CN107063589A - A kind of vacuum pipe package seal checker - Google Patents

Abstract

The invention discloses a vacuum pipeline sealing detection device, which comprises a first pipe body, a second pipe body, an inner layer sealing connecting piece and an outer sealing joint arranged between the opposite end faces of the first pipe body and the second pipe body. Layer sealing connectors, and a pipeline seal detection mechanism for detecting the airtightness of the inner layer sealing connectors and outer layer sealing connectors; an annular sealing cavity is formed between the inner layer sealing connectors and the outer layer sealing connectors The body is arranged, and the pipeline sealing detection mechanism is respectively connected through the annular sealing cavity and the connected vacuum pipeline. Sequential structural design, the setting of the pipeline sealing detection mechanism that can be connected with the annular sealing cavity and the connected vacuum pipeline can obtain the detection data in time, so as to effectively monitor the sealing status between adjacent pipe bodies, and at the same time, it can be conveniently Under the condition of not destroying the vacuum degree in the vacuum pipeline, the defective inner layer sealing connector or the outer layer sealing connector is replaced separately.

Description

A vacuum pipeline seal detection device

technical field

The invention relates to the technical field of pipelines, in particular to a vacuum pipeline sealing detection device.

Background technique

In the prior art, when the two relatively moving pipe bodies are sealed and connected, the sealing structure is relatively simple, and because the pipeline to be sealed is long, the number of sealing structures is large, and due to the lack of real-time detection devices for the sealing structure, it makes the There is a great potential safety hazard in the sealing between the two pipe bodies.

Contents of the invention

The object of the present invention is to provide a vacuum pipeline seal detection device capable of timely performing seal detection on adjacent pipe bodies.

For reaching this purpose, the present invention adopts following technical scheme:

A vacuum pipeline seal detection device, comprising a first pipe body, a second pipe body, an inner layer sealing connector and an outer layer sealing connector arranged between the opposite end surfaces of the first pipe body and the second pipe body , and a pipeline seal detection mechanism for detecting the airtightness of the inner layer sealing connector and the outer layer sealing connector; the inner layer sealing connector and the outer layer sealing connector are arranged in an annular sealing cavity, so The pipeline sealing detection mechanism is respectively connected through the annular sealing cavity and the connected vacuum pipeline.

Wherein, the pipe seal detection mechanism includes a first detection channel for obtaining the ratio between the air pressure value of the annular sealed cavity and the external standard air pressure value, and a second detection channel for obtaining the ratio between the air pressure value of the annular sealed cavity and the vacuum pipeline. Two detection channels, and a third detection channel for obtaining the ratio between the air pressure value of the vacuum pipeline and the external standard air pressure value.

Wherein, the first detection channel, the second detection channel, and the third detection channel are all electrically connected to an external electric control device.

Wherein, the first detection channel, the second detection channel, and the third detection channel are all provided with air pressure sensors and ventilation valves.

Wherein, the opposite end surfaces of the first pipe body and the second pipe body are provided with an inner annular positioning ring and an outer annular positioning ring; the two ends of the inner sealing connector are respectively connected to the corresponding inner layer The annular positioning ring is fastened; the two ends of the outer sealing connector are respectively fastened to the corresponding outer annular positioning ring.

Wherein, the two ends of the outer sealing connector are fastened to the outer annular positioning ring through a tie; the two ends of the inner sealing connector are fastened to the inner annular positioning ring through a screw.

Wherein, the inner annular positioning ring has a plurality of mounting holes evenly distributed in the circumferential direction, one end of the mounting holes is embedded with a nut matched with the screw rod.

Wherein, the inner sealing connector and the outer sealing connector have the same structure, and both the inner sealing connector and the outer sealing connector are provided with a first arc-shaped wall and a second arc-shaped wall radially recessed along the circumferential surface. an arc-shaped wall, and a positioning wall extending horizontally from the outer end of the second arc-shaped wall, the second arc-shaped wall is smoothly transitioned to the two ends of the first arc-shaped wall, and the first arc-shaped wall It is set opposite to the concave direction of the second arc-shaped wall.

Wherein, the opposite end surfaces of the first pipe body and the second pipe body are protrudingly provided with an annular positioning ring, and the annular positioning ring includes a fixing part fastened to the positioning wall, and a fixed part connected to the second arc-shaped The concave surface of the wall closely fits the sealing part, and the sealing part is annularly protruded on the peripheral surface of the annular positioning ring.

Beneficial effects of the present invention: The present invention provides a vacuum pipeline seal detection device, which includes a first pipe body, a second pipe body, and an inner tube arranged between the opposite end surfaces of the first pipe body and the second pipe body. Layer sealing connectors and outer layer sealing connectors, and a pipeline seal detection mechanism for detecting the airtightness of the inner layer sealing connectors and outer layer sealing connectors; the inner layer sealing connectors and outer layer sealing connectors An annular sealing cavity is arranged between them, and the pipeline sealing detection mechanism is respectively connected through the annular sealing cavity and the connected vacuum pipeline. Sequential structural design, the setting of the pipeline sealing detection mechanism that can be connected with the annular sealing cavity and the connected vacuum pipeline can obtain the detection data in time, so as to effectively monitor the sealing status between adjacent pipe bodies, and at the same time, it can be conveniently Under the condition of not destroying the vacuum degree in the vacuum pipeline, the defective inner layer sealing connector or the outer layer sealing connector is replaced separately.

Description of drawings

Fig. 1 is a schematic diagram of an axial sectional structure of a sealing connector of the present invention.

Fig. 2 is a schematic structural view of annular positioning rings on opposite ends of the first connecting body and the second connecting body in the present invention.

Fig. 3 is a structural schematic diagram of a vacuum pipeline provided with a sealed joint according to the present invention.

Fig. 4 is a partial enlarged view of A in Fig. 3 .

FIG. 5 is a schematic structural view of the BB section in FIG. 4 .

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

As shown in FIG. 1 to FIG. 5 , this embodiment provides a vacuum pipeline seal detection device, including a first pipe body 1, a second pipe body 2, and a first pipe body 1 and a second pipe body 2 The inner layer sealing connection part 34 and the outer layer sealing connection part 35 between the opposite end faces, and the pipeline sealing detection mechanism 80 for detecting the airtightness of the inner layer sealing connection part 34 and the outer layer sealing connection part 35; The inner sealing connector 34 and the outer sealing connector 35 are arranged in an annular sealing cavity 36 , and the pipeline sealing detection mechanism 80 is connected through the annular sealing cavity 36 and the connected vacuum pipeline respectively.

Specifically, in this embodiment, the pipeline seal detection mechanism 80 includes a first detection channel for obtaining the ratio between the air pressure value of the annular sealing cavity 36 and the external standard air pressure value, and is used for obtaining the air pressure of the annular sealing cavity 36. The second detection channel for the ratio between the value and the vacuum pipeline, and the third detection channel for obtaining the ratio between the vacuum pipeline air pressure value and the external standard air pressure value, the first detection channel, the second detection channel, and the third detection channel The detection channels are all electrically connected to the external electric control device, and the first detection channel, the second detection channel, and the third detection channel are all provided with air pressure sensors and ventilation valves.

The pipeline sealing detection mechanism designed with this structure can timely and effectively obtain the air pressure change in the annular sealing cavity 36 and the connected vacuum pipeline through the setting of each detection channel, and then determine whether the inner sealing connector 34 or the outer sealing connection The tightness of part 35 is convenient for timely and effective maintenance. Designed in the above way, after the data collected by each channel is analyzed and judged by the external electronic control device, the ventilation valve on the corresponding detection channel is adjusted, and then the air pressure ratio of each detection channel is adjusted to balance the vacuum in the vacuum pipeline At the same time, it is also possible to remotely determine the location of the air leak based on the acquired data, and replace the problematic inner or outer sealing connectors separately without affecting the vacuum degree in the vacuum pipeline.

Further, in this embodiment, the opposite end surfaces of the first pipe body 1 and the second pipe body 2 are provided with an inner annular positioning ring 43 and an outer annular positioning ring 44; the inner sealing connector 34 The two ends of the corresponding inner annular positioning ring 43 are fastened respectively; the two ends of the outer sealing connector 35 are respectively fastened with the corresponding outer annular positioning ring 44, and the outer sealing connection The two ends of the part 35 are fastened with the outer annular positioning ring through the tie band 5; the two ends of the inner sealing connector 34 are fastened with the inner annular positioning ring 43 through the screw rod 6, and the inner layer The annular positioning ring 43 is uniformly distributed with a plurality of installation holes in the circumferential direction, and one end of the installation holes is embedded with a nut 7 matched with the screw rod 6, and the inner sealing connector 34 and the outer sealing connector 35 have the same structure, and the Both the inner sealing connector 34 and the outer sealing connector 35 are provided with a first arc-shaped wall 31 and a second arc-shaped wall 32 radially recessed along the circumferential surface, and horizontally extending from the second arc-shaped wall 32 The positioning wall 33 at the outer end, the second arc-shaped wall 32 is smoothly transitioned to the two ends of the first arc-shaped wall 31, and the first arc-shaped wall 31 and the second arc-shaped wall 32 are recessed The direction is set in the opposite direction, and the opposite end surfaces of the first pipe body 1 and the second pipe body 2 are protrudingly provided with an annular positioning ring 40, and the annular positioning ring 40 includes a fixing part 41 fastened to the positioning wall 33, And a sealing portion 42 that closely fits the concave surface of the second arc-shaped wall 32 , and the sealing portion 42 is annularly protruded on the peripheral surface of the annular positioning ring 40 .

In this embodiment, the air pressure value of the inner concave surface of the first arc-shaped wall in the connected vacuum pipeline is smaller than the air pressure value of the outer concave surface of the first arc-shaped wall, so that the inner concave surface of the second arc-shaped wall can be tightly sealed with the sealing part In addition, due to the setting of the inner layer sealing connector 34 and the outer layer sealing connector 35, and the outer layer sealing connector 35 and the outer annular positioning ring 44 pass through the tie 5 for fixing, so as to facilitate installation and maintenance on the outside of the vacuum pipeline; the inner sealing connector 34 and the inner annular positioning ring 43 are fixed by bolts and nuts, so as to facilitate the sealing of the inner layer from the vacuum pipeline cavity Connector 34 for installation and maintenance. The design in this way can not only effectively improve the airtightness after the connection between adjacent vacuum pipes, but also facilitate the installation and maintenance of the inner sealing connector 34 and the outer sealing connector 35 .

The above describes the technical principles of the present invention in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention, and cannot be construed as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation modes of the present invention without creative work, and these modes will all fall within the protection scope of the present invention.

Claims (9)

1. a kind of vacuum pipe package seal checker, it is characterised in that：Including the first body, the second body, it is arranged at described Internal layer sealed connecting component and outer layer sealed connecting component between the opposite end surface of one body and the second body and for detecting The seal for pipe joints testing agency of internal layer sealed connecting component and outer layer the sealed connecting component air-tightness；The internal layer sealed connecting component Between outer layer sealed connecting component in a ring seal cavity set, the seal for pipe joints testing agency respectively with the ring packing Vacuum pipe insertion connection after cavity and connection.

2. a kind of vacuum pipe package seal checker according to claim 1, it is characterised in that：The seal for pipe joints detection Mechanism includes the first sense channel, the use for being used to obtain ratio between the atmospheric pressure value of ring packing cavity and external perimysium reference atmospheric pressure value In obtaining between ring packing cavity atmospheric pressure value and vacuum pipe the second sense channel of ratio and for obtaining vacuum pipe 3rd sense channel of ratio between atmospheric pressure value and external perimysium reference atmospheric pressure value.

3. a kind of vacuum pipe package seal checker according to claim 2, it is characterised in that：First detection is logical Road, the second sense channel and the 3rd sense channel are electrically connected with outside electric control gear.

4. a kind of vacuum pipe package seal checker according to claim 3, it is characterised in that：First detection is logical Road, the second sense channel and the 3rd sense channel are provided with baroceptor and breather valve.

5. a kind of vacuum pipe package seal checker according to claim 1, it is characterised in that：First body and The opposite end surface of two bodys is provided with the annular centring ring of internal layer and outer annular centring ring；The internal layer sealed connecting component Two ends are fastened with the annular centring ring of the corresponding internal layer respectively；The two ends of the outer layer sealed connecting component respectively with corresponding institute State the fastening of outer annular centring ring.

6. a kind of vacuum pipe package seal checker according to claim 5, it is characterised in that：The outer layer is tightly connected The two ends of part are fastened by pricking hoop with the outer annular centring ring；The two ends of the internal layer sealed connecting component pass through screw rod and institute State the annular centring ring fastening of internal layer.

7. a kind of vacuum pipe package seal checker according to claim 6, it is characterised in that：The internal layer circular orientation Circle is circumferential to be evenly equipped with multiple mounting holes, and one end of the mounting hole is embedded with the nut that the screw rod is engaged.

8. a kind of vacuum pipe package seal checker according to claim 1, it is characterised in that：The internal layer is tightly connected Part is identical with outer layer sealed connecting component structure, and the internal layer sealed connecting component and outer layer sealed connecting component are provided with circumferentially face Radially recessed the first arcwall and the second arcwall, and horizontal extension is in the positionable wall of the second arcwall outer end, institute State the second arcwall and seamlessly transit the two ends for being arranged at first arcwall, and first arcwall and second arc The recessed setting in opposite direction of wall.

9. a kind of vacuum pipe package seal checker according to claim 8, it is characterised in that：First body and The opposite end surface of two bodys is convexly equipped with circular orientation circle, and the circular orientation circle includes the fixation fastened with the positionable wall Portion, and the sealing being brought into close contact with the concave surface of second arcwall, it is fixed that the sealing ring-type is convexly equipped in the annular The side face of position circle.