Leak detection test sealing tool located between header maintenance position and header upper sleeve
By designing a sealing fixture between the header maintenance area and the upper casing of the header, and utilizing a combination of an I-shaped splint and a sealing ring, the sealing problem of the serpentine tube high-pressure heat exchanger was solved, achieving a simple and economical sealing effect.
Patent Information
- Application Number
- CN202422949669.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-29
AI Technical Summary
The conventional structural hydraulic sealing fixture cannot meet the gap leakage test requirements of the serpentine tube high-pressure heat exchanger header inspection hole and the header upper casing.
A leak test sealing fixture located between the header maintenance area and the upper casing of the header was designed. An I-shaped plywood was used to hook the ring groove on the inner wall of the header for positioning. Bolts were driven through the I-shaped plywood to tighten the pressure ring to support the sealing ring. The sealing ring was located between the pressure ring and the joint, filling the gap to form a seal.
The invention realizes a sealing effect which is simple and easy to process, reduces tooling manufacturing cost, and is easy to operate, and is suitable for leak detection test of serpentine tube high-pressure heat exchangers.
Smart Images
Figure CN223399221U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of leak detection test sealing tooling, in particular to a leak detection test sealing tooling located between a header maintenance location and an upper casing of the header. Background Art
[0002] The serpentine tube high-pressure heat exchanger is a relatively simple heat exchange device, commonly used in chemical, light, pharmaceutical, and other industrial production. It is a type of tubular heat exchanger, and its heat transfer surface is composed of serpentine tubes bent into a cylindrical or flat shape.
[0003] The header of the serpentine tube high-pressure heat exchanger is an important component for storing liquid. This part must not leak during operation, otherwise it will affect the heat exchange effect.
[0004] During a 0.5MPa leak test on the coiled tube high-pressure heater, the clearances between the header manhole and the header upper casing needed to be sealed. Due to the new product structure, conventional hydraulic sealing tooling could not meet the leak test requirements. Utility Model Content
[0005] The purpose of this utility model patent: This utility model is to solve the problem that the conventional structural water pressure sealing tooling cannot meet the gap leakage test requirements at the header inspection hole and the header upper casing. This utility model provides a leakage test sealing tooling located between the header inspection point and the header upper casing.
[0006] The purpose of the utility model is achieved as follows: a leak test sealing tool is located between the header maintenance place and the header upper casing, the header maintenance place is provided with a joint extending outward, the rear end inner wall of the header upper casing is connected to the front end of the joint, an I-shaped plywood, a pressure ring and a plurality of screws;
[0007] After the upper sleeve of the collecting box is connected to the joint, the I-beam plywood is a hollow tubular part, and the annular outer edge of one end of the I-beam plywood is inserted into the annular groove provided on the inner wall of the collecting box, and the annular outer edge of the other end of the I-beam plywood is located in front of the joint. The pressure ring is located between the annular outer edge of the other end of the I-beam plywood and the joint. Multiple screws are threadedly connected to the annular outer edge of the other end of the I-beam plywood, and multiple screws pass through the annular outer edge of the other end of the I-beam plywood and are tightened onto the pressure ring. A sealing ring is provided between the pressure ring and the joint.
[0008] Furthermore, the rear end of the pressure ring is inserted into the joint, and the front end of the pressure ring is located in front of the joint.
[0009] Furthermore, the sealing ring is located between the front end of the pressure ring and the front of the joint.
[0010] Furthermore, a groove is provided at the front end of the pressure ring.
[0011] Further, the I-shaped clamping plate includes a plurality of C-shaped clamping blocks;
[0012] A plurality of C-shaped clamping blocks are evenly distributed along the circumferential direction, gaps are left between adjacent C-shaped clamping blocks, and the plurality of C-shaped clamping blocks form a hollow cylindrical I-shaped clamping plate.
[0013] Furthermore, the I-shaped clamping plate includes twelve C-shaped clamping blocks.
[0014] Beneficial effects:
[0015] The sealing tool uses an I-shaped plywood to hook the ring groove on the inner wall of the product collection box to position the entire sealing tool axially. The I-shaped plywood is bolted into the compression ring to support the sealing ring. The sealing ring is located between the compression ring and the joint to fully fill the gap, thereby forming a seal. The sealing work of this solution is simple to make and easy to process, simple to install, and easy to operate. The light weight of the tool can reduce the tooling manufacturing cost, and it is easy to disassemble and reuse. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the leak test sealing tool located between the header maintenance area and the header upper casing;
[0017] Figure 2 It is a schematic diagram of an I-shaped plywood;
[0018] Figure 3 yes Figure 2 A side view schematic diagram of
[0019] Figure 4 is a schematic diagram of the sealing ring;
[0020] Figure 5 This is the left side view of the pressure plate.
[0021] In the picture:
[0022] 1. I-shaped splint; 2. Pressure ring; 3. Sealing ring; 4. Screw; 1-1. C-shaped clamp; 2-1. Groove. DETAILED DESCRIPTION
[0023] Specific embodiment 1: A leak test sealing tool is located between the header maintenance area and the header upper casing. The header maintenance area is provided with a joint extending outward, and the rear end inner wall of the header upper casing is connected to the front end of the joint. It is characterized by: an I-shaped clamp plate 1, a pressure ring 2 and a plurality of screws 4;
[0024] After the upper sleeve of the collecting box is connected to the joint, the I-beam plywood 1 is a hollow tubular member, the annular outer edge of one end of the I-beam plywood 1 is inserted into the annular groove provided on the inner wall of the collecting box, the annular outer edge of the other end of the I-beam plywood 1 is located in front of the joint, and the pressure ring 2 is located between the annular outer edge of the other end of the I-beam plywood 1 and the joint. A plurality of screws 4 are threadedly connected to the annular outer edge of the other end of the I-beam plywood 1, and the plurality of screws 4 pass through the annular outer edge of the other end of the I-beam plywood 1 and are tightened onto the pressure ring 2. A sealing ring 3 is provided between the pressure ring 2 and the joint.
[0025] In this embodiment: an I-shaped splint is used to hook the annular groove on the inner wall of the product collection box for positioning, so that the entire sealing tooling is axially fixed, and the I-shaped splint is bolted into the compression ring to press the sealing ring against the sealing ring. The sealing ring is located between the compression ring and the joint to fully fill the gap, thereby forming a seal.
[0026] Specific implementation method 2: A leak test sealing tool is located between the header maintenance position and the header upper casing, the rear end of the pressure ring 2 is inserted into the joint, and the front end of the pressure ring 2 is located in front of the joint.
[0027] In this embodiment, the rear end of the pressure ring is inserted into the joint, and the front end of the pressure ring is located in front of the joint.
[0028] Other implementations are the same as the first specific implementation.
[0029] Specific implementation method three: a leak test sealing tool located between the header maintenance position and the header upper casing, wherein the sealing ring 3 is located between the front end of the pressure ring 2 and the front of the joint.
[0030] In this embodiment, the sealing ring is located between the front end of the pressure ring and the front of the joint, fully filling the gap to form a seal.
[0031] Other implementations are the same as the second specific implementation.
[0032] Specific embodiment 4: A leak test sealing fixture is located between the header maintenance position and the header upper casing, and a groove 2-1 is provided at the front end of the pressure ring 2.
[0033] In this embodiment, a groove is provided at the front end of the pressure ring. After the bolt passes through the I-shaped splint, the bolt presses against the groove, and the groove is used to position the tightening screw.
[0034] Other implementations are the same as the first specific implementation.
[0035] Specific embodiment five: a leak test sealing fixture located between the header maintenance location and the header upper casing, wherein the I-shaped clamping plate 1 includes a plurality of C-shaped clamping blocks 1-1;
[0036] The plurality of C-shaped clamping blocks 1 - 1 are evenly distributed along the circumferential direction, with gaps left between adjacent C-shaped clamping blocks 1 - 1 . The plurality of C-shaped clamping blocks 1 - 1 form a hollow cylindrical I-shaped clamping plate 1 .
[0037] In this embodiment: the sealing tool uses an I-shaped clamp to hook the annular groove on the inner wall of the product collection box for positioning, so that the entire sealing tool is axially fixed. The I-shaped clamp is processed from the cylinder to the corresponding size and then cut into multiple C-shaped clamps. In this way, each C-shaped clamp is light in weight, simple to install and easy to operate.
[0038] Other implementations are the same as the first specific implementation.
[0039] Specific embodiment six: A leak test sealing fixture located between the header maintenance location and the header upper casing, wherein the I-shaped clamping plate 1 includes twelve C-shaped clamping blocks 1 - 1 .
[0040] In this embodiment, the I-shaped clamping plate is processed into corresponding sizes by the cylinder and then cut into 12 C-shaped clamping blocks. The C-shaped clamping blocks are light in weight and can reduce the manufacturing cost of new tooling.
[0041] Other implementations are the same as the fifth specific implementation.
[0042] Working principle: The sealing fixture uses an I-shaped plywood to hook the ring groove on the inner wall of the product header to position the entire sealing fixture axially. The I-shaped plywood is bolted into the compression ring to support the sealing ring. The sealing ring is located between the compression ring and the joint to fully fill the gap, thereby forming a seal. When conducting a product leak test, water is flushed in, and water does not leak between the rear end inner wall of the casing on the header and the joint.
Claims
1. A leak test sealing fixture is located between the header inspection area and the header upper casing. The header inspection area is provided with a joint extending outward, and the rear end inner wall of the header upper casing is connected to the front end of the joint. The features are: I-shaped clamp (1), a pressure ring (2) and a plurality of screws (4); After the upper sleeve of the header is connected to the joint, the I-shaped splint (1) is a hollow tubular member, the annular outer edge of one end of the I-shaped splint (1) is inserted into the annular groove provided on the inner wall of the header, the annular outer edge of the other end of the I-shaped splint (1) is located in front of the joint, the pressure ring (2) is located between the annular outer edge of the other end of the I-shaped splint (1) and the joint, a plurality of screws (4) are threadedly connected to the annular outer edge of the other end of the I-shaped splint (1), and the plurality of screws (4) pass through the annular outer edge of the other end of the I-shaped splint (1) and are tightened onto the pressure ring (2), and a sealing ring (3) is provided between the pressure ring (2) and the joint.
2. The leak test sealing tool located between the header maintenance position and the header upper casing according to claim 1 is characterized in that: The rear end of the pressure ring (2) is inserted into the joint, and the front end of the pressure ring (2) is placed in front of the joint.
3. The leak test sealing tool located between the header maintenance position and the header upper casing according to claim 2, characterized in that: The sealing ring (3) is located between the front end of the pressure ring (2) and the front of the joint.
4. The leak test sealing tool located between the header maintenance position and the header upper casing according to claim 1, characterized in that: The front end of the pressure ring (2) is provided with a groove (2-1).
5. The leak test sealing tool located between the header maintenance position and the header upper casing according to claim 1, characterized in that: The I-shaped clamp (1) comprises a plurality of C-shaped clamping blocks (1-1); A plurality of C-shaped clamping blocks (1-1) are evenly distributed along the circumferential direction, gaps are left between adjacent C-shaped clamping blocks (1-1), and the plurality of C-shaped clamping blocks (1-1) form a hollow cylindrical I-shaped clamping plate (1).
6. The leak test sealing tool located between the header maintenance position and the header upper casing according to claim 5, characterized in that: The I-shaped clamping plate (1) comprises twelve C-shaped clamping blocks (1-1).