Cold-resistant and heat-resistant dual-function pressure gauge

Abstract

The utility model discloses a cold-resistant and heat-resistant dual-function pressure gauge, which relates to the technical field of cold-resistant and heat-resistant dual-function pressure gauges and comprises a pressure gauge protective casing, when the pressure gauge is used, a liquid guide pipe jacket can be rotated firstly and then taken down from a liquid guide pipe, and then heat insulation materials such as glass foam coating are placed into a heat insulation material filling cavity through the liquid guide pipe. The glass foam coating is a low-density coating material and can form an efficient heat isolation layer, so that heat transfer can be effectively reduced, a heat insulation effect can be achieved on the pressure gauge protection shell, and the heat resistance of the pressure gauge protection shell can be improved; and then the liquid guide pipe outer sleeve is reset, then the telescopic inner rod clamping block is pressed, then the telescopic inner rod is moved towards one side of the telescopic outer rod till the telescopic inner rod completely moves into the telescopic outer rod, and then the cold-proof material filling cavity cover plate is taken down.

Description

Technical Field

[0001] The utility model relates to the technical field of cold-resistant and heat-resistant dual-function pressure gauges, in particular to a cold-resistant and heat-resistant dual-function pressure gauge. Background Art

[0002] A pressure gauge is an instrument that measures and indicates pressure higher than the ambient pressure. It mainly uses elastic elements as sensitive elements and is widely used in various industrial processes and scientific research fields. The structure of a pressure gauge usually includes a dial, a core, a base and a measuring system. The working principle is based on the deformation and displacement of the elastic element. The pressure signal is converted into a readable numerical value indicated on the dial through a transmission amplification mechanism. However, some existing pressure gauges do not have cold resistance and heat resistance, which not only reduces the scope of use of the pressure gauge, but also reduces its practicality. Therefore, those skilled in the art provide a cold-resistant and heat-resistant dual-function pressure gauge to solve the problems raised in the above background technology. Utility Model Content

[0003] The utility model aims to provide a cold-resistant and heat-resistant dual-function pressure gauge to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A cold-resistant and heat-resistant dual-function pressure gauge comprises a pressure gauge protective shell; a heat-insulating material-filled cavity is arranged on the outer side of the middle of the inner part of the pressure gauge protective shell, and a cold-proof material-filled cavity is arranged on the outer side of the heat-insulating material-filled cavity; a liquid drainage tube is arranged in the middle of the upper side of the heat-insulating material-filled cavity, a liquid drainage tube jacket is threadedly connected to the upper side of the outer side of the liquid drainage tube, and a sealing ring is arranged on the upper side of the inner part of the liquid drainage tube jacket; a protective cavity is arranged on the outer side of the cold-proof material-filled cavity, and a plurality of supporting inner rods are arranged inside the protective cavity; a dial is arranged in the middle of the inner part of the pressure gauge protective shell, and dial scale lines are arranged on the outer side of the middle of the front surface of the dial; the front side of the dial A pointer rotating shaft is provided in the middle, a pointer is provided on the outside of the pointer rotating shaft, and a dial protection cover is provided on the front side of the pointer; a cavity cover plate filled with cold-proof material is provided in the middle of the rear surface of the pressure gauge protective shell, and the front four ends of the cavity cover plate filled with cold-proof material are provided with cavity cover plate limit blocks filled with cold-proof material; a retractable inner rod is provided at the four ends of the rear side of the cavity cover plate filled with cold-proof material, and a retractable inner rod clamping block is provided in the middle of the rear side of the retractable inner rod; a retractable outer rod is provided on the right side of the retractable inner rod, and a retractable outer rod clamping groove is provided in the middle of the rear surface of the retractable outer rod; a pressure gauge connecting piece is provided in the middle of the lower side of the pressure gauge protective shell.

[0006] Preferably, a retractable inner rod is provided at the four ends of the rear side of the cold-proof material-filled cavity cover plate, and a retractable inner rod clamping block is provided in the middle of the rear side of the retractable inner rod; a retractable outer rod is provided on the right side of the retractable inner rod, and a retractable outer rod clamping groove is provided in the middle of the rear surface of the retractable outer rod; a pressure gauge connecting piece is provided in the middle of the lower side of the pressure gauge protective shell.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] 1. First, the outer jacket of the drainage tube can be rotated, and then it can be removed from the drainage tube. Then, the heat-insulating material such as glass foam coating can be placed into the heat-insulating material filling cavity through the drainage tube. Glass foam coating is a low-density coating material, which can form an efficient thermal isolation layer, thereby effectively reducing heat transfer, and then having a heat-insulating effect on the protective outer shell of the pressure gauge, thereby improving the heat resistance of the protective outer shell of the pressure gauge. After the internal filling of the heat-insulating material filling cavity is completed, the outer jacket of the drainage tube can be reset, and then the retractable inner rod block can be pressed, and then the retractable inner rod can be moved to one side of the retractable outer rod until the retractable inner rod is completely moved to the inside of the retractable outer rod. Then, the cover plate of the cold-proof material filling cavity can be removed, and then the cold-proof material such as polyethylene can be poured into the interior of the cold-proof material filling cavity. Polyethylene can be used for a long time under low temperature conditions, and its It has good low-temperature toughness and cold resistance, and can be used for a long time in a very low temperature environment, so that it can have a good cold-resistant effect on the pressure gauge protective shell, thereby improving the cold resistance of the pressure gauge protective shell. After the internal filling of the cold-proof material filling cavity is completed, the cover of the cold-proof material filling cavity is reset, and then the pressure gauge protective shell can be used in higher temperature and lower temperature environments. When it is necessary to replace the materials inside the heat-insulating material filling cavity and the cold-proof material filling cavity, it is only necessary to repeat the above operation at this time; the device can make the pressure gauge protective shell be used in higher temperature and lower temperature environments by placing the heat-insulating material and the cold-proof material into the heat-insulating material filling cavity and the cold-proof material filling cavity respectively, thereby improving the heat resistance and cold resistance of the pressure gauge protective shell, and then improving the practicality of the device.

[0009] 2. The device can provide good protection for the protective shell of the pressure gauge through the protective cavity, thereby increasing the service life of the protective shell of the pressure gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a plan schematic diagram of a cold-resistant and heat-resistant dual-function pressure gauge.

[0011] Figure 2 It is a schematic diagram of the internal plane of a cold-resistant and heat-resistant dual-function pressure gauge.

[0012] Figure 3 The figure is a rear view of a cold-resistant and heat-resistant dual-function pressure gauge.

[0013] Figure 4 It is a side view of a cold-resistant and heat-resistant dual-function pressure gauge.

[0014] In the figure: 1-pressure gauge protective shell, 2-insulating material filled cavity, 3-cold-proof material filled cavity, 4-liquid introduction tube, 5-liquid introduction tube jacket, 6-sealing ring, 7-protective cavity, 8-support inner rod, 9-dial, 10-dial scale line, 11-pointer rotation shaft, 12-pointer, 13-dial protective cover, 14-cold-proof material filled cavity cover plate, 15-cold-proof material filled cavity cover plate limit block, 16-retractable inner rod, 17-retractable inner rod clamping block, 18-retractable outer rod, 19-retractable outer rod clamping slot, 20-pressure gauge connector. DETAILED DESCRIPTION

[0015] See also Figures 1 to 4 In the embodiment of the utility model, a cold-resistant and heat-resistant dual-function pressure gauge comprises a pressure gauge protective shell 1; a heat-insulating material-filled cavity 2 is arranged on the outer side of the inner middle of the pressure gauge protective shell 1, and a cold-proof material-filled cavity 3 is arranged on the outer side of the heat-insulating material-filled cavity 2; a liquid drainage tube 4 is arranged in the middle of the upper side of the heat-insulating material-filled cavity 2, and a liquid drainage tube jacket 5 is threadedly connected to the upper side of the outer side of the liquid drainage tube 4, and a sealing ring 6 is arranged on the inner upper side of the liquid drainage tube jacket 5; a protective cavity 7 is arranged on the outer side of the cold-proof material-filled cavity 3, and a plurality of supporting inner rods 8 are arranged inside the protective cavity 7; a dial 9 is arranged in the middle of the inner middle of the pressure gauge protective shell 1, and a dial scale line 10 is arranged on the outer side of the middle of the front surface of the dial 9; the middle of the front side of the dial 9 A pointer rotating shaft 11 is provided, a pointer 12 is provided on the outer side of the pointer rotating shaft 11, and a dial protection cover 13 is provided on the front side of the pointer 12; a cold-proof material-filled cavity cover 14 is provided in the middle of the rear surface of the pressure gauge protective shell 1, and cold-proof material-filled cavity cover limit blocks 15 are provided at the four front ends of the cold-proof material-filled cavity cover 14; a retractable inner rod 16 is provided at the four rear ends of the cold-proof material-filled cavity cover 14, and a retractable inner rod clamping block 17 is provided in the middle of the rear side of the retractable inner rod 16; a retractable outer rod 18 is provided on the right side of the retractable inner rod 16, and a retractable outer rod clamping groove 19 is provided in the middle of the rear surface of the retractable outer rod 18; a pressure gauge connecting piece 20 is provided in the middle of the lower side of the pressure gauge protective shell 1.

[0016] The working principle of the utility model is: when in use, firstly, the drainage tube jacket 5 can be rotated, and then it can be removed from the drainage tube 4, and then the heat insulation material such as glass foam coating can be put into the heat insulation material filling cavity 2 through the drainage tube 4. The glass foam coating is a low-density coating material, which can form an efficient thermal isolation layer, thereby effectively reducing heat transfer, and then can have a heat insulation effect on the pressure gauge protective shell 1, thereby improving the heat resistance of the pressure gauge protective shell 1. After the internal filling of the heat insulation material filling cavity 2 is completed, the drainage tube jacket 5 is reset, and then the retractable inner rod block 17 is pressed, and then the retractable inner rod 16 is moved to one side of the retractable outer rod 18 until the retractable inner rod 16 is completely moved to the inside of the retractable outer rod 18, and then the cold-proof material filling cavity cover 14 is removed, and then the cold-proof material such as polyethylene is poured into the interior of the cold-proof material filling cavity 3. Polyethylene can be used for a long time under low temperature conditions, and it has good low-temperature toughness and cold resistance. It can be used for a long time in an environment with very low temperature, so that it can have a good cold-resistant effect on the pressure gauge protective shell 1, thereby improving the cold resistance of the pressure gauge protective shell 1. After the internal filling of the cold-proof material filling cavity 3 is completed, the cold-proof material filling cavity cover 14 is reset, and then the pressure gauge protective shell 1 can be used in higher temperature and lower temperature environments. When it is necessary to replace the materials inside the heat-insulating material filling cavity 2 and the cold-proof material filling cavity 3, it is only necessary to repeat the above operation; the device can make the pressure gauge protective shell 1 usable in higher temperature and lower temperature environments by placing the heat-insulating material and the cold-proof material into the heat-insulating material filling cavity 2 and the cold-proof material filling cavity 3 respectively, thereby improving the heat resistance and cold resistance of the pressure gauge protective shell 1, and further improving the practicality of the device; the device can play a good protective role on the pressure gauge protective shell 1 through the protective cavity 7 provided, thereby improving the service life of the pressure gauge protective shell 1.

[0017] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cold-resistant and heat-resistant dual-function pressure gauge, comprising a pressure gauge protective housing (1), a heat-insulating material-filled cavity (2) and a cold-proof material-filled cavity (3), characterized in that: A heat insulating material-filled cavity (2) is provided on the outer side of the middle of the interior of the pressure gauge protective housing (1), and a cold-proof material-filled cavity (3) is provided on the outer side of the heat insulating material-filled cavity (2); a liquid drainage tube (4) is provided on the middle of the upper side of the heat insulating material-filled cavity (2), a liquid drainage tube jacket (5) is threadedly connected to the upper side of the outer side of the liquid drainage tube (4), and a sealing ring (6) is provided on the upper side of the interior of the liquid drainage tube jacket (5).

2. A cold-resistant and heat-resistant dual-function pressure gauge according to claim 1, characterized in that: A protective cavity (7) is provided outside the cold-proof material-filled cavity (3), and a plurality of supporting inner rods (8) are provided inside the protective cavity (7).

3. The cold-resistant and heat-resistant dual-function pressure gauge according to claim 1 is characterized in that: A dial (9) is provided in the middle of the interior of the pressure gauge protective housing (1), and dial scale lines (10) are provided on the outer middle of the front surface of the dial (9).

4. A cold-resistant and heat-resistant dual-function pressure gauge according to claim 3, characterized in that: A pointer rotating shaft (11) is provided in the middle of the front side of the dial (9), a pointer (12) is provided outside the pointer rotating shaft (11), and a dial protection cover (13) is provided in front of the pointer (12).

5. The cold-resistant and heat-resistant dual-function pressure gauge according to claim 1 is characterized in that: A cold-proof material-filled cavity cover plate (14) is provided in the middle of the rear surface of the pressure gauge protective housing (1), and cold-proof material-filled cavity cover plate limit blocks (15) are provided at the four front ends of the cold-proof material-filled cavity cover plate (14).

6. A cold-resistant and heat-resistant dual-function pressure gauge according to claim 5, characterized in that: The four ends of the rear side of the cold-proof material-filled cavity cover plate (14) are provided with telescopic inner rods (16), and a telescopic inner rod clamping block (17) is provided in the middle of the rear side of the telescopic inner rod (16).

7. A cold-resistant and heat-resistant dual-function pressure gauge according to claim 6, characterized in that: A telescopic outer rod (18) is provided on the right side of the telescopic inner rod (16), and a telescopic outer rod clamping groove (19) is provided in the middle of the rear surface of the telescopic outer rod (18).

8. The cold-resistant and heat-resistant dual-function pressure gauge according to claim 1, characterized in that: A pressure gauge connecting piece (20) is provided in the middle of the lower side of the pressure gauge protection housing (1).

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