CN216524549U - Vacuum degree detection mechanism - Google Patents

Abstract

The present disclosure provides a vacuum detection mechanism, comprising: the lower base is connected with the upper base through a plurality of support columns, a jump disc capable of being adjusted up and down is arranged on the upper base, corresponding contacts are arranged between the jump disc and the upper base, the corresponding contacts are mutually abutted, and a normally-closed signal is output; the upper base is provided with a jump hole, the jump disc is slidably inserted in the jump hole through the first touch rod, the lower base is provided with a detection port for detecting the vacuum degree, the detection port is provided with a sealing element capable of generating tensile deformation towards the direction of the first touch rod, and the deformed sealing element can push the first touch rod, so that the corresponding contacts are mutually far away, and a normally open signal is output; and the detection circuit board is used for being connected with the corresponding contacts and detecting a normally closed signal or a normally open signal. The method has the characteristics of high detection safety, high distinguishability and the like.

Description

Vacuum degree detection mechanism

Technical Field

The disclosure relates to the field of electron accelerator detection, in particular to a vacuum degree detection mechanism.

Background

For systems such as electron accelerators that require high vacuum, the detection of the vacuum degree is generally achieved by means of vacuum gauges, ion pump currents, and the like. The problem is that when the vacuum system is in accident and the vacuum degree is close to the atmospheric pressure, the detection devices can not generate ionization, and the current indication of the ion pump is not much different from the high vacuum state. If the equipment operator can not distinguish the equipment and the equipment is started by mistake, a serious accident can be caused, and very serious consequences are brought.

There is a need for a detection mechanism that avoids the use of ionization to distinguish whether the electron accelerator is vacuum.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a vacuum detection mechanism to at least solve the above technical problems existing in the prior art.

The present disclosure provides a vacuum detection mechanism, including: the device comprises a lower base and an upper base, wherein the lower base is connected with the upper base through a plurality of support columns, a jump disc capable of being adjusted up and down is arranged on the upper base, contacts corresponding to each other are arranged between the jump disc and the upper base, the contacts corresponding to each other are abutted against each other, and a normally-closed signal is output; the upper base is provided with a jump hole, the jump disc is slidably inserted into the jump hole through a first touch rod, the lower base is provided with a detection port for detecting the vacuum degree, a sealing element which can generate tensile deformation towards the direction of the first touch rod is arranged at the detection port, and the deformed sealing element can push the first touch rod to enable the corresponding contacts to be far away from each other and output a normally open signal; and the detection circuit board is used for being connected with the corresponding contacts and detecting the normally closed signal or the normally open signal.

In an implementation mode, elastic pieces are arranged on two sides of the jumping disc, and the jumping disc is connected with the upper base through the elastic pieces.

In an embodiment, a limiting member for limiting the stretching stroke of the sealing member is further disposed between the upper base and the lower base.

In an embodiment, the limiting member is a sliding limiting plate disposed on the supporting pillar, and the sliding limiting plate is positioned at a height position of the supporting pillar by a bolt.

In an implementation mode, the sliding limiting plate comprises two limiting plates which are matched with each other, and an assembly gap is reserved between the two limiting plates.

In an embodiment, the sealing element is a bellows, and one end of the bellows away from the detection port is sealed by a sealing plate; an adjusting space is formed between the upper base and the lower base, the corrugated pipe is arranged in the adjusting space, and the corrugated pipe can stretch along the axis of the corrugated pipe.

In an embodiment, a window is provided in the middle of the sliding position limiting plate, and the window is used for receiving the sealing plate, and the diameter of the window is smaller than that of the corrugated pipe.

In one embodiment, a second contact rod is connected to the sealing plate, and the second contact rod is coaxial with the first contact rod.

In an embodiment, the first contact rod and the second contact rod are both provided as insulating rods.

In an embodiment, the device further comprises a protective cover covering the lower base.

The vacuum degree detection mechanism has the advantages of being high in detection safety, high in identifiability and the like. The vacuum degree is detected by utilizing the atmospheric pressure principle and using a mechanical transmission mode, the misoperation is low, and the vacuum degree of the electron accelerator can be detected more intuitively.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:

in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

FIG. 1 is a schematic structural view of a vacuum detection mechanism according to an embodiment of the present disclosure with a protective cover hidden;

FIG. 2 is a schematic view of a portion of a vacuum detection mechanism base according to one embodiment of the present disclosure;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

fig. 5 is a sectional view taken along the direction B-B in fig. 3.

Wherein the figures include the following reference numerals:

1. a lower base; 2. an upper base; 21. jumping holes; 3. a support pillar; 4. jumping over; 41. a first feeler lever; 42. an elastic sheet; 5. a contact; 6. a sliding limit plate; 61. a window; 7. a bellows; 8. closing the plate; 81. a second feeler lever.

Detailed Description

In order to make the objects, features and advantages of the present disclosure more apparent and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

The present disclosure provides a vacuum degree detection mechanism, which in this embodiment is used to connect an electron accelerator for detecting the vacuum degree of the electron accelerator, but is not limited to only detecting the vacuum degree of the electron accelerator.

Referring to fig. 1, the vacuum degree detection mechanism comprises a lower base 1 and an upper base 2, wherein the lower base 1 is used for being connected with an electron accelerator, a detection port for detecting the vacuum degree of the electron accelerator is arranged on the lower base 1, and a protective cover is covered on the lower base 1, so that dust can be isolated, and the vacuum degree detection mechanism can protect each part.

Referring to fig. 1 and 2, in the embodiment of the present disclosure, a lower base 1 is connected with an upper base 2 through a plurality of support columns 3, a jump disk 4 which can be adjusted up and down is arranged on the upper base 2, contacts 5 which correspond to each other are arranged between the jump disk 4 and the upper base 2, and the contacts 5 which correspond to each other are abutted to each other to output a normally closed signal; the upper base 2 is provided with a jump hole 21, the jump disk 4 is slidably inserted in the jump hole 21 through a first contact rod 41, a sealing element which can be stretched and deformed towards the direction of the first contact rod 41 is arranged at the detection port, and the deformed sealing element can push the first contact rod 41, so that the corresponding contacts 5 are far away from each other, and a normally open signal is output; the vacuum degree detection mechanism comprises a detection circuit board which is connected with the contacts 5 corresponding to each other, can detect a normally closed signal or a normally open signal, and can judge the vacuum degree condition of the electron accelerator according to the signals.

Referring to fig. 3-5, in the embodiment of the present disclosure, the sealing member is provided as a bellows 7, and one end of the bellows 7 away from the detection port is sealed by a sealing plate 8; an adjusting space is formed between the upper base 2 and the lower base 1, the corrugated pipe 7 is arranged in the adjusting space, and the corrugated pipe 7 can stretch along the axis of the corrugated pipe 7. When the vacuum degree of the electron accelerator is detected and the vacuum degree is higher, the pressure in the corrugated pipe 7 is lower than the standard atmospheric pressure outside the corrugated pipe 7, and the corrugated pipe 7 contracts; when the degree of vacuum is insufficient, the pressure inside the bellows 7 approaches the standard atmospheric pressure outside the bellows 7, and the bellows 7 recovers its tension.

Referring to fig. 1, in the embodiment of the present disclosure, a limiting member is further disposed between the upper base 2 and the lower base 1, and the limiting member can play a role in limiting a stretching stroke of the bellows 7.

In the embodiment of the present disclosure, the limiting member is configured as a sliding limiting plate 6 capable of adjusting the height of the supporting column 3, and the sliding limiting plate 6 is positioned at a height position of the supporting column 3 by a bolt.

In the embodiment of the present disclosure, a window 61 is provided in the middle of the sliding position limiting plate 6 to allow the closing plate 8 to pass through, the diameter of the window 61 is smaller than the diameter of the bellows 7, and after the bellows 7 is stretched, the maximum stretched length of the bellows 7 is limited by the window 61, but the closing plate 8 can pass through the window 61.

In the embodiment of this disclosure, slip limiting plate 6 includes two limiting plates of mutually supporting, reserves the assembly space between two limiting plates, can conveniently assemble and dismantle.

Referring to fig. 1, 3 and 5, in the embodiment of the present disclosure, a second feeler lever 81 is connected to the sealing plate 8, the second feeler lever 81 is coaxial with the first feeler lever 41, when the vacuum degree is not detected or the detected vacuum degree is not close to a standard atmospheric pressure, the bellows 7 is in a normal stretching state, and the second feeler lever 81 can jack up the first feeler lever 41 upward, so that the jump disk 4 and the contact 5 arranged on the upper base 2 are away from each other, and a normally open signal is output to the detection circuit board; the vacuum degree that detects is great, and when atmospheric pressure in the electron accelerator was less than a standard atmospheric pressure, bellows 7 appeared to be the contraction state, and second feeler lever 81 moves down, and first feeler lever 41 does not receive ascending thrust, and the effect of elasticity is lower the diving board 4 reconversion for 5 mutual butt of contact that set up on diving board 4 and the last base 2, thereby can be to detection circuitry board output normally closed signal.

In an embodiment not shown, the jump disk 4 is arranged on the lower side of the upper base 2, when the vacuum degree is not detected or the detected vacuum degree is not close to a standard atmospheric pressure, the corrugated pipe 7 is in a normal stretching state, the second contact rod 81 can jack the first contact rod 41 upwards, so that the jump disk 4 is contacted with the contact 5 arranged on the upper base 2, and a normally closed signal is output to the detection circuit board; the vacuum degree of detection is better, and when atmospheric pressure in the electron accelerator was less than a standard atmospheric pressure, bellows 7 appeared to be the contraction state, and second feeler lever 81 moves down, and first feeler lever 41 does not receive ascending thrust, and the jump ring 4 drops downwards under the effect of gravity for the contact 5 that sets up on jump ring 4 and the last base 2 keeps away from each other, thereby can be to the normally open signal of detection circuitry board output.

In the embodiment of the present disclosure, the first contact rod 41 and the second contact rod 81 are both provided as insulating rods, which can prevent a short circuit.

Referring to fig. 2-4, in the embodiment of the present disclosure, elastic pieces 42 are disposed on both sides of the diving board 4, the diving board 4 is connected to the upper base 2 through the elastic pieces 42, and the elastic pieces 42 function to support the diving board 4 and do not affect the up-and-down movement of the diving board 4; and because the mass of the jumping disc 4 is very small, the jumping disc 4 can not be abutted with the contact 5 arranged on the upper base 2 by the light gravity, so that the elastic sheet 42 is made into an arched shape.

In summary, the vacuum degree detection mechanism has the following advantages:

1. the detection safety is high;

2. the discriminability is high.

The vacuum degree is detected by utilizing the atmospheric pressure principle and using a mechanical transmission mode, the misoperation is low, and the vacuum degree of the electron accelerator can be detected more intuitively.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present disclosure, and shall cover the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (10)

1. A vacuum detection mechanism, comprising:

a lower base (1) and an upper base (2), wherein the lower base (1) is connected with the upper base (2) through a plurality of supporting columns (3),

a jump disk (4) capable of being adjusted up and down is arranged on the upper base (2), contacts (5) corresponding to each other are arranged between the jump disk (4) and the upper base (2), and the contacts (5) corresponding to each other are abutted against each other to output a normally closed signal;

the upper base (2) is provided with a jump hole (21), the jump disk (4) is slidably inserted in the jump hole (21) through a first contact rod (41),

a detection port for detecting the vacuum degree is arranged on the lower base (1), a sealing element which can generate tensile deformation towards the first feeler lever (41) is arranged at the detection port,

the deformed sealing element can push the first contact rod (41) to enable the mutually corresponding contacts (5) to be away from each other, and a normally open signal is output;

and the detection circuit board is used for being connected with the corresponding contacts (5) and detecting the normally closed signal or the normally open signal.

2. The vacuum degree detection mechanism according to claim 1, characterized in that elastic pieces (42) are arranged on two sides of the jump disk (4), and the jump disk (4) is connected with the upper base (2) through the elastic pieces (42).

3. The vacuum degree detection mechanism according to claim 1, wherein a limit member for limiting the extension stroke of the sealing member is further provided between the upper base (2) and the lower base (1).

4. The vacuum degree detection mechanism according to claim 3, wherein the limiting member is a sliding limiting plate (6) arranged on the supporting column (3), and the sliding limiting plate (6) is positioned at a height position of the supporting column (3) through a bolt.

5. The vacuum degree detection mechanism according to claim 4, wherein the sliding limit plate (6) comprises two limit plates which are matched with each other, and an assembly gap is reserved between the two limit plates.

6. The vacuum degree detection mechanism according to claim 4, characterized in that the sealing element is provided as a bellows (7), and one end of the bellows (7) far away from the detection port is sealed by a sealing plate (8); an adjusting space is formed between the upper base (2) and the lower base (1), the corrugated pipe (7) is arranged in the adjusting space, and the corrugated pipe (7) can stretch along the axis of the corrugated pipe.

7. The vacuum degree detection mechanism according to claim 6, wherein a window (61) for the closing plate (8) to pass through is arranged in the middle of the sliding limiting plate (6), and the diameter of the window (61) is smaller than that of the corrugated pipe (7).

8. The vacuum detection mechanism according to claim 6, characterized in that a second feeler lever (81) is connected to the closing plate (8), said second feeler lever (81) being coaxial with the first feeler lever (41).

9. The vacuum degree detection mechanism according to claim 8, wherein the first feeler lever (41) and the second feeler lever (81) are each provided as an insulating lever.

10. The vacuum degree detection mechanism according to claim 1, further comprising a shield covering the lower base (1).

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