Leak detection tool for brazing plate type heat exchanger
By designing a leak detection fixture with adaptive clamping and sealing connections, the problem of diverse plate specifications and joint extension dimensions of brazed plate heat exchangers was solved, thereby improving leak detection efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-03-20
AI Technical Summary
Existing leak detection fixtures for brazed plate heat exchangers cannot adapt to diverse plate types, plate numbers, and joint extension dimensions, resulting in low leak detection efficiency and high costs.
A leak detection fixture comprising a rectangular box, a top clamping bolt, and a sealing inspection joint was designed. By adjusting the position of the movable plate and bolt holes, adaptive clamping and sealing connections can be achieved for different plate types, specifications, number of plates, and pipe extension lengths.
It enables efficient leak detection of different brazed plate heat exchangers, reduces costs, and improves leak detection efficiency.
Smart Images
Figure CN224019221U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to brazing plate heat exchanger technical field, concretely relates to a brazing plate heat exchanger leak detection tool. BACKGROUND
[0002] Brazing plate heat exchanger needs to carry out some leak detection test after production, for example water pressure detection, air pressure detection, helium detection, due to the diversification of the version type specification of brazing plate heat exchanger, the height dimension of the plate group perpendicular to the plate, the extension dimension of the joint, can only be checked by making a lot of different leak detection tools and sealed inspection joints, so that the efficiency is very low, and the cost is higher, and the present urgently needs a leak detection tool that can realize the inspection of multiple specifications of heat exchanger. SUMMARY
[0003] In view of this, the utility model discloses a brazing plate heat exchanger leak detection tool, which is used to satisfy different brazing plate heat exchanger version type specifications, different plate numbers of the same version type specification and different pipe extension length leak detection tests, so as to overcome the deficiencies of the prior art.
[0004] The utility model provides a brazing plate heat exchanger leak detection tool, which comprises a rectangular box body with an open upper end composed of a rear web, two side plates, a front movable plate and a bottom plate, and a top holding clamp bolt installed on the rectangular box body, a plurality of guide blocks arranged along the length of the bottom plate are provided on the bottom plate, a plurality of grooves for clamping the front movable plate are formed in the two side plates, a plurality of tapped bolt holes are provided on the rear web and the front movable plate, clamping edges for clamping the grooves are provided on the two sides of the front movable plate, a limiting groove corresponding to the position of the guide block is provided at the bottom of the front movable plate, the brazing plate heat exchanger to be tested is placed in the rectangular box body, two sets of sealed inspection joints are arranged in the rectangular box body and located on the brazing plate heat exchanger, the front end connecting ports of the two sets of sealed inspection joints are connected to the interfaces of the heat exchange chambers of the brazing plate heat exchanger, and the top holding clamp bolt is screwed into the tapped bolt holes and holds the rear holding end of the sealed inspection joint, so that the front end connecting ports of the sealed inspection joints are sealingly connected to the interfaces of the brazing plate heat exchanger.
[0005] As a preferred embodiment of the utility model, at least one sealed inspection joint in one of the two sets of sealed inspection joints is provided with a check inlet on the side wall for connecting a check device, and the check inlet is in communication with the interface of the brazing plate heat exchanger through the front end connecting port.
[0006] As a preferred embodiment of the utility model, the tapped bolt holes provided on the rear web and the front movable plate are symmetrically arranged.
[0007] As a preferred embodiment of the utility model, a sealing washer is installed on the front end connecting port of the sealed inspection joint.
[0008] As the preferred of the utility model, the interface of the two heat exchange chambers of the brazing plate heat exchanger is communicated with the inspection pipeline of the inspection equipment through the corresponding number of sealing inspection joints, wherein the inspection equipment includes water pressure detection, air pressure detection and helium detection, and the inspection inlet of the sealing inspection joint is used for quickly connecting the pipeline communication of the water pressure detection, air pressure detection and helium detection.
[0009] As the preferred of the utility model, the bottom plate is provided with a baffle at the side edge position away from the rear side web, and the two sides of the baffle are fixedly connected with the two side plates.
[0010] As the preferred of the utility model, the two groups of sealing inspection joints include four sealing inspection joints.
[0011] As the preferred of the utility model, the front end connecting port of one group of sealing inspection joints is connected with the heat exchange chamber interface on one side of the brazing plate heat exchanger, and the front end connecting port of the other group of two sealing inspection joints is connected with the heat exchange chamber interface on the other side of the brazing plate heat exchanger, wherein the rear top holding end of the group of two sealing inspection joints close to the rear side web corresponds to the tapping bolt hole position on the rear side web, and the rear top holding end of the group of two sealing inspection joints close to the front side movable plate corresponds to the tapping bolt hole position on the front side movable plate.
[0012] The utility model has the advantages of:
[0013] 1. The leak detection device is suitable for different brazing plate heat exchanger versions, and the tapping bolt holes corresponding to the different pipe connection center distances of the existing brazing plate heat exchanger are arranged on the rear side web and the front side movable plate, the sealing inspection joint is sealed with the brazing plate heat exchanger cavity interface by rotating and tightening the top holding clamping bolt to extrude the sealing inspection joint.
[0014] 2. The leak detection device is suitable for different plate numbers of the same version of the brazing plate heat exchanger, that is, the different vertical direction heights of the brazing plate heat exchanger plates, the grooves matched with the front side movable plate are arranged on the two side plates, and the clamping and sealing of different plate group height dimensions are realized by adjusting the position of the front side movable plate.
[0015] 3. The leak detection device is suitable for different joint opening positions, and the tapping bolt holes are arranged on the rear side web and the front side movable plate according to the existing brazing plate heat exchanger opening positions, the clamping and sealing of the opening positions are realized, and the equipment is fixed by the top holding clamping bolt for the non-opening positions, so that the clamping and subsequent sealing of the whole equipment are realized.
[0016] 4. The leak detection device of the utility model is for different pipe extension lengths, and the clamping and sealing of different pipe extension lengths is adjusted through the jacking clamping bolt. BRIEF DESCRIPTION OF DRAWINGS
[0017] Fig. 1 It is a whole structure schematic view of the utility model of a brazing plate heat exchanger leak detection tool.
[0018] Fig. 2 It is a sealing inspection joint schematic view of the utility model of a brazing plate heat exchanger leak detection tool with an inspection inlet.
[0019] Fig. 3 It is a sealing inspection joint schematic view of the utility model of a brazing plate heat exchanger leak detection tool without an inspection inlet.
[0020] Reference signs: rear side web plate 1, both sides side plate 2, front side movable plate 3, bottom plate 4, jacking clamping bolt 5, guide block 6, groove 7, tapping bolt hole 8, brazing plate heat exchanger 9, sealing inspection joint 101, inspection inlet 11, baffle 12. DETAILED DESCRIPTION
[0021] Reference Figs. 1-3The embodiment provides a brazing plate heat exchanger leak detection tool, which comprises a rectangular box with an open upper end composed of a rear web plate 1, two side plates 2, a front movable plate 3 and a bottom plate 4, and a top holding clamping bolt 5 installed on the rectangular box, a group of two guide blocks 6 arranged along the length of the bottom plate 4 are arranged on the bottom plate 4, five grooves 7 for clamping the front movable plate 3 are arranged on each of the two side plates 2, a plurality of tapped bolt holes 8 are arranged on the rear web plate 1 and the front movable plate 3, clamping edges for clamping the grooves 7 are arranged on the two sides of the front movable plate 3, limit grooves corresponding to the positions of the guide blocks 6 are arranged on the bottom of the front movable plate 3, a brazing plate heat exchanger 9 to be detected is placed in the rectangular box, two groups of four sealing check joints 101 are arranged in the rectangular box and located on the two sides of the brazing plate heat exchanger 9, the front end connecting ports of one group of two sealing check joints 101 are connected to the interfaces of the heat exchange chambers on one side of the brazing plate heat exchanger 9, the front end connecting ports of the other group of two sealing check joints 101 are connected to the interfaces of the heat exchange chambers on the other side of the brazing plate heat exchanger 9, the rear top holding ends of the one group of two sealing check joints 101 close to the rear web plate 1 correspond to the positions of the tapped bolt holes 8 on the rear web plate 1, the rear top holding ends of the other group of two sealing check joints 101 close to the front movable plate 3 correspond to the positions of the tapped bolt holes 8 on the front movable plate 3, the top holding clamping bolt 5 is screwed into the tapped bolt holes 8 and holds the rear top holding ends of the sealing check joints 101, so that the front end connecting ports of the sealing check joints 101 are sealingly connected to the interfaces, a check inlet port 11 for connecting a check device is arranged on the side wall of one of each group of sealing check joints 101, and the check inlet port 11 is in communication with the inlet interfaces of the brazing plate heat exchanger 9 through the front end connecting ports. The tapped bolt holes arranged on the rear web plate 1 and the front movable plate 3 are symmetrically arranged. A sealing gasket is arranged on the front end connecting port of the sealing check joint 101. A baffle 12 is arranged on the edge position of the bottom plate 4 away from the rear web plate 1, and the baffle 12 is fixedly connected to the two side plates 2.
[0022] Further, the brazing plate heat exchanger 9 in the embodiment is composed of two heat exchange chambers, the two heat exchange chambers realize heat exchange between media, the interfaces of the two heat exchange chambers of the brazing plate heat exchanger 9 are in communication with the check pipelines of a check device through corresponding sealing check joints, wherein the check device comprises water pressure detection, gas pressure detection and helium detection, wherein the check inlet ports on the sealing check joints are used for rapid butt joint pipeline communication of the water pressure detection, the gas pressure detection and the helium detection, and wherein the sealing check joints without the check inlet ports are used for gas tightness leak detection.
[0023] Working principle: by placing the brazing plate heat exchanger 9 in the rectangular box, according to the height size of the plate group of the brazing plate heat exchanger 9 and the joint opening position, adjust the position of the front movable plate 3, install the front end connector of the sealing inspection joint 101 on the interface of the brazing plate heat exchanger 9, the rear top holding end of the sealing inspection joint 101 corresponds to the position of the tapping screw hole 8, and the front end connector of the sealing inspection joint 101 is sealed and connected with the interface of the brazing plate heat exchanger 9 by screwing the top holding clamping bolt 5 in the tapping screw hole 8 and extruding the sealing inspection joint 101.
Claims
1. A leak detection fixture for a brazed plate heat exchanger, characterized in that, include: A rectangular box with an open top, consisting of a rear web, two side plates, a front movable plate, and a bottom plate, and top-holding clamping bolts installed on the rectangular box. The bottom plate is provided with a set of guide blocks arranged along the length of the bottom plate. Multiple grooves for engaging the front movable plate are opened on the two side plates. Multiple tapping bolt holes are provided on the rear web and the front movable plate. The two sides of the front movable plate are provided with engaging edges that engage with the grooves. A limit groove is provided at the bottom of the front movable plate corresponding to the position of the guide blocks. The brazed plate heat exchanger to be leak-tested is placed in the rectangular box. Two sets of sealing inspection joints are set in the rectangular box and located on the brazed plate heat exchanger. The front end connection ports of the two sets of sealing inspection joints are connected to the interface of the heat exchange chamber of the brazed plate heat exchanger. The top-holding clamping bolts are screwed into the tapping bolt holes and hold the rear holding end of the sealing inspection joint, so that the front end connection port of the sealing inspection joint is sealed to the interface of the brazed plate heat exchanger.
2. The leak detection fixture for a brazed plate heat exchanger according to claim 1, characterized in that, At least one of the sealing inspection joints in one group has an inspection port for connecting inspection equipment on its side wall. The inspection port is connected to the interface of the brazed plate heat exchanger through a front-end connection port.
3. The leak detection fixture for a brazed plate heat exchanger according to claim 1, characterized in that, The tapping bolt holes on the rear web and the front movable plate are symmetrically arranged.
4. The leak detection fixture for a brazed plate heat exchanger according to claim 1, characterized in that, A sealing gasket is installed on the front end of the sealing inspection connector.
5. The leak detection fixture for a brazed plate heat exchanger according to claim 1, characterized in that, The interfaces of the two heat exchange chambers of the brazed plate heat exchanger are connected to the inspection pipelines of the inspection equipment through a corresponding number of sealed inspection joints. The inspection equipment includes water pressure testing, air pressure testing, and helium testing. The inspection inlets on the sealed inspection joints are used for quick connection to the pipelines for water pressure testing, air pressure testing, and helium testing.
6. The leak detection fixture for a brazed plate heat exchanger according to claim 1, characterized in that, A baffle is provided on the edge of the bottom plate away from the rear web plate, and the two sides of the baffle are fixedly connected to the two side plates.
7. The leak detection fixture for a brazed plate heat exchanger according to claim 1, characterized in that, The two sets of seal inspection connectors include four seal inspection connectors.
8. The leak detection fixture for a brazed plate heat exchanger according to claim 1, characterized in that, One set of sealing inspection connectors has its front end connected to the heat exchange chamber interface on one side of the brazed plate heat exchanger, and another set of two sealing inspection connectors has its front end connected to the heat exchange chamber interface on the other side of the brazed plate heat exchanger. The rear support end of the set of two sealing inspection connectors near the rear web plate corresponds to the position of the tapping bolt hole on the rear web plate, and the rear support end of the set of two sealing inspection connectors near the front movable plate corresponds to the position of the tapping bolt hole on the front movable plate.