, the sealing plug 13 separates from the inner end of the mounting hole to achieve pressure relief. The outer end of the pressure relief valve body is provided with a pressure relief gas impact surface 14 facing the mounting hole. When pressure is relieved, the high-speed gas ejected from the mounting hole impacts the pressure relief gas impact surface 14 and applies an outward thrust to the pressure relief valve body. When the user releases the outer end of the pressure relief valve body, this thrust can cause the pressure relief valve body to move outward and reset.

[0021] Symmetrical exhaust grooves 15 are provided on both sides of the outer end of the mounting hole. With this design, even if the pressure relief valve body 12 is pressed to the inner limit position, the mounting hole will not be blocked, which can ensure smooth gas release. It can also ensure that when the pressure relief valve body 12 is pressed to the inner limit position, the discharged gas will impact the pressure relief gas impact surface 14 more concentratedly. The exhaust is smooth and the impact force is sufficient to ensure the stability of the pressure relief valve body moving to the outside and resetting.

[0022] A button 22 is installed on the outer end of the pressure relief valve body, and the inner end face of the button is the pressure relief gas impact surface 14.

[0023] The rear side of the rear shell is provided with an outlet for a pull-out connector 9. The connector 9 is L-shaped and at least part of it is deformable. When the connector is not connected to an external air tube, it can be hidden inside the outlet. When needed, the connector can be pulled out from inside the outlet.

[0024] A second through hole 16 is provided on the front shell corresponding to the pressure relief component. A third through hole 17 is also provided on the front of the front shell. A switch 18 is installed inside the third through hole. The outer end of the switch extends out of the third through hole 17. A sealing cap 19 is fitted onto the outer end of the switch 18. The inner end of the sealing cap is located inside the third through hole 17 and is folded outward to form a flange. The flange at the inner end of the sealing cap 19 fits against the inner end of the third through hole. This can prevent moisture and other impurities from entering the housing corresponding to the switch 18, ensuring safety during use, such as preventing electric shock, and also improving the service life of the device. The switch is connected to the control unit. When the user starts the switch, the control unit starts to pressurize. This control unit can be an active air pump structure such as an air pump, or a water supply structure for a pressure tank, etc. When the pressure gauge indicates that the specified pressure has been reached, the pressurization can be stopped by closing the control unit through the switch.

[0025] The side end of the front shell 1 forms a bent part 20, and the bent part 20 has a fixing hole 21. The device can be easily fixed to the side of the equipment by means of fixing holes 21 and fixing screws and other structures. After fixing, the switch, button and dial of the device face forward, and the connector 9 faces the rear side. This design can make the device occupy less installation space and the overall design is simpler and more beautiful.

[0026] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A pressure gauge with stabilizing properties, characterized in that: It includes a gauge head and a connector. The connector is used to connect to the intake pipe. The gauge head has a pressure measuring component. There is a connecting pipe between the pressure measuring component and the connector. The pipe includes at least a portion of a spiral gap capillary channel.

2. The pressure gauge with stabilizing properties according to claim 1, characterized in that: The meter head is connected to the mounting block via a first connecting pipe. The mounting block has a first cavity inside and a second cavity inside. The second cavity is connected to the outer connector. A threaded hole is provided on one side of the mounting block. The inner end of the threaded hole communicates with the second cavity. The threaded hole intersects with the first cavity. A bolt is installed in the threaded hole, and the bolt closes the outer end of the threaded hole. The first cavity and the second cavity are connected through a capillary channel with a spiral gap between the threaded hole and the bolt.

3. A pressure gauge with stabilizing properties according to claim 1, characterized in that: The mounting block is equipped with a pressure relief assembly, which includes a pressure relief valve body. The front end of the second cavity has a mounting hole for mounting the pressure relief valve body. The inner end of the pressure relief valve body passes through the mounting hole and is located in the second cavity, where a sealing plug is installed.

4. A pressure gauge with stabilizing properties according to claim 3, characterized in that: The outer end of the pressure relief valve body is provided with a pressure relief gas impact surface facing the mounting hole. When pressure is released, the high-speed gas ejected from the mounting hole impacts the pressure relief gas impact surface and applies an outward thrust to the pressure relief valve body.

5. A pressure gauge with stabilizing properties according to claim 4, characterized in that: Symmetrical venting grooves are provided on both sides of the outer end of the mounting hole.

6. A pressure gauge with stabilizing properties according to claim 4, characterized in that: A button is installed on the outer end of the pressure relief valve body, and the inner end face of the button is the impact surface of the pressure relief gas.

7. A pressure gauge with stabilizing properties according to claim 1, characterized in that: The external casing of the meter head and mounting block assembly includes a front casing and a rear casing. The front side of the front casing has a first through hole corresponding to the dial portion of the meter head, through which the pressure value on the dial can be observed.

8. A pressure gauge with stabilizing properties according to claim 7, characterized in that: The side end of the front shell has a bend, and a fixing hole is provided in the bend.

9. A pressure gauge with stabilizing properties according to claim 7, characterized in that: A third through hole for the switch is also provided on the front of the front shell. The switch is installed inside the third through hole. A sealing cap is fitted on the outer end of the switch. The inner end of the sealing cap is located inside the third through hole and is folded outward to form a flange. The flange at the inner end of the sealing cap fits into the inner end of the third through hole.

10. A pressure gauge with stabilizing properties according to claim 7, characterized in that: The rear side of the rear shell is provided with an outlet for a pull-out connector, which is L-shaped and at least partly deformable.

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