CN215370200U - Pressure detection and regulation structure for plunger sealing cavity of reciprocating pump - Google Patents
Pressure detection and regulation structure for plunger sealing cavity of reciprocating pump Download PDFInfo
- Publication number
- CN215370200U CN215370200U CN202121865802.0U CN202121865802U CN215370200U CN 215370200 U CN215370200 U CN 215370200U CN 202121865802 U CN202121865802 U CN 202121865802U CN 215370200 U CN215370200 U CN 215370200U
- Authority
- CN
- China
- Prior art keywords
- plunger
- sealing cavity
- oil
- pressure detection
- reciprocating pump
- 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
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a pressure detection and adjustment structure for a plunger sealing cavity of a reciprocating pump, wherein the reciprocating pump comprises a pump body (1), a box body (2), a plunger (3), a plunger sealing cavity (4) and an oil storage bin (5), the oil storage bin (5) is connected with the plunger sealing cavity (4) through an oil inlet pipeline (6), the plunger sealing cavity (4) is connected with an oil outlet main pipeline (8) arranged outside the pump body (1) through an oil outlet pipeline (7) inside the pump body (1), and an electromagnetic valve (9) is arranged on the oil outlet main pipeline (8); the oil storage bin (5) is connected with a first pressure detection transmitter (10), and the oil outlet main pipeline (8) is connected with a second pressure detection transmitter (11). The utility model has the advantage that the pressure of the plunger sealing cavity can be detected and adjusted in real time in the running process of the reciprocating pump.
Description
Technical Field
The utility model relates to the technical field of reciprocating pumps, in particular to a pressure detection and adjustment structure for a plunger sealing cavity of a reciprocating pump.
Background
Because the plunger at the hydraulic end of the reciprocating pump needs to frequently reciprocate in the plunger cavity of the pump body, a lubricating oil film needs to be arranged between the plunger and the filler, meanwhile, an oil storage tank is also arranged outside the pump body to supplement oil to the plunger sealing cavity in real time so as to continuously form the oil film, when the linearity of the movement of the plunger is reduced, the sealing performance of the plunger filler oil film is reduced, the plunger can bring out a leaked medium (generally water), because the density of the water is higher than that of the oil, the leaked water can be stored in an oil-water exchange tube, when the water level in the oil-water exchange tube is continuously increased, the sealing performance of the oil film between the plunger and the filler can be damaged, so that the problems of plunger abrasion and filler leakage are more solved, in order to realize the operation of the plunger under low friction power consumption, the pressure of the oil supplementing or releasing of the oil-water exchange tube to the plunger sealing cavity is judged by human experience at present, neither the timeliness nor the accuracy is ideal enough, and the faults near the plunger are easy to occur. Therefore, a countermeasure is needed to adjust the pressure of the plunger seal cavity of the reciprocating pump in real time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pressure detection and adjustment structure for a plunger sealing cavity of a reciprocating pump. The utility model has the advantage that the pressure of the plunger sealing cavity can be detected and adjusted in real time in the running process of the reciprocating pump.
The technical scheme of the utility model is as follows: a pressure detection and regulation structure for a plunger sealing cavity of a reciprocating pump comprises a pump body, a box body, a plunger sealing cavity and an oil storage bin, wherein the oil storage bin is connected with the plunger sealing cavity through an oil inlet pipeline; the oil storage bin is connected with a first pressure detection transmitter, and the oil outlet main pipeline is connected with a second pressure detection transmitter.
Compared with the prior art, the utility model has the beneficial effects that: the electromagnetic valve is arranged on the oil outlet main pipeline of the plunger sealing cavity, the pressure detection transmitter is arranged on the oil storage bin and the oil outlet main pipeline, real-time pressure detection is carried out on the oil storage bin and the oil outlet main pipeline respectively, when the real-time detection exceeds a set upper limit value, pressure is released by controlling the electromagnetic valve, and two pressure detection layouts are combined, so that the integrity of a plunger assembly closed-loop oil film is ensured, and the plunger operates under low friction power consumption.
In the pressure detection and adjustment structure for the plunger sealing cavity of the reciprocating pump, the oil inlet pipeline is connected with the top of the plunger sealing cavity, and the oil outlet pipeline is connected with the bottom of the plunger sealing cavity.
In the pressure detection and adjustment structure for the plunger sealing cavity of the reciprocating pump, the number of cylinders of the reciprocating pump is a single cylinder, two cylinders, three cylinders, five cylinders or seven cylinders, the number of cylinders corresponds to the number of plunger sealing cavities equal to the number of cylinders, each plunger sealing cavity is connected with an oil inlet pipeline independently, and each oil inlet pipeline is provided with a switch valve.
In the pressure detection and regulation structure for the plunger sealing cavity of the reciprocating pump, the plunger sealing cavity is connected with the same oil outlet main pipeline through the oil outlet pipeline inside the pump body.
In the pressure detection and adjustment structure for the plunger sealing cavity of the reciprocating pump, an oil level detection transmitter is arranged at the top of the oil storage bin.
In the pressure detection and adjustment structure for the plunger sealing cavity of the reciprocating pump, a back pressure valve is arranged on the oil outlet main pipeline.
Drawings
FIG. 1 is a schematic view of the internal structure of a reciprocating pump in which the structure of the present invention is located;
fig. 2 is a schematic view of the external structure of the reciprocating pump in which the structure of the present invention is located.
Reference numerals: 1-a pump body, 2-a box body, 3-a plunger, 4-a plunger sealing cavity, 5-an oil storage bin, 6-an oil inlet pipeline, 7-an oil outlet pipeline, 8-an oil outlet main pipeline, 9-an electromagnetic valve, 10-a first pressure detection transmitter, 11-a second pressure detection transmitter, 12-an oil level detection transmitter, 13-a switch valve and 14-a back pressure valve.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.
Example (b): a reciprocating pump plunger seal cavity pressure detection and regulation structure is shown in figures 1 and 2, and comprises a pump body 1, a box body 2, a plunger 3, a plunger seal cavity 4 and an oil storage bin 5, wherein the oil storage bin 5 is connected with the plunger seal cavity 4 through an oil inlet pipeline 6, the plunger seal cavity 4 is connected with an oil outlet main pipeline 8 arranged outside the pump body 1 through an oil outlet pipeline 7 in the pump body 1, two end parts of the oil outlet main pipeline 8 are respectively provided with an electromagnetic valve 9 and a back pressure valve 14, and the oil outlet main pipeline 8 is an oil-water exchange pipe; the oil storage bin 5 is connected with a first pressure detection transmitter 10, the oil outlet main pipeline 8 is connected with a second pressure detection transmitter 11, and the electromagnetic valve 9, the first pressure detection transmitter 10 and the second pressure detection transmitter 11 are all connected with a control system of the reciprocating pump.
And (3) detecting the pressure of the oil storage bin 5: the first pressure detection transmitter 10 detects in real time, and when the pressure exceeds the set upper limit value, the electromagnetic valve 9 is opened to release the pressure to the set lower limit value.
And (3) detecting the pressure in the oil outlet main pipeline 8: the second pressure detection transmitter 11 detects in real time, and when the set upper limit value is exceeded, the electromagnetic valve 9 is opened to release the pressure to the set lower limit value.
The two pressure detection layouts are combined, the integrity of a closed-loop oil film of the plunger 3 assembly is ensured, and the plunger 3 runs under low friction power consumption.
Preferably, the back pressure valve 14 is opened to release the pressure when the pressure exceeds 0.2 MPa.
Preferably, the oil inlet pipeline 6 is connected with the top of the plunger sealing cavity 4, the oil outlet pipeline 7 is connected with the bottom of the plunger sealing cavity 4, oil inlet and oil outlet are achieved, the oil outlet main pipeline 8 is communicated with the plunger sealing cavity 4 through the oil outlet pipeline 7, and therefore the second pressure detection transmitter 11 can detect oil pressure in the plunger sealing cavity 4.
Preferably, the number of cylinders of the reciprocating pump can be a single cylinder, two cylinders, three cylinders, five cylinders or seven cylinders, the reciprocating pump comprises plunger sealing cavities 4 with the same number as the number of cylinders, each plunger sealing cavity 4 is independently connected with an oil inlet pipeline 6, each oil inlet pipeline 6 is provided with a switch valve 13, the state of each switch valve 13 is kept normally open, and the oil storage bin 5 can supplement oil for all the plunger sealing cavities 4 through the switch valves 13 independently arranged on each oil inlet pipeline 6.
Preferably, all the plunger seal chambers 4 are connected to the same main oil outlet pipeline 8 through the oil outlet pipeline 7 in the pump body 1.
Preferably, the top of the oil storage bin 5 is provided with an oil level detection transmitter 12 for detecting the oil level in the oil storage bin 5 in real time, and the early warning prompts are used for artificially filling the oil storage bin 5.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned examples, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (6)
1. The utility model provides a reciprocating pump plunger seal chamber pressure detection adjusts structure, reciprocating pump includes the pump body (1), the letter body (2), plunger (3), plunger seal chamber (4) and oil storage storehouse (5), its characterized in that: the oil storage bin (5) is connected with a plunger sealing cavity (4) through an oil inlet pipeline (6), the plunger sealing cavity (4) is connected with an oil outlet main pipeline (8) arranged outside the pump body (1) through an oil outlet pipeline (7) inside the pump body (1), and the oil outlet main pipeline (8) is provided with an electromagnetic valve (9); the oil storage bin (5) is connected with a first pressure detection transmitter (10), and the oil outlet main pipeline (8) is connected with a second pressure detection transmitter (11).
2. The pressure detection and adjustment structure for the sealing cavity of the reciprocating pump plunger as claimed in claim 1, wherein: the oil inlet pipeline (6) is connected with the top of the plunger sealing cavity (4), and the oil outlet pipeline (7) is connected with the bottom of the plunger sealing cavity (4).
3. The pressure detection and adjustment structure for the plunger seal cavity of the reciprocating pump according to claim 1 or 2, characterized in that: the number of cylinders of the reciprocating pump is single cylinder, double cylinder, three cylinder, five cylinder or seven cylinder, the number of cylinders corresponds to the number of plunger sealing cavities (4) equal to the number of cylinders, each plunger sealing cavity (4) is connected with an oil inlet pipeline (6) independently, and each oil inlet pipeline (6) is provided with a switch valve (13).
4. The pressure detection and adjustment structure for the sealing cavity of the reciprocating pump plunger as claimed in claim 3, wherein: the plunger sealing cavity (4) is connected with the same oil outlet main pipeline (8) through an oil outlet pipeline (7) in the pump body (1).
5. The pressure detection and adjustment structure for the sealing cavity of the reciprocating pump plunger as claimed in claim 1, wherein: and an oil level detection transmitter (12) is arranged at the top of the oil storage bin (5).
6. The pressure detection and adjustment structure for the sealing cavity of the reciprocating pump plunger as claimed in claim 1, wherein: and a back pressure valve (14) is arranged on the oil outlet main pipeline (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121865802.0U CN215370200U (en) | 2021-08-10 | 2021-08-10 | Pressure detection and regulation structure for plunger sealing cavity of reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121865802.0U CN215370200U (en) | 2021-08-10 | 2021-08-10 | Pressure detection and regulation structure for plunger sealing cavity of reciprocating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215370200U true CN215370200U (en) | 2021-12-31 |
Family
ID=79617731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121865802.0U Active CN215370200U (en) | 2021-08-10 | 2021-08-10 | Pressure detection and regulation structure for plunger sealing cavity of reciprocating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215370200U (en) |
-
2021
- 2021-08-10 CN CN202121865802.0U patent/CN215370200U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104863909B (en) | With the spring pressurizing closed hydraulic oil container of volume, pressure and leakage detection function | |
| CN104196784B (en) | A kind of cabin section integration electrohydraudic servomechanism | |
| CN112594233A (en) | Pressure boost oil feeding system | |
| CN215370200U (en) | Pressure detection and regulation structure for plunger sealing cavity of reciprocating pump | |
| CN110131073B (en) | Space propulsion system suitable for filling of large-capacity storage tank | |
| CN105697434A (en) | High-efficiency energy-accumulation pressure booster | |
| CN208474211U (en) | A kind of Full-hydraulic braking apparatus filling liquid valve group and its control system | |
| CN204875943U (en) | High canned type overhead tank | |
| CN102797695A (en) | Cyclic protection control system and cyclic protection control method for mechanical seal | |
| CN209246798U (en) | A kind of cannon recuperator means liquid gas inspection and adjustment device | |
| CN203051312U (en) | Underwater oil pressure source having closed-loop control function | |
| CN111412127A (en) | Nuclear-grade reciprocating hydraulic diaphragm pump | |
| CN112097288B (en) | Fuel system suitable for closed cycle steam turbine | |
| KR20160114483A (en) | Air boosting pump | |
| CN205714998U (en) | A kind of accumulation of energy cylinder of high efficiency energy storage supercharger | |
| CN213744201U (en) | Intelligent gas-liquid energy-saving cylinder and power system thereof | |
| CN215099348U (en) | Nitrogen sealing device capable of respectively adjusting positive pressure and negative pressure | |
| CN215486970U (en) | Multistage sealing structure of cylinder | |
| CN218177584U (en) | Pressure control loop structure of hydraulic system | |
| CN213062295U (en) | Flexible cut-off device | |
| CN219220691U (en) | Small-flow anti-sedimentation hydraulic diaphragm pump and system for sewage treatment | |
| CN218030468U (en) | Dense-phase carbon dioxide booster pump | |
| CN221222383U (en) | Fluid infusion device of hydraulic system | |
| CN217558661U (en) | Oil cylinder speed and pressure closed-loop control oil circuit system | |
| CN203822755U (en) | Hydraulic lifting device for quick-change vehicle for containers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |