Installation tool of ship pulsating pressure test sensor

Abstract

The invention provides an installation tool for a ship pulsating pressure test sensor. The installation tool comprises a sealing box side plate, a sealing box top plate, a sealing performance experiment seat plate and a sensor bolt seat. The sealing box top plate is vertically welded to the tops of the sealing box side plates to form the sealing box of an inverted-U-shaped cylinder structure, the sealing box side plates are phi 108 * 6 carbon steel pipes with the length of 70 mm, and the sealing box top plate is a marine carbon steel plate with the thickness of 6 mm and the diameter of 130 mm; the tightness test seat plate is welded on the outer side of the side plate of the sealing box and is a circular marine carbon steel plate with the thickness of 10mm-15mm, a threaded hole with the diameter less than or equal to 12mm is formed in the center of the tightness test seat plate, and the threaded hole is aligned with two circular holes with the diameter of 15mm in the side plate of the sealing box; a threaded hole with the diameter of 12 mm is formed in the center of the sensor bolt seat and penetrates through a round hole with the diameter of 52 mm in the center of the top plate of the sealing box to be welded and fixed, and the installation gap between the lower end of the sensor bolt seat and the hull outer plate is larger than or equal to 5 mm. According to the technical scheme, the defects that in an existing technical scheme, an outer plate is damaged and verified, a tool cannot be repeatedly used, adaptability is poor, and a sealing test is complex can be overcome.

Description

Technical Field

[0001] The invention belongs to the technical field of shipbuilding, and in particular relates to an installation tool for a ship pulsating pressure test sensor. Background Art

[0002] The propeller is one of the most important power components of a ship. Its rotational motion generates excitation forces. Research has found that the majority of harmful vibrations on modern ships are caused by propeller excitation forces, particularly the propeller's pulsating pressure. Therefore, during the ship design phase, propeller pulsating pressure is calculated and simulated to ensure that its impact on the ship is within the permitted range of ship specifications. Furthermore, after ship construction is completed, the pulsating pressure generated by the propeller is tested as needed to verify the compliance of actual values with design values, understand the inherent characteristics of the ship, and provide a reliable basis for optimization and improvement.

[0003] The ship's propeller pulsation pressure measurement point is located on the outer plating above the propeller and is measured during the ship's sea trials. Before the ship is launched, a hole for the sensor must be drilled at the outer plating's pulsation pressure measurement point. The hole diameter, depending on the size of the sensor, typically ranges from a few millimeters to over ten millimeters. The thread is then machined and the sensor bolt is screwed into the hole. To securely fasten the sensor bolt, the outer plating must be at least 20 mm thick. However, a considerable number of ships have outer plating thicknesses less than 20 mm, making it impossible to securely fasten the sensor bolt. This can cause the bolt to pop out during launching or testing, leading to cabin flooding and even personal injury. There are generally two existing technologies for solving the above problems: one is to locally thicken the outer plate, and set an outer plate with a thickness of about 20mm in the outer plate opening area. Since the test requires the arrangement of several points, the distribution area is large, resulting in a large area of thickened outer plate, which will increase the weight of the ship, which is not conducive to ship weight reduction, nor is it conducive to controlling construction costs and material costs; the second is to make a thickened step-type transition tooling temporarily embedded in the outer plate welding, and open bolt holes on the tooling for installing sensor bolts. This requires expanding the outer plate opening to 50-100mm. After the test, these outer plate openings need to be repaired by locally replacing the plate. This not only increases the construction workload, but also increases material costs and construction period, and is not conducive to controlling construction costs and construction period.

[0004] Therefore, how to provide an installation tool for ship pulsation pressure test sensors that can solve the shortcomings of existing technical solutions such as outer plate destruction verification, non-reusability of tooling, poor adaptability and complex sealing tests has become a technical problem that needs to be solved urgently. Summary of the Invention

[0005] An embodiment of the present invention provides an installation tool for a ship pulsating pressure test sensor, which can solve the shortcomings of the existing technical solutions, such as outer plate destruction verification, non-reusability of the tool, poor adaptability, and complex sealing test.

[0006] In an embodiment of the present invention, a mounting tool for a ship pulsating pressure test sensor is provided, wherein the mounting tool comprises: a sealing box side plate 1, a sealing box top plate 2, a sealing test seat plate 3 and a sensor bolt seat 4;

[0007] The sealing box top plate 2 is vertically welded to the top of the sealing box side plate 1 to form a sealing box with an inverted U-shaped cylindrical structure. The sealing box side plate 1 is a φ108×6 carbon steel pipe with a length of 70mm. The sealing box top plate 2 is a marine carbon steel plate with a thickness of 6mm and a diameter of 130mm.

[0008] The sealing test seat plate 3 is welded to the outside of the sealing box side plate 1. It is a circular marine carbon steel plate with a thickness of 10mm-15mm. A threaded hole with a diameter of less than or equal to 12mm is provided in the center of the plate. The threaded hole is aligned with the two 15mm diameter circular holes on the sealing box side plate 1.

[0009] The sensor bolt seat 4 is a circular cylinder with a thickness of 35 mm and a diameter of 50 mm. A threaded hole with a diameter of 12 mm is provided inside it. It is welded and fixed through the central circular hole with a diameter of 52 mm on the top plate of the sealing box 2. The installation gap between the lower end of the sensor bolt seat 4 and the outer plate of the hull is ≥5 mm.

[0010] Furthermore, the two circular holes provided in the sealing box side plate 1 are symmetrically distributed on both sides of the axial center line of the sealing box side plate 1 and are used for inflation during the tightness test and installation of the pressure gauge.

[0011] Furthermore, the tightness test seat plate 3 and the sealing box side plate 1 are welded using peripheral fillet welds with a weld foot height of 3 mm.

[0012] Furthermore, the sensor bolt seat 4 is welded in the following manner: after passing through the circular hole of the sealing box top plate 2, a 5mm end is reserved at the upper portion for fillet welding, and the weld foot height is 3mm.

[0013] Furthermore, the bottom of the sealing box side plate 1 is temporarily fixed to a steel plate with a diameter of 200 mm through an outer fillet weld, and the inner hole of the sensor bolt seat 4 is tightened with bolts of appropriate size to form a closed space. The fillet welds of the sealing box side plate 1 and the sealing box top plate 2, the fillet welds of the sealing box side plate 1 and the sealing test seat plate 3, and the fillet welds of the sensor bolt seat 4 and the sealing box top plate 2 are tested through a tightness test. After passing the test, the steel plate is removed and the lower end of the sealing box side plate (1) is polished and smoothed.

[0014] Furthermore, the installation tool also includes a sealing box inner plate 11;

[0015] The lower end of the inner plate 11 of the sealing box is welded to the sensor bolt seat 4, and the upper end of the inner plate 11 of the sealing box is welded to the edge of the circular hole of the sealing box top plate 2, which is suitable for sensor installation requirements with bolt length ≤ 30mm.

[0016] Furthermore, the sealing box side plate 1 is an open structure, and its open end is fixed to the hull structure through a peripheral fillet weld, and the weld tightness test pressure is ≥0.015MPa.

[0017] Furthermore, the installation angle of the sensor bolt seat 4 is adjustable. By changing the welding position of the circular hole between the sensor and the sealing box top plate 2, the sensor can be installed at an angle of 0°-45° to the hull outer plate.

[0018] Furthermore, the welding of the sealing box side plate 1 and the sealing box top plate 2, the welding of the sealing test seat plate 3 and the sealing box side plate 1, and the welding of the sensor bolt seat 4 and the sealing box top plate 2 all use marine carbon steel welding materials, and there are no defects such as cracks and pores on the weld surface.

[0019] Furthermore, when the installation tool is removed, the weld seam along the bottom of the sealing box side plate 1 is cut to retain the integrity of the sensor bolt seat 4 and the tightness test seat plate 3 for reuse in subsequent tests.

[0020] The beneficial effects brought about by the present invention are as follows:

[0021] It can be seen from the above scheme that the embodiment of the present invention provides an installation tool for a ship pulsating pressure test sensor, comprising: a sealing box side plate 1, a sealing box top plate 2, a sealing test seat plate 3 and a sensor bolt seat 4; the sealing box top plate 2 is vertically welded to the top of the sealing box side plate 1 to form a sealing box with an inverted U-shaped cylindrical structure, the sealing box side plate 1 is a φ108×6 carbon steel pipe with a length of 70mm, and the sealing box top plate 2 is a marine carbon steel plate with a thickness of 6mm and a diameter of 130mm; the sealing test seat plate 3 is welded to the sealing box. The outer side of the sealing box side panel 1 is a circular marine carbon steel plate with a thickness of 10-15 mm. A threaded hole with a diameter of 12 mm or less is defined in its center, which aligns with two 15 mm diameter holes in the sealing box side panel 1. The sensor bolt seat 4 is a circular cylinder with a thickness of 35 mm and a diameter of 50 mm. It has a threaded hole with a diameter of 12 mm and is welded through a 52 mm diameter hole in the center of the sealing box top panel 2. The installation clearance between the lower end of the sensor bolt seat 4 and the hull outer plating is ≥5 mm. This technical solution addresses the drawbacks of existing solutions, such as the need for outer plating destruction verification, the non-reusability of tooling, poor adaptability, and the complexity of sealing tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the installation tooling structure of a ship pulsating pressure test sensor according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of an installation tool for another ship pulsating pressure test sensor according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of an installation tool for another ship pulsating pressure test sensor according to an embodiment of the present invention;

[0025] In the figure, 1 is the side plate of the sealing box, 2 is the top plate of the sealing box, 3 is the sealing test seat plate, 4 is the sensor bolt seat, and 11 is the inner side plate of the sealing box. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] like Figures 1 to 3 As shown, Figure 1 This is a schematic diagram of the installation tooling structure of a ship pulsating pressure test sensor according to an embodiment of the present invention. Figure 2 FIG1 is a schematic diagram of another installation tool structure of a ship pulsating pressure test sensor according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the installation tooling structure of another ship pulsating pressure test sensor according to an embodiment of the present invention.

[0028] Figure 1 A ship pulsation pressure test sensor installation tool is characterized in that the installation tool comprises: a sealing box side plate 1, a sealing box top plate 2, a sealing test seat plate 3 and a sensor bolt seat 4;

[0029] The sealing box top plate 2 is vertically welded to the top of the sealing box side plate 1 to form a sealing box with an inverted U-shaped cylindrical structure. The sealing box side plate 1 is a φ108×6 carbon steel pipe with a length of 70mm. The sealing box top plate 2 is a marine carbon steel plate with a thickness of 6mm and a diameter of 130mm.

[0030] The sealing test seat plate 3 is welded to the outside of the sealing box side plate 1. It is a circular marine carbon steel plate with a thickness of 10mm-15mm. A threaded hole with a diameter of less than or equal to 12mm is provided in the center of the plate. The threaded hole is aligned with the two 15mm diameter circular holes on the sealing box side plate 1.

[0031] The sensor bolt seat 4 is a circular cylinder with a thickness of 35 mm and a diameter of 50 mm. A threaded hole with a diameter of 12 mm is provided inside it. It is welded and fixed through the central circular hole with a diameter of 52 mm on the top plate of the sealing box 2. The installation gap between the lower end of the sensor bolt seat 4 and the outer plate of the hull is ≥5 mm.

[0032] In the embodiment of the present invention, the inverted U-shaped structure is lightweight and has high strength, avoiding large-area openings in the outer plate; the symmetrical circular holes simplify the inflation and pressure gauge installation process, and the tightness test function is integrated through the standardized threaded holes, without the need for additional equipment. After the test, it can be removed and reused after simple polishing. The gap between the sensor bolt seat and the outer plate is designed to avoid friction with the outer plate when the ship is launched; the inner hole thread is suitable for a variety of sensors and has strong versatility.

[0033] In one embodiment of the present invention, two circular holes are provided in the sealing box side plate 1 and are symmetrically distributed on both sides of the axial center line of the sealing box side plate 1 , and are used for inflation during the tightness test and installation of a pressure gauge.

[0034] In one embodiment of the present invention, the tightness test seat plate 3 and the sealing box side plate 1 are welded using peripheral fillet welds with a weld foot height of 3 mm.

[0035] In one embodiment of the present invention, the sensor bolt seat 4 is welded as follows: after passing through the circular hole of the sealing box top plate 2, a 5mm end is reserved at the upper part and a fillet weld is performed, and the weld leg height is 3mm.

[0036] In one embodiment of the present invention, the bottom of the sealing box side panel 1 is temporarily fixed to a steel plate with a diameter of 200 mm by an outer fillet weld, and the inner hole of the sensor bolt seat 4 is tightened with bolts of appropriate size to form a closed space. After the fillet welds between the sealing box side panel 1 and the sealing box top plate 2, the fillet welds between the sealing box side panel 1 and the sealing test seat plate 3, and the fillet welds between the sensor bolt seat 4 and the sealing box top plate 2 are tested through a tightness test and the steel plates are removed and the lower end of the sealing box side panel 1 is polished and smoothed.

[0037] In one embodiment of the present invention, the installation tool further includes a sealing box inner plate 11;

[0038] The lower end of the inner plate 11 of the sealing box is welded to the sensor bolt seat 4, and the upper end of the inner plate 11 of the sealing box is welded to the edge of the circular hole of the sealing box top plate 2, which is suitable for sensor installation requirements with bolt length ≤ 30mm.

[0039] Among them, the additional inner plate 11 can adapt to sensors with bolt length ≤ 30 mm, solving the installation problem of short bolts.

[0040] In one embodiment of the present invention, the sealing box side panels 1 are open-ended, with their open ends secured to the hull components via peripheral fillet welds, with the weld tightness test pressure ≥ 0.015 MPa. The sealing box side panels 1 are open-ended and directly secured to the hull components with fillet welds (test pressure ≥ 0.015 MPa), making them suitable for installation in confined spaces.

[0041] In one embodiment of the present invention, the sensor bolt holder 4 features an adjustable installation angle. By changing the weld position of the circular hole between the sensor and the sealing box top plate 2, the sensor can be installed at an angle of 0° to 45° relative to the hull plating. This adjustable angle (0° to 45°) allows the sensor to be tilted to meet the sensor's desired angle in various testing scenarios.

[0042] In one embodiment of the present invention, the welding of the sealing box side plate 1 and the sealing box top plate 2, the welding of the tightness test seat plate 3 and the sealing box side plate 1, and the welding of the sensor bolt seat 4 and the sealing box top plate 2 all use marine carbon steel welding materials, and there are no defects such as cracks and pores on the weld surface.

[0043] In another embodiment of the present invention, when the installation tool is removed, the weld is cut along the bottom of the sealing box side plate 1 to retain the integrity of the sensor bolt seat 4 and the tightness test seat plate 3 for reuse in subsequent tests.

[0044] In an embodiment of the present invention, a mounting tool for a ship pulsating pressure test sensor has a simple structure and is easy to manufacture, install, and use. It can be applied to the installation of pulsating pressure sensors in a variety of environments. The material of the embodiment of the present invention is ordinary marine steel or steel pipe, which can be manufactured and formed by simple welding, and the manufacturing cost is very low. The technical solution of the present invention is highly versatile and can adapt to different arrangements of internal components of a ship by changing the shape of the sealing box, changing the type or installation angle and position of the sensor bolt seat, changing the installation position of the tightness test seat plate, etc.; and adapt to the installation of different sensors by changing the thickness of the sensor bolt seat. The technical solution of the present invention can be reused; after one use, it can be directly cut off along the bottom of the side wall of the sealing box, and the lower opening of the side wall of the sealing box can be polished and reused. Effectively reduce costs.

[0045] In addition, the embodiments of the present invention can avoid the situation where a large hole is opened in the outer plate of a ship for a pulsating pressure test, which leads to the replacement of the outer plate, thereby effectively reducing construction and material costs and shortening the construction period.

[0046] Figure 1 In the embodiment of the present invention, a tool for installing a ship pulsating pressure test sensor includes: a sealing box side plate 1, a sealing box top plate 2, a tightness test seat plate 3 and a sensor bolt seat 4.

[0047] The sealing box is composed of a sealing box side panel 1 and a sealing box top panel 2. The sealing box top panel 2 is installed on the top of the sealing box side panel 1. The sealing box side panel 1 is made of a φ108x6 carbon steel pipe with a length of 70mm. The sealing box top panel 2 is made of a marine carbon steel plate with a thickness of 6mm and a diameter of 130mm. Two circular holes with a diameter of 15mm are drilled on the sealing box side panel 1. A circular hole with a diameter of 52mm is opened in the center of the sealing box top panel 2 for installing the sensor bolt seat 4. The tightness test seat plate 3 is a circular marine carbon steel plate, with two pieces, a thickness of 12mm and a diameter of 35mm. A threaded hole with a diameter of 12mm is drilled in the center for installing the tightness test pressure gauge and the intake pipe. The sensor bolt seat 4 is a circular marine carbon steel plate with a thickness of 35mm and a diameter of 50mm. A threaded hole with a diameter of 12mm is drilled in the center for installing the pulsating pressure test sensor.

[0048] Production steps:

[0049] S1) Insert the sensor bolt seat 4 through the middle opening of the sealing box top plate 2 according to the diagram, leaving about 5mm at the top, and weld the upper corner seam firmly with electric welding, with a weld foot height of 3mm;

[0050] S2) Align the holes of the tightness test seat plate 3 with the holes of the sealing box side plate 1 according to the diagram and install them firmly. Weld the outer periphery of the tightness test seat plate 3 firmly with electric welding, with a weld height of 3mm;

[0051] S3) Cover the sealing box top plate 2 on the sealing box side plate 1 according to the diagram, and weld the corner joints of the side plates around the periphery with a weld height of 3mm;

[0052] S4) Prepare a steel plate with a diameter of about 200 mm, and weld the lower edge of the sealing box side plate 1 to the outer edge of the steel plate so that the sealing box and the steel plate form a closed box;

[0053] S5) Tighten and seal the threaded hole on the sensor bolt seat 4 with a suitable bolt;

[0054] S6) Perform an air tightness test on the sealing box in S4 using the tightness test seat plate 3 to check the tightness of the welds in S1, S2, and S3. If the test is qualified, remove the steel plate in S4 and polish the lower edge of the sealing box side plate 1 to make it smooth.

[0055] The following are the steps for using the embodiment of the present invention:

[0056] S11) According to the requirements of the ship's pulsating pressure test, the position of the sensor on the outer plate is selected, and a sensor installation hole with a thread and a diameter of 15 mm is drilled on the outer plate.

[0057] S12) Screw the sensor bolt into the 4 sensor bolt seat, and then align the sensor bolt with the outer plate opening mentioned in S11 and insert it into the hole so that the lower opening of the sealing box side plate just covers the outer plate and sticks firmly with a gap of less than 3mm.

[0058] S13) Spot weld two points on the outer corner of the sealing box side plate to fix the sealing box and remove the sensor bolts.

[0059] S14) The corner joints between the lower opening of the sealing box side panel and the outer panel are welded around the periphery.

[0060] S15) Seal the outer plate threaded hole and the sensor bolt seat threaded hole described in S11 with ordinary bolts of appropriate size.

[0061] S16) Install a tightness test pressure gauge and an air inlet pipe on the tightness test base plate 3, and perform a tightness check on the fillet weld described in S14. If qualified, remove the pressure gauge and the air inlet pipe, and seal the threaded hole of the tightness test base plate 3 with ordinary bolts of appropriate size.

[0062] S17) Before launching the vessel, screw the pulsating pressure test sensor into the sensor bolt seat 4 so that the lower end surface of the sensor bolt is flush with the outer surface of the outer plate.

[0063] S18) After the pulsation pressure test is completed and the ship enters the dock, the pulsation pressure test sensor is first removed, and then the fillet weld between the sealing box and the outer plate is cut off, and the lower edge of the sealing box side plate is polished and smoothed, leaving it for use.

[0064] S19) Sealing the outer plate openings described in S11 by surfacing welding, and performing a tightness check on the sealing welds.

[0065] Figure 2 In the embodiment of the present invention, a ship pulsation pressure test sensor installation tool is used. Figure 1 The sealing box of this embodiment is essentially the same, with the specific difference being that the sealing box includes an inner plate 11, the lower end of which is welded to the sensor bolt seat 4, and the upper end is welded to the edge of the opening of the sealing box top plate 2. This embodiment is suitable for use in pulsating pressure tests where the sensor bolts are short.

[0066] Other specific embodiments and Figure 1 Same, no more details.

[0067] Figure 3 In this embodiment of the present invention, a tooling for installing a ship's pulsating pressure test sensor is essentially the same as that of the first embodiment, differing in that the sealing box side panel 1 is open and fillet-welded to the hull structure. This embodiment is suitable for applications where the pulsating pressure test point is located near the hull structure, facilitating installation of the tooling.

[0068] Other specific embodiments Figure 1 Same, no more details.

[0069] Other features include the ability to install the pressure gauge seat plate anywhere on the top or side panels of the sealing box to facilitate tightness testing. The thickness of the sensor bolt seat can be selected based on sensor specifications. The sensor bolt seat can be installed on the side or top panels of the sealing box, even at varying angles, to facilitate installation and testing of the pulsating pressure test sensor. The sealing box depth can be selected based on the sensor bolt length and outer panel thickness. These variations are all within the scope of this invention and will not be further detailed.

[0070] A device for installing a ship's pulsating pressure test sensor comprises: a sealing box side panel 1, a sealing box top panel 2, a sealing test seat panel 3, and a sensor bolt seat 4. The sealing box top panel 2 is vertically welded to the top of the sealing box side panel 1 to form a sealing box with an inverted U-shaped cylindrical structure. The sealing box side panel 1 is a φ108×6 carbon steel pipe with a length of 70 mm, and the sealing box top panel 2 is a marine carbon steel plate with a thickness of 6 mm and a diameter of 130 mm. The sealing test seat panel 3 is welded to the outside of the sealing box side panel 1 and is a circular marine carbon steel plate with a thickness of 10 mm to 15 mm. A threaded hole with a diameter of less than or equal to 12 mm is defined in the center of the sealing box seat panel 1, and the threaded hole is aligned with two 15 mm diameter circular holes in the sealing box side panel 1. The sensor bolt seat 4 is a circular cylinder with a thickness of 35 mm and a diameter of 50 mm. A threaded hole with a diameter of 12 mm is defined in the seat panel. The sensor bolt seat 4 is welded through the 52 mm diameter central circular hole of the sealing box top panel 2 to secure the sensor bolt seat. The installation clearance between the lower end of the sensor bolt seat 4 and the hull outer plating is ≥5 mm.

[0071] The technical solution of the present invention can solve the shortcomings of the existing technical solutions, such as outer panel destruction verification, non-reusability of tooling, poor adaptability and complex sealing tests. Through structural innovation and process optimization, it solves the core problems of traditional technologies such as high cost, poor adaptability and non-reusability, and has significant technological progress and economic benefits.

[0072] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A ship pulsation pressure test sensor installation tool, characterized in that: The installation tool comprises: a sealing box side plate (1), a sealing box top plate (2), a sealing test seat plate (3) and a sensor bolt seat (4); The sealing box top plate (2) is vertically welded to the top of the sealing box side plate (1) to form a sealing box with an inverted U-shaped cylindrical structure. The sealing box side plate (1) is a φ108×6 carbon steel pipe with a length of 70 mm. The sealing box top plate (2) is a marine carbon steel plate with a thickness of 6 mm and a diameter of 130 mm. The sealing test seat plate (3) is welded to the outer side of the sealing box side plate (1) and is a circular marine carbon steel plate with a thickness of 10mm-15mm, with a threaded hole with a diameter less than or equal to 12mm opened in the center thereof, and the threaded hole is aligned with the two circular holes with a diameter of 15mm on the sealing box side plate (1); The sensor bolt seat (4) is a circular cylinder with a thickness of 35 mm and a diameter of 50 mm, and a threaded hole with a diameter of 12 mm is provided therein. The sensor bolt seat (4) is welded and fixed through a circular hole with a central diameter of 52 mm on the sealing box top plate (2). The installation gap between the lower end of the sensor bolt seat (4) and the outer plate of the hull is ≥5 mm.

2. The installation tool for a ship pulsating pressure test sensor according to claim 1, characterized in that: The two circular holes provided on the sealing box side plate (1) are symmetrically distributed on both sides of the axial center line of the sealing box side plate (1) and are used for inflation during the tightness test and for installing a pressure gauge.

3. The installation tool for a ship pulsating pressure test sensor according to claim 1, characterized in that: The welding of the tightness test seat plate (3) and the sealing box side plate (1) adopts peripheral fillet welds, and the weld foot height is 3mm.

4. The installation tool for a ship pulsating pressure test sensor according to claim 1, characterized in that: The sensor bolt seat (4) is welded in the following manner: after passing through the circular hole of the sealing box top plate (2), a 5mm end is reserved at the upper portion and fillet welded, with a weld foot height of 3mm.

5. The installation tool for a ship pulsating pressure test sensor according to claim 1, characterized in that: The bottom of the sealing box side plate (1) is temporarily fixed to a steel plate with a diameter of 200 mm through an outer fillet weld, and the inner hole of the sensor bolt seat (4) is tightened with bolts of appropriate size to form a closed space. The fillet welds between the sealing box side plate (1) and the sealing box top plate (2), the fillet welds between the sealing box side plate (1) and the sealing test seat plate (3), and the fillet welds between the sensor bolt seat (4) and the sealing box top plate (2) are tested through a tightness test. After passing the test, the steel plate is removed and the lower end of the sealing box side plate (1) is polished and smoothed.

6. The installation tool for a ship pulsating pressure test sensor according to claim 1, characterized in that: The installation tool also includes a sealing box inner plate (11); The lower end of the inner plate (11) of the sealing box is welded to the sensor bolt seat (4), and the upper end of the inner plate (11) of the sealing box is welded to the edge of the circular hole of the sealing box top plate (2), which is suitable for the installation requirements of sensors with a bolt length of ≤30mm.

7. The installation tool for a ship pulsating pressure test sensor according to claim 1, characterized in that: The sealing box side plate (1) is an open structure, and its open end is fixed to the hull component by peripheral fillet welds, and the weld tightness test pressure is ≥0.015MPa.

8. The installation tool for a ship pulsating pressure test sensor according to claim 1, characterized in that: The installation angle of the sensor bolt seat (4) is adjustable, and by changing the circular hole welding position between the sensor and the sealing box top plate (2), the sensor can be installed at an angle of 0°-45° to the hull outer plate.

9. The installation tool for a ship pulsating pressure test sensor according to claim 1, characterized in that: The welding of the sealing box side plate (1) and the sealing box top plate (2), the welding of the sealing test seat plate (3) and the sealing box side plate (1), and the welding of the sensor bolt seat (4) and the sealing box top plate (2) all adopt marine carbon steel welding materials, and the weld surface has no cracks or pore defects.

10. The installation tool for a ship pulsating pressure test sensor according to claim 1, characterized in that: When the installation tool is removed, the weld seam is cut along the bottom of the sealing box side plate (1) to retain the integrity of the sensor bolt seat (4) and the tightness test seat plate (3) for reuse in subsequent tests.

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