Single-needle mechanical temperature compensation pressure gauge structure

Abstract

The invention belongs to the field of pressure gauges, and particularly relates to a single-needle mechanical temperature compensation pressure gauge structure, which comprises a pressure gauge body and a connecting pipe, and is characterized in that the connecting pipe is fixedly mounted at the bottom of the pressure gauge body; the protective shell assembly is mounted on the outer side of the pressure gauge body and used for protecting the pressure gauge body; the heat dissipation assembly is installed on the protective shell assembly and used for conducting heat dissipation on the interior of the protective shell assembly, and the pressure gauge body is made to be at the proper working temperature; the pressure gauge body is protected through a closed cover body structure composed of the first shell, the second shell, the glass plate and the back plate, damage to the pressure gauge body caused by external impact is avoided, the adjustable heat dissipation grooves are formed, heat dissipation is effectively conducted on the interior of the shell, the heat dissipation effect is improved, it is ensured that the pressure gauge is at the proper temperature, and the service life of the pressure gauge is prolonged. And the service life of the pressure gauge is prolonged.

Description

Technical Field

[0001] This invention relates to the field of pressure gauges, specifically a single-needle mechanical temperature-compensated pressure gauge structure. 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. It is widely used and can be found in almost all industrial processes and scientific research fields.

[0003] Existing single-needle mechanical temperature-compensated pressure gauges are ubiquitous in fields such as heating networks, oil and gas transmission, water and gas supply systems, and vehicle repair and maintenance shops. However, when used in high-temperature environments, the high temperature accelerates the aging of the equipment's components, even causing localized deformation and expansion. When the accuracy of the components decreases to a certain extent, it directly affects the final measurement results. Furthermore, in high-pressure measurements, existing pressure gauges lack effective protective structures. When subjected to external impacts, the external glass may shatter, leaving the main internal components without effective protection, easily causing damage and affecting the normal use of the pressure gauge. Therefore, to address the above problems, a new single-needle mechanical temperature-compensated pressure gauge structure is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies and solve the problems of accelerated aging of equipment components, even localized deformation and expansion, caused by high temperatures during use, which directly affects the final measurement results when the precision of components decreases to a certain extent, and the lack of effective protective structures in existing pressure gauges for high-pressure measurements, which can lead to the breakage of the external glass when subjected to external impacts, resulting in insufficient protection for the main internal components and easy damage, thus affecting the normal use of the pressure gauge, this invention proposes a single-needle mechanical temperature-compensated pressure gauge structure.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a single-needle mechanical temperature-compensated pressure gauge structure, comprising a pressure gauge body and a connecting pipe, wherein the connecting pipe is fixedly installed at the bottom of the pressure gauge body;

[0006] The protective housing assembly is installed on the outside of the pressure gauge body to protect the pressure gauge body.

[0007] The heat dissipation component, installed on the protective housing assembly, is used to dissipate heat from the inside of the protective housing assembly, keeping the pressure gauge body at a suitable operating temperature.

[0008] Preferably, the protective shell assembly includes a first shell and a second shell, both of which are cylindrical. The first shell and the second shell are respectively installed on the outside of the pressure gauge body. Mounting plates are fixedly connected to the opposite side walls of the first shell and the second shell, and bolt pairs are installed on the mounting plates. Support blocks are fixedly installed on the inner wall of the second shell, and multiple sets of support blocks are provided. The ends of the support blocks abut against the side walls of the pressure gauge body. A glass plate is fixedly installed at the front end of the first shell, and a back plate is installed at the rear end of the second shell.

[0009] Preferably, the bottoms of the first housing and the second housing are respectively fixedly connected with semi-circular retaining rings, and the retaining rings are adapted to the connecting tube.

[0010] Preferably, the heat dissipation assembly includes a heat dissipation groove, and a sliding cavity is formed inside the heat dissipation groove near the first housing. A filter screen is slidably disposed in the sliding cavity. The side wall of the back plate is attached to the inner wall of the second housing. A protrusion is integrally formed on the side of the back plate. The protrusion is slidably disposed in the heat dissipation groove. The filter screen is fixedly connected to the protrusion. Miniature cylinders are symmetrically fixedly installed on both sides of the back of the mounting plate on the second housing. A connecting plate is fixedly connected to the telescopic end of the miniature cylinder. The connecting plate is fixedly connected to the back plate through a connecting rod.

[0011] Preferably, a temperature sensor and a controller are fixedly connected to the inner wall of the second housing.

[0012] Preferably, the back plate is an aluminum plate.

[0013] Preferably, the heat dissipation groove has sliding grooves on both sides of the side wall, and the two ends of the filter screen are slidably disposed in the sliding grooves.

[0014] Preferably, heat dissipation fins are fixedly connected to the back of the back plate.

[0015] The advantages of this invention are:

[0016] 1. The present invention provides protection for the pressure gauge body by setting up a protective shell assembly. In use, the pressure gauge body is protected by a closed cover structure composed of shell one, shell two, glass plate and back plate, which avoids damage to the pressure gauge body due to external impact.

[0017] 2. This invention facilitates heat dissipation from the interior of the protective shell assembly by incorporating a heat dissipation component, ensuring the pressure gauge body operates at a suitable temperature. During use, a temperature sensor detects the internal temperature of the shell and transmits this information to the controller. The controller's internal chip has a preset threshold. When the temperature exceeds this threshold, the controller activates a micro-cylinder to reciprocate. The micro-cylinder first pushes the connecting plate and connecting rod outwards, subsequently causing the back plate to move outwards along the inner wall of the shell. This increases the area connecting the heat dissipation grooves to the interior of the shell, thus improving heat dissipation. The filter screen moves synchronously with the protrusions, consistently covering the area connecting the heat dissipation grooves to the interior of the shell, ensuring effective filtration. Furthermore, the outward movement of the back plate generates negative pressure inside the shell, drawing outside air from the heat dissipation grooves. The back plate then moves inwards, expelling the air from the heat dissipation grooves. This reciprocating motion of the back plate accelerates heat exchange, further enhancing heat dissipation. When the temperature sensor detects that the internal temperature of the shell is normal, the controller resets the micro-cylinder, returning the back plate to its initial position. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0020] Figure 2 This is a schematic diagram of the back side of Example 1;

[0021] Figure 3 This is a front view of the second casing of Embodiment 1;

[0022] Figure 4 This is a schematic diagram of the internal structure of shell two in Embodiment 1;

[0023] Figure 5 This is a partial structural cross-sectional view of Embodiment 1.

[0024] In the diagram: 1. Pressure gauge body; 2. Protective housing assembly; 21. Housing 1; 22. Housing 2; 23. Mounting plate; 24. Bolt pair; 25. Glass plate; 26. Back plate; 27. Protrusion; 28. Snap ring; 29. ​​Support block; 3. Heat dissipation assembly; 31. Heat dissipation groove; 32. Filter screen; 33. Miniature cylinder; 34. Connecting plate; 35. Connecting rod; 36. Slide cavity; 37. Slide groove; 4. Heat dissipation fins; 5. Temperature sensor; 6. Controller; 7. Connecting pipe. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1

[0027] Please see Figure 1-5 As shown, a single-needle mechanical temperature-compensated pressure gauge structure includes a pressure gauge body 1 and a connecting pipe 7, wherein the connecting pipe 7 is fixedly installed at the bottom of the pressure gauge body 1.

[0028] The protective housing assembly 2 is installed on the outside of the pressure gauge body 1 to protect the pressure gauge body 1.

[0029] The heat dissipation component 3 is installed on the protective shell component 2 and is used to dissipate heat inside the protective shell component 2 so that the pressure gauge body 1 is at a suitable working temperature.

[0030] The protective housing assembly 2 includes a first housing 21 and a second housing 22, both of which are cylindrical. The first housing 21 and the second housing 22 respectively cover the outside of the pressure gauge body 1. Mounting plates 23 are fixedly connected to the opposite sidewalls of the first housing 21 and the second housing 22, and bolt pairs 24 are installed on the mounting plates 23. Support blocks 29 are fixedly installed on the inner wall of the second housing 22. Multiple sets of support blocks 29 are provided, and the ends of the support blocks 29 abut against the sidewalls of the pressure gauge body 1. A glass plate 25 is fixedly installed at the front end of the first housing 21, and a back plate 26 is installed at the rear end of the second housing 22. During operation, the protective housing is installed... When assembling component 2, first insert housing 22 from the rear end of pressure gauge body 1, so that support block 29 abuts against the side of pressure gauge body 1, thereby limiting housing 22. Then, install housing 1 21 at the front end of pressure gauge body 1, so that mounting plate 23 on housing 1 21 and housing 22 fits together. Install bolt pair 24 in the mounting hole on mounting plate 23 and tighten it, thereby fixing housing 1 21 and housing 22 to the outside of pressure gauge body 1. The housing 1 21, housing 22, glass plate 25 and back plate 26 form a closed cover structure to protect pressure gauge body 1 and prevent damage to pressure gauge body 1 due to external impact.

[0031] The bottom of housing 1 21 and housing 22 are respectively fixedly connected with semi-circular retaining rings 28, which are adapted to the connecting pipe 7. During operation, by engaging the retaining rings 28 on housing 1 21 and housing 22 with the connecting pipe 7, housing 1 21 and housing 22 can be limited in the front-back direction, making the installation of housing 1 21 and housing 22 more stable.

[0032] The heat dissipation assembly 3 includes a heat dissipation groove 31. A sliding cavity 36 is formed inside the heat dissipation groove 31 near the end of the housing 21. A filter screen 32 is slidably disposed in the sliding cavity 36. The side wall of the back plate 26 is attached to the inner wall of the housing 22. A protrusion 27 is integrally formed on the side of the back plate 26. The protrusion 27 is slidably disposed in the heat dissipation groove 31. The filter screen 32 is fixedly connected to the protrusion 27. Miniature cylinders 33 are symmetrically fixedly installed on both sides of the back of the mounting plate 23 on the housing 22. A connecting plate 34 is fixedly connected to the telescopic end of the miniature cylinder 33. The connecting plate 34 is fixedly connected to the back plate 26 through a connecting rod 35.

[0033] A temperature sensor 5 and a controller 6 are fixedly connected to the inner wall of the housing 22 respectively;

[0034] During operation, the heat dissipation slots 31 facilitate the dissipation of heat from the inside of the housing, while the filter 32 prevents airborne impurities from entering the housing. The temperature sensor 5 detects the internal temperature of the housing and transmits this information to the controller 6. The controller 6 has a preset threshold in its chip; when the temperature exceeds this threshold, the controller 6 controls the micro-cylinder 33 to reciprocate. The micro-cylinder 33 first pushes the connecting plate 34 and connecting rod 35 outwards, which in turn moves the back plate 26 along the inner wall of the housing 22 outwards. This increases the area of ​​the heat dissipation slots 31 connected to the inside of the housing, thereby improving heat dissipation. The filter screen 32 has a sufficiently large area and moves synchronously with the protrusion 27, ensuring that it always covers the communication position between the heat dissipation groove 31 and the inside of the housing, thus ensuring the filtration effect. In addition, as the back plate 26 moves outward, it can generate negative pressure inside the housing, drawing outside air into the housing from the heat dissipation groove 31. Then, it controls the back plate 26 to move inward, squeezing the air inside the housing out of the heat dissipation groove 31. The reciprocating motion of the back plate 26 can accelerate the heat exchange rate and further improve the heat dissipation effect. When the temperature sensor 5 detects that the internal temperature of the housing is normal, it will control the micro cylinder 33 to reset through the controller 6, so that the back plate 26 returns to its initial position.

[0035] The back plate 26 is made of aluminum; during operation, it facilitates increased heat dissipation of the back plate 26.

[0036] The heat dissipation groove 31 has sliding grooves 37 on both sides of its sidewalls, and the two ends of the filter screen 32 are slidably disposed in the sliding grooves 37. During operation, the filter screen 32 can completely cover the heat dissipation groove 31 to prevent impurity particles from entering the housing from the heat dissipation groove 31.

[0037] Example 2

[0038] Please see Figure 2 As shown in the first embodiment, as another implementation of the present invention, the back plate 26 is fixedly connected to the back side of the back plate 26; during operation, the heat dissipation effect of the back plate 26 is further improved by setting the heat dissipation fins 4.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A single-needle mechanical temperature-compensated pressure gauge structure, characterized in that: It includes a pressure gauge body (1) and a connecting pipe, wherein the connecting pipe is fixedly installed at the bottom of the pressure gauge body (1); The protective housing assembly (2) is installed on the outside of the pressure gauge body (1) to protect the pressure gauge body (1); The heat dissipation component (3) is installed on the protective shell assembly (2) to dissipate heat inside the protective shell assembly (2) so that the pressure gauge body (1) is at a suitable working temperature.

2. The structure of a single-needle mechanical temperature-compensated pressure gauge according to claim 1, characterized in that: The protective shell assembly (2) includes a first shell (21) and a second shell (22). Both the first shell (21) and the second shell (22) are cylindrical. The first shell (21) and the second shell (22) are respectively covered on the outside of the pressure gauge body (1). Mounting plates (23) are fixedly connected to the opposite side walls of the first shell (21) and the second shell (22). Bolt pairs (24) are installed on the mounting plates (23). Support blocks (29) are fixedly installed on the inner wall of the second shell (22). Multiple sets of support blocks (29) are provided. The ends of the support blocks (29) abut against the side walls of the pressure gauge body (1). A glass plate (25) is fixedly installed at the front end of the first shell (21). A back plate (26) is installed at the rear end of the second shell (22).

3. The structure of a single-needle mechanical temperature-compensated pressure gauge according to claim 2, characterized in that: The bottom of the first housing (21) and the second housing (22) are respectively fixedly connected with semi-circular retaining rings, which are adapted to the connecting pipe.

4. The structure of a single-needle mechanical temperature-compensated pressure gauge according to claim 3, characterized in that: The heat dissipation assembly (3) includes a heat dissipation groove (31). A sliding cavity is provided inside the heat dissipation groove (31) near the first housing (21). A filter screen (32) is slidably disposed in the sliding cavity. The side wall of the back plate (26) is attached to the inner wall of the second housing (22). A protrusion (27) is integrally formed on the side of the back plate (26). The protrusion (27) is slidably disposed in the heat dissipation groove (31). The filter screen (32) is fixedly connected to the protrusion (27). Miniature cylinders (33) are symmetrically fixedly installed on both sides of the back of the mounting plate (23) on the second housing (22). A connecting plate (34) is fixedly connected to the telescopic end of the miniature cylinder (33). The connecting plate (34) is fixedly connected to the back plate (26) through a connecting rod (35).

5. The structure of a single-needle mechanical temperature-compensated pressure gauge according to claim 4, characterized in that: A temperature sensor (5) and a controller (6) are fixedly connected to the inner wall of the housing 2 (22).

6. The structure of a single-needle mechanical temperature-compensated pressure gauge according to claim 5, characterized in that: The back plate (26) is an aluminum plate.

7. The structure of a single-needle mechanical temperature-compensated pressure gauge according to claim 6, characterized in that: The heat dissipation groove (31) has sliding grooves (36) on both sides of its sidewalls, and the two ends of the filter screen (32) are slidably disposed in the sliding grooves (36).

8. The structure of a single-needle mechanical temperature-compensated pressure gauge according to claim 7, characterized in that: Heat dissipation fins (4) are fixedly connected to the back of the back plate (26).

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