Hydrostatic test sealing aid

Abstract

The utility model relates to pressure vessel detection technical field especially relates to water pressure test sealing auxiliary device, including sealed pipe, sealing washer, handle and plugging valve, sealed pipe adopts high strength alloy steel integral casting, and it is circular cylindrical structure, the outer wall on sealed pipe right -hand member is equipped with sealing washer, sealing washer adopts rubber material to make, the top left end of sealed pipe is rotatably connected with handle, and the bottom of handle is inserted sealed pipe and is fixedly connected with plugging valve, and plugging valve rotates in sealed pipe left part. The utility model discloses a rubber sealing washer of sealed pipe outer wall realizes reliable sealing, and the rotation handle linkage plugging valve completes exhaust operation, and the structure is compact, and the operation is convenient, adopts high strength alloy steel and stainless steel material quality, improves the pressure resistance, corrosion resistance of device, is applicable to boiler water pressure test environment.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel testing technology, and in particular to a sealing auxiliary device for hydrostatic testing. Background Technology

[0002] The hydrostatic test sealing auxiliary device is a key supporting equipment used in the manufacturing, installation and maintenance of boilers for temporary sealing of pipe openings, manholes or handholes. It is mainly used to provide a fast, reliable and reusable seal for various openings during hydrostatic testing after the assembly or repair of boiler pressure-bearing components. This device is widely used in the inspection process of power plant boilers, industrial boilers, waste heat boilers and pressure vessels. It can effectively isolate the test area, prevent high-pressure water leakage and ensure the stable establishment of test pressure.

[0003] Existing hydrostatic test seals mostly use blind flange bolts or welded heads. Installation requires multiple operators, bolt tightening is cumbersome, and it is difficult to operate in high-altitude and confined spaces, resulting in low efficiency. Uneven bolt stress can easily cause blind flange tilting and seal leakage, affecting the accuracy of the test. Although some have venting functions, they rely on external hoses or independent valves, resulting in low integration, loose connections that are easy to fall off, and inaccurate venting control, which can easily lead to air blockage, pressure fluctuations, and water hammer, affecting the stability and safety of the test.

[0004] Therefore, it is necessary to design a sealing auxiliary device for water pressure testing to solve the above-mentioned technical problems. Summary of the Invention

[0005] To overcome the shortcomings of existing sealing methods, such as cumbersome installation, low efficiency, and easy leakage; and the low integration of exhaust devices, unstable control, and impact on test safety and accuracy, the technical problem is to provide an auxiliary sealing device for hydrostatic testing.

[0006] The technical solution is as follows: a water pressure test sealing auxiliary device, including a sealing tube, a sealing gasket, a handle, and a plugging valve. The sealing tube is made of high-strength alloy steel and is integrally cast in a circular cylindrical structure. A sealing gasket is provided on the outer wall of the right end of the sealing tube. The sealing gasket is made of rubber material. A handle is rotatably connected to the top left end of the sealing tube. The bottom of the handle is inserted into the sealing tube and fixedly connected to the plugging valve. The plugging valve rotates on the left side inside the sealing tube.

[0007] Preferably, it also includes a reinforcing cover, with a reinforcing cover fitted on the front and rear sides of the middle of the sealing tube, and positioning holes symmetrically opened on the left and right sides of the opposite end of the two reinforcing covers.

[0008] Preferably, it also includes rubber pads, with rubber pads provided on the inner sidewalls of the two reinforcing covers, and the rubber pads contacting the outer wall of the sealing tube.

[0009] Preferably, the device also includes a pressure sensor and a wireless transmission module. A pressure sensor is installed on the top right side of the sealed tube, and a wireless transmission module is provided on the pressure sensor. The pressure sensor and the wireless transmission module are electrically connected.

[0010] As a preferred embodiment, the tube also includes a spiral wound gasket, which is provided inside the right end of the sealing tube and is made of metal graphite.

[0011] Preferably, both the sealing valve and the reinforcing cover are made of stainless steel.

[0012] The beneficial effects of this utility model are as follows: 1. This utility model achieves reliable sealing through the rubber sealing gasket on the outer wall of the sealing tube, and completes the exhaust operation by rotating the handle in conjunction with the sealing valve. It has a compact structure and is easy to operate. It is made of high-strength alloy steel and stainless steel, which improves the pressure resistance and corrosion resistance of the device and is suitable for boiler water pressure test environment.

[0013] 2. This utility model achieves stable installation, enhances the overall structural rigidity, and prevents deformation under high pressure by installing a reinforcing cover in the middle of the sealing tube and setting a positioning hole on the reinforcing cover for inserting a positioning pin. The rubber pad set on the inner side of the reinforcing cover is in close contact with the outer wall of the sealing tube, which plays a role in shock absorption and anti-slip, effectively improving the stability and vibration resistance of the device.

[0014] 3. This utility model uses a pressure sensor and a wireless transmission module to monitor the test pressure in real time and transmit the data remotely, thus achieving remote monitoring; the sealing valve and the reinforcing cover are made of stainless steel, which is corrosion-resistant and has high strength; combined with the metal graphite spiral wound gasket inside the sealing tube, the sealing reliability and environmental adaptability are further improved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the sealing tube of this utility model.

[0017] Figure 3 This is a structural schematic diagram of the reinforcing cover, positioning hole, and rubber pad of this utility model.

[0018] Figure 4 This is a schematic diagram of the covering structure for the pressure sensor, wireless transmission module, and wrapping pad of this utility model.

[0019] In the attached diagram, the following are the reference numerals: 1. Sealing tube, 2. Sealing gasket, 3. Handle, 4. Sealing valve, 5. Reinforcing cover, 6. Positioning hole, 7. Rubber pad, 8. Pressure sensor, 9. Wireless transmission module, 10. Wrapping pad. Detailed Implementation

[0020] Example: A sealing auxiliary device for hydrostatic testing, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a sealing tube 1, a sealing gasket 2, a handle 3, and a plugging valve 4. The sealing tube 1 is made of high-strength alloy steel and is integrally cast in a cylindrical shape. A sealing gasket 2 is provided on the outer wall of the right end of the sealing tube 1. The sealing gasket 2 is made of rubber material. The handle 3 is rotatably connected to the top left end of the sealing tube 1. The bottom of the handle 3 is inserted into the sealing tube 1 and the plugging valve 4 is installed by bolts. The plugging valve 4 rotates on the left side inside the sealing tube 1.

[0021] like Figure 1 and Figure 3 As shown, it also includes a reinforcing cover 5 and a rubber pad 7. The front and rear sides of the middle of the sealing tube 1 are respectively fitted with reinforcing covers 5. The two reinforcing covers 5 are symmetrically provided with positioning holes 6 on the left and right sides of the opposite end. The sealing valve 4 and the reinforcing covers 5 are both made of stainless steel. The inner sidewalls of the two reinforcing covers 5 are respectively provided with rubber pads 7, and the rubber pads 7 are in contact with the outer wall of the sealing tube 1.

[0022] like Figure 1 , Figure 3 and Figure 4 As shown, it also includes a pressure sensor 8 and a wireless transmission module 9. The pressure sensor 8 is installed on the top right side of the sealing tube 1, and the wireless transmission module 9 is provided on the pressure sensor 8. The pressure sensor 8 and the wireless transmission module 9 are electrically connected.

[0023] like Figure 4 As shown, it also includes a spiral wound pad 10. The spiral wound pad 10 is provided inside the right end of the sealing tube 1. The spiral wound pad 10 is made of metal graphite material.

[0024] When this device is needed, first align the sealing tube 1 with the boiler pipe opening to be tested, and slowly push it in so that the sealing gasket 2 on the outer wall of the right end of the sealing tube 1 initially fits against the boiler flange end face. The sealing tube 1 is made of high-strength alloy steel integral casting and has a cylindrical structure, which has excellent structural strength and resistance to deformation and can withstand the high pressure load during the water pressure test. The sealing gasket 2 is made of rubber material, which has good compression resilience and sealing performance. It can form the first waterproof barrier in the initial contact stage, effectively preventing high pressure water from leaking from the end face during the test. At the same time, the spiral wound gasket 10 fits tightly against the boiler pipe opening, and the sealing gasket 2 is further compressed to form a double sealing structure to ensure no leakage during the test.

[0025] After sealing is completed, an venting operation is required to avoid residual air affecting pressure transmission and test accuracy. At this time, the operator manually turns handle 3 to open the sealing valve 4, which facilitates gas accumulation and discharge. When the external water source begins to inject water into the boiler, the air is smoothly discharged through the sealing valve 4 until a continuous water flow overflows, indicating that the system is full of water. Then, the handle 3 is turned in the opposite direction to close the sealing valve 4, completing the venting process. The sealing valve 4 effectively prevents air blockage and cavitation, ensures uniform pressure rise, and improves test accuracy. To further improve the structural stability and installation reliability of the device, reinforcement covers 5 are respectively fitted on the front and rear sides of the middle of the sealing tube 1. The positioning pin passes through the positioning hole 6 and is tightened by the nut, so that the reinforcement cover 5 tightly hugs the sealing tube 1, effectively enhancing the overall rigidity and preventing local deformation or instability under high pressure conditions.

[0026] During the pressurization phase of the test, pressure sensor 8 monitors the internal pressure changes in real time. Pressure sensor 8 is connected to the inside of the sealing tube 1, which can accurately sense the pressure value during the water pressure test. The data is sent to the remote receiving terminal in real time through the wireless transmission module 9 to realize wireless monitoring. Pressure sensor 8 and wireless transmission module 9 are electrically connected to form a complete pressure monitoring system, which makes it convenient for operators to observe the pressure curve in a safe area, determine whether there is a leak or pressure abnormality, and improve the safety and controllability of the test.

[0027] In addition, the inner walls of the two reinforcing covers 5 are respectively equipped with rubber pads 7. The rubber pads 7 are in close contact with the outer wall of the sealing tube 1, which not only play a role in shock absorption and buffering, but also prevent relative sliding between the reinforcing cover 5 and the sealing tube 1 due to vibration, thereby improving the stability of the overall structure. The spiral wound pad 10 is made of metal graphite material, which has high temperature resistance, high pressure resistance and self-compensation characteristics. When under pressure, it can further fill the small gaps and enhance the sealing reliability. The sealing valve 4 and the reinforcing cover 5 are both made of stainless steel, which has excellent corrosion resistance and mechanical strength, ensuring that the device can be used stably for a long time in humid and corrosive environments. After the test is completed, the pressure is released first, then the handle 3 is turned to open the sealing valve 4 to remove residual moisture, and finally the positioning pin and the reinforcing cover 5 are removed and the sealing tube 1 is taken out.

Claims

1. A sealing auxiliary device for hydrostatic testing, characterized in that, It includes a sealing tube (1), a sealing gasket (2), a handle (3) and a plugging valve (4). The sealing tube (1) is made of high-strength alloy steel and is integrally cast in a cylindrical shape. A sealing gasket (2) is provided on the outer wall of the right end of the sealing tube (1). The sealing gasket (2) is made of rubber material. A handle (3) is rotatably connected to the top left end of the sealing tube (1). The bottom of the handle (3) is inserted into the sealing tube (1) and fixedly connected to the plugging valve (4). The plugging valve (4) rotates on the left side inside the sealing tube (1).

2. The hydraulic pressure test sealing auxiliary device according to claim 1, characterized in that, It also includes a reinforcing cover (5), and the front and rear sides of the middle of the sealing tube (1) are respectively fitted with a reinforcing cover (5), and the left and right sides of the opposite end of the two reinforcing covers (5) are respectively symmetrically provided with positioning holes (6).

3. The hydraulic pressure test sealing auxiliary device according to claim 2, characterized in that, It also includes rubber pads (7), and the inner walls of the two reinforcing covers (5) are respectively provided with rubber pads (7), and the rubber pads (7) are in contact with the outer wall of the sealing tube (1).

4. The hydraulic pressure test sealing auxiliary device according to claim 3, characterized in that, It also includes a pressure sensor (8) and a wireless transmission module (9). The pressure sensor (8) is installed on the top right side of the sealing tube (1), and the wireless transmission module (9) is provided on the pressure sensor (8). The pressure sensor (8) and the wireless transmission module (9) are electrically connected.

5. The hydraulic pressure test sealing auxiliary device according to claim 4, characterized in that, It also includes a spiral wound pad (10), and the spiral wound pad (10) is provided inside the right end of the sealing tube (1). The spiral wound pad (10) is made of metal graphite material.

6. The hydraulic pressure test sealing auxiliary device according to claim 5, characterized in that, Both the sealing valve (4) and the reinforcing cover (5) are made of stainless steel.

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