A multifunctional temperature control system

Abstract

The utility model relates to gas production equipment technical field provides a kind of multifunctional temperature control system, including water jacket furnace, water inlet and water outlet are provided on water jacket furnace, first coil pipe is provided in water jacket furnace, further include: storage tank, infusion tube and liquid return pipe are connected on storage tank, infusion tube is communicated with the water inlet of water jacket furnace, liquid return pipe is communicated with the water outlet of water jacket furnace, so that storage tank, infusion tube, water jacket furnace and liquid return pipe are communicated to form circulation loop, circulation pump, first gate valve and cooling device are arranged in circulation loop;Second coil pipe, second coil pipe is connected in water jacket furnace interior, second coil pipe is below first coil pipe, second coil pipe and first coil pipe are mutually parallel, second gate valve is respectively arranged on first coil pipe and second coil pipe.The utility model can overcome the technical problem that the water jacket furnace in the existing natural gas exploitation system lacks cooling capacity, which makes it difficult to control the temperature of natural gas within the range required for external transmission.

Description

Technical Field

[0001] This utility model relates to the field of gas extraction equipment technology, and in particular to a multifunctional temperature control system. Background Technology

[0002] Natural gas extraction is currently in the deep well development stage. Most gas wellhead temperatures can reach 60°C to 80°C. In the early stages, when the gas well pressure is high, temperature can be controlled through wellhead throttling, secondary throttling, and tertiary throttling to ensure that the natural gas temperature meets the requirements for external transmission.

[0003] However, with the rationalization of the gas production process and the reduction of gas well pressure, most gas wells no longer have secondary and tertiary throttling, making it difficult to control the natural gas temperature within the range required for external transmission when the gas well is operating at full capacity. Furthermore, if the well is shut in for too long and needs to be reopened, it is necessary to reheat and maintain the temperature of the natural gas. However, existing natural gas extraction systems generally only have water jacket furnaces for heating natural gas but no cooling capacity. Therefore, there is an urgent need to develop a multi-functional temperature control system that has both cooling and heating capabilities. Utility Model Content

[0004] The purpose of this invention is to overcome the technical problem that the water jacket furnace in the existing natural gas extraction system lacks cooling capacity, making it difficult to control the temperature of natural gas within the range required for external transmission, and to provide a multifunctional temperature control system.

[0005] In a first aspect, this utility model provides a multifunctional temperature control system, including a water jacket furnace, which has an inlet and an outlet, and a first coil inside the water jacket furnace, and further includes: The storage tank is connected to a delivery pipe and a return pipe. The delivery pipe is connected to the inlet of the water jacket furnace, and the return pipe is connected to the outlet of the water jacket furnace, so that the storage tank, delivery pipe, water jacket furnace and return pipe are connected to form a circulation loop. The circulation loop is equipped with a circulation pump, a first gate valve and a cooling device. The second coil is connected inside the water jacket boiler and is located below the first coil. The second coil and the first coil are connected in parallel. The first coil and the second coil are respectively equipped with a second gate valve.

[0006] This solution adds a storage tank, a delivery pipe, a return pipe, and a second coil to the existing water jacket furnace. The storage tank, delivery pipe, return pipe, and water jacket furnace are interconnected to form a circulation loop. The circulation loop is equipped with a circulation pump, a first gate valve, and a cooling device. When the circulation pump, the first gate valve, and the second gate valve of the second coil are closed, the circulation loop is disconnected, and natural gas is introduced into the first coil. Therefore, the cooling device and the second coil will not affect the operation of the water jacket furnace. Ignition of the water jacket furnace allows for heating and insulation of natural gas using the first coil within the furnace, just like in existing technologies.

[0007] When the circulating pump, the first gate valve, and the second gate valve of the second coil are opened, and liquid medium is injected into the storage tank, the circulation loop is connected, and natural gas is introduced into the second coil. The liquid medium can circulate between the storage tank and the water jacket furnace and pass through the cooling device, thereby carrying away the heat of the natural gas through the pipe wall of the second coil. It is then cooled again by the cooling device and reintroduced into the water jacket furnace, thus achieving a continuous cooling of the natural gas in the second coil.

[0008] Furthermore, considering that the density of the cryogenic liquid medium decreases after absorbing heat, causing it to move upwards in the water jacket furnace, resulting in a lower temperature at the bottom and a higher temperature at the top, this solution further places the second coil below the first coil, so that the second coil is in contact with the cryogenic liquid medium rather than with the high-temperature liquid medium, thereby ensuring the cooling effect of this solution on natural gas.

[0009] Preferably, the cooling device includes a flow-limiting orifice plate.

[0010] This solution provides one specific cooling device, which has the advantages of having no moving parts, simple structure, low cost and reliable operation.

[0011] Preferably, the number of flow-limiting orifice plates is at least two, and the flow-limiting orifice plates are distributed at intervals along the length of the return pipe.

[0012] This solution can enhance the cooling effect of the cooling device on the liquid medium in the circulation loop, and also help maintain the stability of the liquid medium's flow state, thereby ensuring the smooth circulation of the liquid medium in the circulation loop.

[0013] Preferably, the inlet is located below the outlet, and the infusion pipe is located below the return pipe.

[0014] When the liquid medium enters the water jacket furnace from the inlet, its initial temperature is low, so it will remain at the bottom of the water jacket furnace and exchange heat with the second coil located at the bottom, which will cause its temperature to rise and its density to decrease, thus causing the liquid medium to move towards the top of the water jacket furnace; therefore, the natural direction of liquid medium flow in the water jacket furnace is from bottom to top.

[0015] When the liquid medium absorbs heat from the second coil and returns to the storage tank through the return pipe, its initial temperature is relatively high, so it remains at the top of the storage tank. As it exchanges heat with other liquid media in the storage tank that are at a lower temperature because they did not absorb heat from the second coil, the temperature of this part of the liquid medium will drop again, causing its density to increase, which in turn causes the liquid medium to move towards the bottom of the tank. Therefore, the natural direction of liquid medium flow in the tank is from top to bottom.

[0016] For the reasons mentioned above, this design places the inlet of the water jacket furnace below the outlet, and the liquid delivery pipe of the storage tank below the return pipe, so that the circulation direction of the circulation loop follows the natural flow direction of the liquid medium, which helps to make the operation of the circulation loop smoother.

[0017] Preferably, both the infusion tube and the return tube are equipped with a circulation pump.

[0018] This solution helps maintain the pressure and flow rate of the liquid medium in the infusion and return pipes, preventing the liquid medium from failing to complete the circulation loop due to pressure and flow rate loss.

[0019] Preferably, the power of the circulating pump is adjustable.

[0020] Since the cooling effect of the circulation loop on natural gas is related to fluid parameters such as the flow rate, flow rate, and pressure of the liquid medium in the circulation loop, and these fluid parameters are related to the power of the circulation pump, this scheme selects to use a circulation pump with adjustable power. This is beneficial to flexibly adjust the cooling range according to the actual temperature of the natural gas in actual production, so that the temperature of the natural gas after cooling meets the requirements for external transmission.

[0021] Preferably, a first gate valve is provided on both sides of the circulating pump along the circulation direction of the circulation loop.

[0022] This solution allows staff to easily disconnect the circulation loop from both sides of the circulation pump when a problem occurs, enabling them to remove the pump for maintenance or repair and preventing leakage of liquid media from the disconnection point.

[0023] Preferably, a check valve is also provided in the circulation loop.

[0024] This solution can prevent the liquid medium from flowing back and erratically due to circulation pump failure.

[0025] Preferably, both the infusion tube and the return tube are equipped with check valves.

[0026] This solution can prevent hot water from flowing back into the water jacket boiler or cold water from flowing back into the storage tank.

[0027] Preferably, the circulation loop is further provided with at least one of a flow meter, a pressure gauge, a level gauge, and a thermometer.

[0028] This solution allows staff to monitor information such as flow rate, pressure, liquid level, and temperature in the circulation loop in real time, providing data support for subsequent work, such as adjusting the operation of the circulation loop according to the actual temperature of the natural gas, or shutting down the machine in case of abnormality in the circulation loop.

[0029] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a multi-functional temperature control system. Based on the existing water jacket furnace, a storage tank, a delivery pipe, a return pipe, and a second coil are added. By switching the on / off state of the circulation pump, the first gate valve, and the second gate valve of the second coil, the system can switch between heating and heat preservation mode and cooling mode. This makes it suitable for both situations where heating and heat preservation of natural gas is required when reopening a well and situations where the gas well temperature is too high and cooling is required, thus achieving multiple uses in one machine. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the first pipeline connection of a multifunctional temperature control system according to this utility model; Figure 2 This is a schematic diagram of the second pipeline connection of a multifunctional temperature control system according to this utility model; Figure 3 This is a schematic diagram of the working state of a multifunctional temperature control system of this utility model in cooling mode; Figure 4 This is a schematic diagram of the working state of a multifunctional temperature control system of this utility model in heating and heat preservation mode; icon: 1-Water jacket boiler; 11-First coil; 12-Second coil; 2-Storage tank; 3-Infusion pipe; 4-Return pipe; 5-Circulating pump; 6-First gate valve; 7-Second gate valve; 8-Flow limiting orifice plate; 9-Check valve; 101-Flow meter; 102-Pressure gauge; 103-Level gauge; 104-Thermometer. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0032] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0034] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0035] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0036] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0037] Example 1 like Figures 1 to 4As shown, a multifunctional temperature control system includes a water jacket furnace 1 and a storage tank 2. The water jacket furnace 1 is equipped with an inlet and an outlet, and a first coil 11 and a second coil 12 are installed inside the water jacket furnace 1. The storage tank 2 is used to contain liquid media, such as water or coolant. A liquid delivery pipe 3 and a liquid return pipe 4 are connected to the storage tank 2. The liquid delivery pipe 3 is connected to the inlet of the water jacket furnace 1, and the liquid return pipe 4 is connected to the outlet of the water jacket furnace 1, so that the storage tank 2, the liquid delivery pipe 3, the water jacket furnace 1, and the liquid return pipe 4 are connected to form a circulation loop. A circulation pump 5, a first gate valve 6, and a cooling device are installed in the circulation loop. The second coil 12... Pipe 12 is located below the first coil 11 and is positioned near the bottom of the furnace of the water jacket boiler 1. That is, the first coil 11 is a high-level coil and the second coil 12 is a low-level coil. The second coil 12 is connected in parallel with the first coil 11. The first coil 11 and the second coil 12 are respectively equipped with a second gate valve 7. Opening the second gate valve 7 of the first coil 11 and closing the second gate valve 7 of the second coil 12 allows natural gas to pass through only the first coil 11. Closing the second gate valve 7 of the first coil 11 and opening the second gate valve 7 of the second coil 12 allows natural gas to pass through only the second coil 12.

[0038] The multi-functional temperature control system of this embodiment can switch its operating mode by switching the on / off states of the circulating pump 5, the first gate valve 6, and the second gate valve 7; for example, when the circulating pump 5, the first gate valve 6, and the second gate valve 7 on the second coil 12 are open, while the second gate valve 7 on the first coil 11 is closed, the multi-functional temperature control system of this embodiment is in cooling mode. Figure 3 As shown, natural gas only enters and exits the second coil 12, while the low-temperature liquid medium starts from the storage tank 2, enters the water jacket furnace 1 through the liquid delivery pipe 3, and becomes a high-temperature liquid medium after exchanging heat with the second coil 12. Due to the decrease in density, it continues to rise and then returns to the storage tank 2 through the return pipe 4.

[0039] When the circulating pump 5, the first gate valve 6, and the second gate valve 7 on the second coil 12 are closed, and the second gate valve 7 on the first coil 11 is open, the multi-functional temperature control system of this embodiment is in heating and heat preservation mode. Figure 4 As shown, natural gas only enters and exits the first coil 11, and the circulation loop is cut off. The function of the water jacket furnace 1 is the same as that of the existing ordinary water jacket furnace 1. The natural gas in the first coil 11 can be heated by igniting the water jacket furnace 1.

[0040] In the above embodiments, the number and position of the circulating pump 5, the first gate valve 6, and the cooling device are determined according to actual needs, as long as they can drive the liquid medium to flow in the circulation loop, cut off or connect the liquid medium in the circulation loop and the cooling circulation loop respectively; and the circulating pump 5 and the cooling device can be existing products. The specific type of the circulating pump 5 includes, but is not limited to, centrifugal pump, axial flow pump or submersible pump 5; the specific type of the cooling device includes, but is not limited to, refrigeration compressor system, evaporative cooling device or condenser.

[0041] In an optional embodiment, the cooling device includes a flow-limiting orifice plate 8, which can be a readily available product.

[0042] In the above embodiments, the number of flow-limiting orifice plates 8 is at least two, and the flow-limiting orifice plates 8 are spaced apart along the length of the return pipe 4. For example Figure 1 As shown, three flow-limiting orifice plates 8 are connected in series inside the return pipe 4.

[0043] In an optional embodiment, the inlet is located below the outlet, and the infusion pipe 3 is located below the return pipe 4; for example... Figure 1 As shown, the water inlet is located at the bottom of the water jacket furnace 1, the water outlet is located at the top of the water jacket furnace 1, the liquid delivery pipe 3 is connected to the bottom of the storage tank 2, and the liquid return pipe 4 is connected to the top of the storage tank 2.

[0044] In optional implementations, such as Figure 1 As shown, both the infusion pipe 3 and the return pipe 4 are equipped with circulation pumps 5. The circulation pump 5 at the infusion pipe 3 is located near the storage tank 2, and the circulation pump 5 at the return pipe 4 is located near the water jacket furnace 1.

[0045] In an optional embodiment, the power of the circulating pump 5 is adjustable, thereby enabling flexible adjustment of the flow rate of the liquid medium in the circulating loop.

[0046] In an optional embodiment, the circulating pump 5 is provided with a first gate valve 6 on both sides along the circulation direction of the circulation loop, for example... Figure 1 As shown, a first gate valve 6 is provided on both sides of the two circulating pumps 5. When it is necessary to remove the circulating pump 5, the first gate valve 6 on both sides of the circulating pump 5 is closed first to avoid leakage of liquid medium after the circulating pump 5 is removed.

[0047] In an optional implementation, a check valve 9 is also provided in the circulation loop. For example... Figure 1 As shown, check valves 9 are installed behind each of the two circulating pumps 5 in the direction of liquid medium flow in the circulation loop.

[0048] In an optional embodiment, both the infusion tube 3 and the return tube 4 are equipped with check valves 9.

[0049] In an optional embodiment, the circulation loop is further provided with at least one of a flow meter 101, a pressure gauge 102, a level gauge 103, and a thermometer 104. For example... Figure 2As shown, a pressure gauge 102, a level gauge 103, and a thermometer 104 are installed at the storage tank 2; a level gauge 103 and a thermometer 104 are installed at the water jacket furnace 1; a pressure gauge 102 and a flow meter 101 are installed in the liquid delivery pipe 3, and the pressure gauge 102 and the flow meter 101 are sequentially installed behind the circulating pump 5 along the direction of liquid medium flow in the circulation loop; a pressure gauge 102 and a flow meter 101 are also installed in the return pipe 4, and the pressure gauge 102 and the flow meter 101 are sequentially installed behind the circulating pump 5 along the direction of liquid medium flow in the circulation loop.

[0050] The above content is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multifunctional temperature control system, comprising a water jacket furnace (1), wherein the water jacket furnace (1) is provided with a water inlet and a water outlet, and a first coil (11) is provided inside the water jacket furnace (1), characterized in that, Also includes: The storage tank (2) is connected to a liquid delivery pipe (3) and a liquid return pipe (4). The liquid delivery pipe (3) is connected to the inlet of the water jacket furnace (1), and the liquid return pipe (4) is connected to the outlet of the water jacket furnace (1), so that the storage tank (2), the liquid delivery pipe (3), the water jacket furnace (1) and the liquid return pipe (4) are connected to form a circulation loop. The circulation loop is equipped with a circulation pump (5), a first gate valve (6) and a cooling device. The second coil (12) is connected inside the water jacket furnace (1). The second coil (12) is located below the first coil (11). The second coil (12) and the first coil (11) are connected in parallel. The first coil (11) and the second coil (12) are respectively provided with a second gate valve (7).

2. The multifunctional temperature control system according to claim 1, characterized in that, The cooling device includes a flow-limiting orifice plate (8).

3. The multifunctional temperature control system according to claim 2, characterized in that, The number of flow-limiting orifice plates (8) is at least two, and the flow-limiting orifice plates (8) are distributed at intervals along the length direction of the return pipe (4).

4. The multifunctional temperature control system according to claim 1, characterized in that, The inlet is located below the outlet, and the infusion pipe (3) is located below the return pipe (4).

5. A multifunctional temperature control system according to any one of claims 1 to 4, characterized in that, Both the infusion pipe (3) and the return pipe (4) are equipped with circulation pumps (5).

6. A multifunctional temperature control system according to any one of claims 1 to 4, characterized in that, The power of the circulating pump (5) is adjustable.

7. A multifunctional temperature control system according to any one of claims 1 to 4, characterized in that, The circulating pump (5) is equipped with the first gate valve (6) on both sides along the circulation direction of the circulation loop.

8. A multifunctional temperature control system according to any one of claims 1 to 4, characterized in that, The circulation loop is also equipped with a check valve (9).

9. A multifunctional temperature control system according to claim 8, characterized in that, The infusion tube (3) and the return tube (4) are both equipped with the check valve (9).

10. A multifunctional temperature control system according to any one of claims 1 to 4, characterized in that, The circulation loop is also equipped with at least one of a flow meter (101), a pressure gauge (102), a level gauge (103), and a thermometer (104).

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