CN214275351U - LPG cooling recovery plant - Google Patents
LPG cooling recovery plant Download PDFInfo
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- CN214275351U CN214275351U CN202120272753.3U CN202120272753U CN214275351U CN 214275351 U CN214275351 U CN 214275351U CN 202120272753 U CN202120272753 U CN 202120272753U CN 214275351 U CN214275351 U CN 214275351U
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Abstract
The invention provides LPG cooling recovery equipment, which comprises a heat exchange unit and a gas-liquid separation unit, wherein the heat exchange unit is connected with the gas-liquid separation unit; the heat exchange unit comprises a water circulation heat exchanger, a circulating water and control assembly and a heat exchange and control assembly; the gas-liquid separation unit comprises a gas-liquid separator, and an exhaust and control assembly and a liquid outlet and control assembly are mounted on the gas-liquid separator. The LPG cooling and recycling equipment provided by the invention is convenient to operate, safe and stable, has wide application range, can be used for liquefying and storing gaseous LPG, can also be used for recycling LPG in a waste long pipeline, and can also be used for recycling redundant LPG in a gas supply pipeline.
Description
Technical Field
The invention belongs to the technical field of LPG (liquefied petroleum gas) conveying, and particularly relates to LPG (liquefied petroleum gas) cooling and recycling equipment.
Background
LPG (Liquefied Petroleum Gas, abbreviated as LPG) has wide application range and large dosage, and mainly comprises propane and butane and a small amount of olefin. LPG is stored in a storage tank in a liquid state under a suitable pressure and is often used as a cooking fuel, i.e. liquefied gas which we often use. Because gaseous LPG occupies bulky, when mill or user gaseous LPG quantity is not stable enough, in addition, LPG also need retrieve in the pipeline is failed to the abandonment length, if unnecessary LPG directly discharges and can cause the pollution, directly stores with the gaseous state, then can occupy more space, is difficult for storing. Accordingly, there is a need for improved LPG recovery methods and devices.
Disclosure of Invention
In view of the above, the present invention provides an LPG cooling and recycling apparatus to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an LPG cooling recovery device comprises a heat exchange unit and a gas-liquid separation unit; the heat exchange unit comprises a water circulation heat exchanger, a circulating water and control assembly and a heat exchange and control assembly; the gas-liquid separation unit comprises a gas-liquid separator, and an exhaust and control assembly and a liquid outlet and control assembly are mounted on the gas-liquid separator;
the heat exchange and control assembly comprises a heat exchange pipeline, the main body of the heat exchange pipeline is arranged in the water circulation heat exchanger, the high-temperature gaseous LPG inlet end of the heat exchange pipeline is positioned outside the water circulation heat exchanger, the other end of the heat exchange pipeline is connected with the gas-liquid separator, and a recovery control valve assembly and a temperature transmitter are installed on a recovery pipe connected with the gas-liquid separator;
the circulating water and control assembly comprises a circulating water pipeline arranged on the water circulating heat exchanger, the circulating water pipeline comprises a water inlet pipe and a water outlet pipe, a water inlet control valve assembly is arranged on the water inlet pipe, a regulating valve in the water inlet control valve assembly is in signal connection with a temperature transmitter, and the opening degree of the regulating valve is controlled by the temperature transmitter on the recovery pipe so as to control the amount of circulating water;
the liquid outlet and control assembly comprises a liquid outlet pipeline and a liquid outlet control valve assembly arranged on the liquid outlet pipeline, a stop valve in the liquid outlet control valve assembly is in signal connection with a liquid level meter arranged on the gas-liquid separation, and the liquid level meter controls the opening and closing of the stop valve in the liquid outlet control valve assembly; the exhaust and control assembly includes an exhaust pipe and an exhaust control valve assembly mounted on the exhaust pipe.
Further, the water inlet control valve component further comprises an inlet stop valve which is arranged on the water inlet pipe and is close to one side of the circulating water inlet of the regulating valve, and an adjusting rear stop valve which is arranged on one side of the circulating water inlet of the regulating valve.
Further, on the inlet tube, the inlet stop valve is close to the circulating water inlet end, and is communicated with a circulating water bypass pipeline between the inlet stop valve and the adjusted stop valve and the inlet end, and the circulating water bypass stop valve is installed on the circulating water bypass pipeline.
Further, a circulating water outlet stop valve is installed on the water outlet pipe.
Further, an inlet stop valve is installed at a high-temperature gaseous LPG inlet end of the heat exchange pipeline, and an inlet safety valve is installed on one side, far away from the high-temperature gaseous LPG inlet end, of the heat exchange pipeline.
Further, the recovery control valve assembly comprises a heat exchange outlet stop valve and a heat exchange outlet ball valve which are sequentially arranged on the recovery pipe.
Further, go out liquid control valve subassembly still includes the back stop valve that cuts off that is in the trip valve and is close to liquid outlet one side on the drain pipe to and be in the liquid stop valve that goes out that the liquid outlet one side was kept away from to the trip valve.
Further, a liquid outlet bypass pipeline is communicated between the cut-off stop valve close to the liquid outlet end and the liquid outlet stop valve far away from the liquid outlet end on the liquid outlet pipeline, and a liquid outlet bypass stop valve is installed on the liquid outlet bypass pipeline.
Further, the exhaust control valve assembly comprises an exhaust safety valve and a release valve which are sequentially arranged on the exhaust pipe.
Compared with the prior art, the invention has the following advantages:
the LPG cooling and recycling equipment provided by the invention is convenient to operate, safe and stable, has wide application range, can be used for liquefying and storing gaseous LPG, can also be used for recycling LPG in a waste long pipeline, and can also be used for recycling redundant LPG in a gas supply pipeline.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
fig. 1 is a schematic structural diagram of the invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
An LPG cooling recovery apparatus, as shown in fig. 1, comprises a heat exchange unit and a gas-liquid separation unit; the heat exchange unit comprises a water circulation heat exchanger 1, a circulating water and control assembly and a heat exchange and control assembly; the gas-liquid separation unit comprises a gas-liquid separator 2, and an exhaust and control assembly and a liquid outlet and control assembly are arranged on the gas-liquid separator. The heat exchange pipeline is provided with a high-temperature gaseous LPG inlet 3, the high-temperature gaseous LPG enters the heat exchanger, the circulating water quantity is controlled by the adjusting valve to keep the temperature in the heat exchanger at a lower temperature, the high-temperature gaseous LPG exchanges heat and is condensed and enters the gas-liquid separation unit, and the LPG is stored in the gas-liquid separator.
And when the pressure in the gas-liquid separator is higher than the inlet pressure of the high-temperature gaseous LPG, the air release valve at the top of the gas-liquid separator opens to release air and reduce pressure. When the LPG liquid level stored in the separator reaches a certain height, the stop valve at the LPG liquid outlet pipeline is opened, LPG enters a storage device such as a downstream storage tank, and when the LPG liquid level in the separator is lower, the stop valve on the LPG liquid outlet pipeline is automatically closed. The device is convenient to operate, safe and stable, can cool and recover the gaseous LPG, is convenient to store, and is high in heat exchange efficiency and cost-saving.
The heat exchange and control assembly comprises a heat exchange pipeline, the main body of the heat exchange pipeline is arranged in the water circulation heat exchanger, the upper end and the lower end of the heat exchange pipeline respectively extend out of the water circulation heat exchanger, the high-temperature gaseous LPG inlet end of the heat exchange pipeline is positioned outside the water circulation heat exchanger, the other end of the heat exchange pipeline is connected with the gas-liquid separator, and a recovery control valve assembly and a temperature transmitter 5 are arranged on a recovery pipe 4 connected with the gas-liquid separator;
the circulating water and control assembly comprises a circulating water pipeline arranged on the water circulating heat exchanger, the circulating water pipeline comprises a water inlet pipe 6 and a water outlet pipe 7, a water inlet control valve assembly is arranged on the water inlet pipe, a regulating valve 8 in the water inlet control valve assembly is in signal connection with a temperature transmitter, and the opening degree of the regulating valve is controlled by the temperature transmitter on the recovery pipe so as to control the circulating water quantity in the heat exchanger;
the liquid outlet and control assembly comprises a liquid outlet pipeline 9 and a liquid outlet control valve assembly arranged on the liquid outlet pipeline, a cut-off valve 10 in the liquid outlet control valve assembly is in signal connection with a liquid level meter arranged on the gas-liquid separation, for example, the liquid level meter adopts a magnetic turning plate liquid level meter, and the cut-off valve in the liquid outlet control valve assembly is controlled by the liquid level meter to open and close; the exhaust and control assembly includes an exhaust pipe 11 and an exhaust control valve assembly mounted on the exhaust pipe.
The water inlet control valve assembly further comprises an inlet stop valve 12 arranged on one side, close to the circulating water inlet, of the regulating valve on the water inlet pipe, and an adjusting rear stop valve 13 arranged on one side, far away from the circulating water inlet, of the regulating valve.
In an optional embodiment, a circulating water bypass pipeline 14 is communicated with the inlet stop valve close to the circulating water inlet end and the adjusted stop valve far away from the circulating water inlet end on the water inlet pipe, and a circulating water bypass stop valve 15 is installed on the circulating water bypass pipeline. Generally, the circulating water bypass stop valve adopts a manually controlled stop valve, can be manually operated under emergency conditions, and is safe and reliable.
Preferably, the stop valve can be a pneumatic membrane stop valve, and the regulating valve can be a pneumatic membrane regulating valve. And a circulating water outlet stop valve 16 is arranged on the water outlet pipe. An inlet stop valve 17 is installed at the high-temperature gaseous LPG inlet end of the heat exchange pipeline, an inlet safety valve 18 is installed on one side of the heat exchange pipeline far away from the high-temperature gaseous LPG inlet end, and an inlet safety valve bottom valve 19 is also installed at the inlet safety valve.
The recovery control valve assembly includes a heat exchange outlet cut-off valve 20 and a heat exchange outlet ball valve 21 which are sequentially disposed on the recovery pipe. Generally, the heat exchange outlet shutoff valve is disposed at an incoming water side of the recovery pipe, and the heat exchange outlet ball valve is disposed at an outgoing water side of the recovery pipe.
The liquid outlet control valve assembly further comprises a cut-off rear stop valve 22 arranged on one side, close to the liquid outlet, of the cut-off valve on the liquid outlet pipeline, and a liquid outlet stop valve 23 arranged on one side, far away from the liquid outlet 30, of the cut-off valve. The stop valve is connected with a magnetic turning plate liquid level meter arranged on the gas-liquid separator, when the liquid level reaches a set height, the stop valve is opened, and the LPG enters downstream storage equipment through a liquid outlet pipeline. And a liquid outlet safety valve 31 is arranged on one side of the liquid outlet pipe close to the liquid outlet, and a liquid outlet safety valve bottom valve 32 is arranged at the liquid outlet safety valve.
In an alternative embodiment, a liquid outlet bypass pipeline 24 is communicated with the liquid outlet bypass pipeline between the cut-off stop valve close to the liquid outlet end and the liquid outlet stop valve far away from the liquid outlet end, and a liquid outlet bypass stop valve 25 is installed on the liquid outlet bypass pipeline. Generally, the liquid outlet bypass stop valve adopts a manually controlled stop valve and can be manually operated in an emergency.
The exhaust control valve component comprises an exhaust safety valve 26 and a release valve 27 which are sequentially arranged on the exhaust pipe, a bottom valve 28 of the exhaust safety valve is also arranged at the exhaust safety valve, and a bottom valve 29 of the release valve is also arranged at the release valve. When the pressure in the separator is higher than the pressure of the LPG in the heat exchange unit, the air release valve is opened to reduce the pressure in the gas-liquid separator and ensure that the LPG in the heat exchange unit flows to the gas-liquid separator. The LPG inlet, the separator and the LPG outlet of the recovery device are all provided with safety valves, and when the pressure in the pipeline exceeds the set safety pressure, the valves are opened for safe diffusion.
Before the equipment starts, the safety valve bottom valve, the pressure gauge bottom valve and the air release valve bottom valve are opened, pipelines on the circulating water inlet pipe and the water outlet pipe are connected, then the stop valves on the pipe openings of the circulating water inlet pipe and the water outlet pipe are opened, then the stop valve at the inlet of the heat exchange pipeline is opened, high-temperature gaseous LPG enters the heat exchanger, circulating water quantity is controlled by the adjusting valve to keep the interior of the heat exchanger at a lower temperature, the high-temperature gaseous LPG is subjected to heat exchange and condensation and enters the gas-liquid separation unit, and then the LPG is stored in the gas-liquid separator. And when the pressure in the gas-liquid separator is higher than the inlet pressure of the high-temperature gaseous LPG, the air release valve at the top of the gas-liquid separator opens to release air and reduce pressure. When the stored LPG liquid level in the separator reaches a certain height, the LPG liquid outlet pipeline pneumatic valve is opened, LPG enters the storage devices such as a downstream storage tank and the like, and when the LPG liquid level in the separator is lower, the LPG liquid outlet pipeline pneumatic valve is automatically closed.
The LPG cooling and recycling equipment provided by the invention is convenient to operate, safe and stable, has wide application range, can be used for liquefying and storing gaseous LPG, can also be used for recycling LPG in a waste long pipeline, and can also be used for recycling redundant LPG in a gas supply pipeline.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (9)
1. An LPG cooling recovery device is characterized in that: comprises a heat exchange unit and a gas-liquid separation unit; the heat exchange unit comprises a water circulation heat exchanger, a circulating water and control assembly and a heat exchange and control assembly; the gas-liquid separation unit comprises a gas-liquid separator, and an exhaust and control assembly and a liquid outlet and control assembly are mounted on the gas-liquid separator;
the heat exchange and control assembly comprises a heat exchange pipeline, the main body of the heat exchange pipeline is arranged in the water circulation heat exchanger, the high-temperature gaseous LPG inlet end of the heat exchange pipeline is positioned outside the water circulation heat exchanger, the other end of the heat exchange pipeline is connected with the gas-liquid separator, and a recovery control valve assembly and a temperature transmitter are installed on a recovery pipe connected with the gas-liquid separator;
the circulating water and control assembly comprises a circulating water pipeline arranged on the water circulating heat exchanger, the circulating water pipeline comprises a water inlet pipe and a water outlet pipe, a water inlet control valve assembly is arranged on the water inlet pipe, and a regulating valve in the water inlet control valve assembly is in signal connection with the temperature transmitter;
the liquid outlet and control assembly comprises a liquid outlet pipeline and a liquid outlet control valve assembly arranged on the liquid outlet pipeline, and a stop valve in the liquid outlet control valve assembly is in signal connection with a liquid level meter arranged on the gas-liquid separation; the exhaust and control assembly includes an exhaust pipe and an exhaust control valve assembly mounted on the exhaust pipe.
2. An LPG cooling recovery device according to claim 1, characterized in that: the water inlet control valve component also comprises an inlet stop valve which is arranged on the water inlet pipe and is close to one side of the circulating water inlet of the regulating valve, and an adjusting rear stop valve which is arranged on one side of the circulating water inlet of the regulating valve.
3. An LPG cooling recovery device according to claim 2, characterized in that: on the inlet tube, be close to circulating water inlet end at the import stop valve, keep away from the circulating water inlet end with the regulation back stop valve between the intercommunication have the circulating water bypass pipeline, install circulating water bypass stop valve on circulating water bypass pipeline.
4. An LPG cooling recovery device according to claim 1, characterized in that: and a stop valve for a circulating water outlet is arranged on the water outlet pipe.
5. An LPG cooling recovery device according to claim 1, characterized in that: an inlet stop valve is installed at a high-temperature gaseous LPG inlet end of the heat exchange pipeline, and an inlet safety valve is installed on one side of the heat exchange pipeline, which is far away from the high-temperature gaseous LPG inlet end.
6. An LPG cooling recovery device according to claim 1, characterized in that: the recovery control valve assembly comprises a heat exchange outlet stop valve and a heat exchange outlet ball valve which are sequentially arranged on the recovery pipe.
7. An LPG cooling recovery device according to claim 1, characterized in that: the liquid outlet control valve component further comprises a cut-off rear stop valve which is arranged on the liquid outlet pipeline and is close to one side of the liquid outlet of the cut-off valve, and a liquid outlet stop valve which is arranged on the cut-off valve and is far away from one side of the liquid outlet of the cut-off valve.
8. An LPG cooling recovery device according to claim 7, characterized in that: on the liquid outlet pipeline, a liquid outlet bypass pipeline is communicated with a part, far away from the liquid outlet end, of the stop valve after the stop valve is cut off, and a liquid outlet bypass stop valve is installed on the liquid outlet bypass pipeline.
9. An LPG cooling recovery device according to claim 1, characterized in that: the exhaust control valve component comprises an exhaust safety valve and a release valve which are sequentially arranged on the exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120272753.3U CN214275351U (en) | 2021-02-01 | 2021-02-01 | LPG cooling recovery plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120272753.3U CN214275351U (en) | 2021-02-01 | 2021-02-01 | LPG cooling recovery plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214275351U true CN214275351U (en) | 2021-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120272753.3U Active CN214275351U (en) | 2021-02-01 | 2021-02-01 | LPG cooling recovery plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214275351U (en) |
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2021
- 2021-02-01 CN CN202120272753.3U patent/CN214275351U/en active Active
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