CN113427102A

CN113427102A - Vacuum brazing clamp for three-way connection of hexagonal corrugated plates

Info

Publication number: CN113427102A
Application number: CN202110801296.7A
Authority: CN
Inventors: 王程成; 兰新杰; 康路路
Original assignee: Xian Yuanhang Vacuum Brazing Technology Co Ltd
Current assignee: Xian Yuanhang Vacuum Brazing Technology Co Ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-09-24
Anticipated expiration: 2041-07-15
Also published as: CN113427102B

Abstract

The invention discloses a vacuum brazing clamp for three-way connection of hexagonal corrugated plates, which comprises a pressing plate for pressing and covering the outer side of each clamping plate of a three-way joint body; lantern rings are sleeved on the outer sides of the end parts of the three pressing plates, and each lantern ring is provided with a plurality of through holes; the same screw rod penetrates through the through holes at the corresponding positions on the two lantern rings, and two ends of each screw rod are provided with locking screw caps; an insert used for compressing a blocking plate of the three-way connector body is arranged between the inner peripheral surfaces of the lantern rings, a threaded hole is formed in the middle of the insert, and a compression screw is installed in the internal thread of the threaded hole; according to the invention, the outer side of each clamping plate is pressed by the pressing plate, the end part of the pressing plate is fixed by the lantern ring, and when the lantern ring is sleeved in the end part of the pressing plate, each pressing plate can uniformly apply pressing force to the corresponding clamping plate, so that the clamping plate is ensured to be clamped with the trapezoidal corrugated plate in the clamping plate.

Description

Vacuum brazing clamp for three-way connection of hexagonal corrugated plates

Technical Field

The invention belongs to the technical field of vacuum brazing clamps, and particularly relates to a vacuum brazing clamp connected with a hexagonal corrugated plate in a three-way mode.

Background

The trapezoidal corrugated plate sandwich structure is a composite plate with an inner cloth cooling flow channel, namely a heat exchange sandwich plate structure, which is made by firmly welding two thin panels on two sides of a thick corrugated core material by adopting a VB welding technology. As shown in fig. 1, three trapezoidal corrugated plate sandwich structures 10 are connected by a same three-way joint body 20 to form a trapezoidal corrugated plate sandwich structure assembly. The structure of the three-way joint body 20 is shown in fig. 2 and comprises three clamping plates 21 and a blocking plate 22 at the end of the clamping plate 21.

The trapezoidal corrugated plate interlayer structure assembly is made of copper alloy materials, the wall thickness is very thin, and the assembly is extremely easy to deform in the vacuum brazing process, so that the seam is too large, and the quality of a brazing seam is influenced.

Disclosure of Invention

The invention aims to provide a vacuum brazing clamp for three-way connection of a hexagonal corrugated plate, which applies a certain pretightening force to a three-way connector body before vacuum brazing, eliminates an assembly gap and ensures that the three-way connector body is tightly attached to a sandwich structure of a trapezoidal corrugated plate.

The invention adopts the following technical scheme: a vacuum brazing clamp for three-way connection of hexagonal corrugated plates comprises a pressing plate for pressing and covering the outer side of each clamping plate of a three-way joint body;

lantern rings are sleeved on the outer sides of the end parts of the three pressing plates, and each lantern ring is provided with a plurality of through holes;

the same screw rod penetrates through the through holes at the corresponding positions on the two lantern rings, and two ends of each screw rod are provided with locking screw caps;

an insert used for compressing a blocking plate of the three-way connector body is arranged between the inner circumferential surfaces of the lantern rings, a threaded hole is formed in the middle of the insert, and a compression screw is installed in the inner thread of the threaded hole.

Furthermore, the inner side of the pressing plate is provided with a pressing cambered surface, and the radian of the pressing cambered surface is consistent with that of the outer side surface of the clamping plate.

Further, the thickness of the outer side of the pressing plate is uniformly reduced from the middle part to the two end parts.

Further, the inner peripheral surface of the collar, along the middle portion of the pressure strip towards the end portion, becomes smaller in diameter uniformly.

Furthermore, the inner peripheral surface of the lantern ring is provided with a plurality of mounting grooves extending towards the outer peripheral surface of the lantern ring, and the mounting grooves are used for mounting the insert blocks.

Further, insert the star type spare for integrated into one piece, and the quantity of mounting groove is three, and the one end of every riser is installed respectively in a mounting groove, and the other end of every riser all links together.

The invention has the beneficial effects that: according to the invention, the outer side of each clamping plate is pressed by the pressing plate, the end part of the pressing plate is fixed by the sleeve ring, when the sleeve ring is sleeved in the end part of the pressing plate, each pressing plate can uniformly apply pressing force to the corresponding clamping plate, so that the clamping plate is ensured to be clamped with the trapezoidal corrugated plate in the clamping plate, the problem of overlarge vacuum brazing gap caused by the deformation of the tee joint body in the vacuum brazing process is avoided, and the successful welding probability can be improved.

Drawings

FIG. 1 is a schematic diagram of a prior art connection of three adjacent trapezoidal corrugated plate sandwich structures;

FIG. 2 is a schematic structural view of a prior art three-way fitting body;

FIG. 3 is a schematic structural diagram of a vacuum brazing fixture for three-way connection of hexagonal corrugated plates according to an embodiment of the present invention;

FIG. 4 is a schematic view of an end structure of a vacuum brazing jig according to an embodiment of the present invention;

FIG. 5 is a schematic side view of a pressing plate according to an embodiment of the present invention;

fig. 6 is a side view of the collar in this embodiment.

Wherein: 10. a trapezoidal corrugated plate sandwich structure;

20. a three-way joint body; 21. a splint; 22. a blocking plate;

30. a collar; 31. a through hole; 32. mounting grooves;

40. a compression plate; 41. pressing the cambered surface;

50. an insert;

60. a screw;

70. and (5) locking a nut.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The invention discloses a vacuum brazing clamp for three-way connection of hexagonal corrugated plates, which comprises a pressing plate 40, a clamping plate and a brazing clamp, wherein the pressing plate 40 is used for pressing and covering the outer side of each clamping plate 21 of a three-way joint body 20; the outer sides of the end parts of the three pressing plates 40 are sleeved with lantern rings 30, and each lantern ring 30 is provided with a plurality of through holes 31; the same screw rod 60 penetrates through the through holes 31 at the corresponding positions on the two lantern rings 30, and the two ends of each screw rod 60 are provided with locking screw caps 70; an insert 50 for compressing the blocking plate 22 of the three-way joint body 20 is arranged between the inner peripheral surfaces of the lantern rings 30, a threaded hole is formed in the middle of the insert 50, and a compression screw is installed in the threaded hole.

According to the invention, the outer side of each clamping plate is pressed by the pressing plate, the end part of the pressing plate is fixed by the sleeve ring, when the sleeve ring is sleeved in the end part of the pressing plate, each pressing plate can uniformly apply pressing force to the corresponding clamping plate, so that the clamping plate is ensured to be clamped with the trapezoidal corrugated plate in the clamping plate, the problem of overlarge vacuum brazing gap caused by the deformation of the tee joint body in the vacuum brazing process is avoided, and the successful welding probability can be improved.

Specifically, the pressing plate 40 is a long strip plate, and for better fitting, the inner side has a pressing arc surface 41, and the pressing arc surface 41 is in accordance with the outer side surface of the clamping plate 21. Moreover, two planes matched with the clamping plate 21 are respectively arranged on two sides of the pressing arc surface 21, so that the pressing arc surface can be completely attached to the outer side surface of the clamping plate 21, and the three-way joint body 20 and the trapezoidal corrugated plate sandwich structure 10 are uniformly and completely attached to each other.

In addition, in the present embodiment, the outer side of the pressing plate 40 becomes smaller in thickness from the middle portion toward both end portions. The diameter of the inner peripheral surface of the collar 30 in the direction from the center to the end of the pressure plate 40 is uniformly reduced. Through mutually supporting of the lateral surface of the pressure strip 40 and the medial surface of the lantern ring 30, when the lantern ring 30 is installed, the stress is slowly increased on the peripheries of the three pressure strips 40, and the pressure is prevented from being too fast, so that the three-way joint body 20 and the trapezoidal corrugated plate sandwich structure 10 are prevented from being deformed under pressure.

In addition, in order to press the blocking plate of the three-way coupling body 20, a plurality of mounting grooves 32 extending to the outer peripheral surface thereof are provided on the inner peripheral surface of the collar 30, and the mounting grooves 32 are used for mounting the insert 50. By arranging the insert 50, the insert 50 and the collar 30 are fixed into a whole, and then support is provided for the compression screw.

As a specific implementation form, the insert 50 is an integrally formed star-shaped member, specifically, the integrally formed star-shaped member is formed by fixedly connecting three integrally formed risers, the number of the mounting grooves 32 is three, one end of each riser is respectively mounted in one mounting groove 32, and the other end of each riser is connected together.

The use process of the invention is as follows:

insert trapezoidal buckled plate sandwich structure 10 back in the slot of three way connection body 20, compress tightly the cambered surface 41 that compresses tightly of pressure strip 40 to splint 21 lateral surface, at this moment, hold up three clamp plate 21, overlap two lantern rings 30 respectively in the both sides of pressure strip 40, progressively cover tightly, then penetrate through-hole 31 on the screw rod 60 by a lantern ring 30, pass through-hole 31 on another lantern ring 30 and wear out, screw up lock nut 70 at the both ends of screw rod 60 (being the outside of two lantern rings 30), until reaching the locking state of whole anchor clamps. And after the vacuum brazing is finished, reversely executing the steps, and finishing the disassembling process.

Claims

1. The vacuum brazing clamp for the three-way connection of the hexagonal corrugated plates is characterized by comprising a pressing plate (40) which is used for pressing and covering the outer side of each clamping plate (21) of a three-way joint body (20);

lantern rings (30) are sleeved on the outer sides of the end parts of the three pressing plates (40), and a plurality of through holes (31) are formed in each lantern ring (30);

the through holes (31) at corresponding positions on the two lantern rings (30) are provided with the same screw rod (60) in a penetrating way, and two ends of each screw rod (60) are provided with locking screw caps (70);

an insert (50) used for pressing a blocking plate (22) of the three-way joint body (20) is arranged between the inner circumferential surfaces of the lantern rings (30), a threaded hole is formed in the middle of the insert (50), and a pressing screw is installed in the threaded hole.

2. The vacuum brazing clamp for the hexagonal corrugated plate tee joint according to claim 1, wherein the inside of the compression plate (40) is provided with compression cambered surfaces (41), and the compression cambered surfaces (41) are in accordance with the radian of the outer side surface of the clamping plate (21).

3. The vacuum brazing jig for the hexagonal corrugated plate tee coupling according to claim 2, wherein the outer side of the compression plate (40) is uniformly reduced in thickness from the middle portion to both end portions.

4. A vacuum brazing jig for hexagonal corrugated plate tee coupling according to claim 2 or 3, wherein the diameter of the inner circumferential surface of said collar (30) is uniformly reduced along the middle portion of said compression plate (40) toward the end portion.

5. A vacuum brazing jig for three-way connection of hexagonal corrugated plates according to claim 4, wherein a plurality of mounting grooves (32) extending to the outer peripheral surface of the collar (30) are formed on the inner peripheral surface of the collar, and the mounting grooves (32) are used for mounting the insert (50).

6. The vacuum brazing jig for the hexagonal corrugated plate tee coupling of claim 5, wherein the insert (50) is an integrally formed star-shaped member, the number of the mounting grooves (32) is three, one end of each of the risers is mounted in one of the mounting grooves (32), and the other end of each of the risers is connected together.