Connecting device for on-line detection of safety valve

Abstract

The utility model discloses a connecting device for on-line detection of a safety valve, and belongs to the technical field of safety valve detection. Comprising a mounting disc and a fixator, the mounting disc is used for supporting the safety valve, and the fixator is used for fixedly connecting the safety valve with the mounting disc. And the bottom of the mounting disc is connected with a vertical pipe in a penetrating manner. The fixing device comprises an arc-shaped rod, the two ends of the arc-shaped rod are connected with pressing blocks which are arranged downwards through connecting rods, two rotating shafts which are symmetrically arranged are arranged on the outer side of the arc-shaped rod, and the rotating shafts are rotationally connected with the vertical pipe. The arc-shaped rod is sleeved with a sleeve, the sleeve is connected with a telescopic device, and the telescopic device controls the sleeve to move up and down. According to the utility model, the dismounting of the safety valve can be completed through the telescoping of the telescopic rod, the dismounting time of the safety valve during detection is shortened, the detection efficiency is improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety valve detection, and particularly relates to a connecting device for on-line detection of safety valves. Background Art

[0002] Before leaving the factory and after being used for a period of time, safety valves need to be calibrated and detected to test whether there is a deviation between the opening pressure value of the safety valve and the preset value. At present, when detecting a safety valve, the safety valve is fixed on a detection pipeline. The fixing method is to add a gasket between the installation flange of the safety valve and the connection flange of the detection pipeline, and then the two flanges are fixedly connected by bolts. Therefore, at least 4 bolts need to be tightened during the fixed connection to ensure the reliability and tightness of the connection. As a result, the installation and disassembly of the safety valve during detection take most of the time, which is time-consuming and laborious. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a connecting device for on-line detection of safety valves. The utility model can complete the disassembly and assembly of the safety valve by the expansion and contraction of the telescopic rod, shorten the disassembly and assembly time of the safety valve during detection, improve the detection efficiency, and reduce the labor intensity.

[0004] The technical solution adopted by the utility model to solve the problems existing in the prior art is as follows:

[0005] A connecting device for on-line detection of safety valves includes an installation disk and a fixator. The installation disk is used to support the safety valve, and the fixator is used to fixedly connect the safety valve and the installation disk.

[0006] A vertical pipe is connected through the bottom of the installation disk.

[0007] The fixator includes an arc-shaped rod. The two ends of the arc-shaped rod are connected with downwardly arranged pressing blocks through connecting rods. Two symmetrically arranged rotating shafts are arranged on the outer side of the arc-shaped rod, and the rotating shafts are rotatably connected with the vertical pipe.

[0008] A sleeve is sleeved on the arc-shaped rod, and the sleeve is connected with a telescopic device, and the telescopic device controls the up and down movement of the sleeve.

[0009] Preferably, the telescopic device includes a telescopic rod fixedly connected with the sleeve and a driving device connected to the bottom of the telescopic rod.

[0010] Preferably, an installation groove is recessed in the middle of the installation disk, a through hole is provided at the center of the installation groove, the through hole is connected through with the vertical pipe, the installation flange at the bottom of the safety valve is clamped inside the installation groove, and the pressing block is pressed above the installation flange.

[0011] Preferably, a reducing ring arranged coaxially is sleeved inside the installation groove. The inner diameter of the reducing ring is the same as the outer diameter of the installation flange, and the reducing ring is sleeved outside the installation flange.

[0012] Preferably, a plurality of positioning grooves are recessed on the inner wall of the installation groove, and clamping blocks are protruded on the outer circumferential surface of the reducing ring. The clamping blocks are inserted into the positioning grooves.

[0013] Preferably, the rotating shaft is rotationally connected to the vertical pipe through a rotating shaft bracket.

[0014] Preferably, the inner hole of the sleeve is a waist-shaped hole, and the cross section of the arc-shaped rod is circular.

[0015] Preferably, the shape of the pressing block is an arc-shaped plate.

[0016] Preferably, the radian of the arc-shaped rod is 180°, and it is arranged in a semi-circular shape.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: The telescopic movement of the telescopic rod can drive the up and down movement of the pressing block, thereby completing the disassembly and assembly of the safety valve, shortening the disassembly and assembly time of the safety valve during detection, improving the detection efficiency, and reducing the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described below with reference to the drawings and embodiments.

[0019] Figure 1 is a structural diagram of the connection device for on-line detection of the safety valve of the present utility model,

[0020] Figure 2 is an exploded view of the connection device for on-line detection of the safety valve of the present utility model,

[0021] Figure 3 is a cross-sectional view of the fixator in the connection device for on-line detection of the safety valve of the present utility model,

[0022] Figure 4 is a structural diagram of the connection device for on-line detection of the safety valve of the present utility model after the safety valve is installed and fixed,

[0023] Figure 5 is a structural diagram of the connection device for on-line detection of the safety valve of the present utility model after the safety valve is unlocked.

[0024] In the figure: 1 - vertical pipe, 101 - rotating shaft bracket, 2 - installation disc, 201 - sealing groove, 202 - positioning groove, 203 - sealing ring, 3 - reducing ring, 301 - clamping block, 4 - pressing block, 5 - connecting rod, 6 - adjusting rod, 7 - arc-shaped rod, 8 - rotating shaft, 9 - sleeve, 10 - telescopic rod, 11 - driving device, 12 - fixing frame, 13 - safety valve, 1301 - installation flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the embodiments of this application belong. The terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of this application.

[0026] In addition, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used in the specification and claims of the present utility model to describe various example structural parts and elements of the present utility model. However, these terms are used herein only for the purpose of convenience of description and are determined based on the example orientations shown in the drawings. Therefore, these terms indicating directions should only be regarded as illustrative and not restrictive. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

[0027] The following further describes in detail the connection device for on-line detection of the safety valve of the present utility model with reference to the accompanying drawings.

[0028] An on-line detection device for a safety valve, consisting of Figures 1 to 5 As shown, it includes a mounting plate 2 and a fixator. The mounting plate 2 is used to support the safety valve 13, and the fixator is used to fixedly connect the safety valve 13 to the mounting plate 2.

[0029] A vertical pipe 1 is connected through the bottom of the mounting plate 2 in a penetrating manner.

[0030] An installation groove is recessed in the middle of the mounting plate 2, and a through hole is provided at the center of the installation groove. The through hole is connected to the vertical pipe 1 in a penetrating manner. The installation flange 1301 at the bottom of the safety valve 13 is clamped inside the installation groove. The fixator acts on the installation flange 1301 and fixedly connects the installation flange 1301 to the mounting plate 2 by pressing down.

[0031] In order to be applicable to installation flanges 1301 with different outer diameters, in this embodiment, a reducing ring 3 arranged coaxially is sleeved inside the installation groove. The inner diameter of the reducing ring 3 is the same as the outer diameter of the installation flange 1301, and the reducing ring 3 is sleeved outside the installation flange 1301.

[0032] The reducing ring 3 and the installation groove can be connected by threads or insertion. For the convenience of replacement, in this embodiment, the reducing ring 3 and the installation groove are connected by insertion. Therefore, a plurality of positioning grooves 202 are recessed on the inner wall of the installation groove, and clamping blocks 301 are protruded on the outer circumferential surface of the reducing ring 3. The clamping blocks 301 are inserted into the positioning grooves 202.

[0033] When performing the opening pressure detection on the safety valve 13, high-pressure gas needs to be injected into its interior. Therefore, it is necessary to ensure the sealing effect between the installation flange 1301 and the contact surface of the installation plate 2 to avoid air leakage affecting the detection effect. For this reason, in this embodiment, a ring-shaped sealing groove 201 is recessed at the bottom of the installation groove, and a sealing ring 203 is provided inside the sealing groove 201. The sealing ring 203 is in the shape of an annular sheet, and its top surface is higher than the bottom surface of the installation groove.

[0034] The described fixator includes an arc-shaped rod 7. The arc of the arc-shaped rod 7 is 180°, and it is arranged in a semi-circular shape. Both ends of the arc-shaped rod 7 are connected with downwardly arranged pressing blocks 4 through connecting rods 5. Two symmetrically arranged rotating shafts 8 are provided on the outer side of the arc-shaped rod 7. The rotating shafts 8 are rotationally connected to the vertical pipe 1 through rotating shaft brackets 101. The rotating shaft brackets 101 are fixedly connected to the vertical pipe 1, and the rotating shafts 8 are inserted into the jacks on the rotating shaft brackets 101, and the two are rotationally connected.

[0035] A sleeve 9 is sleeved on the arc-shaped rod 7, and the sleeve 9 is located at the vertex of the arc-shaped plate 7. The sleeve 9 is connected with a telescopic device, and the telescopic device controls the up and down movement of the sleeve 9, thereby driving the pressing block 4 to rotate around the axis of the rotating shaft 8, realizing the pressing and unlocking of the safety valve 13. The shape of the pressing block 4 is an arc-shaped plate, which increases the contact area and thus improves the pressing effect.

[0036] In this embodiment, the described telescopic device includes a telescopic rod 10 and a driving device 11. The driving device 11 can adopt a hydraulic cylinder, an electric cylinder or a pneumatic cylinder, and is fixedly connected to the vertical pipe 1 through a fixing frame 12.

[0037] The arc-shaped plate 7 drives the pressing block 4 to move up and down through the lever principle. Therefore, not only vertical displacement but also horizontal displacement will occur at the connection between the arc-shaped rod 7 and the sleeve 9. In order to prevent the sleeve 9 from interfering with the movement of the arc-shaped rod 7, the inner hole of the sleeve 9 is a waist-shaped hole, and the cross-section of the arc-shaped rod 7 is circular.

[0038] For installation flanges 1301 with different outer diameters, it is necessary to adjust the position of the pressing block 4 to optimize the pressing effect. In order to adjust the position of the pressing block 4, the connecting rod 5 includes a vertical rod, a horizontal rod and an inclined rod connecting the vertical rod and the horizontal rod. The vertical rod is fixedly connected to the pressing block 4, and an adjusting rod 6 is rotationally connected to the horizontal rod of the connecting rod 5. An adjusting hole is provided on the arc-shaped plate 7, and the adjusting rod 6 passes through the adjusting hole. The adjusting hole can be a threaded hole, and the adjusting rod 6 is a screw rod, and the two are threadedly connected.

[0039] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A connection device for online detection of safety valves, characterized in that: It comprises a mounting plate (2) and a fixing device, wherein the mounting plate (2) is used to support the safety valve (13), and the fixing device is used to fix the safety valve (13) and the mounting plate (2); The bottom of the installation plate (2) is connected through a vertical pipe (1); The fixing device comprises an arc-shaped rod (7), the two ends of which are connected to downwardly arranged pressing blocks (4) via connecting rods (5), and two symmetrically arranged rotating shafts (8) are arranged outside the arc-shaped rod (7), and the rotating shafts (8) are rotatably connected to the vertical tube (1); The arc-shaped rod (7) is sleeved with a sleeve (9), and the sleeve (9) is connected with a telescopic device, and the telescopic device controls the sleeve (9) to move up and down.

2. The connection device for online detection of a safety valve according to claim 1, characterized in that: The telescopic device comprises a telescopic rod (10) fixedly connected to the sleeve (9) and a driving device (11) connected to the bottom of the telescopic rod (10).

3. The connection device for online detection of a safety valve according to claim 1, characterized in that: The mounting plate (2) has a mounting groove in the middle, a through hole is provided at the center of the mounting groove, and the through hole is connected to the vertical pipe (1). The mounting flange (1301) at the bottom of the safety valve (13) is clamped in the mounting groove, and the pressing block (4) is pressed above the mounting flange (1301).

4. The connection device for online detection of a safety valve according to claim 3, characterized in that: A coaxially arranged reducing ring (3) is sleeved inside the mounting groove, the inner diameter of the reducing ring (3) is the same as the outer diameter of the mounting flange (1301), and the reducing ring (3) is sleeved outside the mounting flange (1301).

5. The connection device for online detection of a safety valve according to claim 4, characterized in that: A plurality of positioning grooves (202) are concavely arranged on the inner wall of the installation groove, and a clamping block (301) is convexly arranged on the outer circumferential surface of the diameter reducing ring (3), and the clamping block (301) is plugged into the positioning groove (202).

6. The connection device for online detection of a safety valve according to any one of claims 1 to 5, characterized in that: The rotating shaft (8) is rotatably connected to the vertical tube 1 via a rotating shaft bracket (101).

7. The connection device for online detection of a safety valve according to any one of claims 1 to 5, characterized in that: The inner hole of the sleeve (9) is a waist-shaped hole, and the cross section of the arc-shaped rod (7) is circular.

8. The connection device for online detection of a safety valve according to any one of claims 1 to 5, characterized in that: The pressing block (4) is in the shape of an arc-shaped plate.

9. The connection device for online detection of a safety valve according to any one of claims 1 to 5, characterized in that: The arc rod (7) has an arc of 180° and is arranged in a semicircle.

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