CN217421492U - Plunger pump variable mechanism integrating three variable forms - Google Patents
Plunger pump variable mechanism integrating three variable forms Download PDFInfo
- Publication number
- CN217421492U CN217421492U CN202123107650.0U CN202123107650U CN217421492U CN 217421492 U CN217421492 U CN 217421492U CN 202123107650 U CN202123107650 U CN 202123107650U CN 217421492 U CN217421492 U CN 217421492U
- Authority
- CN
- China
- Prior art keywords
- pressure
- constant power
- control block
- load
- variable
- 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
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a three kinds of variable forms are plunger pump variable mechanism as an organic whole, including the sensitive control block of constant power control piece, load flow, take remote function's pressure control piece, the constant power control piece is installed on the pump body, the sensitive control block of load flow, pressure control piece are all installed on the constant power control piece, and the choke valve is connected to the constant power control piece, and the remote pressure regulating valve is connected to the pressure control piece of taking remote function for realize the sensitive regulation of load flow, remote pressure regulation, constant power control simultaneously. The utility model discloses a three kinds of variable forms close plunger pump variable mechanism as an organic whole, can realize the sensitive regulation of load flow, long-range pressure regulation, constant power control simultaneously, reach that pump energy consumption loss is extremely low, adjust very convenient, flow, pressure application scope wider.
Description
Technical Field
The utility model relates to a plunger pump variable form, especially a plunger pump variable mechanism that three kinds of variable control forms of load flow sensitive control, remote pressure control, constant power control closed as an organic whole.
Background
The three traditional plunger pump variable forms are separated, namely each pump can only select one variable form, so that the application defects exist more or less, particularly, an oil source hydraulic station with strong universality and wider application range is not completely applicable, and one variable form is selected and other functions are lost, namely the variable form is lost. Namely, a pump with a load flow sensitive variable form is selected, so that the pressure is inconvenient to adjust, and the flow/pressure universality range is not wide; if a remote pressure variable pump is selected, the oil source output by the oil pump is reduced to load pressure after reaching the set pressure of the pump, and the energy consumption is very high and the flow/pressure universality range is not wide when pressure loss is generated; if a constant power variable pump is selected, the oil source output by the oil pump is reduced to load pressure after reaching the set pressure of the pump, and the energy consumption is very high and the pressure adjustment is inconvenient if pressure loss is generated.
Disclosure of Invention
In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a three kinds of variable forms are as an organic whole plunger pump variable mechanism is provided to realize the sensitive regulation of load flow, long-range pressure control, constant power control simultaneously, it is extremely low to reach the pump energy consumption loss, adjust very convenient, flow, pressure application scope wider.
In order to achieve the above purpose, the technical scheme of the utility model is that: a plunger pump variable mechanism integrating three variable forms comprises a constant power control block, a load flow sensing control block and a pressure control block with a remote function, and is characterized in that: the constant power control block is installed on the pump body, the load flow sensitive control block and the pressure control block with the remote function are installed on the constant power control block, the constant power control block is connected with the throttle valve, and the pressure control block with the remote function is connected with the remote pressure regulating valve and used for achieving load flow sensitive regulation, remote pressure regulation and constant power control at the same time.
Further, the throttle valve is a throttle valve which is configured by a user and used for adjusting the flow.
Furthermore, the remote pressure regulating valve is an overflow valve which is required to be configured by a user for remote pressure regulation.
Further, when the load power does not reach the pump constant power set value of the constant power control block and the load pressure does not reach the remote pressure regulating valve set value configured by the user, the pressure difference value formed between the pressure P1 at the input end and the pressure P at the output end of the throttle valve is set to be 1.5 to 2MPa through the load flow sensitive control block 4, and the flow required by the load is output in a variable mode through the throttle valve which is configured by the user and used for regulating the flow.
Further, when the load power does not reach the pump constant power set value of the constant power control block and the load pressure reaches the remote pressure regulating valve set value configured by a user, the plunger variable pump outputs the flow required by the load through the automatic variable of the pressure control block.
Further, when the load power reaches the pump constant power set value of the constant power control block and the load pressure does not reach the remote pressure regulating valve set value configured by the user, the plunger variable pump outputs the flow corresponding to the constant power set value through the automatic variable of the constant power control block.
Further, when the load power reaches the pump constant power set value of the constant power control block and the load pressure reaches the remote pressure regulating valve set value configured by the user, the plunger variable pump outputs the load pressure and the flow corresponding to the constant power set value through the constant power control block and the pressure control block.
The beneficial effects of the utility model are that:
the utility model discloses a three kinds of variable forms close novel plunger pump variable mechanism as an organic whole, can realize the sensitive regulation of load flow, long-range pressure regulation, constant power control simultaneously, reach that pump energy consumption loss is extremely low, adjust very convenient, flow, pressure application scope are wider.
The novel plunger pump variable form integrating the three variable forms is adopted in a pressure-resistant test station, a general oil source station and a valve group test hydraulic station, the traditional three plunger pump variable separation forms are replaced, and a good application effect is achieved.
Drawings
FIG. 1 is a hydraulic schematic diagram of a variable mechanism of a plunger pump integrated with three variable forms;
fig. 2 is a flow/pressure curve diagram of a plunger pump variable mechanism integrated by three variable forms of the invention;
fig. 3 is an outline view of a variable mechanism of an A4VSO40 plunger pump integrated with three variable forms of the invention;
fig. 4 is a flow/pressure curve diagram of the constant power setting value of the plunger variable displacement pump of the present invention is 11 KW.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1 and 3, the plunger pump variable mechanism integrated in three variable forms of the present invention includes a pump body 1, a constant power control block 2 integrated on the pump body 1, a throttle valve 3 configured by the user for adjusting the flow, a load flow sensitive control block 4 integrated on the constant power control block 2, a remote pressure regulating valve 5 configured by the user, and a pressure control block 6 integrated on the constant power control block 2.
The constant power control block 2 is arranged on the pump body 1, and the load flow sensitive control block 4 and the pressure control block 6 are both arranged on the constant power control block 2. The flow sensitive and pressure control variable of the load and the automatic variable under the condition of constant power are realized through the throttle valve 3 which is configured by the user and used for adjusting the flow and the remote pressure adjusting valve 5 which is configured by the user.
The utility model discloses a three kinds of variable forms close plunger pump variable mechanism as an organic whole realizes sensitive regulation of load flow, long-range pressure regulation, constant power control simultaneously, reaches that pump energy consumption loss is extremely low, adjust very convenient, flow, pressure application scope wider.
The flow/pressure curve of this pump, as shown in fig. 2, includes a load flow sensing curve, a pressure control curve, and a constant power curve.
In order to realize the load flow sensitivity of the pump, a throttle valve 3 which is required to be configured by a user is adopted; the user needs to configure the remote pressure regulating valve 5 by himself, so that remote pressure regulation is conveniently achieved.
Point P2 is the pressure corresponding to the constant power set point at full flow, point P3 is the system pressure value using the pump hydraulic system.
When the load power does not reach the set value of the pump constant power of the constant power control block 2 and the load pressure does not reach the set value of the remote pressure regulating valve 5 which is required to be configured by a user, a pressure difference is formed between P1 and P, the pressure difference value is set through the load flow sensitive control block 4 and is generally 1.5 to 2MPa, the flow required by the load is output through the throttle valve 3 which is used for regulating the flow and is configured by the user, and the pump variable is output.
When the load power does not reach the set value of the pump constant power of the constant power control block 2 and the load pressure reaches the set value of the remote pressure regulating valve 5 which is required to be configured by a user, the pump automatically and variably outputs the flow required by the load under the action of the pressure control block 6.
When the load power reaches the set value of the pump constant power of the constant power control block 2 and the load pressure does not reach the set value of the remote pressure regulating valve 5 which needs to be configured by a user, the pump automatically and variably outputs the load pressure and the flow corresponding to the set value of the constant power under the action of the constant power control block 2.
FIG. 4 is a graph of the flow/pressure curve for an A4VSO40 variable displacement plunger pump with a constant power set point of 11KW, a speed of 1450r/min, a maximum output flow of 58L/min,
when the load pressure does not reach 11MPa (which can be obtained by formula calculation), the load flow is output in a variable manner of 0-58L/min by adjusting the throttle valve 3 which is configured by a user and used for adjusting the flow; when the load pressure is less than 11MPa and reaches the set value of the remote pressure regulating valve 5 which is required to be configured by a user, the load flow is automatically output in a variable manner, and the flow required by the load and the system leakage are met.
When the load pressure is 11-35MPa, the maximum output flow of the pump can be obtained according to the coordinates of the attached drawing 4 (can be obtained by calculation through a formula), at the moment, the throttle valve 3 which is configured by a user and used for adjusting the flow can be adjusted, the pump automatically and variably outputs the load flow, and the pump reduces the flow output, so that the corresponding maximum load pressure can be improved, the working conditions of large flow/small pressure and large pressure/small flow are realized, and the flow/pressure application range is wide. Similarly, when the load pressure reaches the set value of the remote pressure regulating valve 5 which is required to be configured by the user, the load flow is automatically output in a variable manner, so that the flow required by the load and the system leakage are met.
Claims (7)
1. A plunger pump variable mechanism integrating three variable forms comprises a constant power control block, a load flow sensing control block and a pressure control block with a remote function, and is characterized in that: the constant power control block is installed on the pump body, the load flow sensitive control block and the pressure control block with the remote function are installed on the constant power control block, the constant power control block is connected with the throttle valve, and the pressure control block with the remote function is connected with the remote pressure regulating valve and used for achieving load flow sensitive regulation, remote pressure regulation and constant power control at the same time.
2. The integrated three variable form plunger pump variable mechanism of claim 1, wherein: the throttle valve is a throttle valve which is required to be configured by a user to adjust the flow.
3. The integrated plunger pump variable mechanism of claim 1, wherein: the remote pressure regulating valve is an overflow valve which is required to be configured by a user for remote pressure regulation.
4. The integrated three variable form plunger pump variable mechanism of claim 1, wherein: when the load power does not reach the set value of the pump constant power of the constant power control block and the load pressure does not reach the set value of a remote pressure regulating valve configured by a user, the pressure difference value formed between the pressure P1 at the input end of the throttle valve and the pressure P at the output end of the throttle valve is set to be 1.5 to 2MPa through the load flow sensitive control block, and the flow required by the load is output in a variable mode through the throttle valve which is configured by the user and used for regulating the flow.
5. The integrated three variable form plunger pump variable mechanism of claim 1, wherein: when the load power does not reach the set value of the pump constant power of the constant power control block and the load pressure reaches the set value of the remote pressure regulating valve configured by a user, the plunger pump outputs the flow required by the load through the automatic variable of the pressure control block.
6. The integrated plunger pump variable mechanism of claim 1, wherein: when the load power reaches a pump constant power set value of the constant power control block and the load pressure does not reach a remote pressure regulating valve set value configured by a user, the plunger pump outputs flow corresponding to the constant power set value through the automatic variable of the constant power control block.
7. The integrated three variable form plunger pump variable mechanism of claim 1, wherein: when the load power reaches a pump constant power set value of the constant power control block and the load pressure reaches a remote pressure regulating valve set value configured by a user, the plunger pump outputs the flow corresponding to the load pressure and the constant power set value through automatic variables of the constant power control block and the pressure control block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123107650.0U CN217421492U (en) | 2021-12-10 | 2021-12-10 | Plunger pump variable mechanism integrating three variable forms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123107650.0U CN217421492U (en) | 2021-12-10 | 2021-12-10 | Plunger pump variable mechanism integrating three variable forms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217421492U true CN217421492U (en) | 2022-09-13 |
Family
ID=83170260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123107650.0U Active CN217421492U (en) | 2021-12-10 | 2021-12-10 | Plunger pump variable mechanism integrating three variable forms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217421492U (en) |
-
2021
- 2021-12-10 CN CN202123107650.0U patent/CN217421492U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201202622Y (en) | Proportional variable plunger pump | |
| CN101818508A (en) | Power control system and method of excavator | |
| CN202628454U (en) | Air amount regulation system of reciprocating compressor | |
| CN102021925A (en) | Control system and method for matching excavator power | |
| CN106895039A (en) | Electric proportional control valve and hydraulic system of loading machine working device | |
| CN205401290U (en) | Energy storage ware return circuit is with guide's off -load overflow valve | |
| CN204284032U (en) | Single actuator automatic switchover rapid movement oil hydraulic circuit | |
| CN217421492U (en) | Plunger pump variable mechanism integrating three variable forms | |
| CN103672147A (en) | Fluid pressure-stabilizing regulating valve | |
| CN105604996A (en) | Load-sensitive control system, control method and hydraulic system | |
| CN202545918U (en) | Small-pressure-difference low-pressure switching pressure regulation device | |
| CN204004746U (en) | Dynamic differential pressure balance integral valve | |
| CN203614900U (en) | Fluid pressure stabilization regulating valve | |
| CN114060263A (en) | Plunger pump variable mechanism integrating three variable forms | |
| CN209325117U (en) | A kind of lever gas pressure regulator, governor | |
| CN203430757U (en) | Constant pressure digital variable pump | |
| CN215949663U (en) | Fuel pressure dynamic adjusting device for engine development and performance test | |
| CN205315793U (en) | Gaseous relief pressure valve of forward lever | |
| CN207315751U (en) | The hydraulic lifting system of tractor | |
| CN201407388Y (en) | Constant-lift guide valve of hydraulic control valve | |
| CN207989867U (en) | A kind of balance type structure pressure regulator | |
| CN105156377B (en) | A kind of output flow control device of hydraulic pump | |
| CN209041686U (en) | A kind of piston type branch pipe pressure-reducing valve | |
| CN112764437A (en) | Automatic control method for air flow regulation of test bed based on pneumatic regulating valve | |
| DE50208840D1 (en) | FORKLIFT WITH CONTROL DEVICE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |