CN211368872U - Constant-pressure variable-flow remote water supply device - Google Patents
Constant-pressure variable-flow remote water supply device Download PDFInfo
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- CN211368872U CN211368872U CN201922257253.8U CN201922257253U CN211368872U CN 211368872 U CN211368872 U CN 211368872U CN 201922257253 U CN201922257253 U CN 201922257253U CN 211368872 U CN211368872 U CN 211368872U
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Abstract
The utility model discloses a constant-pressure variable-flow remote water supply device, which comprises an assembly seat, a water supply device and a driving device; the water supply device and the driving device are arranged on the assembling seat; the water supply device comprises a volume pump, a bypass valve and a bypass pipe, wherein the volume pump is provided with a water inlet and a water outlet, the bypass pipe is communicated with the water inlet and the water outlet, the bypass valve is arranged on the bypass pipe, and the bypass valve is used for keeping the water discharge pressure of the water outlet constant; the driving device comprises a hydraulic motor, an engine and a controller, the hydraulic motor is connected with the displacement pump and used for driving the displacement pump, and the controller is connected with the hydraulic motor. The assembly seat can be used for subsequently integrally assembling the water supply device on a single vehicle or an independent walking device, so that the water supply device can be conveniently and integrally and independently placed on the vehicle to be transported/used or assembled on a small-sized mobile platform to be used, and can pass through areas which are difficult to pass by large-sized vehicles such as trucks and the like, and can be selectively assembled on various platforms, thereby improving the use flexibility of the whole equipment.
Description
Technical Field
The utility model relates to a long-range water supply field, in particular to long-range water supply installation of constant voltage variable flow.
Background
When used for fighting forest fires, the water fire fighting agent has the characteristics of high efficiency, economy, simplicity, convenience, no environmental pollution and the like, and is an internationally recognized forest fire fighting technical development trend. The existing water supply mode mainly adopts manual water carrying, but the labor intensity is high and the manpower consumption is high due to low water source terrain, rugged mountain road and dense forest. Aiming at the condition that the artificial water supply is insufficient for supplying water to the large forest fire, the mechanical equipment adopting the traditional centrifugal water pump for remote water supply is provided, and the following technical problems are solved:
the forest water source is complex, the lake water level is low in autumn and winter when forest fire easily occurs, and the centrifugal water pump is poor in self-absorption capacity, so that water cannot be effectively supplied when the water level is low and the self-absorption distance is long;
the mountain stream discharge of forest changes greatly, and the condition that discharge is less than water pump flow often appears, because the delivery pressure of centrifugal pump is directly proportional with the square of rotational speed, and the flow is directly proportional with the square of rotational speed, when the mode with reduction water pump rotational speed reduces the flow, the water pump lift reduces by a wide margin, has the condition that can't continuous high lift water supply.
Mechanical equipment for remote water supply is often fixedly connected with a vehicle, so that the overall size is large, and higher requirements are provided for transportation conditions.
SUMMERY OF THE UTILITY MODEL
Therefore, a constant-pressure variable-flow remote water supply device is needed to be provided, and the problems that in the prior art, water supply with high lift is low in water source flow and inconvenient in transportation of water supply equipment under the condition of long self-suction distance are solved.
In order to achieve the above object, the inventor provides a constant-pressure variable-flow remote water supply device, which comprises an assembly seat, a water supply device and a driving device;
the water supply device and the driving device are arranged on the assembling seat;
the water supply device comprises a volumetric pump, a bypass valve and a bypass pipe, wherein the volumetric pump is provided with a water inlet and a water outlet, the bypass pipe is communicated with the water inlet and the water outlet, the bypass valve is arranged on the bypass pipe, and the bypass valve is used for keeping the water discharge pressure of the water outlet constant;
the driving device comprises a hydraulic motor, an engine and a controller, the hydraulic motor is connected with the displacement pump and used for driving the displacement pump, the controller is connected with the hydraulic motor and used for controlling the rotating speed of the hydraulic motor, and the engine is used for driving the hydraulic motor to rotate.
As the utility model discloses a preferred structure, the bypass valve is the spring surge damping valve.
As a preferred structure of the utility model, be equipped with pressure regulating device on the spring surge damping valve, pressure regulating device is used for adjusting the drainage pressure in outlet.
As an optimized structure of the utility model, the assembly seat is a fixed chassis or an assembly frame.
As an optimized structure of the present invention, the displacement pump is a rotor pump.
As the utility model discloses a preferred structure still includes first pressure sensor, first pressure sensor sets up on the outlet of positive displacement pump, first pressure sensor is connected with the controller for detect outlet drainage pressure, and give the controller with the pressure feedback information that detects, the controller is according to the rotational speed of pressure feedback information regulation hydraulic motor.
As the utility model discloses a preferred structure still includes second pressure sensor, second pressure sensor sets up on the water inlet of displacement pump, second pressure sensor is connected with the controller for detect outlet drainage pressure, and give the controller with the pressure feedback information that detects, the controller is according to the rotational speed of pressure feedback information regulation hydraulic motor.
As a preferred structure of the present invention, the controller is plc.
As the utility model discloses a preferred structure still includes the shell, the shell assembles on the mount pad.
As an optimized structure of the utility model, the engine is a diesel engine.
Different from the prior art, the technical scheme comprises an assembly seat, a water supply device and a driving device; the water supply device and the driving device are arranged on the assembling seat; the water supply device comprises a volume pump, a bypass valve and a bypass pipe, wherein the volume pump is provided with a water inlet and a water outlet, the bypass pipe is communicated with the water inlet and the water outlet, the bypass valve is arranged on the bypass pipe, and the bypass valve is used for keeping the water discharge pressure of the water outlet constant; the driving device comprises a hydraulic motor, an engine and a controller, the hydraulic motor is connected with the displacement pump and used for driving the displacement pump, and the controller is connected with the hydraulic motor. The assembly seat can be used for subsequently integrally assembling the water supply device on a single vehicle or an independent walking device, so that the water supply device can be conveniently and integrally and independently placed on the vehicle to be transported/used or assembled on a small-sized mobile platform to be used (a pickup truck or an independently-operated crawler-type walking device), passes through areas which are difficult to pass by large-sized vehicles such as a truck and the like, is selectively assembled on various platforms, and the use flexibility of the whole equipment is improved.
Drawings
Fig. 1 is a schematic front structural view of a constant-pressure variable-flow remote water supply apparatus according to an embodiment;
FIG. 2 is a plan view of the constant pressure and variable flow remote water supply apparatus according to the embodiment;
FIG. 3 is a schematic diagram illustrating an operation of the constant pressure and variable flow remote water supply apparatus according to an embodiment;
FIG. 4 is a schematic sectional view taken along line A-A in FIG. 1;
fig. 5 is a partially enlarged schematic view of a bypass valve of the constant pressure variable flow remote water supply apparatus according to the embodiment.
Description of reference numerals:
1. assembling a seat;
2. a water supply device;
21. a water inlet;
22. a water outlet;
23. a bypass valve;
231. a main valve element; 232. a main valve spring; 233. an auxiliary valve core; 234. a secondary spring;
235. a pressure regulator; 236. a first chamber; 237. a first hole; 238. a second chamber;
239. a second hole; 2410. a third hole; 2311. a third chamber;
2312. a fourth chamber; 2313. a main valve central bore;
24. a positive displacement pump;
3. a drive device;
31. a hydraulic motor;
32. an engine;
33. a hydraulic pump;
4. a sensor;
41. a first pressure sensor;
42. a second pressure sensor.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1 to 5, the present embodiment provides a constant-pressure variable-flow remote water supply device, which includes an assembly base 1, a water supply device 2, and a driving device 3;
as shown in fig. 1 and 2, the water supply device 2 and the driving device 3 are mounted on a mounting base 1, specifically, a fixed chassis or a mounting bracket. The water supply device can be integrally assembled on a single vehicle or an independent walking device subsequently, so that the water supply device can be conveniently and integrally and independently placed on the vehicle for transportation/use or assembled on a small-sized mobile platform for using a pickup truck or an independently-operated crawler-type walking device, passes through areas which are difficult to pass by large-sized vehicles such as trucks and the like, is selectively assembled on various platforms, and the use flexibility of the whole equipment is improved.
The water supply device 2 comprises a volumetric pump 24, a bypass valve 23 and a bypass pipe, wherein the volumetric pump 24 is a rotor pump; the bypass valve 23 is a spring-type pressure maintaining valve. The volume rotor pump is provided with a water inlet 21 and a water outlet 22, the by-pass pipe is connected with the water inlet 21 and the water outlet 22 through pipelines, and the bypass valve 23 is installed on the by-pass pipe. The bypass valve 23 serves to keep the discharge pressure of the discharge port 22 constant. In this embodiment, the engine 32 is a diesel engine, and in other embodiments, the engine 32 may also be another engine device such as a gasoline engine.
Further, the water-saving water dispenser further comprises a water inlet pipe and a water outlet pipe, wherein the water inlet pipe is connected to the water inlet 21, and the water outlet pipe is connected to the water outlet 22. Furthermore, the water storage rack also comprises a storage rack which is fixedly connected to the base plate 1 and used for placing a water inlet pipe and a water outlet pipe. Parts, tools and the like can be conveniently assembled on the pump truck when the pump truck moves, and the situation that materials required by the water supply pump truck are extracted and run back and forth is avoided.
Further, a pressure regulator 235 is arranged on the spring-type pressure stabilizing valve, and the pressure regulator 235 is used for regulating the drainage pressure of the drainage port 22.
The driving device 3 comprises a hydraulic motor 31, a power source and a controller, wherein the hydraulic motor 31 is in transmission connection with the displacement pump 24 and is used for driving the displacement pump 24, the controller is connected with the hydraulic motor 31 and is used for controlling the rotating speed of the hydraulic motor 31, and the power source provides power for the hydraulic motor 31. Specifically, the controller is plc; the power sources include an engine 32 and a hydraulic pump 33.
As shown in fig. 3 and 4, the hydraulic pump further comprises a first pressure sensor 51, the first pressure sensor 51 is disposed on the drain port 22 of the displacement pump 24, and the first pressure sensor 51 is connected to the controller for detecting the drain pressure of the drain port 22 and feeding back the detected pressure to the controller, and the controller adjusts the rotation speed of the hydraulic motor 31 according to the pressure feedback information.
Specifically, the water outlet 22 is provided with a first pressure sensor 51, the hydraulic motor 31 is a variable displacement motor, and when the first pressure sensor 51 senses that the pressure is too high, the PLC controller controls the hydraulic motor 31 to reduce the rotation speed, so that the rotation speed of the rotor pump connected with the hydraulic motor is reduced, and the output flow is reduced.
Further, a second pressure sensor 52 is included, the second pressure sensor 52 is disposed on the water inlet 21 of the volumetric pump 24, and the second pressure sensor 52 is connected to the controller for detecting the water discharge pressure of the water discharge port 22 and feeding back the detected pressure to the controller, and the controller adjusts the rotation speed of the hydraulic motor 31 according to the pressure feedback information.
Specifically, the water inlet 21 is provided with a second pressure sensor 52, the hydraulic motor 31 is a variable displacement motor, and when the second pressure sensor 52 senses that the water level is too low, the PLC controller controls the hydraulic pump 33 to increase the rotating speed, so that the rotating speed of the rotor pump 2 connected with the PLC controller is increased, and the output flow is increased.
As shown in fig. 5, in use, the positive displacement rotary pump is fixed to the chassis 1, the positive displacement rotary pump is driven by a hydraulic motor driven by high-pressure oil supplied from a hydraulic pump 33 driven by an engine 32, and a bypass valve 23 is provided between the water inlet 21 and the water outlet 22 connected to the positive displacement rotary pump, and the bypass valve 23 is used to keep the discharge pressure of the water outlet 22 constant. In this embodiment, the engine 32 is a diesel engine, and in other embodiments, the engine 32 may also be another engine device such as a gasoline engine.
When the rotor pump is operated, the pressure of the drain port 22 is gradually increased, pressurized water enters the first chamber 236 from the drain port 22 through the main valve central hole 2313 and enters the second chamber 238 through the first hole 237, when the force of the pressure of the second chamber 238 acting on the secondary valve core 233 is smaller than the pressure of the secondary spring 234, the secondary valve core 233 is in a closed state, at this time, the pressure in the first chamber 236 is equal to the pressure of the drain port 22, and the main valve core 231 is also in a closed state under the action of the main valve spring 232; when the force of the pressure of the second chamber 238 acting on the secondary spool 233 is greater than the pressure of the secondary spring 234, the secondary spool 233 opens, the pressure water enters the third chamber 2311 through the second hole 239 and flows from the third hole 2410 to the fourth chamber 2312 communicated with the water inlet 21, because the pressure of the fourth chamber 2312 is negative, the pressure in the first chamber 236 sharply decreases, a pressure difference is generated between the first chamber 236 and the water outlet 22, the main spool 231 generates leftward pressure under the action of the pressure difference to compress the gate valve spring, the main spool 231 moves leftward to be in an open state, and part of the pressure water enters the water inlet 21 from the water outlet 22 to reduce the water outlet pressure, so that the bypass function is realized. In use, the pressure regulator 235 is adjusted to further control the pressure in the second chamber 238 by varying the size and pressure of the third chamber during adjustment, thereby adjusting the pressure at the discharge port 22.
Further, the device also comprises a shell, and the shell is assembled on the assembly seat 1. The protection of the equipment is facilitated, and the service life of the equipment is prolonged.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (10)
1. A constant-pressure variable-flow remote water supply device is characterized by comprising an assembly seat, a water supply device and a driving device;
the water supply device and the driving device are arranged on the assembling seat;
the water supply device comprises a volumetric pump, a bypass valve and a bypass pipe, wherein the volumetric pump is provided with a water inlet and a water outlet, the bypass pipe is communicated with the water inlet and the water outlet, the bypass valve is arranged on the bypass pipe, and the bypass valve is used for keeping the water discharge pressure of the water outlet constant;
the driving device comprises a hydraulic motor, an engine and a controller, the hydraulic motor is connected with the displacement pump and used for driving the displacement pump, the controller is connected with the hydraulic motor and used for controlling the rotating speed of the hydraulic motor, and the engine is used for driving the hydraulic motor to rotate.
2. The constant pressure variable flow remote water supply device according to claim 1, wherein the bypass valve is a spring-loaded pressure maintaining valve.
3. The constant-pressure variable-flow remote water supply device as claimed in claim 2, wherein the spring-type pressure-stabilizing valve is provided with a pressure regulating device for regulating the water discharge pressure of the water discharge port.
4. The constant-pressure variable-flow remote water supply device as claimed in claim 1, wherein the mounting seat is a fixed chassis or a mounting bracket.
5. The constant-pressure variable-flow remote water supply device as claimed in claim 1, wherein the displacement pump is a rotor pump.
6. The constant-pressure variable-flow remote water supply device according to claim 1, further comprising a first pressure sensor disposed at the drain port of the displacement pump, the first pressure sensor being connected to the controller for detecting the drain port drain pressure and feeding back the detected pressure to the controller, the controller adjusting the rotation speed of the hydraulic motor according to the pressure feedback information.
7. The constant-pressure variable-flow remote water supply device according to claim 6, further comprising a second pressure sensor provided at the water inlet of the displacement pump, the second pressure sensor being connected to the controller for detecting the discharge pressure of the discharge port and feeding back the detected pressure to the controller, the controller adjusting the rotation speed of the hydraulic motor according to the pressure feedback information.
8. The constant-pressure variable-flow remote water supply device as claimed in claim 1, wherein the controller is plc.
9. The constant-pressure variable-flow remote water supply device as claimed in claim 1, further comprising a housing fitted to the fitting seat.
10. The constant-pressure variable-flow remote water supply device as claimed in claim 1, wherein the engine is a diesel engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922257253.8U CN211368872U (en) | 2019-12-16 | 2019-12-16 | Constant-pressure variable-flow remote water supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922257253.8U CN211368872U (en) | 2019-12-16 | 2019-12-16 | Constant-pressure variable-flow remote water supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211368872U true CN211368872U (en) | 2020-08-28 |
Family
ID=72165219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922257253.8U Active CN211368872U (en) | 2019-12-16 | 2019-12-16 | Constant-pressure variable-flow remote water supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211368872U (en) |
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2019
- 2019-12-16 CN CN201922257253.8U patent/CN211368872U/en active Active
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