Method for installing long-range liquid level meter on original interface and liquid level meter assembly

Abstract

A method for installing a long-range liquid level meter on the basis of the original interface and a liquid level meter assembly, the steps are as follows: a first valve block is installed at the original interface flange position of the container, an L-shaped pressure equalizing pipe is installed inside the container, the short end of the pressure equalizing pipe passes through the center hole of the upper interface flange of the container, the upper through hole of the first valve block in sequence and is fixed by a fastening assembly, a second valve block is installed in cooperation on the first valve block, a lower flow channel hole is arranged at the lower end of the second valve block corresponding to the lower interface flange, a blind hole is arranged on the second valve block corresponding to the upper interface flange, an upper flow channel hole is arranged at the upper end of the second valve block, the upper flow channel hole and the blind hole are connected in communication through a flow channel arranged on the second valve block, and the upper flow channel hole is the installation position of the upper port of the new liquid level meter; the scheme can realize that the original container main body structure is not damaged, a pressure equalizing pipe and a pair of valve blocks are installed, the installation size of the liquid level meter is changed, and the new long-range liquid level meter can be quickly installed on the original container.

Description

Technical Field

[0001] The invention relates to the technical field of liquid level measurement applications, and in particular to a method for adding a long-range liquid level gauge to an original interface and a liquid level gauge assembly. Background Art

[0002] Currently, liquid level gauges are widely used in fields such as machinery, electricity, pharmaceuticals, and chemicals. Liquid level gauges are connected in parallel to the sides of containers such as gearboxes, oil tanks, and reactors to conveniently display the liquid level inside the container. In previous designs, most liquid level gauges were used to indicate low liquid levels. However, with the demand and development of industrialization and intelligentization, the liquid level ranges that need to be monitored have become larger than before. For existing mechanical equipment, such as wind turbine gearboxes and large reactors, the only way to replace them is to redesign and remanufacture the equipment, which is very costly. How to quickly replace the existing equipment with a long-range liquid level gauge based on its interface to reduce costs is a technical problem that urgently needs to be solved. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a method for installing a long-range liquid level gauge on the basis of the original interface and a liquid level gauge assembly.

[0004] The technical solution adopted by the present invention is: a method of adding a long-range liquid level gauge on the basis of the original interface, the steps are as follows:

[0005] S1. Install the first valve block at the original interface flange position of the container. Align the two through holes on the first valve block with the two interface flanges on the container and then fix them to the original interface flanges using a fastening assembly.

[0006] S2. Install an L-shaped pressure-equalizing tube inside the container, with the long end of the tube located at the upper port of the container. The short end of the tube passes through the center hole of the upper interface flange of the container and the upper through hole of the first valve block in sequence, and is secured by a fastening assembly, ensuring that the connection at the short end of the tube is sealed.

[0007] S3. A second valve block is mounted on the first valve block. The first valve block and the second valve block are sealed together via a sealing assembly and a fastening assembly. A lower flow channel hole is provided at the lower end of the second valve block, corresponding to the lower interface flange of the container. A blind hole is provided on the second valve block, corresponding to the upper interface flange of the container. An upper flow channel hole is provided on the upper end of the second valve block. The upper flow channel hole and the blind hole are connected via a flow channel provided on the second valve block.

[0008] S4. Install the two ports of the long-range liquid level gauge at the positions of the downflow hole and the upflow hole of the second valve block respectively.

[0009] As a preferred embodiment, the liquid level gauge assembly includes a long-range liquid level gauge, a valve body consisting of a first valve block and a second valve block, a pressure equalizing tube and several connecting parts, the first valve block has an upper through hole and a lower through hole, the two through holes respectively corresponding to the two interface flange positions on the container, the first valve block is fixed to the interface flange of the container by a fastening assembly, the pressure equalizing tube is L-shaped, its long end is located at the upper port of the container, and its short end passes through the center hole of the upper interface flange of the container and the upper through hole of the first valve block in sequence and is fixed by the fastening assembly, the second valve block is installed on the first valve block through a seal and a connecting part and forms an integral structure with the first valve block, a lower flow channel hole is provided at the lower end of the second valve block corresponding to the lower interface flange of the container, a blind hole is provided on the second valve block corresponding to the upper interface flange of the container, an upper flow channel hole is provided at the upper end of the second valve block, the upper flow channel hole and the blind hole are connected by a flow channel arranged on the second valve block, and the two ports of the long-range liquid level gauge are respectively installed at the lower flow channel hole and the upper flow channel hole positions of the second valve block.

[0010] As a preferred solution, the short end of the pressure equalizing tube is provided with a positioning boss, and a conformal gasket is provided on the positioning boss. The short end of the pressure equalizing tube passes through the conformal gasket, the center hole of the upper interface flange of the container wall, the first valve block and the sealing ring in sequence and is then fixed by fasteners.

[0011] As a preferred solution, one side of the conformable gasket is a plane and cooperates with the positioning boss, and the other side is a curved surface and cooperates with the inner wall of the container.

[0012] As a preferred solution, a groove for installing a sealing strip is provided on the surface of the first valve block.

[0013] As a preferred solution, a groove for installing a sealing strip is provided on the inner surface of the second valve block at a position corresponding to the groove on the first valve block. After the first valve block and the second valve block are matched, the connection between the first valve block and the second valve block is sealed by installing a sealing strip in the corresponding groove.

[0014] As a preferred solution, the lower flow channel hole on the second valve block is a stepped hole, the large end hole of the stepped hole is used to accommodate accessories such as fastening bolts of the lower interface flange, and the small end hole is aligned with the center hole of the original lower interface flange.

[0015] As a preferred solution, the blind hole on the second valve block is used to accommodate accessories such as fastening bolts of the upper interface flange, and the center of the blind hole is aligned with the center hole of the upper interface flange of the container. A flow channel is opened above the blind hole to lead the channel of the center hole of the upper interface flange to the upper flow channel hole of the second valve block through the flow channel.

[0016] As a preferred solution, a threaded connection section is provided at the short end of the pressure equalizing tube, and a straight groove is provided on the end surface of the threaded connection section.

[0017] The beneficial effects of the present invention are:

[0018] This solution optimizes the structure of the level gauge assembly, allowing it to be installed on the original container without destroying the main structure of the container. By adding a pressure equalizing tube and a pair of valve blocks, the installation dimensions of the level gauge are changed, allowing the new long-range level gauge to be quickly installed on the original container. The main technical effects are reflected in the following aspects:

[0019] First, this method can be used to modify existing equipment that needs to modify the liquid level display height, without having to redesign, manufacture, install, and other operations, thus saving costs.

[0020] Secondly, the valve block of the level gauge assembly can be designed to match the newly selected level gauge, which is convenient for the later replacement of the level gauge.

[0021] Third, through the deformation design of the liquid level gauge component, the installation position of the new liquid level and the reading angle can be replaced.

[0022] Fourthly, the interface between the valve block in the rental of the liquid level meter and the newly installed liquid level meter can be flexibly designed to adapt to interfaces of various forms and sizes, and has higher applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the location of the liquid level gauge installation hole before modification;

[0025] Figure 2 This is the installation diagram of the modified long-range liquid level gauge;

[0026] Figure 3 This is a schematic diagram of the container after removing the barrel cover and internal accessories;

[0027] Figure 4 Schematic diagram of the structure of the first valve block;

[0028] Figure 5 Schematic diagram of the structure of the pressure equalizing tube;

[0029] Figure 6 A partial enlarged view of the first valve block installed on the container wall;

[0030] Figure 7 Schematic diagram of the internal structure of the second valve block.

[0031] Description of the drawings: 1. Container wall, 2. Upper interface flange, 3. Lower interface flange, 4. First valve block, 41. First valve block body, 42. Sealing ring groove, 43. Valve closing bolt hole, 44. Flange connection hole, 45. Upper through hole, 46. Lower through hole, 5. Second valve block, 51. Second valve block body, 52. Bolt hole, 53. Sealing ring groove, 54. Lower flow channel hole, 56. Blind hole, 57. Flow channel, 58. Upper flow channel hole, 6. Long-range liquid level gauge, 7. Equalizing pressure tube, 71. Long end of equalizing pressure tube, 72. Positioning boss, 73. Threaded connection section, 74. Directional fastening groove, 8. Conformal gasket, 9. Thin nut. DETAILED DESCRIPTION

[0032] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description.

[0033] It should be noted that: unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons having ordinary skills in the field to which the invention belongs. The words "one", "an" or "the" and the like used in the patent application specification and claims of the present invention do not express a quantitative limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" indicate that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, but do not exclude other elements or objects with the same function.

[0034] A method for adding a long-range liquid level gauge to the original interface, the steps are as follows:

[0035] Step 1: Install the first valve block at the original interface flange position of the container. Align the two through holes on the first valve block with the two interface flanges on the container and then fix them to the original interface flanges through fastening components.

[0036] Step 2: Install an L-shaped pressure-equalizing tube inside the container, with the long end of the pressure-equalizing tube located at the upper port of the container. The short end of the pressure-equalizing tube passes through the center hole of the upper interface flange of the container and the upper through hole of the first valve block in sequence and is fixed by a fastening assembly, so that the connection of the short end of the pressure-equalizing tube is in a sealed state.

[0037] Step 3: Install the second valve block on the first valve block. The first valve block and the second valve block are sealed together by a sealing assembly and a fastening assembly. A lower flow channel hole is provided at the lower end of the second valve block corresponding to the lower interface flange of the container. A blind hole is provided on the second valve block corresponding to the upper interface flange of the container. An upper flow channel hole is provided on the upper end of the second valve block. The upper flow channel hole and the blind hole are connected via a flow channel provided on the second valve block.

[0038] Step 4: Install the two ports of the long-range liquid level gauge at the positions of the downflow hole and the upflow hole of the second valve block respectively.

[0039] like Figure 1-7 As shown, the liquid level gauge assembly used in the above method includes a first valve block 4, a second valve block 5, a pressure equalizing tube 7, a long-range liquid level gauge 6, a sealing ring and a plurality of fastening bolts;

[0040] The first valve block 4 is provided with an upper through hole 45 and a lower through hole 46 on its first valve block body 41. The two through holes correspond to the positions of the two interface flanges on the container, and flange connection holes 44 matching the original interface flanges are evenly distributed around the two through holes. After the two through holes of the first valve block are aligned with the center holes of the two interface flanges in the original container, they are fixed to the original interface flanges via fastening bolts.

[0041] The pressure-equalizing tube 7 is installed inside the container to balance the pressure at the upper end of the liquid level gauge and the upper end of the container. It is L-shaped, with the long end 71 of the pressure-equalizing tube close to the top port of the container. The short end of the pressure-equalizing tube is provided with a positioning boss 72, and a conformal gasket 8 is provided on the positioning boss 72. The short end of the pressure-equalizing tube passes through the conformal gasket 8, the center hole of the upper interface flange 2 of the container wall, the upper through hole of the first valve block and the sealing ring in sequence, and is then fixed with a thin nut 9; in order to ensure the installation direction of the pressure-equalizing tube 7 and facilitate the tightening of the thin nut that cooperates with it, the short end of the pressure-equalizing tube is provided with a threaded connection section 73, and a straight-shaped directional fastening groove 74 is provided on the end face of the threaded connection section 73;

[0042] The surface of the first valve block body 41 is provided with a sealing ring groove 42 for installing a sealing member and a valve closing bolt hole 43. The inner surface of the second valve block body 51 is also provided with a sealing ring groove 53 at a position corresponding to the sealing ring groove 42 on the first valve block body 41. When the first valve block 4 and the second valve block 4 are closed by the connecting member, a sealing strip is installed in the corresponding sealing ring groove to achieve sealing at the connection between the first valve block 4 and the second valve block 5.

[0043] A lower flow channel hole 54 is opened at the lower part of the interior of the second valve block 5. The lower flow channel hole 54 is a stepped hole. The large end hole of the stepped hole is used to accommodate accessories such as the fastening bolts of the lower interface flange, and the small end hole of the stepped hole is aligned with the center hole of the original lower interface flange 3; a blind hole 56 is opened above the second valve block to accommodate accessories such as the fastening bolts of the upper interface flange, and the center of the blind hole 56 is aligned with the center hole of the upper interface flange 2 of the container. A flow channel 57 is opened above the blind hole 56, which leads the channel of the original upper flange center hole to the upper flow channel hole 58 of the second valve block 5 through the flow channel. The position of the upper flow channel hole 58 is the upper installation position of the new liquid level gauge.

[0044] Based on the above structure, two new liquid level gauge mounting holes are formed on the outside of the second valve block. Each mounting hole is surrounded by threaded holes for mating with the flange holes of the replacement liquid level gauge.

[0045] In this solution, the second valve block and the first valve block are tightened by hexagon socket bolts.

[0046] In this solution, one side of the conformable gasket 8 is a flat surface that fits with the positioning boss, and the other side is a curved surface that fits with the inner wall of the container.

[0047] Example 1

[0048] Taking the reactor as an example, the design and installation process of the liquid level gauge assembly is described in detail as follows:

[0049] The upper through hole 45 and the lower through hole 46 of the first valve block 4, as well as the surrounding flange bolt holes 44, are designed based on the flange hole of the original liquid level gauge. The outer length of the first valve block is designed according to the size of the replaced liquid level gauge, and a Japanese-shaped sealing ring groove 42 is opened inside the first valve block, and the valve bolt hole 43 is designed together with the second valve block.

[0050] The blind hole 56 and stepped lower flow channel hole 54 of the second valve block are designed based on the position of the flange bolts on the first valve block, so that both can accommodate the position occupied by the flange bolts and avoid assembly interference. The size of the small hole end of the flow channel 57, upper flow channel hole 58, and lower flow channel hole 54 are designed based on the size of the replacement level gauge.

[0051] The pressure equalizing tube 7 is designed according to the height of the container to be measured.

[0052] The conformable gasket 8 is designed according to the internal structure of the container.

[0053] During installation, first align the upper and lower through holes of the first valve block 4 with the installation flange of the liquid level gauge of the original container, put on the seal, and then install it on the flange of the original container. Put the conformal washer 8 on the short end of the equalizing tube 7, ensuring that the flat surface of the conformal washer 8 is in close contact with the positioning boss 72 of the equalizing tube, and the conformal curved surface of the conformal washer 8 is in close contact with the inner wall of the container. The short end of the equalizing tube 7 passes through the upper interface flange 2 and is fixed with a thin nut 9. Note that the directional fastening groove 74 of the equalizing tube 7 is fixed with a flat-blade screwdriver to make the equalizing tube 7 vertical, and tighten the thin nut 9. Place the Japanese-shaped sealing ring into the sealing ring groove 42 of the first valve block 4, install the second valve block 5, and fasten the second valve block 5 to the first valve block 4 with the hexagon socket bolt through the countersunk hole. Finally, install the new liquid level gauge at the two interfaces shown in the threaded hole 59, and the installation is complete.

[0054] The parts not described in detail in this invention are prior art.

[0055] It should be noted that although the present invention has been described with reference to the above embodiments, the present invention may also have other various embodiments. Without departing from the spirit and scope of the present invention, it is obvious that those skilled in the art may make various corresponding changes and modifications to the present invention, and such changes and modifications shall fall within the scope of protection of the appended claims and their equivalents.

Claims

1. A method for adding a long-range liquid level gauge to an original interface, characterized in that: The liquid level gauge assembly used in this method includes a long-range liquid level gauge, a valve body consisting of a first valve block and a second valve block, a pressure equalizing tube and several connecting parts, the first valve block has an upper through hole and a lower through hole, the two through holes respectively corresponding to the positions of two interface flanges on the container, the first valve block is fixed at the interface flange of the container by a fastening assembly, the pressure equalizing tube is L-shaped, its long end is located at the upper port of the container, and its short end passes through the center hole of the upper interface flange of the container and the upper through hole of the first valve block in sequence and is fixed by the fastening assembly, the second valve block is installed on the first valve block through a sealing member and a connecting member and forms an integral structure with the first valve block, a lower flow channel hole is provided at the lower end of the second valve block corresponding to the lower interface flange of the container, a blind hole is provided on the second valve block corresponding to the upper interface flange of the container, an upper flow channel hole is provided at the upper end of the second valve block, the upper flow channel hole and the blind hole are connected by a flow channel arranged on the second valve block, and the two ports of the long-range liquid level gauge are respectively installed at the lower flow channel hole and the upper flow channel hole positions of the second valve block; the steps are as follows: S1. Install the first valve block at the original interface flange position of the container. Align the two through holes on the first valve block with the two interface flanges on the container and then fix them to the original interface flanges using a fastening assembly. S2. Install an L-shaped pressure-equalizing tube inside the container, with the long end of the tube located at the upper port of the container. The short end of the tube passes through the center hole of the upper interface flange of the container and the upper through hole of the first valve block in sequence, and is secured by a fastening assembly, ensuring that the connection at the short end of the tube is sealed. S3. A second valve block is mounted on the first valve block. The first valve block and the second valve block are sealed together via a sealing assembly and a fastening assembly. A lower flow channel hole is provided at the lower end of the second valve block, corresponding to the lower interface flange of the container. A blind hole is provided on the second valve block, corresponding to the upper interface flange of the container. An upper flow channel hole is provided on the upper end of the second valve block. The upper flow channel hole and the blind hole are connected via a flow channel provided on the second valve block. S4. Install the two ports of the long-range liquid level gauge at the positions of the downflow hole and the upflow hole of the second valve block respectively.

2. The method according to claim 1, wherein: The short end of the pressure equalizing tube is provided with a positioning boss, on which a conformal gasket is provided. The short end of the pressure equalizing tube passes through the conformal gasket, the center hole of the upper interface flange of the container wall, the first valve block and the sealing ring in sequence and is then fixed by fasteners.

3. The method according to claim 2, wherein: One side of the conformable gasket is a plane and cooperates with the positioning boss, and the other side is a curved surface and cooperates with the inner wall of the container.

4. The method according to claim 1, wherein: A groove for installing a sealing strip is provided on the surface of the first valve block.

5. The method according to claim 4, characterized in that: A groove for installing a sealing strip is provided on the inner surface of the second valve block at a position corresponding to the groove on the first valve block. After the first valve block and the second valve block are matched, the connection between the first valve block and the second valve block is sealed by installing a sealing strip in the corresponding groove.

6. The method according to claim 1, wherein: The lower flow channel hole on the second valve block is a stepped hole, and the small end hole of the stepped hole is aligned with the center hole of the original lower interface flange.

7. The method according to claim 1, wherein: The center of the blind hole is aligned with the center hole of the upper interface flange of the container. A flow channel is opened above the blind hole to guide the channel of the center hole of the upper interface flange to the upper flow channel hole of the second valve block through the flow channel.

8. The method according to claim 1, wherein: A threaded connection section is provided at the short end of the pressure equalizing tube, and a straight groove is provided on the end surface of the threaded connection section.

Images