CN209586836U - A kind of pressure control device of thermal-hydraulic system - Google Patents
A kind of pressure control device of thermal-hydraulic system Download PDFInfo
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- CN209586836U CN209586836U CN201920210795.7U CN201920210795U CN209586836U CN 209586836 U CN209586836 U CN 209586836U CN 201920210795 U CN201920210795 U CN 201920210795U CN 209586836 U CN209586836 U CN 209586836U
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Abstract
The utility model relates to a kind of regulators, more particularly to a kind of pressure control device of thermal-hydraulic system, it easily burns operator when solving existing manual overflow valve regulation and proportional dump valve long term high temperature works the technical problem that volatile magnetic conductance causes system pressure unstable.The pressure control device of the utility model includes cooler, proportional dump valve and the guiding manual overflow valve with damping hole；The oil outlet of guiding manual overflow valve is connected with oil return line, and external control port is connected with the oil inlet interface of cooler；The oil inlet of the proportional dump valve is connected with the oil out port of cooler, and the oil outlet of proportional dump valve is connected with oil return line.The utility model can realize the remote adjustment to thermal-hydraulic system pressure, avoid the operator that burns, while be able to achieve the non high temperature hydraulic environment of hydraulic electromagnet, it is ensured that the performance of proportional dump valve, and then improve the stability of hydraulic system pressure.
Description
Technical field
The utility model relates to a kind of regulators, and in particular to a kind of pressure control device of thermal-hydraulic system.
Background technique
In thermal-hydraulic system, the mode of manual overflow valve (such as Fig. 1) or proportional pressure control valve (such as Fig. 2) is generallyd use to adjust
Save system pressure.
The pressure regulation of manual overflow valve is more stable, but need to be adjusted at hydraulic system scene.Since thermal-hydraulic system is deposited
The oil spout the case where, when operator is adjusted, the regulation handle of manual overflow valve is easy the operator that burns, and it is hidden to there is safety
Suffer from.
The electric proportion adjustment of proportional pressure control valve use, the danger for manpower of burning when eliminating Field adjustment, but proportional overflow
The electromagnet of valve works at high temperature for a long time, it is possible to will appear magnet loss phenomenon, can not work normally overflow valve, therefore can go out
The case where existing pressure is not achieved, cause system pressure unstable.
Summary of the invention
The utility model provides a kind of pressure control device of thermal-hydraulic system, to solve existing manual overflow valve regulation
Shi Yi burn operator and proportional dump valve long term high temperature work may the loss of excitation technology that causes system pressure unstable ask
Topic.
The technical solution of the utility model is: a kind of control device of thermal-hydraulic system is characterized in that,
Including cooler, proportional dump valve and guiding manual overflow valve with damping hole；
The oil inlet of the guiding manual overflow valve is connect with oil feed line, the oil outlet of guiding manual overflow valve and oil return
Pipeline is connected, and external control port is connected with the oil inlet interface of cooler；
The oil inlet of the proportional dump valve is connected with the oil out port of cooler, the oil outlet of proportional dump valve and oil return
Pipeline is connected.
Further, the latus rectum of the proportional dump valve is 4mm.
Further, the cooler includes cooling chamber and is set to cooling indoor coil pipe；Cooling chamber is provided with cooling
Medium, the oil inlet interface and oil out port of cooler are arranged on the side wall of the cooling chamber, and are connected to by the coil pipe；It is cold
But cooling medium inlet and cooling medium outlet are additionally provided on the side wall of room.
Further, the indoor cooling medium of the cooling is water or refrigerant.
Further, the coil pipe is stainless steel tube.
Further, the internal diameter of the coil pipe is 3mm.
Compared with prior art, the utility model has the advantage that
(1) guarantee operator's safety.Proportional dump valve in the utility model uses electrical regulating system pressure, personnel
When operation, electric operation part can control system pressure, personnel and the hydraulic equipment blocking of high temperature, the oil liquid that will not be sprayed
It burns.
(2) stability of system pressure is improved.Oil liquid before the proportional dump valve of pressure regulation is dropped in the utility model
Temperature processing, is in the control electromagnet of proportional dump valve in normal temperature environment, the performance of proportional dump valve is guaranteed, will not
There is the magnet loss phenomenon of electromagnet, to improve the stability of system pressure.
Detailed description of the invention
Fig. 1 is a kind of schematic illustration of scheme of the prior art；
Fig. 2 is the schematic illustration of prior art another kind scheme；
Fig. 3 is the pressure control device schematic illustration of the utility model；
Fig. 4 is the pressure control device cooler construction schematic diagram of the utility model；
Appended drawing reference: 1- guiding manual overflow valve, 2- damping hole, 3- cooler, 4- proportional dump valve, 31- coil pipe, 32-
Cooling chamber, 33- cooling medium inlet, 34- oil inlet interface, the outlet of 35- cooling medium, 36- oil out port.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Referring to Fig. 3 and Fig. 4, the pressure control device of the utility model thermal-hydraulic system, including cooler 3, ratio tune
Pressure valve 4 and guiding manual overflow valve 1 with damping hole 2；The oil outlet of guiding manual overflow valve 1 is connected with oil return line,
External control port is connected with the oil inlet interface 34 of cooler 3；
The oil inlet of the proportional dump valve 4 is connected with the oil out port 36 of cooler 3, the oil outlet of proportional dump valve 4
It is connected with oil return line.
High temperature hydraulic oil enters guiding manual overflow valve 1 through oil feed line, damps in the valve by guiding manual overflow valve 1
Hole 2 is divided for two-way, wherein entering the pilot valve of guiding manual overflow valve 1 all the way, pilot valve is set as system safe pressure, as
The safeguard protection of system；Another way enters cooler 3, enters proportional dump valve 4 through the oil liquid after cooling of cooler 3, passes through ratio
Example pressure regulator valve 4 adjusts guide's cavity pressure of guiding manual overflow valve 1, and then control system pressure；
High-temperature oil liquid enters back into proportional dump valve after cooling, and the control electromagnet of proportional dump valve is made to be in normal temperature environment
In, it is not in magnet loss phenomenon, and then ensure that hydraulic system pressure is stablized；Using proportional dump valve tele-control system pressure,
Without entering Field adjustment, the operator that burns is avoided.
Since the pilot control oil mass of guiding manual overflow valve is smaller, use latus rectum for the ratio tune of 4mm in the present embodiment
The pressure of first guide cavity is adjusted in pressure valve.
In the present embodiment, cooler 3 includes cooling chamber 32 and is set to cooling indoor coil pipe 31, and the oil inlet of cooler connects
Mouth 34 and oil out port 36 are arranged on the side wall of cooling chamber 32, and are connected to by coil pipe 31；Cooling chamber 32 is provided with cooling Jie
Matter is additionally provided with cooling medium inlet 33 and cooling medium outlet 35 on the side wall of cooling chamber 32；Cooling medium can using water or
Refrigerant.
Domestic, external guiding manual overflow valve pilot control flow is no more than 2L/min, and domestic, external routine is first
The use temperature of manual overflow valve is led no more than 70 DEG C.3 inner coil pipe heating power of cooler calculates according to the following formula:
Wherein, V: the hydraulic volume (m that need to cool down3)；
C: oily specific heat capacity (wh/ (kg DEG C))；
ρ: hydraulic density (kg/m3)；
Δ t: temperature drop (DEG C)；
T: heat dissipation time (h).
Coil pipe in radiator 3 need to all radiate the power of fever, and heat power calculates according to the following formula:
Wherein, K: heat transfer coefficient；
A: heat transfer area (m2), A=3.14 × D × L；
D: coil diameter (m)；
L: coil lengths (m)；
Δ t: temperature drop (DEG C).
Coil lengths in cooler 3 can be obtained by two above formula:
Wherein, V: the hydraulic volume (m that need to cool down3)；
C: oily specific heat capacity (wh/ (kg DEG C))；
ρ: hydraulic density (kg/m3)；
K: the heat transfer coefficient of coil pipe；
D: coil diameter (m)；
Δ t: temperature drop (DEG C).
The coil pipe of the present embodiment uses the stainless steel tube of hydraulic pressure resistant pressure, and heat transfer coefficient is 14.7~15.2w/m2K,
Internal diameter is 3mm；The length of required coil pipe can be calculated in conjunction with above formula and the hydraulic volume that need to cool down, temperature drop equivalence.
Claims (6)
1. a kind of pressure control device of thermal-hydraulic system, it is characterised in that: including cooler (3), proportional dump valve (4) and
Guiding manual overflow valve (1) with damping hole (2)；
The oil inlet of the guiding manual overflow valve (1) is connect with oil feed line, the oil outlet of guiding manual overflow valve (1) with return
Oil pipe line is connected, and external control port is connected with the oil inlet interface (34) of cooler (3)；
The oil inlet of the proportional dump valve (4) is connected with the oil out port (36) of cooler (3), and proportional dump valve (4) goes out
Hydraulic fluid port is connected with oil return line.
2. a kind of pressure control device of thermal-hydraulic system according to claim 1, it is characterised in that: the ratio tune
The latus rectum of pressure valve (4) is 4mm.
3. a kind of pressure control device of thermal-hydraulic system according to claim 1 or 2, it is characterised in that: described cold
But device (3) includes cooling chamber (32) and the coil pipe (31) being set in cooling chamber (32)；Cooling chamber (32) is provided with cooling medium,
The oil inlet interface (34) and oil out port (36) of cooler (3) are arranged on the side wall of the cooling chamber (32), and by described
Coil pipe connection；Cooling medium inlet (33) and cooling medium outlet (35) are additionally provided on the side wall of cooling chamber (32).
4. a kind of pressure control device of thermal-hydraulic system according to claim 3, it is characterised in that: the cooling chamber
(32) cooling medium in is water or refrigerant.
5. a kind of pressure control device of thermal-hydraulic system according to claim 4, it is characterised in that: the coil pipe
It (31) is stainless steel tube.
6. a kind of pressure control device of thermal-hydraulic system according to claim 5, it is characterised in that: the coil pipe
(31) internal diameter is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920210795.7U CN209586836U (en) | 2019-02-18 | 2019-02-18 | A kind of pressure control device of thermal-hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920210795.7U CN209586836U (en) | 2019-02-18 | 2019-02-18 | A kind of pressure control device of thermal-hydraulic system |
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| CN209586836U true CN209586836U (en) | 2019-11-05 |
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| CN201920210795.7U Active CN209586836U (en) | 2019-02-18 | 2019-02-18 | A kind of pressure control device of thermal-hydraulic system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707691A (en) * | 2019-02-18 | 2019-05-03 | 西安庆安航空试验设备有限责任公司 | A kind of pressure control device of thermal-hydraulic system |
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2019
- 2019-02-18 CN CN201920210795.7U patent/CN209586836U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707691A (en) * | 2019-02-18 | 2019-05-03 | 西安庆安航空试验设备有限责任公司 | A kind of pressure control device of thermal-hydraulic system |
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