A temperature and pressure coaxial water level gauge

Abstract

The present invention discloses a temperature and pressure coaxial water altimeter, comprising a temperature detection assembly and a pressure detection assembly. The pressure detection assembly comprises a movement, the movement comprising a core shaft constituting a pressure pointer shaft, and the temperature detection assembly comprises a temperature pointer shaft, wherein the temperature pointer shaft and the core shaft of the pressure detection assembly are coaxial. The present invention has the beneficial effect of expanding the dial scale range from 180 degrees to 270 degrees by coaxially arranging the temperature pointer shaft of the temperature detection assembly and the core shaft of the pressure detection assembly so that the two pointers are coaxial, thereby improving the temperature reading accuracy and the pressure reading accuracy by 1.5 times, thereby enhancing measurement accuracy.

Description

Technical Field

[0001] The invention belongs to the technology of instruments, in particular to a temperature and pressure coaxial water altimeter. Background Art

[0002] A water level gauge is an instrument that measures both temperature and pressure. It features a bimetallic temperature sensor for temperature measurement and a Bourdon tube and pressure gauge for pressure measurement. It combines a bimetallic thermometer with a pressure gauge. It can simultaneously monitor the temperature and pressure of various liquids and gases at production sites.

[0003] The temperature pointer and pressure pointer of the existing water level gauge are connected to two axes with a certain distance respectively. Figure 5 As shown, the dial scales of each display object are set separately, resulting in a dial scale range of only 180° at most, dense scale lines, and low reading accuracy. Summary of the Invention

[0004] The purpose of the present invention is to provide a temperature and pressure coaxial water level gauge to improve the reading accuracy of the water level gauge.

[0005] To achieve this purpose, the present invention adopts the following technical solutions.

[0006] A temperature and pressure coaxial water level gauge comprises a temperature detection component and a pressure detection component. The pressure detection component comprises a movement, which comprises a core shaft constituting a pressure pointer shaft. The temperature detection component comprises a temperature pointer shaft, which is coaxial with the core shaft of the pressure detection component.

[0007] The present invention adopts the above-mentioned technical solution. By setting the temperature pointer axis of the temperature detection component and the core axis of the pressure detection component coaxially, the rotation centers of the two pointers are made concentric, and the scale range of the dial can be expanded from the original 180 degrees to 270 degrees, so that the temperature reading accuracy and the pressure reading accuracy can be improved by 1.5 times, thereby improving the measurement accuracy.

[0008] Preferably, a through hole is formed on the core shaft, the through hole extends along the axis of the core shaft, and the temperature pointer shaft is inserted into the through hole.

[0009] By forming a through hole along the axis of the core shaft, the temperature pointer shaft can pass through the through hole, making the pointer shaft coaxial with the core shaft, and making the rotation centers of the temperature pointer and the pressure pointer concentric, the scale range of the dial is expanded from the original 180 degrees to 270 degrees, and the temperature reading accuracy and pressure reading accuracy can be improved by 1.5 times.

[0010] Preferably, the temperature detection assembly includes a temperature sensing element, a rotating shaft, an angle spring and a temperature pointer, one end of the rotating shaft is fixedly connected to the free end of the temperature sensing element, and the other end is fixedly connected to one end of the angle spring, the other end of the angle spring is connected to the temperature pointer shaft, and the temperature pointer is fixedly connected to the free end of the temperature pointer shaft.

[0011] In this way, the temperature pointer can rotate synchronously with the pointer shaft. When the free end of the sensing element is deformed, the rotation of the shaft drives the rotation of the shaft, so that the pointer fixed on the pointer shaft rotates synchronously to display the current temperature value.

[0012] Preferably, the pressure detection assembly also includes a joint, a Bourdon tube and a pressure pointer, the mounting portion of the Bourdon tube is sealedly connected to the joint, the free end of the Bourdon tube is connected to the movement, the core shaft constitutes the pressure pointer shaft, and the pressure pointer is fixedly connected to the free end of the core shaft.

[0013] In this way, when the Bourdon tube is deformed under the action of the pressure medium, the elastic force is transmitted to the movement connected to it. Under the action of the transmission mechanism of the movement, the core shaft of the movement rotates, driving the pressure pointer connected to the core shaft to rotate, displaying the current pressure value.

[0014] Preferably, a thermometer mounting hole is formed on the joint, and the thermometer mounting hole extends along the axis of the joint. A Bourdon tube mounting hole is formed on one side of the joint, and the Bourdon tube mounting hole is communicated with the thermometer mounting hole.

[0015] By forming a thermometer mounting hole on the joint and arranging the thermometer mounting hole along the axis of the joint, instead of the original eccentrically arranged thermometer mounting hole, the outer dimensions of the joint are reduced, and materials are saved. The Bourdon tube mounting hole and the thermometer mounting hole are communicated, so that the thermometer mounting hole becomes the air inlet hole of the Bourdon tube, the number of openings is reduced, and the production difficulty is reduced.

[0016] Preferably, the temperature detection assembly also includes a protective tube, the rotating shaft and the temperature sensing element are both located inside the protective tube, the protective tube is passed through the thermometer mounting hole of the joint, a sealing plug is welded on the protective tube, and the sealing plug is also welded to the end of the joint to seal the protective tube and the joint.

[0017] A protective tube is set to protect the temperature measurement component from being contaminated by the medium to ensure measurement accuracy. The protective tube is passed through the thermometer mounting hole of the joint, and the gap between the thermometer mounting hole and the protective tube is sealed by end face welding to avoid air leakage in the air inlet channel of the Bourdon tube and ensure the accuracy of the measured pressure value.

[0018] Preferably, a dial is fixedly connected to one side of the joint, and a through hole is formed on the dial for the temperature pointer shaft and the core shaft to pass through, so that the pressure pointer installed at the free end of the core shaft and the temperature pointer installed at the free end of the temperature pointer shaft are both located outside the dial.

[0019] Fix the dial to avoid shaking during use, and set through holes on the dial for the free ends of the core shaft and the temperature pointer shaft to pass through, so that the pressure pointer and thermometer are located on the outside of the dial, and the temperature and pressure values ​​are displayed in conjunction with the dial scale.

[0020] Preferably, the temperature pointer shaft and the core shaft are concentric with the dial.

[0021] The accuracy of the reading is ensured by arranging the temperature pointer shaft and the core shaft concentrically with the dial.

[0022] Preferably, the top of the joint is connected to a shell, and the dial, pressure pointer and temperature pointer are all located in the shell.

[0023] The beneficial effects of the present invention are as follows: by forming a through-hole along the axis of the core shaft of the pressure measuring assembly, through which the temperature pointer shaft can pass, the temperature pointer shaft is made coaxial with the core shaft, i.e., the rotation centers of the temperature pointer and the pressure pointer are concentric, thereby expanding the scale range of the dial from the original 180 degrees to 270 degrees, and improving the accuracy of both temperature and pressure readings by 1.5 times. Furthermore, by forming a thermometer mounting hole in the joint and locating the thermometer mounting hole along the axis of the joint, replacing the original eccentrically positioned thermometer mounting hole, the joint's overall dimensions are reduced, saving material. Furthermore, by aligning the Bourdon tube mounting hole with the thermometer mounting hole, the thermometer mounting hole serves as the Bourdon tube's air inlet, reducing the number of openings and simplifying production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of the present invention;

[0025] Figure 2 It is a partial structural diagram of the present invention;

[0026] Figure 3 This is a rear view of the present invention with the case removed;

[0027] Figure 4 It is a structural diagram of the movement of the present invention;

[0028] Figure 5 It is a prior art structural diagram of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings, but the present invention is not limited to the scope of the embodiments described.

[0030] The accompanying drawings in the specification of the present invention include: case 1, Bourdon tube 2, joint 21, Bourdon tube mounting hole 212, thermometer mounting hole 211, temperature pointer 3, pressure pointer 4, temperature pointer shaft 5, protective tube 51, sealing plug 52, angle spring 6, dial 7, rotating shaft 8, temperature sensing element 9, movement 10, and core shaft 11.

[0031] See also Figure 1 and Figure 2 A temperature and pressure coaxial water level gauge includes a temperature detection component and a pressure detection component. The pressure detection component includes a movement 10, and the movement 10 includes a core shaft 11 constituting a pressure pointer shaft. The temperature detection component includes a temperature pointer shaft 5, and the temperature pointer shaft 5 is coaxial with the core shaft 11 of the pressure detection component.

[0032] See also Figure 1 and Figure 4 A through hole is formed on the core shaft 11, and the through hole extends along the axis of the core shaft 11. The temperature pointer shaft 5 is inserted into the through hole.

[0033] See also Figure 1 , wherein the temperature detection component includes a temperature sensing element 9, a rotating shaft 8, an angle spring 6 and a temperature pointer 3, one end of the rotating shaft 8 is fixedly connected to the free end of the temperature sensing element 9, and the other end is fixedly connected to one end of the angle spring 6, the other end of the angle spring 6 is fixedly connected to the temperature pointer shaft 5, and the temperature pointer 3 is fixedly connected to the free end of the temperature pointer shaft 5.

[0034] See also Figure 1 and Figure 3 The pressure detection assembly also includes a joint 21, a Bourdon tube 2 and a pressure pointer 4. The mounting portion of the Bourdon tube 2 is sealed with the joint 21. The free end of the Bourdon tube 2 is connected to the movement 10. The core shaft 11 constitutes a pressure pointer shaft. The pressure pointer 4 is fixedly connected to the free end of the core shaft 11.

[0035] See also Figure 3 A thermometer mounting hole 211 is formed on the joint 21 , and the thermometer mounting hole 211 extends along the axis of the joint 21 . A Bourdon tube mounting hole 212 is formed on one side of the joint 21 , and the Bourdon tube mounting hole 212 communicates with the thermometer mounting hole 211 .

[0036] See also Figure 1 The temperature detection assembly also includes a protective tube 51, the rotating shaft 8 and the temperature sensing element 9 are both located in the protective tube 51, the protective tube 51 is passed through the thermometer mounting hole 211 of the joint 21, and a sealing plug 52 is welded on the protective tube 51. The sealing plug 52 is also welded to the end of the joint 21, so that the protective tube 51 is sealed and connected to the joint 21.

[0037] See also Figure 3 A dial 7 is fixedly connected to one side of the joint 21, and a through hole is formed on the dial 7 for the temperature pointer shaft 5 and the core shaft 11 to pass through, so that the pressure pointer 4 installed at the free end of the core shaft 11 and the temperature pointer 3 installed at the free end of the temperature pointer shaft 5 are both located on the outside of the dial 7.

[0038] See also Figure 1 The temperature pointer shaft 5 and the core shaft 11 are concentric with the dial 7. The top of the joint 21 is connected to a housing, and the dial 7, the pressure pointer 4 and the temperature pointer 3 are all located in the housing.

[0039] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature and pressure coaxial water level gauge, characterized in that: The invention comprises a temperature detection component and a pressure detection component, wherein the pressure detection component comprises a movement (10), the movement (10) comprises a core shaft (11) constituting a pressure pointer shaft, the temperature detection component comprises a temperature pointer shaft (5), and the temperature pointer shaft (5) is coaxial with the core shaft (11) of the pressure detection component; the pressure detection component further comprises a joint (21), a Bourdon tube (2) and a pressure pointer (4), the mounting portion of the Bourdon tube (2) is sealedly connected to the joint (21), the free end of the Bourdon tube (2) is connected to the movement (10), and the pressure pointer (4) is fixedly connected to the free end of the core shaft (11); a thermometer mounting hole (211) is formed on the joint (21), the thermometer mounting hole (211) extends along the axis of the joint (21), a Bourdon tube mounting hole (212) is formed on one side of the joint (21), and the Bourdon tube mounting hole (212) is communicated with the thermometer mounting hole (211).

2. The temperature and pressure coaxial water level gauge according to claim 1, characterized in that: A through hole is formed on the core shaft (11), the through hole extending along the axis of the core shaft (11), and the temperature pointer shaft (5) is inserted into the through hole.

3. The temperature and pressure coaxial water level gauge according to claim 1 or 2, characterized in that: The temperature detection assembly further comprises a temperature sensing element (9), a rotating shaft (8), an angle spring (6) and a temperature pointer (3); one end of the rotating shaft (8) is fixedly connected to the free end of the temperature sensing element (9), and the other end is fixedly connected to one end of the angle spring (6); the other end of the angle spring (6) is fixedly connected to the temperature pointer shaft (5); the temperature pointer (3) is fixedly connected to the free end of the temperature pointer shaft (5); and a dial (7) is fixedly connected to one side of the joint (21).

4. The temperature and pressure coaxial water level gauge according to claim 3, characterized in that: The temperature detection assembly further comprises a protective tube (51), the rotating shaft (8) and the temperature sensing element (9) are both located in the protective tube (51), the protective tube (51) is inserted into the thermometer mounting hole (211) of the joint (21), a sealing plug (52) is welded on the protective tube (51), and the sealing plug (52) is also welded to the end of the joint (21), so that the protective tube (51) and the joint (21) are sealed.

5. The temperature and pressure coaxial water level gauge according to claim 3, characterized in that: The dial (7) is formed with a through hole for the temperature pointer shaft (5) and the core shaft (11) to pass through, so that the pressure pointer (4) installed at the free end of the core shaft (11) and the temperature pointer (3) installed at the free end of the temperature pointer shaft (5) are both located outside the dial (7).

6. The temperature and pressure coaxial water level gauge according to claim 5, characterized in that: The temperature pointer shaft (5) and the core shaft (11) are concentric with the dial (7).

7. The temperature and pressure coaxial water level gauge according to claim 5, characterized in that: The top of the joint (21) is connected to a housing, and the dial (7), the pressure pointer (4) and the temperature pointer (3) are all located in the housing.

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