CN215979891U

CN215979891U - Liquid phase oil cooler

Info

Publication number: CN215979891U
Application number: CN202122506429.6U
Authority: CN
Inventors: 张锋; 王坤; 郭志彬; 王树鑫; 亓文超
Original assignee: Jereh Oil and Gas Engineering Corp
Current assignee: Jereh Oil and Gas Engineering Corp
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-03-08
Anticipated expiration: 2031-10-18

Abstract

The utility model discloses a liquid-phase oil cooler which comprises a cooler pipe box, wherein an oil inlet and an oil outlet are formed in the cooler pipe box, and the oil inlet and the oil outlet are both arranged above the cooler pipe box. Therefore, the oil inlet and the oil outlet of the liquid-phase oil cooler are arranged above the cooler pipe box, so that the oil in the cooler is kept in the cooler in a shutdown state, and the condition that the liquid level rises due to the fact that the oil in the cooler flows back to the oil-gas separator in the shutdown state is avoided.

Description

Liquid phase oil cooler

Technical Field

The utility model relates to the field of coolers, in particular to a liquid-phase oil cooler.

Background

For the oil injection screw compressor unit, lubricating oil provides lubrication and temperature reduction for each kinematic pair on one hand, and can be used for filling oil to a rotor to reduce the exhaust temperature of the unit on the other hand, so that a lubrication system is the most critical system of the oil injection screw compressor unit, and an oil cooler is one of core components.

During the operation of the compressor, lubricating oil provides a lubricating effect for the kinematic pair and the rotor, during the operation, part of the lubricating oil and a compression medium are discharged out of the compressor in a mixture state, at the moment, a high-temperature oil-gas mixture enters the oil-gas separator, the lubricating oil and the gas are separated through the oil-gas separator, the gas enters a downstream pipeline, the lubricating oil is left in the oil-gas separator, the lubricating oil left in the oil-gas separator is in a high-temperature state and needs to be pressurized through an oil pump or be guided into an oil cooler for cooling under the action of pressure difference, the cooled lubricating oil is filtered and then injected into the compressor again to provide a lubricating effect for the kinematic pair and the rotor, and the circulation is repeated.

Because the oil cooler generally relies on air cooling, in order to guarantee the radiating effect of the air cooler, the air cooler tube bundle is generally arranged at a higher position with good air flow, and the position is higher than the oil level in the oil-gas separator, the current conventional air cooler has the oil inlet and the oil outlet both arranged at the lower part of the air cooler tube bundle tube box, when the equipment is shut down, lubricating oil in the air cooler can fall back into the oil-gas separator under the action of gravity, so that the liquid level of the oil-gas separator rises sharply, and when the oil level in the oil-gas separator is overhigh, the separating effect of the oil-gas separator drops sharply, so that the oil cannot be effectively separated from the mixture, the oil consumption of the equipment is increased, and even the flooding phenomenon can occur, the equipment needs more additional lubricating oil for supplement, and therefore, the separating effect of the oil-gas separator directly influences the operation cost of customers.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the liquid phase cooler is provided, and the situation that the liquid level rises due to the fact that oil liquid in the cooler flows back to the oil-gas separator when the machine is stopped is avoided.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a liquid phase oil cooler, includes cooler pipe case, be equipped with oil inlet and oil-out on the cooler pipe case, the oil inlet is connected into oil pipe, oil pipe is connected out to the oil-out, it all is equipped with the bent pipe portion with going out oil pipe to advance oil pipe, the bent pipe portion is higher than the upper surface of cooler pipe case.

Compared with the prior art, the utility model has the following technical effects:

the oil inlet pipe and the oil outlet pipe are provided with the bent pipe parts, the bent pipe parts are located on the upper surface of the cooler pipe box, therefore, when the equipment is shut down, liquid in the oil inlet pipe and the oil outlet pipe falls, the bent pipe parts higher than the upper surface of the cooler pipe box can cut off the liquid, the phenomenon that the liquid falls from the inside of an air cooler when the equipment is shut down is eliminated, and the condition that the separation efficiency is low due to the fact that the liquid level of the oil-gas separator is too high when the equipment is shut down is avoided.

On the basis of the technical scheme, the utility model can be further improved as follows.

Preferably, the inner diameters of the oil inlet pipe and the oil outlet pipe are larger than 1.5 inches, the inner diameters of the oil pipes are large enough, when the machine is stopped, the surface tension of oil is not enough to enable the oil to fill the oil pipes, and the oil in the oil pipes can be broken after part of the oil falls down, so that the oil in the cooler pipe box is prevented from being pumped into the oil-gas separator by a siphon effect.

Preferably, the oil inlet and the oil outlet are both arranged on the upper surface of the cooler pipe box, and the oil inlet pipe and the oil outlet pipe extend into the cooler pipe box and are substantially flush with the lower surface of the top plate of the cooler pipe box. Even if the oil inlet pipe and the oil outlet pipe are thin, the siphon phenomenon can be generated, and as the depth of the oil inlet pipe and the oil outlet pipe inserted into the cooler pipe box is basically equal to the lower surface of the top plate of the cooler pipe box, namely oil is absorbed downwards just beginning, the oil is forced to be disconnected, and the oil in the cooler pipe box is prevented from being sucked into the oil-gas separator.

Preferably, the top of the cooler pipe box and/or the top end of the elbow part is/are provided with an exhaust valve; when the equipment is put into use again, the gas in the cooler pipe box can be exhausted, so that the cooler pipe box is filled with oil.

Preferably, a one-way valve is arranged on the oil inlet pipeline; and the oil in the cooler pipe box is further prevented from flowing back to the oil-gas separator.

Preferably, the cooler pipe box comprises a first pipe box, a second pipe box and a radiating pipe communicated with the first pipe box and the second pipe box; the first channel box is internally divided into a first cavity and a second cavity by a partition plate, and the first cavity and the second cavity are respectively communicated to the second channel box through independent radiating pipes; the oil inlet is arranged on the upper surface of the first cavity, and the oil outlet is arranged on the upper surface of the second cavity.

The beneficial effect of adopting above-mentioned further scheme is that the fluid is forced to flow to first channel case from first channel case through the cooling tube to second channel case, and then by second channel case through the cooling tube, realizes the abundant heat transfer of fluid and outside air.

Preferably, the first chamber and the second chamber are arranged above and below each other;

preferably, the first chamber and the second chamber are horizontally arranged side by side;

preferably, the bottom parts of the first pipe box and the second pipe box are respectively provided with an oil drain port; the oil liquid in the pipe box is drained when the oil product is replaced.

Preferably, the first chamber and the second chamber are respectively provided with an oil drain at the bottom.

Drawings

FIG. 1 is a schematic diagram of a compressor unit;

FIG. 2 is a schematic view of the structure of a liquid-phase oil cooler of example 1;

FIG. 3 is a schematic view showing the structure of a liquid-phase oil cooler according to example 2;

FIG. 4 is a schematic view showing the structure of a liquid-phase oil cooler according to example 3;

FIG. 5 is a schematic view of a liquid-phase oil cooler according to example 4.

In the drawings, the parts names represented by the respective reference numerals are listed as follows:

1. a cooler header; 1.1, an oil inlet; 1.2, oil outlet; 1.3, a first channel box; 1.3.1, a first chamber; 1.3.2, a second chamber; 1.4, a second channel box; 2. an oil inlet pipe; 3. an oil outlet pipe; 4. a bent pipe portion; 5. an exhaust valve; 6. a one-way valve; 7. a radiating pipe; 8. an oil discharge port; 9. an oil-gas separator; 10. an oil pump, 11, a compressor; 12. and (7) an oil cooler.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

Fig. 1 is a schematic structural diagram of a compressor 11, in the operation process of the compressor 11, lubricating oil provides a lubricating effect for a kinematic pair and a rotor, in the operation process, part of the lubricating oil and a compression medium are discharged out of the compressor 11 in a mixed state, at this time, a high-temperature oil-gas mixture enters the oil-gas separator 9, the lubricating oil and gas are separated through the oil-gas separator 9, the gas enters a downstream pipeline, the lubricating oil is left in the oil-gas separator 9, the lubricating oil left in the oil-gas separator 9 is in a high-temperature state and needs to be pressurized by an oil pump 10 or be introduced into an oil cooler 12 for cooling under the action of pressure difference, the cooled lubricating oil is filtered and then injected into the compressor 11 again to provide a lubricating effect for the kinematic pair and the rotor, and the operation is repeated in a circulating manner.

Example 1

Fig. 2 is a schematic structural diagram of the liquid-phase oil cooler 12 according to the present invention. The liquid-phase oil cooler 12 comprises a cooler pipe box 1, an oil inlet 1.1 and an oil outlet 1.2 are arranged on the cooler pipe box 1, the oil inlet 1.1 and the oil outlet 1.2 are both arranged on the upper surface of the cooler pipe box 1, the cooler pipe box 1 comprises a first pipe box 1.3 and a second pipe box 1.4, and radiating pipes 7 (only two radiating pipes 7 are schematically drawn in the figure) communicated with the first pipe box 1.3 and the second pipe box 1.4, the oil inlet 1.1 is arranged on the upper surface of the first pipe box 1.3, and the oil outlet 1.2 is arranged on the upper surface of the second pipe box 1.4. Oil drain ports 8 are formed in the lower surfaces of the first pipe box 1.3 and the second pipe box 1.4 respectively, and exhaust valves 5 are arranged on the upper surfaces of the first pipe box 1.3 and the second pipe box 1.4.

Example 2:

referring to fig. 3, in the present embodiment, different from embodiment 1, the first channel 1.3 is divided into two chambers, i.e. a first chamber 1.3.1 and a second chamber 1.3.2, by a partition plate, and the first chamber 1.3.1 and the second chamber 1.3.2 are respectively communicated to the second channel 1.4 through independent heat pipes 7; the oil inlet 1.1 is arranged on the upper surface of the first cavity 1.3.1, and the oil outlet 1.2 is arranged on the upper surface of the second cavity 1.3.2. The bottom of the first chamber 1.3.1 and the second chamber 1.3.2 and the bottom of the second pipe box 1.4 are respectively provided with an oil drain port 8.

Example 3:

referring to fig. 4, in the present embodiment, different from embodiment 1, the first channel 1.3 is divided into two chambers, namely a first chamber 1.3.1 and a second chamber 1.3.2, which are disposed vertically by a partition plate, and the first chamber 1.3.1 and the second chamber 1.3.2 are respectively communicated to the second channel 1.4 through independent heat pipes 7; the oil inlet 1.1 is arranged on the upper surface of the first cavity 1.3.1, and the oil outlet 1.2 is arranged on the upper surface of the second cavity 1.3.2. The bottom of the first chamber 1.3.1 and the second chamber 1.3.2 and the bottom of the second pipe box 1.4 are respectively provided with an oil drain port 8.

Example 4:

referring to fig. 5, in the present embodiment, the oil inlet 1.1 and the oil outlet 1.2 are disposed at the side surfaces, but the oil inlet pipe 2 and the oil outlet pipe 3 are provided with the bent pipe portion 4, the topmost end of the bent pipe portion is higher than the upper surface of the cooler pipe box 1, and the oil inlet pipe 2 and the oil outlet pipe 3 are respectively provided with the check valve 6.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a liquid phase oil cooler, its characterized in that, includes cooler pipe case, be equipped with oil inlet and oil-out on the cooler pipe case, the oil inlet is connected into oil pipe, oil pipe is connected out to the oil-out, it all is equipped with the bent pipe portion with play oil pipe to advance oil pipe, the bent pipe portion is higher than the upper surface of cooler pipe case.

2. The liquid-phase oil cooler of claim 1, wherein the oil inlet and the oil outlet are both disposed at an upper surface of the cooler header.

3. The liquid phase oil cooler of claim 2, wherein the oil inlet pipe and the oil outlet pipe extend into the interior of the cooler pipe box to be substantially flush with a lower surface of a top plate of the cooler pipe box.

4. The liquid phase oil cooler of claim 1 wherein the top of the cooler tubes and/or the top of the elbow section is provided with a vent valve.

5. The liquid-phase oil cooler of claim 1, wherein a check valve is disposed on the oil inlet pipe.

6. The liquid phase oil cooler of claim 1, wherein the cooler header comprises a first header and a second header, the first header is divided into a first chamber and a second chamber by a partition, and the first chamber and the second chamber are respectively communicated to the second header through independent heat dissipation pipes; the oil inlet is arranged on the upper surface of the first cavity, and the oil outlet is arranged on the upper surface of the second cavity.

7. The liquid-phase oil cooler of claim 6, wherein the first and second chambers are arranged one above the other.

8. The liquid-phase oil cooler of claim 6, wherein the first and second chambers are horizontally disposed side-by-side.

9. The liquid-phase oil cooler according to any one of claims 6 to 8, wherein the first and second tank headers are provided with oil drain ports at the bottom thereof, respectively.

10. The liquid-phase oil cooler according to any one of claims 6 to 8, wherein the first and second chamber bottom portions are provided with oil discharge ports, respectively.