Water cooling screen welding tooling

Abstract

The utility model discloses a water -cooled screen welding frock relates to welding frock technical field, including base, be equipped with chuck on the base, be equipped with locating mandrel and gantry on the base fixed mounting, be equipped with locating plate on locating mandrel fixed mounting, the both sides of gantry are equipped with lock block, the detection mechanism is equipped with in the upper end department of gantry, the detection mechanism includes the locating support fixed mounting on the gantry, the locating support is equipped with locating shaft and slides, the locating shaft lower extreme fixed mounting has crossbeam, the both ends fixed mounting of crossbeam have the butt -joint mouth, the butt -joint mouth is connected with detection pipe, detection pipe is connected with barometer, the intermediate position of gantry upper end is installed with pressurizing mechanism, the butt -joint mouth is equipped with rubber cover, and the locating shaft is equipped with spring, water -cooled screen welding frock, can detect the welding quality through the cooperation of detection mechanism and pressurizing mechanism.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically a welding fixture for a water-cooled screen. Background Technology

[0002] A water-cooled screen is a key cooling device installed on the inner wall of a high-temperature industrial furnace. Its core structure consists of a screen wall made of multiple sets of seamless steel or copper pipes through which cooling water flows. It forms a high-temperature protective barrier inside the furnace through water cooling.

[0003] In the prior art, the authorized announcement number CN223214203U discloses a water-cooled screen that is compatible with various guide tubes, including a guide tube, a water-cooled screen is provided inside the guide tube, connecting pipes are respectively provided on the left and right sides above the water-cooled screen, a first connection port is provided above the connecting pipe, a welding piece is provided outside the first connection port, a second connection port is provided outside the welding piece, and an inlet pipe and an outlet pipe are respectively provided above the second connection ports on the left and right sides of the water-cooled screen.

[0004] The inlet and outlet pipes of a water-cooled screen are typically fixedly connected using welding. These pipes are securely installed onto the cylindrical structure using specialized welding techniques. The quality of the welding directly determines the overall performance and service life of the water-cooled screen, with welding precision being particularly critical, affecting the sealing of the joints and structural strength. In actual welding operations, due to improper operation or inaccurate control of process parameters, welding defects such as incomplete welds often occur. This incomplete weld phenomenon leads to tiny gaps or incompletely fused areas at the pipe connections, causing cooling water leakage. Once leakage occurs, it not only affects the normal operation of the water-cooled screen but may also cause equipment failure, and in severe cases, may even require the entire system to be shut down for maintenance, adversely affecting production. Therefore, a welding fixture for water-cooled screens is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a water-cooled screen welding fixture to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a water-cooled screen welding fixture, comprising a base, a chuck on the base, a positioning mandrel and a gantry frame fixedly mounted on the base, a positioning plate fixedly mounted on the positioning mandrel, locking blocks on both sides of the gantry frame, a detection mechanism at the upper end of the gantry frame, the detection mechanism comprising positioning legs fixedly mounted on the gantry frame, a positioning shaft slidably mounted on the positioning legs, a crossbeam fixedly mounted at the lower end of the positioning shaft, connecting nozzles fixedly mounted at both ends of the crossbeam, a detection tube connected to the connecting nozzle, a pressure gauge connected to the detection tube, and a pressurization mechanism installed at the middle position of the upper end of the gantry frame.

[0007] Preferably, a rubber sleeve is fitted onto the docking nozzle, and a spring is fitted onto the positioning shaft.

[0008] Preferably, the positioning foot has a movable hole, and the positioning foot is slidably mounted on the positioning foot through the movable hole.

[0009] Preferably, the crossbeam is movably mounted below the positioning support foot via a positioning shaft, one end of the spring is connected to the positioning support foot, the other end of the spring is connected to the crossbeam, and the docking nozzle is movably mounted at the upper edge of the gantry frame via the crossbeam.

[0010] Preferably, the pressurizing mechanism includes a mounting plate fixedly installed on the gantry frame, a cylinder fixedly installed on the mounting plate, a cylinder body fixedly installed below the cylinder, a drive rod fixedly installed at the output end of the cylinder, a stop ring fixedly installed on the drive rod, a piston plate fixedly installed at the lower end of the drive rod, and the piston plate is slidably installed in the cylinder body, an air inlet is opened at the middle position of the bottom of the cylinder body, and an exhaust port is opened on both sides of the air inlet, and a one-way valve is installed in both the air inlet and the exhaust port.

[0011] Preferably, one end of the detection tube is connected to the docking nozzle, and the other end of the detection tube is connected to the cylinder block through the exhaust port.

[0012] Preferably, a through hole is provided in the middle of the crossbeam, and the drive rod passes through the crossbeam through the through hole.

[0013] Preferably, the cylinder is fixedly mounted on the gantry by a mounting plate, the piston plate is movably mounted in the cylinder body by a drive rod, a fixing bracket is provided at the middle position of the upper end of the gantry, and the cylinder body is fixed on the gantry by the fixing bracket.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this application, a piston plate can be driven by a cylinder to reciprocate up and down within the cylinder. When the piston plate moves upward, external gas enters the cylinder through the air inlet; when the piston plate moves downward, the gas inside the cylinder is forced into the welded water pipe, thereby increasing the air pressure inside the water pipe for airtightness testing.

[0016] 2. After the welding operation is completed in this application, the cylinder can be extended. After the cylinder extends, the spring will push the crossbeam downward, causing the mating nozzles at both ends of the crossbeam to connect with the welded water pipe. With the help of the detection tube and the pressure gauge, the pressure change inside the water pipe can be detected. If the pressure gauge reading drops significantly, it indicates that there is a weld seam in the water pipe, and repair welding is required. This method facilitates the user's inspection of the welding quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the testing mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the pressurization mechanism of this utility model.

[0021] The markings in the diagram are: 1. Base; 2. Chuck; 3. Positioning spindle; 4. Gantry frame; 5. Positioning plate; 6. Locking block; 7. Detection mechanism; 701. Connecting nozzle; 702. Rubber sleeve; 703. Pressure gauge; 704. Detection tube; 705. Positioning support foot; 706. Positioning shaft; 707. Crossbeam; 708. Spring; 8. Pressurization mechanism; 801. Cylinder; 802. Mounting plate; 803. Drive rod; 804. Stop ring; 805. Piston plate; 806. Cylinder body; 807. Exhaust port; 808. Inlet port; 809. One-way valve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: As Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a water-cooled screen welding fixture, including a base 1, a chuck 2 on the base 1, a positioning mandrel 3 and a gantry frame 4 fixedly installed on the base 1, a positioning plate 5 fixedly installed on the positioning mandrel 3, locking blocks 6 on both sides of the gantry frame 4, a detection mechanism 7 at the upper end of the gantry frame 4, and a pressure mechanism 8 installed at the middle position of the upper end of the gantry frame 4.

[0024] Specifically, during use, the water-cooled screen cylinder is fixed to the base 1 using chuck 2. Then, the water pipe is secured using locking block 6 and positioning plate 5, connecting the water pipe to the water-cooled screen cylinder for easy welding. The welding quality can be inspected through the combined use of detection mechanism 7 and pressurization mechanism 8.

[0025] Example 2: Figure 2 and Figure 3As shown, the testing mechanism 7 includes a positioning support 705 fixedly installed on the gantry frame 4, a positioning shaft 706 slidably installed on the positioning support 705, a crossbeam 707 fixedly installed at the lower end of the positioning shaft 706, and docking nozzles 701 fixedly installed at both ends of the crossbeam 707. A detection tube 704 is connected to the docking nozzle 701, and a pressure gauge 703 is connected to the detection tube 704. A rubber sleeve 702 is fitted on the docking nozzle 701, and a spring 708 is fitted on the positioning shaft 706. A movable hole is opened on the positioning support 705, and the positioning support 705 is slidably installed on the positioning support 705 through the movable hole.

[0026] Specifically, after the welding process is completed, the operator can extend the cylinder 801. When the piston rod of the cylinder 801 extends, the pre-compressed spring 708 pushes the crossbeam 707 downward in the vertical direction. The downward movement of the crossbeam 707 causes the mating nozzles 701 installed at both ends to precisely align with the welded water pipe interface. Through the coordinated operation of the detection tube 704 and the high-precision pressure gauge 703, the changes in the air pressure parameters inside the water pipe are monitored in real time. If the reading of the pressure gauge 703 drops significantly in a stable state, this indicates that there may be insufficient airtightness or weld defects at the welded part. The operator is reminded to repair the suspected weld to ensure that the sealing performance of the pipeline system meets the design requirements.

[0027] Example 3: Figure 2 and Figure 4 As shown, the pressurizing mechanism 8 includes a mounting plate 802 fixedly installed on the gantry frame 4. A cylinder 801 is fixedly installed on the mounting plate 802. A cylinder body 806 is fixedly installed below the cylinder 801. A drive rod 803 is fixedly installed at the output end of the cylinder 801. A stop ring 804 is fixedly installed on the drive rod 803. A piston plate 805 is fixedly installed at the lower end of the drive rod 803, and the piston plate 805 is slidably installed inside the cylinder body 806. An air inlet 808 is opened at the middle position of the bottom of the cylinder body 806. An exhaust port 807 is opened on both sides of the air inlet 808. A one-way valve 809 is installed in both the air inlet 808 and the exhaust port 807. One end of the detection tube 704 is connected to the docking nozzle 701, and the other end of the detection tube 704 is connected to the cylinder body 806 through the exhaust port 807.

[0028] Specifically, the one-way valve 809 in the intake port 808 only allows external gas to enter the cylinder block 806 through the intake port 808, and the one-way valve 809 in the exhaust port 807 only allows gas in the cylinder block 806 to be discharged through the exhaust port 807.

[0029] After the precise connection between the fitting 701 and the welded water pipe is completed, the piston plate 805 can reciprocate within the cylinder 806 via the driving action of the cylinder 801. Specifically, when the cylinder 801 starts and drives the piston plate 805 upward, a negative pressure state is formed inside the cylinder 806. At this time, outside air is drawn into the internal space of the cylinder 806 through the specially designed air inlet 808. Conversely, when the piston plate 805 moves downward under the drive of the cylinder 801, the internal space of the cylinder 806 gradually shrinks, and the previously drawn-in gas is compressed. This compressed gas is then forced into the welded water pipe through the connecting pipe. This process continuously increases the gas pressure inside the water pipe, thus providing the necessary pressure conditions for subsequent airtightness testing.

[0030] Working principle: During use, the water-cooled screen cylinder is fixed to the base 1 by the chuck 2. Then, the water pipe is fixed by the locking block 6 and the positioning plate 5, and the water pipe is connected to the water-cooled screen cylinder for easy welding. After welding is completed, the cylinder 801 can be extended. After the cylinder 801 extends, the spring 708 will push the crossbeam 707 downward, so that the docking nozzles 701 at both ends of the crossbeam 707 are connected to the welded water pipe. The pressure change inside the water pipe can be detected by the detection tube 704 and the pressure gauge 703. If the reading of the pressure gauge 703 drops significantly, it indicates that there is a weld seam and it needs to be repaired. This allows users to check the welding quality. After the docking nozzle 701 is connected to the welded water pipe, the piston plate 805 can be driven by the cylinder 801 to move up and down in the cylinder 806. When the piston plate 805 moves upward, the outside gas will enter the cylinder 806 through the air inlet 808. When the piston plate 805 moves downward, the gas in the cylinder 806 will be forced into the welded water pipe, thereby increasing the air pressure in the water pipe for airtightness testing.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A welding fixture for a water-cooled screen, comprising a base (1), a chuck (2) provided on the base (1), a positioning mandrel (3) and a gantry frame (4) fixedly mounted on the base (1), a positioning plate (5) fixedly mounted on the positioning mandrel (3), and locking blocks (6) provided on both sides of the gantry frame (4), characterized in that: A detection mechanism (7) is provided at the upper end of the gantry frame (4). The detection mechanism (7) includes a positioning support (705) fixedly installed on the gantry frame (4). A positioning shaft (706) is slidably installed on the positioning support (705). A crossbeam (707) is fixedly installed at the lower end of the positioning shaft (706). A docking nozzle (701) is fixedly installed at both ends of the crossbeam (707). A detection tube (704) is connected to the docking nozzle (701). A pressure gauge (703) is connected to the detection tube (704). A pressurization mechanism (8) is installed at the middle position of the upper end of the gantry frame (4).

2. The water-cooled screen welding fixture according to claim 1, characterized in that: A rubber sleeve (702) is fitted on the docking nozzle (701), and a spring (708) is fitted on the positioning shaft (706).

3. The water-cooled screen welding fixture according to claim 2, characterized in that: The positioning foot (705) has a movable hole, and the positioning foot (705) is slidably installed on the positioning foot (705) through the movable hole.

4. The water-cooled screen welding fixture according to claim 3, characterized in that: The crossbeam (707) is movably mounted below the positioning support (705) via the positioning shaft (706). One end of the spring (708) is connected to the positioning support (705), and the other end of the spring (708) is connected to the crossbeam (707). The docking nozzle (701) is movably mounted at the upper edge of the gantry frame (4) via the crossbeam (707).

5. The water-cooled screen welding fixture according to claim 4, characterized in that: The pressurizing mechanism (8) includes a mounting plate (802) fixedly installed on the gantry (4). A cylinder (801) is fixedly installed on the mounting plate (802). A cylinder body (806) is fixedly installed below the cylinder (801). A drive rod (803) is fixedly installed at the output end of the cylinder (801). A stop ring (804) is fixedly installed on the drive rod (803). A piston plate (805) is fixedly installed at the lower end of the drive rod (803), and the piston plate (805) is slidably installed inside the cylinder body (806). An air inlet (808) is opened at the middle position of the bottom of the cylinder body (806). An exhaust port (807) is opened on both sides of the air inlet (808). A one-way valve (809) is installed in both the air inlet (808) and the exhaust port (807).

6. The water-cooled screen welding fixture according to claim 5, characterized in that: One end of the detection tube (704) is connected to the docking nozzle (701), and the other end of the detection tube (704) is connected to the cylinder block (806) through the exhaust port (807).

7. The water-cooled screen welding fixture according to claim 6, characterized in that: A through hole is provided in the middle of the crossbeam (707), and the drive rod (803) passes through the crossbeam (707) through the through hole.

8. The water-cooled screen welding fixture according to claim 7, characterized in that: The cylinder (801) is fixedly mounted on the gantry (4) by the mounting plate (802), and the piston plate (805) is movably mounted in the cylinder body (806) by the drive rod (803). A fixing bracket is provided at the middle position of the upper end of the gantry (4), and the cylinder body (806) is fixed on the gantry (4) by the fixing bracket.

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