Flexible positioning device for helium mass spectrum leak detection test of brazed plate heat exchanger

Abstract

The utility model belongs to the technical field of brazing plate heat exchanger positioning tools, and particularly discloses a flexible positioning device for a brazing plate heat exchanger helium mass spectrum leak detection test, which comprises a tool substrate, two limiting plates and a positioning block, the two limiting plates are symmetrically fixed above the tool substrate, and the positioning block is arranged on the tool substrate. Positioning blocks are arranged on the opposite surfaces of the two limiting plates, a convex block is arranged at the end part of each limiting plate, a bayonet is formed at the corner of each convex block and the corresponding limiting plate, a sliding groove is formed in each limiting plate, a sliding block corresponding to each positioning block is connected in each sliding groove in a sliding manner, a fixing groove is formed in each positioning block, a bolt is arranged in each fixing groove, and a screw hole is formed in each sliding block; bolts penetrate through the fixing grooves and are in threaded connection in the screw holes to lock the positioning blocks. The brazing plate type heat exchanger is placed at the bayonet, so that the brazing plate type heat exchanger is located between the convex block and the corresponding positioning block, and after the positioning block is moved to slide and adjusted to a proper position, the positioning block is locked and fixed through the bolt.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning tooling for brazed plate heat exchangers, in particular to a flexible positioning device for helium mass spectrometry leak detection testing of brazed plate heat exchangers. Background Art

[0002] Brazed plate heat exchanger is a heat exchanger made of stainless steel sheets pressed into heat exchange plates with a certain corrugated shape, then stacked and brazed in a vacuum brazing furnace. Cold and hot fluid flow channels are formed between the plates, and the cold and hot fluids flow through the channels on both sides of the corrugated plate and exchange heat through the corrugated plate. It has the characteristics of compact structure, small footprint, high heat transfer efficiency, strong operational flexibility, wide application range, small heat loss, easy installation and cleaning, etc.

[0003] Different models of products correspond to the cross-sectional channels, external dimensions, pipe dimensions, number of plates, etc. This device is a positioning fixture used for helium mass spectrometry leak testing of heat exchangers. The same type of plate heat exchanger can be divided into many models due to the different number of plates. If each heat exchanger with a certain number of plates corresponds to a positioning fixture during the helium test, the number of positioning fixtures required will be very large, which is not only troublesome to change, but also inconvenient for tooling management. The factory conducts online rapid testing, hoping that the time to switch between different models of products can be as short as possible under the premise of ensuring stability. Utility Model Content

[0004] The utility model aims to provide a flexible positioning device for helium mass spectrometer leak detection test of brazed plate heat exchangers, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flexible positioning device for helium mass spectrometry leak detection test of brazed plate heat exchanger, comprising a tooling base plate, a limit plate and a positioning block, wherein two limit plates are provided, the two limit plates are symmetrically fixed above the tooling base plate, and the opposite surfaces of the two limit plates are provided with positioning blocks, the end of each limit plate is provided with a protrusion, the protrusion and the corner of the limit plate form a bayonet, and a slide groove is provided on the limit plate, a slider corresponding to the positioning block is slidably connected in the slide groove, a through fixing groove is provided on the positioning block, a bolt is provided in the fixing groove, a screw hole is provided on the slider, the bolt passes through the fixing groove and is threadedly connected in the screw hole to lock the positioning block; by placing the brazed plate heat exchanger at the bayonet, the brazed plate heat exchanger is located between the protrusion and the corresponding positioning block, the positioning block is moved to slide, and after adjusting to a suitable position, the positioning block is locked and fixed by the bolt.

[0006] Preferably, the limiting plate is flush with the side edge of the tooling base plate.

[0007] Preferably, the limiting plate and the positioning block are integrally formed.

[0008] Preferably, a plurality of mounting holes are evenly arranged in the middle of the tooling base plate, and the arranged mounting holes are used to fix the device at other specific locations.

[0009] Preferably, the slide groove and the limiting plate are parallel to each other.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model arranges a protrusion on the limit plate, after the brazed plate heat exchanger is placed between the positioning block and the protrusion, the positioning block is moved, and after it is adjusted to a suitable position, it can be fixed by a locking screw to adapt to products of different thicknesses. In addition, the device has a small number of parts, a simple structure, convenient maintenance, and strong versatility, which effectively improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the utility model above;

[0014] Figure 3 It is a side structural schematic diagram of the utility model.

[0015] In the figure: 1, tooling base plate; 101, mounting hole; 2, limit plate; 201, bump; 202, bayonet; 203, slide groove; 3, positioning block; 301, fixing groove; 4, slider; 5, bolt. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] See also Figure 1-3 The utility model provides a technical solution: a flexible positioning device for helium mass spectrometer leak detection test of brazed plate heat exchanger, comprising a tooling base plate 1, a limit plate 2 and a positioning block 3, wherein two limit plates 2 are provided, the two limit plates 2 are symmetrically fixed above the tooling base plate 1, and the opposite surfaces of the two limit plates 2 are provided with positioning blocks 3, each of the end portions of the limit plates 2 is provided with a convex block 201, the corners of the convex block 201 and the limit plate 2 form a bayonet 202, and the limit plate 2 is provided with a slide groove 203, the slide groove 203 The inner sliding connection is provided with a slider 4 corresponding to the positioning block 3, the positioning block 3 is provided with a through fixing groove 301, a bolt 5 is arranged in the fixing groove 301, the slider 4 is provided with a screw hole, the bolt 5 passes through the fixing groove 301 and is threadedly connected in the screw hole to lock the positioning block 3; by placing the brazed plate heat exchanger at the bayonet 202, the brazed plate heat exchanger is placed between the protrusion 201 and the corresponding positioning block 3, the positioning block 3 is moved to slide, and after adjusting to a suitable position, the positioning block 3 is locked and fixed by the bolt 5.

[0020] Furthermore, the limiting plate 2 is flush with the side of the tooling base plate 1 .

[0021] Furthermore, the limiting plate 2 and the positioning block 3 are integrally formed.

[0022] Furthermore, a plurality of mounting holes 101 are evenly arranged in the middle of the tooling base plate 1 , and the arranged mounting holes 101 are used to fix the device at other specific locations.

[0023] Furthermore, the slide groove 203 and the limiting plate 2 are parallel to each other.

[0024] Working principle: When in use, place the brazed plate heat exchanger at the bayonet 202, so that the brazing plate is placed on the tooling base plate 1, so that the brazed plate heat exchanger is between the protrusion 201 and the corresponding positioning block 3, and the brazed plate heat exchanger is attached to the limit plate 2 and the protrusion 201 of the limit plate 2, and then move the positioning block 3, so that the positioning block 3 drives the slider 4 to slide in the slide groove 203 through the bolt 5, and after adjusting to the appropriate position, the positioning block 3 is attached to the brazed plate heat exchanger, and then the bolt 5 is rotated so that the bolt 5 tightens the positioning block 3, thereby locking the positioning block 3 and completing the installation of the brazed plate heat exchanger. When removing, rotate the bolt 5 in the opposite direction to loosen the positioning block 3, and then remove the positioning block 3 from the brazed plate heat exchanger, and then the brazed plate heat exchanger can be unfixed. The operation is simple and easy to understand.

[0025] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible positioning device for helium mass spectrometer leak testing of brazed plate heat exchangers, characterized in that: The utility model comprises a tooling base plate (1), a limiting plate (2) and a positioning block (3), wherein two limiting plates (2) are provided, the two limiting plates (2) are symmetrically fixed above the tooling base plate (1), and the opposite surfaces of the two limiting plates (2) are provided with positioning blocks (3), the end of each limiting plate (2) is provided with a protrusion (201), and a bayonet (202) is formed between the protrusion (201) and the corner of the limiting plate (2), and a sliding groove (203) is provided on the limiting plate (2), and a sliding block (4) corresponding to the positioning block (3) is slidably connected in the sliding groove (203), and a through fixing groove (301) is provided on the positioning block (3), and a bolt (5) is provided in the fixing groove (301), and a screw hole is provided on the sliding block (4), and the bolt (5) passes through the fixing groove (301) and is threadedly connected in the screw hole to lock the positioning block (3).

2. The flexible positioning device for helium mass spectrometer leak detection test of brazed plate heat exchanger according to claim 1, characterized in that: The limiting plate (2) is flush with the side edge of the tooling base plate (1).

3. The flexible positioning device for helium mass spectrometer leak detection test of brazed plate heat exchanger according to claim 1, characterized in that: The limiting plate (2) and the positioning block (3) are integrally formed.

4. The flexible positioning device for helium mass spectrometer leak detection test of brazed plate heat exchanger according to claim 1, characterized in that: A plurality of mounting holes (101) are evenly arranged in the middle of the tooling base plate (1).

5. The flexible positioning device for helium mass spectrometer leak detection test of brazed plate heat exchanger according to claim 1, characterized in that: The sliding groove (203) and the limiting plate (2) are parallel to each other.

Images