A pressure type thermometer

Abstract

The utility model discloses a pressure type temperature gauge, including watch case and watch cover, be equipped with glass between watch case and watch cover, be equipped with spring tube in watch case, spring tube is connected in capillary, and watch case lower part is equipped with fixed hole, and fixed hole is used for supplying capillary to pass through, and fixed hole department is equipped with sealing structure, and capillary passes through sealing structure and is close to sealing structure, down the fixed hole department is equipped with the connecting portion, and the connecting portion is used for connecting metal hose, and capillary is placed in metal hose, and capillary other end is connected in temperature bag. The utility model discloses through adding sealing structure at fixed hole department, is used for preventing glycerol medium in watch case to leak, thereby has improved the vibration resistance, and then under the work of vibration, has prolonged its service life when working.

Description

Technical Field

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

[0002] A pressure thermometer measures temperature based on the relationship between the saturated vapor pressure and temperature of an evaporating liquid within a closed temperature measurement system. Its structure typically includes components such as a temperature bulb, capillary tube, and Bourdon tube. However, when operating under vibration, the internal mechanical structure of the pressure thermometer is affected by vibration, leading to measurement errors. To reduce these errors, glycerol is generally added as a medium. However, the addition of glycerol carries the risk of leakage if the seal at the point where it passes through the capillary tube from the bottom of the casing is not tight. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a pressure-type temperature gauge with good sealing performance to ensure good shock resistance.

[0004] To achieve the above objectives, this utility model provides a pressure-type temperature gauge, which adopts the following technical solution:

[0005] A pressure thermometer includes a housing and a cover, with glass between the housing and the cover. A Bourdon tube is installed inside the housing and connected to a capillary tube. A fixing hole is provided at the bottom of the housing for the capillary tube to pass through. A sealing structure is provided at the fixing hole, through which the capillary tube passes and abuts against the sealing structure. A connecting part is provided downward at the fixing hole for connecting to a metal flexible tube. The capillary tube is placed inside the metal flexible tube, and the other end of the capillary tube is connected to a temperature bulb.

[0006] A further improvement of this utility model of a pressure thermometer is that the sealing structure includes a sealing element, the sealing element includes a vertical section, the outer side of the vertical section is provided with threads, which are threadedly connected to the connecting part, the center of the vertical section is provided with a vertical through notch, a sealing gasket is provided at the through notch, and the capillary tube passes through the sealing gasket.

[0007] A further improvement of this utility model of a pressure-type temperature gauge is that the sealing gasket can be provided with two sets.

[0008] A further improvement of this utility model of a pressure thermometer is that a horizontal section is provided on the outer side of the upper end of the vertical section, and a sealing gasket is provided at the lower end of the horizontal section.

[0009] A further improvement of this utility model of a pressure thermometer is that a connecting section is provided at the upper end of the metal flexible tube, the connecting section is screwed to the connecting part, and a second sealing gasket is provided on the inner side of the connecting section.

[0010] A further improvement of this utility model of a pressure thermometer is that a second sealing gasket is provided in the connecting part, the second sealing gasket is placed between the sealing structure and the connecting section, and the capillary tube passes through and presses against the second sealing gasket.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention improves vibration resistance by adding a sealing structure at the fixing hole to prevent leakage of glycerin medium inside the watch case, thereby extending its service life when working under vibration. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0016] In the diagram: 1. Case, 2. Cover, 3. Glass, 4. Bourdon tube, 5. Capillary tube, 6. Connector, 7. Vertical section, 8. Horizontal section, 9. Sealing gasket, 10. Second sealing gasket, 11. Metal hose, 12. Temperature bulb. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, a pressure thermometer includes a housing 1 and a cover 2. A glass 3 is provided between the housing and the cover. A Bourdon tube 4 is provided inside the housing, and the Bourdon tube is connected to a capillary tube 5. A gasket for sealing is also provided between the housing, cover, and glass. The above structure is the structure of an existing pressure thermometer. Further, a fixing hole is provided at the lower part of the housing for the capillary tube to pass through. A sealing structure is provided at the fixing hole, through which the capillary tube passes and abuts against the sealing structure. A connecting part 6 is provided downward at the fixing hole. The connecting part and the housing can be integrally formed. The connecting part is a hollow cylinder with internal threads. The connecting part is used to connect a metal flexible tube 11. The capillary tube is placed inside the metal flexible tube, and the other end of the capillary tube is connected to a temperature bulb 12.

[0022] Furthermore, the sealing structure includes a sealing element, which includes a vertical section 7. The outer side of the vertical section is threaded and threadedly connected to the connecting part. A vertical through-hole is provided at the center of the vertical section, and a sealing gasket 9 is provided at the through-hole. The capillary tube passes through the sealing gasket. Preferably, two sets of sealing gaskets can be provided.

[0023] A horizontal section extends outward from the upper outer side of the vertical section, and a sealing gasket is located at the lower end of the horizontal section. Due to the arc shape of the watch case, there is a gap between the horizontal section and the watch case, which is further sealed by the sealing gasket to prevent glycerin from leaking into the connection between the vertical section and the connecting part.

[0024] The upper end of the flexible metal hose is provided with a connecting section, which is screwed onto the connecting part. A second sealing gasket 10 is provided on the inner side of the connecting section. A second sealing gasket is provided inside the connecting part, and the second sealing gasket is placed between the sealing structure and the connecting section. The capillary tube passes through and presses against the second sealing gasket. The second sealing gasket further isolates the sealing structure from the connecting section, thereby improving the sealing performance.

[0025] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pressure-type thermometer characterized by comprising: The watch includes a case and a cover, with glass between them. A Bourdon tube is installed inside the case and connected to a capillary tube. A fixing hole is provided at the bottom of the case for the capillary tube to pass through. A sealing structure is provided at the fixing hole, through which the capillary tube passes and abuts against the sealing structure. A connecting part is provided downward at the fixing hole for connecting to a metal flexible tube. The capillary tube is placed inside the metal flexible tube, and the other end of the capillary tube is connected to a temperature bulb.

2. The pressure-type temperature gauge according to claim 1, characterized in that, The sealing structure includes a sealing element, which includes a vertical section. The outer side of the vertical section is threaded and threaded to the connecting part. A vertical through-hole is provided at the center of the vertical section, and a sealing gasket is provided at the through-hole. The capillary tube passes through the sealing gasket.

3. A pressure-type temperature gauge according to claim 2, characterized in that, The sealing gaskets can be provided in two sets.

4. A pressure-type temperature gauge according to claim 3, characterized in that, The vertical section has a horizontal section extending outward from the upper outer side, and a sealing gasket is provided at the lower end of the horizontal section.

5. A pressure-type temperature gauge according to claim 4, characterized in that, The upper end of the metal hose is provided with a connecting section, which is screwed to the connecting part, and a second sealing gasket is provided on the inner side of the connecting section.

6. A pressure-type temperature gauge according to claim 4, characterized in that, The connecting part is provided with a second sealing gasket, which is placed between the sealing structure and the connecting section, and the capillary passes through and presses against the second sealing gasket.

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