CN214308298U - Oil injection screw air compressor energy recovery system - Google Patents
Oil injection screw air compressor energy recovery system Download PDFInfo
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- CN214308298U CN214308298U CN202120222472.7U CN202120222472U CN214308298U CN 214308298 U CN214308298 U CN 214308298U CN 202120222472 U CN202120222472 U CN 202120222472U CN 214308298 U CN214308298 U CN 214308298U
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Abstract
The utility model discloses an oil spout screw compressor machine energy recuperation system relates to air compressor machine energy recuperation system field. The utility model comprises a plate heat exchanger connected with the screw compressor in a closed circulation manner, wherein the plate heat exchanger is provided with a water inlet pipeline, a water outlet pipeline, a circulating oil inlet pipeline and a circulating oil outlet pipeline; the water inlet pipeline is provided with a water outlet temperature sensor and a waterway two-way proportional valve; the water outlet pipeline is provided with a water inlet temperature sensor; an oil inlet pressure gauge and an oil inlet temperature sensor are arranged on the circulating oil inlet pipeline; and a three-way proportional valve and an oil outlet pressure gauge are installed on the circulating oil outlet pipeline, a third valve port of the three-way proportional valve is connected with an oil cooler of the screw compressor, and an oil outlet temperature sensor is installed on the three-way proportional valve in parallel on the circulating oil outlet pipeline. The utility model discloses can set for the constancy by oneself according to site work condition, applicable in different operating modes, heat exchange efficiency is higher.
Description
Technical Field
The utility model belongs to air compressor machine energy recuperation system field especially relates to an oil spout screw air compressor machine energy recuperation system.
Background
The energy recovery system of the existing oil injection screw air compressor is generally transformed by taking heat from the hot side of a temperature control valve of the oil injection screw air compressor, cooling oil is regulated by the temperature control valve after being separated by an oil-gas barrel, and when the temperature of the cooling oil is lower than the design temperature of a valve core of the temperature control valve, the cooling oil returns to a compression host through an oil filter to participate in cooling. When the temperature of the cooling oil is higher than the design temperature of the valve core of the temperature control valve, the cooling oil enters the cold air of the original oil injection screw air compressor after heat exchange of the plate heat exchanger of the energy recovery system, and returns to the compression main engine through the oil filter to participate in cooling. The prior art has the following disadvantages: 1. when the temperature of inlet water at the application end of the energy recovery system is lower, the temperature of cooling oil is easily cooled too low, so that condensed water is increased, and oil is emulsified; 2. cooling oil after heat exchange of the energy recovery system returns to an oil cooler of the oil-injected screw air compressor, and part of heat is dissipated and adjusted by the original cooling mode of the air compressor and is also in risk of excessive cooling; 3. when cooling oil of the oil-injected screw air compressor participates in heat exchange, the cooling oil passes through the plate heat exchanger HC of the energy recovery system and the oil cooler of the original air compressor, and the pressure loss is large. Therefore, the oil injection screw air compressor energy recovery system is significant in view of the problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides an oil spout screw compressor machine energy recuperation system has solved above problem.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model discloses an oil injection screw air compressor energy recovery system, which comprises a plate heat exchanger connected with the closed cycle of a screw compressor, wherein the plate heat exchanger is provided with a water inlet pipeline, a water outlet pipeline, a circulating oil inlet pipeline and a circulating oil outlet pipeline;
the water inlet pipeline is provided with a water outlet temperature sensor and a waterway two-way proportional valve; a water inlet temperature sensor is arranged on the water outlet pipeline;
an oil inlet pressure gauge and an oil inlet temperature sensor are mounted on the circulating oil inlet pipeline; the circulating oil outlet pipeline is provided with a three-way proportional valve and an oil outlet pressure gauge; the three-way proportional valve is arranged between the oil outlet pressure gauge and an oil filter of the screw compressor, a third valve port of the three-way proportional valve is connected with an oil cooler of the screw compressor, and the three-way proportional valve is provided with an oil outlet temperature sensor in parallel on the circulating oil outlet pipeline.
Further, the oil inlet temperature sensor is used for monitoring the energy recovery oil inlet temperature; the oil inlet pressure gauge is used for monitoring the energy recovery oil inlet pressure.
Further, the oil outlet temperature sensor is used for monitoring the temperature of the energy recovery oil outlet; the oil outlet pressure gauge is used for monitoring the oil outlet pressure of the energy recovery.
Further, the inlet water temperature sensor is used for monitoring the inlet water temperature of the energy recovery.
Further, the outlet water temperature sensor is used for monitoring the energy recovery outlet water temperature.
Furthermore, the three-way proportional valve and the two-way proportional valve both adopt electric valves.
Compared with the prior art, the utility model following beneficial effect including:
1. the utility model discloses a system oil circuit tee bend proportional valve passes through control system signal of telecommunication control, can set for the constancy by oneself according to site work condition, applicable in the operating mode of difference.
2. The utility model discloses a high temperature cooling oil is through plate heat exchanger HC cooling back, directly can return the compression host computer, needn't pass through again there is the filter, so the oil pressure loss is lower.
3. The utility model discloses a high temperature cooling oil is through the cold back of going of plate heat exchanger HC, directly can return the compression host computer, needn't avoid calorific loss through oily filter again, so heat exchange efficiency is higher.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an energy recovery system of an oil-injected screw air compressor of the present invention;
FIG. 2 is a schematic diagram of an energy recovery system of a conventional oil-injected screw compressor;
in the drawings, the components represented by the respective reference numerals are listed below:
t1-oil inlet temperature sensor, T2-oil outlet temperature sensor, T3-water inlet temperature sensor, T4-water outlet temperature sensor, RV 1-three-way proportional valve, RV 2-two-way proportional valve, P1-oil inlet pressure gauge, P2-oil outlet pressure gauge and HC-plate heat exchanger.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "parallel", and the like refer to orientation or positional relationship only for convenience of description and simplicity of description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
As shown in fig. 2, in the conventional energy recovery system for the oil-injected screw air compressor, heat is usually taken from the hot side of the oil-injected screw air compressor with the temperature control valve, after the cooling oil is separated by the oil-gas barrel, the cooling oil is adjusted by the temperature control valve, and when the temperature of the cooling oil is lower than the design temperature of the valve core of the temperature control valve, the cooling oil returns to the compression host through the oil filter to participate in cooling. When the temperature of the cooling oil is higher than the design temperature of the valve core of the temperature control valve, the cooling oil enters the cold air of the original oil injection screw air compressor after heat exchange of the plate heat exchanger of the energy recovery system, and returns to the compression main engine through the oil filter to participate in cooling. The prior art has the following disadvantages: 1. when the temperature of inlet water at the application end of the energy recovery system is lower, the temperature of cooling oil is easily cooled too low, so that condensed water is increased, and oil is emulsified; 2. cooling oil after heat exchange of the energy recovery system returns to an oil cooler of the oil-injected screw air compressor, and part of heat is dissipated and adjusted by the original cooling mode of the air compressor and is also in risk of excessive cooling; 3. when cooling oil of the oil-injected screw air compressor participates in heat exchange, the cooling oil passes through the plate heat exchanger HC of the energy recovery system and the oil cooler of the original air compressor, and the pressure loss is large. The present solution is therefore proposed to address the above problems.
Referring to fig. 1, the energy recovery system of an oil-injected screw air compressor of the present invention includes a plate heat exchanger HC connected to a closed cycle of a screw compressor, wherein the plate heat exchanger HC is provided with a water inlet pipe, a water outlet pipe, a circulating oil inlet pipeline and a circulating oil outlet pipeline;
an outlet water temperature sensor T4 and a waterway two-way proportional valve RV2 are arranged on the inlet pipeline; the water outlet pipeline is provided with a water inlet temperature sensor T3;
an oil inlet pressure gauge P1 and an oil inlet temperature sensor T1 are arranged on the circulating oil inlet pipeline; a three-way proportional valve RV1 and an oil outlet pressure gauge P2 are arranged on the circulating oil outlet pipeline; the three-way proportional valve RV1 is installed between the oil outlet pressure gauge P2 and an oil filter of the screw compressor, the third valve port of the three-way proportional valve RV1 is connected with an oil cooler of the screw compressor, and the three-way proportional valve RV1 is provided with an oil outlet temperature sensor T2 in parallel on the circulating oil outlet pipeline.
Wherein the oil inlet temperature sensor T1 is used to monitor the energy recovery oil inlet temperature; an oil feed pressure gauge P1 is used to monitor the energy recovery oil feed pressure.
The oil outlet temperature sensor T2 is used for monitoring the temperature of the energy recovery oil, and the temperature is used as feedback to adjust the opening of a three-way proportional valve RV1 so as to control the amount of cooling oil entering an oil cooler of the oil injection screw compressor or a compression main machine; the oil outlet pressure gauge P2 is used to monitor the energy recovery oil outlet pressure.
Wherein, the temperature sensor T3 of intaking is used for monitoring energy recuperation and intakes the water temperature.
The water outlet temperature sensor T4 is used for monitoring the energy recovery water outlet temperature, the temperature is fed back, the opening degree of the water outlet two-way proportional valve RV2 is adjusted, and the purpose of controlling the water outlet temperature is achieved by adjusting the water outlet quantity of the valve.
Wherein, three-way proportional valve RV1 and two-way proportional valve RV2 all adopt the motorised valve.
The oil inlet pressure gauge P1 is arranged on an energy recovery system water inlet pipeline and used for monitoring the energy recovery water inlet pressure; the oil outlet pressure gauge P2 is installed on the water outlet pipeline of the energy recovery system and used for monitoring the pressure of the energy recovery outlet water. The HC pressure loss of the plate heat exchanger is calculated through the water inlet pressure and the water outlet pressure, the water side structure and the blocking condition of the plate heat exchanger are known through comparison with design parameters, and the system gives an audible and visual alarm when the water side structure exceeds a limit value.
The utility model discloses a theory of operation is:
after the oil injection screw air compressor is started, cooling oil is separated out through the oil gas barrel and enters the temperature control valve, the low-temperature cooling oil directly enters the compression main machine through the oil filter to participate in compression, a bypass of the temperature control valve is gradually opened along with the gradual rise of the temperature of the cooling oil, the high-temperature cooling oil enters the plate type heat exchanger HC of the energy recovery system to exchange heat with water at an application end, and heat is recycled. The cooling oil after heat exchange enters an oil way three-way proportional valve RV1, the controller adjusts the opening degree of the oil way three-way proportional valve RV1 by comparing the set value of the system oil temperature with the oil outlet temperature sensor T2, at the moment, the low-temperature cooling oil returns to the compression host through the oil filter, the high-temperature cooling oil returns to the compression host after being cooled by the oil cooler, and the oil outlet temperature after heat exchange is constant by adjusting the opening degree of the oil way three-way proportional valve RV 1. The controller adjusts the opening degree of a water path two-way proportional valve RV2 by comparing a system water temperature set value with an outlet water temperature sensor T4, the outlet water temperature is lower than the set value, and the opening degree of the two-way proportional valve RV2 is reduced; when the outlet water temperature is higher than the set value, the opening degree of the two-way proportional valve RV2 is increased, and the outlet water temperature is constant by adjusting the opening degree of the two-way proportional valve RV 2. The system calculates real-time pressure loss of plate heat exchanger HC through detecting oil inlet pressure gauge P1 and oil outlet pressure gauge P2, and by comparing with design parameters, knows the water side structure and the blocking condition of the plate heat exchanger, and the system gives an audible and visual alarm when exceeding a limit value. The controller displays the oil inlet temperature sensor T1 and the water inlet temperature sensor T3 in real time, and the temperature conditions of oil and water before and after heat exchange can be visually seen, so that the heat exchange effect of the plate heat exchanger is judged.
Has the advantages that:
1. the utility model discloses a system oil circuit tee bend proportional valve passes through control system signal of telecommunication control, can set for the constancy by oneself according to site work condition, applicable in the operating mode of difference.
2. The utility model discloses a high temperature cooling oil is through plate heat exchanger HC cooling back, directly can return the compression host computer, needn't pass through again there is the filter, so the oil pressure loss is lower.
3. The utility model discloses a high temperature cooling oil is through the cold back of going of plate heat exchanger HC, directly can return the compression host computer, needn't avoid calorific loss through oily filter again, so heat exchange efficiency is higher.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. An oil injection screw air compressor energy recovery system comprises a plate heat exchanger (HC) connected with a screw compressor in a closed circulation mode, and is characterized in that a water inlet pipeline, a water outlet pipeline, a circulating oil inlet pipeline and a circulating oil outlet pipeline are arranged on the plate heat exchanger (HC);
an outlet water temperature sensor (T4) and a waterway two-way proportional valve (RV2) are arranged on the water inlet pipeline; the water outlet pipeline is provided with a water inlet temperature sensor (T3);
an oil inlet pressure gauge (P1) and an oil inlet temperature sensor (T1) are arranged on the circulating oil inlet pipeline; a three-way proportional valve (RV1) and an oil outlet pressure gauge (P2) are installed on the circulating oil outlet pipeline; the three-way proportional valve (RV1) is installed between an oil outlet pressure gauge (P2) and an oil filter of the screw compressor, a third valve port of the three-way proportional valve (RV1) is connected with an oil cooler of the screw compressor, and an oil outlet temperature sensor (T2) is installed on the circulating oil outlet pipeline in parallel on the three-way proportional valve (RV 1).
2. The oil injection screw air compressor energy recovery system according to claim 1, wherein the oil inlet temperature sensor (T1) is used for monitoring the energy recovery oil inlet temperature; the oil inlet pressure gauge (P1) is used for monitoring energy recovery oil inlet pressure.
3. The oil injection screw air compressor energy recovery system according to claim 1, wherein the oil outlet temperature sensor (T2) is used for monitoring the energy recovery oil outlet temperature; the oil outlet pressure gauge (P2) is used for monitoring the energy recovery oil outlet pressure.
4. The oil-injected screw air compressor energy recovery system according to claim 1, wherein the inlet water temperature sensor (T3) is configured to monitor the energy recovery inlet water temperature.
5. The oil-injected screw air compressor energy recovery system as claimed in claim 1, wherein the leaving water temperature sensor (T4) is used for monitoring the leaving water temperature of energy recovery.
6. The energy recovery system of the oil-injected screw air compressor as claimed in claim 1, wherein the three-way proportional valve (RV1) and the two-way proportional valve (RV2) both adopt electric valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120222472.7U CN214308298U (en) | 2021-01-27 | 2021-01-27 | Oil injection screw air compressor energy recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120222472.7U CN214308298U (en) | 2021-01-27 | 2021-01-27 | Oil injection screw air compressor energy recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214308298U true CN214308298U (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120222472.7U Active CN214308298U (en) | 2021-01-27 | 2021-01-27 | Oil injection screw air compressor energy recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214308298U (en) |
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2021
- 2021-01-27 CN CN202120222472.7U patent/CN214308298U/en active Active
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