Metal capacitance vacuum gauge sealing assembly

Abstract

The utility model discloses a metal capacitance vacuum gauge sealing assembly, which comprises a metal capacitance vacuum gauge, a sealing protection main body, a connecting pipe and a fixed connection flange, the sealing protection main body is clamped and attached outside the metal capacitance vacuum gauge, the connecting pipe is fixedly connected to the middle part of the bottom end of the metal capacitance vacuum gauge, and the fixed connection flange is fixedly connected with the sealing protection main body. The fixed connecting flange is fixedly installed at the bottom end of the connecting pipe, the bottom end of the connecting pipe is fixedly connected with a first sealing rubber ring, the sealing protection body comprises a first sealing cover, a fixed installing ring, a fixing bolt and a second sealing cover, the first sealing cover is arranged above the second sealing cover, and the fixed installing ring is arranged above the first sealing cover. And the fixed mounting ring is fixedly connected to the first sealing cover and the second sealing cover. In the using process, the sealing performance can be fully ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal electric capacity vacuum gauge technical field, concretely is a kind of metal electric capacity vacuum gauge sealing assembly. BACKGROUND

[0002] The working principle of metal electric capacity vacuum gauge mainly utilizes the capacitance change between two metal plates (or metal diaphragm) to detect vacuum degree. When there is gas between the metal plates, gas molecules will reduce the capacitance between the two plates (or diaphragm), and by measuring the change of such capacitance, the value of vacuum degree can be calculated. Specifically, when the metal diaphragm is in a vacuum environment, the pressure it receives is very small, and the diaphragm will vibrate slightly as a result. When the gas pressure gradually increases, the vibration frequency and amplitude of the diaphragm will also change, and these changes can be measured by the change of capacitance, so as to calculate the gas pressure and vacuum degree in the environment. In vacuum measurement technology, electric capacity vacuum gauge is widely used due to its high precision and stability. However, the traditional electric capacity vacuum gauge sealing assembly has problems such as insufficient airtightness and poor corrosion resistance, which affects the measurement accuracy and service life of the vacuum gauge, so a metal electric capacity vacuum gauge sealing assembly is needed to solve the above problems. SUMMARY

[0003] The utility model aims at providing a kind of metal electric capacity vacuum gauge sealing assembly to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: a kind of metal electric capacity vacuum gauge sealing assembly, including metal electric capacity vacuum gauge, sealing protection main body, connecting pipe and fixed connection flange, the sealing protection main body is clamped and fixed and is attached to the outside of the metal electric capacity vacuum gauge, the connecting pipe is fixedly connected in the bottom end middle part of the metal electric capacity vacuum gauge, and the fixed connection flange is fixedly installed at the bottom end of the connecting pipe.

[0005] Preferably, the bottom end of the connecting pipe is fixedly connected with a first sealing rubber ring.

[0006] Preferably, the sealing protection main body includes a first sealing cover, a fixed mounting ring, a fixed bolt and a second sealing cover, the first sealing cover is arranged above the second sealing cover, the fixed mounting ring is fixedly connected on the first sealing cover and the second sealing cover, and the fixed bolt is uniformly screwed into the fixed mounting ring arranged on the first sealing cover and the second sealing cover.

[0007] Preferably, a second sealing rubber ring is clamped and fixed between the fixed mounting rings.

[0008] Preferably, the first sealing cover is attached to the housing at the upper end of the metal capacitance vacuum gauge, the second sealing cover is attached to the housing at the bottom end of the metal capacitance vacuum gauge, and the first sealing cover and the second sealing cover seal the gap between the upper housing of the metal capacitance vacuum gauge.

[0009] Compared with the prior art, the utility model has the advantages that:

[0010] The sealing protection main body can fully protect and seal the metal capacitance vacuum gauge, the gap between the upper housing connection end of the metal capacitance vacuum gauge is good in sealing, the sealing protection main body is convenient to fix and disassemble, the first sealing cover and the second sealing cover are firmly and adaptively clamped on the metal capacitance vacuum gauge after being uniformly fixed on the fixed mounting ring connected to the first sealing cover and the second sealing cover through the fixing bolt, the first sealing cover and the second sealing cover can protect the metal capacitance vacuum gauge, and the gap on the metal capacitance vacuum gauge can be sealed and blocked, the second sealing rubber ring arranged between the fixed mounting rings plays an auxiliary sealing role, and the first sealing rubber ring is fixedly arranged at the bottom end of the connecting pipe, so that the connecting pipe is fixedly connected and the connection is fully sealed. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a schematic view of the main body structure of the utility model;

[0012] Figure 2 It is a schematic view of the main body structure of the utility model;

[0013] Figure 3 It is a schematic view of the main body structure of the utility model;

[0014] Figure 4 It is a schematic view of the main body structure of the utility model.

[0015] In the drawing: 1-metal capacitance vacuum gauge, 2-sealing protection main body, 3-connecting pipe, 4-fixed connection flange, 5-first sealing rubber ring, 6-first sealing cover, 7-fixed mounting ring, 8-fixing bolt, 9-second sealing cover, 10-second sealing rubber ring. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] As Figures 1-4 shown, the utility model provides an embodiment: a kind of metal electric capacity vacuum gauge sealing assembly, including metal electric capacity vacuum gauge 1, sealing protection main body 2, connecting pipe 3 and fixed connection flange 4, sealing protection main body 2 is clamped and fixed and is attached to the outside of metal electric capacity vacuum gauge 1, connecting pipe 3 is fixedly connected in the bottom end middle part of metal electric capacity vacuum gauge 1, fixed connection flange 4 is fixedly installed in the bottom end of connecting pipe 3.

[0018] The bottom end of connecting pipe 3 is fixedly connected with first sealing rubber ring 5, so that connecting pipe 3 can be fully sealed after fixed connection.

[0019] Sealing protection main body 2 includes first sealing cover 6, fixed mounting ring 7, fixed bolt 8 and second sealing cover 9, first sealing cover 6 is arranged above second sealing cover 9, fixed mounting ring 7 is fixedly connected on first sealing cover 6 and second sealing cover 9, and fixed bolt 8 is uniformly screwed on the fixed mounting ring 7 arranged on first sealing cover 6 and second sealing cover 9.

[0020] Second sealing rubber ring 10 is clamped and fixed between fixed mounting ring 7, which plays an auxiliary sealing role.

[0021] First sealing cover 6 is attached between the shell on the upper end of metal electric capacity vacuum gauge 1, second sealing cover 9 is attached between the shell arranged at the bottom end of metal electric capacity vacuum gauge 1, and the gap at the connection of the upper shell of metal electric capacity vacuum gauge 1 is sealed by first sealing cover 6 and second sealing cover 9, so that the gap at the connection of the upper shell of metal electric capacity vacuum gauge 1 can be fully sealed by first sealing cover 6 and second sealing cover 9.

[0022] Working principle: during use, metal electric capacity vacuum gauge 1 can be fully protected by sealing protection main body 2, so that the gap between the connection ends of the upper shell of metal electric capacity vacuum gauge 1 is well sealed, and sealing protection main body 2 is convenient to fix and disassemble, after fixed bolt 8 is uniformly inserted into the fixed mounting ring 7 connected to first sealing cover 6 and second sealing cover 9, first sealing cover 6 and second sealing cover 9 can be firmly fitted on metal electric capacity vacuum gauge 1, metal electric capacity vacuum gauge 1 can be protected by first sealing cover 6 and second sealing cover 9, and the gap on metal electric capacity vacuum gauge 1 can be sealed and plugged, second sealing rubber ring 10 arranged between fixed mounting ring 7 plays an auxiliary sealing role, and first sealing rubber ring 5 is fixedly arranged at the bottom end of connecting pipe 3, so that the connection is fully sealed after fixed connection of connecting pipe 3 by first sealing rubber ring 5.

[0023] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealed assembly of a metal capacitance vacuum gauge, comprising a metal capacitance vacuum gauge (1), a sealed protective body (2), a connecting tube (3) and a fixed connecting flange (4), characterized in that: The sealing protection body (2) is clamped and attached to the outside of the metal capacitance vacuum gauge (1), the connecting pipe (3) is fixedly connected to the bottom middle part of the metal capacitance vacuum gauge (1), and the fixed connection flange (4) is fixedly installed at the bottom end of the connecting pipe (3).

2. A metal capacitor vacuum gauge sealing assembly according to claim 1, characterized in that: The bottom end of the connecting pipe (3) is fixedly connected with a first sealing rubber ring (5).

3. A metal capacitor vacuum gauge sealing assembly according to claim 2, wherein: The sealing protection body (2) comprises a first sealing cover (6), a fixed installation ring (7), a fixed bolt (8) and a second sealing cover (9), the first sealing cover (6) is arranged above the second sealing cover (9), the fixed installation ring (7) is fixedly connected to the first sealing cover (6) and the second sealing cover (9), and the fixed bolt (8) is uniformly screwed into the fixed installation ring (7) arranged on the first sealing cover (6) and the second sealing cover (9).

4. A metal capacitor vacuum gauge sealing assembly according to claim 3, wherein: The second sealing rubber ring (10) is clamped and arranged between the fixed installation rings (7).

5. A metal capacitor vacuum gauge sealing assembly according to claim 4, wherein: The first sealing cover (6) is attached to the shell at the upper end of the metal capacitance vacuum gauge (1), the second sealing cover (9) is attached to the shell arranged at the bottom end of the metal capacitance vacuum gauge (1), and the first sealing cover (6) and the second sealing cover (9) seal the gap at the connection between the upper shell and the metal capacitance vacuum gauge (1).

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