LNG booster pump assembly tool

Abstract

The utility model relates to the technical field of LNG booster pumps, in particular to an assembly tool for an LNG booster pump. Comprising a bottom plate, a first positioning plate and a second positioning plate are installed on the bottom plate in a spaced mode and used for supporting the two ends of a sleeve of the LNG booster pump, a baffle is installed on the portion, on one side of the first positioning plate, of the bottom plate, and a V-shaped block used for supporting a distributor is arranged between the first positioning plate and the baffle. The two positioning pins limit the radial position of the distributor, and the top of one side of the baffle is provided with a rotary gear lever through a bolt. A rotary pressing plate is mounted at the top of the second positioning plate through bolts, a supporting plate is movably mounted on the bottom plate on one side of the second positioning plate, and a rotary fixed-length plate is mounted at the top of the supporting plate through bolts.

Description

Technical fields:

[0001] This utility model relates to the field of LNG booster pump technology, and in particular to an LNG booster pump assembly fixture. Background technology:

[0002] LNG, or liquefied natural gas, is produced by cooling gaseous natural gas at atmospheric pressure to -162°C, causing it to condense into a liquid to save storage and transportation space. Currently, it is generally stored in onboard cryogenic cylinders. In use, LNG is first pumped from the cylinder using a booster pump, then vaporized to form high-pressure natural gas for vehicle use. Current LNG booster pumps, as disclosed in patent application CN118188386A, present an onboard LNG booster pump. However, the lack of specialized positioning fixtures during the assembly process has led to assembly difficulties, poor assembly accuracy, and impacted the stability of the LNG booster pump in later use. Currently, there is no good solution to these problems.

[0003] In summary, the assembly and installation of LNG booster pumps has become a pressing technical challenge that needs to be addressed within the industry. Utility model content:

[0004] To overcome the shortcomings of the prior art, this utility model provides an LNG booster pump assembly fixture, which solves the problems of difficult assembly and poor assembly accuracy in the assembly process of previous LNG booster pumps.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] An LNG booster pump assembly fixture includes a base plate on which a first positioning plate and a second positioning plate are installed at intervals. The first and second positioning plates are used to support both ends of the sleeve of the LNG booster pump. A baffle is installed on the base plate on one side of the first positioning plate. The first positioning plate and the baffle are used to limit the axial position of the distributor of the LNG booster pump. A V-block for supporting the distributor is provided between the first positioning plate and the baffle. Two positioning pins pass through the first positioning plate, the distributor, and the baffle respectively to limit the radial position of the distributor. A rotating stop bar is bolted to the top of one side of the baffle. A rotating pressure plate is bolted to the top of the second positioning plate. A support plate is movably installed on the base plate on one side of the second positioning plate. A rotating length plate is bolted to the top of the support plate.

[0007] The first positioning plate and the second positioning plate are respectively provided with arc-shaped grooves that match the shape of the sleeve.

[0008] The baffle plate is provided with a groove that matches the shape of the hydraulic cylinder flange of the LNG booster pump.

[0009] A plastic protective plate is provided between the first positioning plate and the baffle and the V-shaped block.

[0010] The base plate has an axial groove at the position corresponding to the support plate. The support plate is slidably installed in the groove, and the support plate is fixed to the base plate with bolts.

[0011] A U-shaped limiting plate that cooperates with the piston rod of the LNG booster pump is movably inserted into the bottom plate on one side of the second positioning plate.

[0012] The present invention adopts the above solution and has the following advantages:

[0013] The first and second positioning plates support both ends of the LNG booster pump sleeve. The first positioning plate and the baffle limit the axial position of the LNG booster pump distributor. Two positioning pins pass through the first positioning plate, the distributor, and the baffle respectively to limit the radial position of the distributor. The axial length of the sleeve is positioned by rotating the length plate. This allows for the installation of hydraulic cylinders, piston rods, compression cylinders, and pipelines, enabling the overall assembly of the LNG booster pump. This reduces assembly difficulty, improves assembly accuracy, and ensures the stability of the LNG booster pump in later use. Attached image description:

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0015] Figure 2 This is a three-dimensional schematic diagram of the present invention after the LNG booster pump is installed.

[0016] In the diagram, 1. Sleeve, 2. Distributor, 3. Hydraulic cylinder, 4. Compression cylinder, 5. Base plate, 6. First positioning plate, 7. Second positioning plate, 8. Baffle, 9. V-block, 10. Positioning pin, 11. Rotary stop lever, 12. Rotary pressure plate, 13. Support plate, 14. Rotary length plate, 15. Plastic protective plate, 16. U-shaped limit plate. Detailed implementation method:

[0017] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0018] like Figure 1-2As shown, an LNG booster pump assembly fixture includes a base plate 5. A first positioning plate 6 and a second positioning plate 7 are installed at intervals on the base plate 5. The first positioning plate 6 and the second positioning plate 7 are used to support both ends of the sleeve 1 of the LNG booster pump. A baffle 8 is installed on one side of the base plate 5 of the first positioning plate 6. The first positioning plate 6 and the baffle 8 are used to limit the axial position of the distributor 2 of the LNG booster pump. A V-block 9 for supporting the distributor 2 is provided between the first positioning plate 6 and the baffle 8. Two positioning pins 10 pass through the first positioning plate 6, the distributor 2 and the baffle 8 respectively to limit the radial position of the distributor 2. A rotating stop bar 11 is bolted to the top of one side of the baffle 8. A rotating pressure plate 12 is bolted to the top of the second positioning plate 7. A support plate 13 is movably installed on the base plate 5 of one side of the second positioning plate 7. A rotating length plate 14 is bolted to the top of the support plate 13.

[0019] The first positioning plate 6 and the second positioning plate 7 are respectively provided with arc-shaped grooves that match the shape of the sleeve 1. Since the diameter of the sleeve 1 at one end of the first positioning plate 6 is larger than the diameter of the second positioning plate 7, the diameter of the arc-shaped groove on the first positioning plate 6 is larger than the size of the arc-shaped groove on the second positioning plate 7, so as to match the shape of the sleeve 1.

[0020] The baffle 8 is provided with a groove that matches the flange shape of the hydraulic cylinder 3 of the LNG booster pump, which facilitates the installation of the hydraulic cylinder 3.

[0021] Plastic protective plates 15 are respectively provided between the first positioning plate 6 and the baffle 8 and the V-shaped block 9 to play a role in anti-collision protection.

[0022] The base plate 5 has an axial groove corresponding to the position of the support plate 13. The support plate 13 is slidably installed in the axial groove. The support plate 13 is fixed to the base plate 5 by bolts. The support plate 13 can drive the rotating length plate 14 to move axially, so that the rotating length plate 14 abuts against the end of the sleeve 1 to achieve the length fixing function.

[0023] A U-shaped limiting plate 16 that cooperates with the piston rod of the LNG booster pump is movably inserted into the bottom plate 5 on one side of the second positioning plate 7. During assembly, it can cooperate with the piston rod to prevent the piston rod from rotating. After assembly, it is removed.

[0024] Working principle:

[0025] During assembly, first, place the two ends of the LNG booster pump sleeve 1 on the first positioning plate 6 and the second positioning plate 7 respectively. The distributor 2 at the end of the sleeve 1 is placed between the first positioning plate 6 and the baffle 8 and supported by the V-block 9. Then, the two positioning pins 10 pass through the first positioning plate 6, the distributor 2 and the baffle 8 respectively. At this time, the axial and radial positions of the sleeve 1 and the distributor 2 are restricted and positioned. Then, align the hydraulic cylinder 3 with the distributor 2 and rotate the rotating stop 11 to the flange position of the hydraulic cylinder 3 to limit its axial movement. Then, extend the piston rod through the sleeve 1 into the hydraulic cylinder 3 for connection. Then, connect the hydraulic cylinder 3 and the distributor 2 with bolts. Then, connect the compression cylinder 4 to the other end of the piston rod. During the assembly process, the rotating pressure plate 12 can cooperate with the second positioning plate 7 to limit the other end of the sleeve 1. Then, connect the flange of the compression cylinder 4 to the sleeve 1 with bolts for assembly. Finally, connect the pipeline to complete the assembly of the LNG booster pump.

[0026] The above-described specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0027] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. An LNG booster pump assembly fixture, characterized in that: The system includes a base plate on which a first positioning plate and a second positioning plate are installed at intervals. The first and second positioning plates are used to support both ends of the sleeve of the LNG booster pump. A baffle is installed on the base plate on one side of the first positioning plate. The first positioning plate and the baffle are used to limit the axial position of the distributor of the LNG booster pump. A V-block for supporting the distributor is provided between the first positioning plate and the baffle. Two positioning pins pass through the first positioning plate, the distributor, and the baffle respectively to limit the radial position of the distributor. A rotating stop bar is bolted to the top of one side of the baffle. A rotating pressure plate is bolted to the top of the second positioning plate. A support plate is movably installed on the base plate on one side of the second positioning plate. A rotating length plate is bolted to the top of the support plate.

2. The LNG booster pump assembly tooling of claim 1, wherein: The first positioning plate and the second positioning plate are respectively provided with arc-shaped grooves that match the shape of the sleeve.

3. The LNG booster pump assembly fixture according to claim 1, characterized in that: The baffle plate is provided with a groove that matches the shape of the hydraulic cylinder flange of the LNG booster pump.

4. The LNG booster pump assembly tooling of claim 1, wherein: A plastic protective plate is provided between the first positioning plate and the baffle and the V-shaped block.

5. The LNG booster pump assembly tooling of claim 1, wherein: The base plate has an axial groove at the position corresponding to the support plate. The support plate is slidably installed in the groove, and the support plate is fixed to the base plate with bolts.

6. The LNG booster pump assembly tooling of claim 1, wherein: A U-shaped limiting plate that cooperates with the piston rod of the LNG booster pump is movably inserted into the bottom plate on one side of the second positioning plate.

Images