CN215058488U - Vibration damper for in-tank immersed pump - Google Patents
Vibration damper for in-tank immersed pump Download PDFInfo
- Publication number
- CN215058488U CN215058488U CN202121362798.6U CN202121362798U CN215058488U CN 215058488 U CN215058488 U CN 215058488U CN 202121362798 U CN202121362798 U CN 202121362798U CN 215058488 U CN215058488 U CN 215058488U
- Authority
- CN
- China
- Prior art keywords
- pump
- tank
- cylinder body
- hydraulic cylinder
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses submerged pump vibration damper in jar relates to low temperature submerged pump technical field, especially relates to centering and vibration damper who is applicable to submerged pump in LNG jar. The in-tank immersed pump vibration damping devices of the utility model are at least three and are uniformly distributed on the outer edge of the upper end of the in-tank immersed pump; a hydraulic rod of the in-tank immersed pump damping device is arranged in the hydraulic cylinder body; the spring is sleeved on the hydraulic rod; the threaded connecting piece is connected with the hydraulic cylinder body through threads, the rear end of the hydraulic rod and the spring are packaged in the hydraulic cylinder body, and meanwhile, the hydraulic cylinder body forms a sealed cavity. The high-pressure liquid inlet and outlet on the hydraulic cylinder body is communicated with the outlet of the in-tank immersed pump, and the low-pressure liquid inlet and outlet is communicated with one of the suction side and the low-pressure side of the in-tank immersed pump; high and low pressure is formed to push the hydraulic rod to move. The technical scheme of the utility model solved among the prior art because pump and bottom valve installation are not the centering, lead to appearing that the pump package vibration is big, reduce pump life's problem.
Description
Technical Field
The utility model discloses submerged pump vibration damper in jar relates to low temperature submerged pump technical field, especially relates to centering and vibration damper who is applicable to submerged pump in LNG jar.
Background
At present, an LNG tank immersed pump is arranged on a bottom valve of a pump well at the bottom of a storage tank, and the depth of the pump well is as long as 40 meters. The pump well is a steel pipe welding part, the inner wall of the pump well is not smooth, and the pump well cannot be in rigid contact fit. The guide wheels are arranged on the periphery of the pump, gaps are formed between the guide wheels and the pump well, the pump and the pump well can be prevented from colliding, the guide wheels only play a role in collision prevention but cannot be supported, and the phenomenon of misalignment often occurs when the pump and a bottom valve are installed. Misalignment can result in large pump set vibration and reduced pump service life.
Aiming at the problems in the prior art, a novel in-tank immersed pump damping device is researched and designed, so that the problem in the prior art is very necessary to be overcome.
Disclosure of Invention
According to the technical problems that the pump group vibrates greatly and the service life of the pump is shortened due to the fact that the pump and the bottom valve are not installed in a centering mode in the prior art, and the in-tank immersed pump vibration damping device is provided. The utility model mainly introduces the inlet pressure and the outlet pressure of the submersible pump in the tank into the vibration damper, when the pump set operates, pressure difference is formed in the vibration damper, the hydraulic piston in the vibration damper is pushed to move, the valve rod is supported in contact with the pump well, and meanwhile, the vibration of the pump set is buffered through the compression deformation of the spring in the vibration damper, so that the vibration of the pump set is reduced; when the pump is installed or stops running, the pressure difference in the pressure reducing device disappears, the spring extends, the hydraulic rod contracts and is separated from the pump well, and the disassembly and the assembly of the pump are not influenced. The device can reduce the vibration of the pump and improve the operation stability of the pump set.
The utility model discloses a technical means as follows:
at least three in-tank immersed pump vibration damping devices are uniformly distributed on the outer edge of the upper end of an in-tank immersed pump;
further, the in-tank immersed pump vibration damping device includes: the hydraulic cylinder body, the hydraulic rod, the spring and the threaded connecting piece;
furthermore, the hydraulic cylinder body is arranged on the outer edge of the upper end of the shell of the in-tank immersed pump;
further, the hydraulic rod is arranged inside the hydraulic cylinder body;
furthermore, the spring is sleeved on the hydraulic rod, and the deformation of the spring can adjust the length of the extending end of the hydraulic rod;
furthermore, the threaded connecting piece is connected with the hydraulic cylinder body through threads, the rear end of the hydraulic rod and the spring are packaged in the hydraulic cylinder body, and meanwhile the hydraulic cylinder body forms a sealed cavity.
Further, a high-pressure liquid inlet and outlet and a low-pressure liquid inlet and outlet are arranged on the hydraulic cylinder body;
further, the high-pressure liquid inlet and outlet is communicated with an outlet of the in-tank immersed pump, and the low-pressure liquid inlet and outlet is communicated with one of a suction side and a low-pressure side of the in-tank immersed pump; high and low pressure is formed to push the hydraulic rod to move.
Furthermore, a sealing element A is arranged between the hydraulic rod and the hydraulic cylinder body, so that the sealing property between the front high-pressure cavity and the rear low-pressure cavity of the hydraulic cylinder body is ensured.
Furthermore, a sealing element B is arranged at the position where the low-pressure liquid inlet and outlet is connected with the suction side (the bottom pressure of the storage tank) or the low-pressure side (the front stages in the multi-stage pump) of the submerged pump in the tank, so that the situations of liquid leakage and pressure release at the low-pressure liquid inlet and outlet are prevented.
Furthermore, the outer edge of the lower end of the shell of the in-tank immersed pump is also not provided with at least three vibration reduction devices of the in-tank immersed pump;
furthermore, when the in-tank immersed pump runs, a pressure difference is formed between a high pressure cavity and a low pressure cavity in the hydraulic cylinder body, the hydraulic rod is pushed to extend outwards, the hydraulic rod is ensured to be in contact with a pump well, the in-tank immersed pump and the bottom valve are automatically adjusted to be concentric, and meanwhile, the pump set is buffered to vibrate through the compression deformation of a spring in the vibration damping device, so that the vibration damping effect is achieved; when the pump is installed or stops operating, the pressure difference in the pressure reducing device disappears, the hydraulic rod contracts under the action of the spring and is separated from the pump well, and the disassembly and the assembly of the pump are not influenced.
Compared with the prior art, the utility model has the advantages of it is following:
1. the utility model provides an in-tank immersed pump vibration damper, through introducing the inlet pressure (or the first few level pressure of multistage pump) and the export pressure of in-tank immersed pump in the vibration damper, when the pump package operates, form pressure differential in the vibration damper, promote the interior hydraulic piston motion of vibration damper, the pump package is automatic with bottom valve aligning centering, simultaneously through the compression deformation of the spring in the vibration damper, cushion the pump package vibration, thereby reduce the pump package vibration;
2. the utility model provides an in-tank immersed pump vibration damper installs in tank immersed pump upper end and lower extreme (or only the upper end), and when the pump operation, vibration damper and pump well contact prevent the pump body swing, improve the reliable performance of pump package, prolong the life of pump package.
To sum up, use the technical scheme of the utility model the centering is not installed owing to pump and bottom valve among the prior art to have solved, and it is big to lead to appearing the pump package vibration, reduces pump life's problem.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
In the figure:
fig. 1 is a schematic view of the axial installation position of the present invention;
fig. 2 is a schematic view of the radial installation position of the present invention;
FIG. 3 is an enlarged view of section I of FIG. 1;
FIG. 4 is a schematic cross-sectional view of the present invention in a non-operating state;
FIG. 5 is a schematic top view of the present invention in a non-operating state;
FIG. 6 is a schematic cross-sectional view of the working state of the present invention;
fig. 7 is a schematic top view of the working state of the present invention.
In the figure: 1. a hydraulic cylinder block; 2. a high-pressure liquid inlet and outlet; 3. a seal member A; 4. a hydraulic lever; 5. a spring; 6. a low-pressure liquid inlet and outlet; 7. a threaded connection; 8. and a sealing member B.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
As shown in the figure, the utility model provides at least three in-tank immersed pump vibration damping devices which are uniformly arranged on the outer edge of the upper end of the in-tank immersed pump; the in-tank immersed pump damping device comprises: the hydraulic cylinder body 1, the hydraulic rod 4, the spring 5 and the threaded connecting piece 7; the hydraulic cylinder body 1 is arranged on the outer edge of the upper end of the shell of the submerged pump in the tank; the hydraulic rod 4 is arranged inside the hydraulic cylinder body 1; the spring 5 is sleeved on the hydraulic rod 4, and the deformation of the spring can adjust the length of the extending end of the hydraulic rod; the threaded connecting piece 7 is connected with the hydraulic cylinder body 1 through threads, the rear end of the hydraulic rod 4 and the spring 5 are packaged in the hydraulic cylinder body 1, and meanwhile the hydraulic cylinder body 1 forms a sealed cavity.
The hydraulic cylinder body 1 is provided with a high-pressure liquid inlet and outlet 2 and a low-pressure liquid inlet and outlet 6; the high-pressure liquid inlet and outlet 2 is communicated with an outlet of the in-tank immersed pump, and the low-pressure liquid inlet and outlet 6 is communicated with one of a suction side (the bottom pressure of the storage tank) and a low-pressure side (the front stages in the multi-stage pump) of the in-tank immersed pump; high and low pressure is formed to push the hydraulic rod 4 to move.
A sealing member A3 is arranged between the hydraulic rod 4 and the hydraulic cylinder body 1 to ensure the sealing performance between the front and the rear high-low pressure cavities of the hydraulic cylinder body 1.
The position that low pressure business turn over liquid mouth 6 and jar immersed pump suction side or low pressure side are connected is provided with sealing member B8, prevents that the condition of weeping, pressure release from appearing in low pressure business turn over liquid mouth 6 from taking place.
When the in-tank immersed pump operates, a high-pressure cavity and a low-pressure cavity are formed in the hydraulic cylinder body 1, the high-pressure cavity is in pressure connection with an outlet of a pump set, the low-pressure cavity is in pressure connection with an inlet of the pump set to form pressure difference, the hydraulic rod 4 is pushed to extend outwards to ensure that the hydraulic rod 4 is in contact with a pump well, the in-tank immersed pump is automatically adjusted to be concentric with a bottom valve, and meanwhile, the pump set is buffered to vibrate through the compression deformation of a spring in the vibration damping device, so that the vibration damping effect is achieved; when the pump is installed or stops operating, the pressure difference in the pressure reducing device disappears, the hydraulic rod contracts under the action of the spring and is separated from the pump well, and the disassembly and the assembly of the pump are not influenced.
The vibration damper is installed at the upper end and the lower end of the immersed pump in the tank (or only 3 vibration dampers are uniformly installed at the upper end respectively, when the pump runs, the vibration damper is in contact with the pump well, the pump body is prevented from swinging, the reliability of the pump group is improved, and the service life of the pump group is prolonged.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides an in-tank immersed pump damping device which characterized in that:
the number of the in-tank immersed pump vibration reduction devices is at least three, and the three in-tank immersed pump vibration reduction devices are uniformly distributed on the outer edge of the upper end of the in-tank immersed pump;
the in-tank immersed pump damping device comprises: the hydraulic cylinder body (1), the hydraulic rod (4), the spring (5) and the threaded connecting piece (7);
the hydraulic cylinder body (1) is arranged on the outer edge of the upper end of the shell of the in-tank immersed pump;
the hydraulic rod (4) is arranged in the hydraulic cylinder body (1);
the spring (5) is sleeved on the hydraulic rod (4), and the deformation of the spring can adjust the length of the extending end of the hydraulic rod;
the threaded connecting piece (7) is connected with the hydraulic cylinder body (1) through threads, the rear end of the hydraulic rod (4) and the spring (5) are packaged in the hydraulic cylinder body (1), and meanwhile the hydraulic cylinder body (1) forms a sealed cavity.
2. The in-tank submersible pump damping device of claim 1, wherein:
the hydraulic cylinder body (1) is provided with a high-pressure liquid inlet and outlet (2) and a low-pressure liquid inlet and outlet (6);
the high-pressure liquid inlet and outlet (2) is communicated with an outlet of the submerged pump in the tank, and the low-pressure liquid inlet and outlet (6) is communicated with one of the suction side and the low-pressure side of the submerged pump in the tank; high and low pressure is formed to push the hydraulic rod (4) to move.
3. The in-tank submersible pump damping device of claim 2, wherein:
a sealing element A (3) is arranged between the hydraulic rod (4) and the hydraulic cylinder body (1) to ensure the sealing property between the front and the rear high-low pressure cavities of the hydraulic cylinder body (1).
4. The in-tank submersible pump damping device of claim 2, wherein:
and a sealing element B (8) is arranged at the position where the low-pressure liquid inlet/outlet (6) is connected with the suction side or the low-pressure side of the immersed pump in the tank, so that the conditions of liquid leakage and pressure relief of the low-pressure liquid inlet/outlet (6) are prevented.
5. The in-tank submersible pump damping device of claim 1, wherein:
the outer edge of the lower end of the shell of the in-tank immersed pump is also provided with at least three in-tank immersed pump damping devices;
when the in-tank immersed pump operates, a pressure difference is formed between a high pressure cavity and a low pressure cavity in the hydraulic cylinder body (1), the hydraulic rod (4) is pushed to extend outwards, the hydraulic rod (4) is ensured to be in contact with a pump well, the in-tank immersed pump and the bottom valve are automatically adjusted to be concentric, and meanwhile, the pump set is buffered to vibrate through the compression deformation of a spring in the vibration damping device, so that the vibration damping effect is achieved; when the pump is installed or stops operating, the pressure difference in the pressure reducing device disappears, the hydraulic rod contracts under the action of the spring and is separated from the pump well, and the disassembly and the assembly of the pump are not influenced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121362798.6U CN215058488U (en) | 2021-06-18 | 2021-06-18 | Vibration damper for in-tank immersed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121362798.6U CN215058488U (en) | 2021-06-18 | 2021-06-18 | Vibration damper for in-tank immersed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215058488U true CN215058488U (en) | 2021-12-07 |
Family
ID=79204201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121362798.6U Active CN215058488U (en) | 2021-06-18 | 2021-06-18 | Vibration damper for in-tank immersed pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215058488U (en) |
-
2021
- 2021-06-18 CN CN202121362798.6U patent/CN215058488U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204553199U (en) | A kind of plunger pump clack box assembly | |
| CN215058488U (en) | Vibration damper for in-tank immersed pump | |
| CN104024641A (en) | Pump with double- suction impeller generating axial thrust | |
| US9695970B2 (en) | Composite pulsation dampener | |
| CN205779219U (en) | A kind of depassing unit being applied to engine water pump | |
| CN113446266A (en) | Vibration damper for in-tank immersed pump | |
| US20150118070A1 (en) | Automatic draining system | |
| CN214331055U (en) | Hydraulic cylinder unloading structure | |
| CN210993276U (en) | Filtrate discharge system of ceramic filter | |
| CN205601823U (en) | Automobile brake hydraulic pressure auxiliary device and branch fuel tap | |
| CN211082368U (en) | Submersible pump mechanical seal pressure reducing mechanism | |
| CN211474349U (en) | Plunger pump oil liquid buffer structure and plunger pump with same | |
| CN110685923A (en) | Composite strong self-suction centrifugal pump set | |
| CN201535257U (en) | Vertical tube bag type coagulated water pump | |
| CN206429594U (en) | A kind of hydraulic type automobile damper | |
| CN208431230U (en) | A kind of novel gas-liquid buffer base installs and designs and processing | |
| CN211344345U (en) | Pipe connection structure of cooling filter on vacuum pumping device | |
| CN104047848A (en) | Vortex air compressor with built-in suction valve | |
| CN217501954U (en) | Constant-flow pump, automatic cleaning system for plunger rod of constant-flow pump and pumping system | |
| CN107235451A (en) | A kind of low delay for level Four above door frame starts and leaks cushion cylinder in anti- | |
| CN211174659U (en) | Cylindrical valve power connector with buffer device and cylindrical valve thereof | |
| CN103511229B (en) | Diaphragm-type reciprocating pump pump head integrated form mounting structure | |
| CN217129776U (en) | Integrated form screw pump | |
| CN202118311U (en) | Gravity check valve | |
| CN215211311U (en) | Box type waterproof mute water supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |