CN216895170U - Fuel oil explosion-proof high-pressure control device - Google Patents
Fuel oil explosion-proof high-pressure control device Download PDFInfo
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- CN216895170U CN216895170U CN202123376606.XU CN202123376606U CN216895170U CN 216895170 U CN216895170 U CN 216895170U CN 202123376606 U CN202123376606 U CN 202123376606U CN 216895170 U CN216895170 U CN 216895170U
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Abstract
The utility model relates to the technical field of fluid control, in particular to a fuel oil explosion-proof high-pressure control device, which comprises a device body, wherein the device body is connected with a pipeline pressure system through an oil inlet and an oil return port and comprises a main valve body, a first pressure valve, a second pressure valve and a first overflow valve; an oil return port of the first overflow valve is connected with a system oil return tank; an oil inlet of the second pressure valve is connected with an oil inlet of the first overflow valve, and an oil return port of the second pressure valve is connected with a system oil return tank; a valve core is arranged in a working oil cavity of the main valve body, and the main valve body is connected with a pressure limiter; the first pressure valve and the second pressure valve adopt explosion-proof proportional pressure valves. The utility model can effectively control the pressure proportion setting of the system even if the working condition of the fuel medium is adopted, and simultaneously realize the setting exceeding the standard maximum pressure set value.
Description
Technical Field
The utility model relates to the technical field of fluid control, in particular to an explosion-proof high-pressure fuel control device.
Background
The explosion-proof valve is commonly used in the application of fluid pipeline transportation, and the pressure of the pipeline is released through the valve core, so that the pressure under the condition of the internal pressure of the pipeline exceeding the limit is quickly released and controlled, and the pipeline breakage and the safety accidents caused by the pipeline breakage are avoided. The standard explosion-proof direct-acting/pilot-operated proportional overflow valve belongs to one of common explosion-proof valves, the maximum pressure and the maximum flow for controlling the working condition of the proportional overflow valve are both small, and the proportional overflow valve is generally used in the application occasions of the maximum pressure of 250bar and the maximum flow of 4L/min. In a standard explosion-proof pilot-operated proportional overflow valve in the prior art, a valve core assembly is arranged in a main valve body and used for controlling oil inlet and oil return, oil way interfaces such as an oil inlet, an oil return opening and a control oil opening are arranged on the main valve body, and the main valve body is connected with an explosion-proof pilot valve as a pilot stage of the explosion-proof pilot-operated proportional overflow valve. Although the flow control of the explosion-proof valve can be kept within the nominal flow range of the specification, and the error is small, when the working condition of the fuel medium is adopted, the problem of unstable pressure of a control system is easily caused under the conditions of low viscosity and poor lubricity of the oil liquid.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fuel oil explosion-proof high-pressure control device, which solves the technical problems.
The technical problem solved by the utility model can be realized by adopting the following technical scheme:
an explosion-proof high-pressure control device for fuel oil comprises a device body, wherein the device body is provided with an oil inlet and an oil return port, a pipeline pressure system is connected through the oil inlet and the oil return port, the pipeline pressure system comprises a pump and a motor, the motor is connected with the pump, the device body comprises a main valve body, a first pressure valve, a second pressure valve and a first overflow valve,
an oil inlet of the main valve body is connected with an oil inlet of the first pressure valve, an oil return port of the main valve body is connected with an oil return box of the pipeline pressure system, and a control oil port of the main valve body is connected with an oil inlet of the first pressure valve;
an oil return port of the first pressure valve is connected with an oil inlet of the first overflow valve;
an oil return port of the first overflow valve is connected with an oil return tank of the pipeline pressure system;
an oil inlet of the second pressure valve is connected with an oil inlet of the first overflow valve, and an oil return port of the second pressure valve is connected with an oil return tank of the pipeline pressure system;
a valve core is arranged in a working oil cavity of the main valve body, and the main valve body is connected with a pressure limiter through a control oil way;
the first pressure valve and the second pressure valve are explosion-proof proportional pressure valves.
In the utility model, the oil inlet and the oil return port of the main valve body can be regarded as the oil inlet and the oil return port of the device body.
The oil inlet of the main valve body is connected with the oil inlet of the first pressure valve through a first throttling valve.
And a control oil port of the main valve body is connected with an oil inlet of the first pressure valve through a second throttling valve.
The pressure limiter comprises a pressure limiter valve body, a pressure limiter valve sleeve, a pressure limiter valve core, a pressure limiter spring and a control knob, the control knob is screwed into the pressure limiter valve sleeve, the pressure limiter valve sleeve is inserted into the pressure limiter valve body,
the pressure limiter spring is arranged in the inner cavity of the pressure limiter valve sleeve, one end of the pressure limiter spring is connected with the pressure limiter valve core, and the other end of the pressure limiter spring is connected with the control knob.
The pressure limiter valve body is internally provided with a main valve body control oil way connected with the main valve body.
The oil inlet of the device body is connected with the pump through a filter.
An explosion-proof pressure sensor is arranged between the filter and the oil inlet of the device body.
A one-way valve is arranged between the filter and the pump.
The utility model is suitable for working conditions as follows: the maximum pressure is 350bar, the flow is 1L/min-600L/min, and the working temperature is less than 120 ℃.
Has the advantages that: by adopting the technical scheme, the utility model can keep the performance of the traditional standard explosion-proof direct-acting proportional overflow valve, keep the flow control function within the designed flow range, and also can achieve the performance with small error.
Drawings
FIG. 1 is a schematic diagram of a functional connection according to the present invention;
FIG. 2 is a schematic view of the main valve body and pressure limiter of the present invention after they have been connected;
FIG. 3 is a schematic diagram of a first relief valve according to the present invention;
FIG. 4 is a schematic diagram of a voltage limiter according to the present invention;
FIG. 5 is a schematic structural view of the present invention;
FIG. 6 is a schematic diagram of an oil circuit connection according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific drawings. It is noted that the terms "first," "second," "third," "fourth," and the like (if any) in the description and in the claims of the utility model are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises" or "comprising," and any variations thereof, are intended to cover non-exclusive inclusions, such that a product or apparatus that comprises a list of elements or units is not necessarily limited to those elements or units expressly listed, but may include other elements or units not expressly listed or inherent to such product or apparatus.
Referring to fig. 1, 5 and 6, the fuel explosion-proof high-pressure control device comprises a device body 1, wherein the device body 1 is provided with an oil inlet P and an oil return port T, the device body is connected with a pipeline pressure system through the oil inlet P and the oil return port T, the pipeline pressure system comprises a pump 2 and a motor 3, and the motor 3 is connected with the pump 2.
The device body comprises a main valve body 101, a first pressure valve 1021, a second pressure valve 1022 and a first overflow valve 103, wherein the first pressure valve 1021 and the second pressure valve 1022 adopt explosion-proof proportional pressure valves;
an oil inlet of the main valve body 101 is connected with an oil inlet of a first pressure valve 1021, an oil return port of the main valve body 101 is connected with an oil return tank of a pipeline pressure system, and a control oil port of the main valve body 101 is connected with an oil inlet of the first pressure valve 1021;
an oil return port of the first pressure valve 1021 is connected with an oil inlet of the first overflow valve 103;
an oil return port of the first overflow valve 103 is connected with an oil return tank of the pipeline pressure system;
an oil inlet of the second pressure valve 1022 is connected with an oil inlet of the first overflow valve 103, and an oil return port of the second pressure valve 1022 is connected with an oil return tank of the pipeline pressure system;
as shown in fig. 2 and 5, the main valve body 101 is provided with an oil inlet P, an oil return port T and a control oil port X, a valve core 1011 is arranged in a working oil cavity of the main valve body 101, and is inserted into the working oil cavity of the main valve body 101 in a plug-in manner, and can move up and down in the working oil cavity, and the main valve body 101 is connected with the pressure limiter 105 through a control oil path; the main valve body 101 is provided with an explosion-proof plug 1012. Fig. 5 shows a structure in which the first pressure valve, the second pressure valve, and the first relief valve are mounted above the pressure limiter 105, and the structure shown in the figure shows only the first pressure valve 1021, and it can be considered that the first pressure valve, the second pressure valve, and the first relief valve overlap in the direction of view of the figure. In addition, as shown in fig. 5, an exhaust port 10211 is disposed on the valve body of the first pressure valve 1021, and the exhaust port 10211 is connected to the control oil chamber of the first pressure valve 1021 through an exhaust pipe built in the valve body. The same position of the second pressure valve 1022 is also provided with a vent hole and a vent line.
Fig. 6 shows a schematic structure of one oil connection arrangement of the oil connection according to fig. 1.
In the present invention, the oil inlet and the oil return port of the main valve body 101 can be regarded as the oil inlet and the oil return port of the device body.
In some embodiments, the oil inlet of the main valve body 101 is connected to the oil inlet of the first pressure valve 1021 through a first throttle 1041.
In some embodiments, the control oil port of the main valve body 101 is connected to the oil inlet of the first pressure valve 1021 via a second throttle 1042.
The structure of the first relief valve 103 of the present invention may be arranged as shown in fig. 3: the first overflow valve comprises an overflow valve body 1031, an overflow valve sleeve 1052, an overflow valve core 1053, an overflow valve spring 1054 and an overflow valve control knob 1055,
the overflow valve control knob 1055 is screwed into the overflow valve sleeve 1052, the overflow valve sleeve 1052 is inserted into the overflow valve body 1051, the overflow valve spring 1054 is arranged in the inner cavity of the overflow valve sleeve 1052, one end of the overflow valve spring 1053 is connected with the overflow valve spool 1053, and the other end of the overflow valve spring 1055 is connected with the overflow valve control knob 1055.
The structure of the inventive voltage limiter 105 can be arranged as shown in fig. 4: the pressure limiter 105 includes a pressure limiter valve body 1051, a pressure limiter valve sleeve 1052, a pressure limiter valve core 1053, a pressure limiter spring 1054 and a pressure limiter control knob 1055, the pressure limiter control knob 1055 is screwed into the pressure limiter valve sleeve 1052, the pressure limiter valve sleeve 1052 is inserted into the pressure limiter valve body 1051, the pressure limiter spring 1054 is arranged in the inner cavity of the pressure limiter valve sleeve 1052, one end of which is connected with the pressure limiter valve core 1053, and the other end is connected with the pressure limiter control knob 1055.
The structure shown in fig. 4 eliminates the end cap structure on the control knob.
In some of these embodiments, the oil inlet of the device body 1 is connected to the pump through the first filter 401.
In some embodiments, an explosion-proof pressure sensor 6 is arranged between the first filter 401 and the oil inlet of the device body 1. The explosion-proof pressure sensor 6 is used for feeding back a pressure value to the upper system in real time so as to enable the upper system to form closed-loop control according to the fed-back pressure value and the driving currents of the first pressure valve and the second pressure valve, and therefore the control precision of the proportional overflow pressure can be improved, and the dynamic response of the pressure control of the proportional overflow pressure can be improved.
In some of these embodiments, a one-way valve 7 is provided between the first filter 401 and the pump 2 to prevent oil return problems.
In some of these embodiments, a second filter 402 may also be provided in the connecting conduit between the pump 2 and the system supply tank.
The utility model is suitable for working conditions as follows: the maximum pressure is 350bar, the flow is 1L/min-600L/min, and the working temperature is less than 120 ℃.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. An explosion-proof high-pressure control device for fuel oil comprises a device body, wherein the device body is provided with an oil inlet and an oil return port, a pipeline pressure system is connected through the oil inlet and the oil return port, the pipeline pressure system comprises a pump and a motor, the motor is connected with the pump, and the explosion-proof high-pressure control device is characterized in that the device body comprises a main valve body, a first pressure valve, a second pressure valve and a first overflow valve,
an oil inlet of the main valve body is connected with an oil inlet of the first pressure valve, an oil return port of the main valve body is connected with an oil return box of the pipeline pressure system, and a control oil port of the main valve body is connected with an oil inlet of the first pressure valve;
an oil return port of the first pressure valve is connected with an oil inlet of the first overflow valve;
an oil return port of the first overflow valve is connected with an oil return tank of the pipeline pressure system;
an oil inlet of the second pressure valve is connected with an oil inlet of the first overflow valve, and an oil return port of the second pressure valve is connected with an oil return tank of the pipeline pressure system;
a valve core is arranged in a working oil cavity of the main valve body, and the main valve body is connected with a pressure limiter through a control oil way;
the first pressure valve and the second pressure valve are explosion-proof proportional pressure valves.
2. An explosion-proof high pressure fuel control device according to claim 1, wherein the oil inlet of the main valve body is connected with the oil inlet of the first pressure valve through a first throttle valve.
3. An explosion-proof high pressure control device for fuel oil of claim 1, wherein the control oil port of the main valve body is connected with the oil inlet of the first pressure valve through a second throttling valve.
4. The fuel oil explosion-proof high-pressure control device according to claim 1, 2 or 3, wherein the pressure limiter comprises a pressure limiter valve body, a pressure limiter valve sleeve, a pressure limiter valve core, a pressure limiter spring and a control knob, the control knob is screwed into the pressure limiter valve sleeve, the pressure limiter valve sleeve is inserted into the pressure limiter valve body,
the pressure limiter spring is arranged in the inner cavity of the pressure limiter valve sleeve, one end of the pressure limiter spring is connected with the pressure limiter valve core, and the other end of the pressure limiter spring is connected with the control knob;
a main valve body control oil way connected with the main valve body is arranged in the pressure limiter valve body.
5. An explosion-proof high pressure control device of fuel oil as set forth in claim 4, characterized in that the inlet port of the device body is connected to the pump through a filter.
6. An explosion-proof high pressure fuel control device according to claim 5, wherein an explosion-proof pressure sensor is arranged between the filter and the oil inlet of the device body.
7. An explosion-proof high pressure control device for fuel oil as set forth in claim 6, wherein a check valve is provided between said filter and said pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123376606.XU CN216895170U (en) | 2021-12-30 | 2021-12-30 | Fuel oil explosion-proof high-pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123376606.XU CN216895170U (en) | 2021-12-30 | 2021-12-30 | Fuel oil explosion-proof high-pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216895170U true CN216895170U (en) | 2022-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123376606.XU Active CN216895170U (en) | 2021-12-30 | 2021-12-30 | Fuel oil explosion-proof high-pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216895170U (en) |
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2021
- 2021-12-30 CN CN202123376606.XU patent/CN216895170U/en active Active
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