Heating and cooling system based on water jacket heater

Abstract

The utility model provides a heating and cooling system based on a water jacket heater, which comprises a water jacket heater module and at least one water chilling unit module, and both the water jacket heater module and the water chilling unit module are arranged on a skid seat. The two sets of heat exchange systems are integrated in the furnace shell, the water chilling unit module is configured according to needs, skid-mounted modular design is adopted, and the whole body is easy to move and can be repeatedly used. And the natural gas can be heated and cooled. The natural gas heating requirement in the early stage of gas well production can be met, the natural gas cooling requirement in the later stage of gas well production can be met, and production adaptability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas field exploitation, especially relates to a heating and cooling system based on water jacket heating furnace. BACKGROUND

[0002] At present, the ground throttling pressure reduction process is usually used in natural gas exploitation, and the temperature is reduced by 2-5 DEG C for each 1MPa pressure reduction of the pressure system; when the operating temperature is lower than the hydrate formation temperature corresponding to the operating pressure, the natural gas hydrate can be formed in the pipeline, and firmly pasted on the inner wall of the pipeline, and finally the ice blockage is formed in the throttle valve port; the heating equipment such as water jacket heating furnace is generally used to heat the natural gas, so that the operating temperature is higher than the hydrate formation temperature corresponding to the operating pressure by 3-5 DEG C, to prevent the ice blockage from being formed. With the exploitation of gas reservoir, the wellhead flow pressure is attenuated, but the flow temperature fluctuates little or rises, at this time, due to the reduction of throttling pressure difference, the temperature drop is small, and the operating temperature is much higher than the hydrate formation temperature corresponding to the operating pressure, so the heating equipment such as water jacket heating furnace can be stopped. When the operating temperature is required by the downstream device, such as dehydration device, the cooling equipment needs to be set to cool the natural gas, to ensure that the water dew point is qualified, and the energy consumption of the dehydration device is reduced.

[0003] The natural gas is generally cooled by water cooling or air cooling, the water cooling needs to be configured with water pump and cooling tower and other equipment, and the water needs to be treated and cleaned, so that the system is complex and the operation cost is high; the air cooling is greatly affected by seasonal environmental temperature, and the adaptability is not high; in order to solve the natural gas cooling problem of well station, the tube-shell heat exchanger + water chiller unit scheme is usually used, that is, the 7 DEG C cold water generated by the water chiller unit is used to cool the natural gas in the tube side in the tube-shell heat exchanger, and the return water temperature is controlled at 12 DEG C. The following deficiencies exist in this process: 1, two sets of heat exchange systems are set, the equipment is much, the land occupation is large, and the utilization rate of heat exchange equipment is not high; 2, when the natural gas is switched from heating to cooling condition, the operation adaptability is not high, the production capacity is affected. SUMMARY

[0004] The utility model relates to the technical field of gas field exploitation, especially relates to a heating and cooling system based on water jacket heating furnace.

[0005] The utility model discloses a technical scheme that solves the above technical problems: a heating and cooling system based on water jacket heating furnace, comprising: a water jacket heating furnace module and at least one water chiller unit module, the water jacket heating furnace module and the water chiller unit module are installed on the skid.

[0006] The beneficial effect of the technical scheme of the utility model is: two sets of heat exchange systems are integrated in the furnace shell, the water chilling unit module is configured according to needs, the skid-mounted modular design is easy to move as a whole and can be reused. Natural gas can be heated and cooled. The natural gas heating demand in the early stage of gas well production can be met, and the natural gas cooling demand in the later stage of gas well production can be met, and the production adaptability is high.

[0007] Further, the water jacket heating furnace module comprises a natural gas inlet electric cut-off valve, a first natural gas temperature transmitter, a water jacket heating furnace, a water bath temperature transmitter, a first natural gas pressure transmitter, a second natural gas pressure transmitter, a second natural gas temperature transmitter, a natural gas outlet electric cut-off valve, a cold water electric cut-off valve and a backwater electric cut-off valve, and the natural gas inlet electric cut-off valve, the first natural gas temperature transmitter, the water jacket heating furnace, the water bath temperature transmitter, the first natural gas pressure transmitter, the second natural gas pressure transmitter, the second natural gas temperature transmitter, the natural gas outlet electric cut-off valve, the cold water electric cut-off valve and the backwater electric cut-off valve are all installed on the same skid base; the natural gas inlet electric cut-off valve, the water bath temperature transmitter, the natural gas outlet electric cut-off valve, the cold water electric cut-off valve and the backwater electric cut-off valve are all connected with the water jacket heating furnace through pipelines, the first natural gas temperature transmitter is installed on a pipeline between the natural gas inlet electric cut-off valve and the water jacket heating furnace, the first natural gas pressure transmitter, the second natural gas pressure transmitter and the second natural gas temperature transmitter are all installed on a pipeline between the natural gas outlet electric cut-off valve and the water jacket heating furnace, and the cold water electric cut-off valve and the backwater electric cut-off valve are both connected with the water chilling unit module through pipelines.

[0008] The beneficial effect of the above further technical scheme is that the water jacket heating furnace, the throttle valve, the pressure transmitter, the temperature transmitter, the fuel gas flow regulating valve and the self-operated pressure regulating valve are fixed on the same skid base. The heat exchange operation of heating or cooling natural gas is completed in the water jacket heating furnace body. The pressure and temperature remote transmission are arranged at the natural gas pipeline inlet and outlet of the water jacket heating furnace, and are used for switching control of heating or cooling natural gas.

[0009] Further, a throttle valve is arranged on the pipeline between the first natural gas pressure transmitter and the second natural gas pressure transmitter.

[0010] The beneficial effect of the above further technical scheme is that the arrangement of the throttle valve facilitates the regulation of the natural gas flow.

[0011] Further, the water jacket heating furnace is connected with a fuel gas flow regulating valve through a pipeline, and the fuel gas flow regulating valve is connected with a fuel gas self-operated pressure regulating valve through a pipeline.

[0012] The beneficial effects of the further technical scheme are that the gas flow regulating valve is arranged to facilitate the regulation of the gas flow.

[0013] Further, the water jacket heating furnace module and the water chiller module are connected with a PLC.

[0014] The beneficial effects of the further technical scheme are that the water jacket heating furnace module and the water chiller module are jointly controlled by one PLC.

[0015] Further, the water chiller module comprises: a water chiller, a cold water temperature transmitter, a cold water cut-off valve, a return water cut-off valve, a chilled water pump bypass cut-off valve, a return water gate valve, a first chilled water pump, a first return water check valve, a first return water electric gate valve, a first return water gate valve, a second chilled water pump, a second return water check valve, a second return water electric gate valve, a second return water gate valve, a make-up water tank, a first make-up water cut-off valve, a make-up water pump, a make-up water check valve, a make-up water electric cut-off valve, a make-up water pump bypass cut-off valve, a second make-up water cut-off valve, and a pressure transmitter; the water chiller is connected to the cold water cut-off valve, the first chilled water pump and the second chilled water pump through pipelines; the cold water temperature transmitter is installed on a pipeline between the cold water cut-off valve and the water chiller; the cold water cut-off valve and the return water cut-off valve are connected to the water jacket heating furnace module through pipelines; the first chilled water pump and the second chilled water pump are connected to the return water cut-off valve, the make-up water pump and the make-up water tank through pipelines; the chilled water pump bypass cut-off valve, the first chilled water pump and the second chilled water pump are connected to each other in parallel through pipelines; the return water gate valve is installed on a pipeline between the first chilled water pump and the return water cut-off valve; the first return water check valve and the first return water electric gate valve are installed on a pipeline between the first chilled water pump and the water chiller; the first return water gate valve is installed on a pipeline between the second chilled water pump and the return water cut-off valve; the second return water check valve, the second return water electric gate valve and the second return water gate valve are installed on a pipeline between the second chilled water pump and the water chiller; the make-up water tank is connected to the make-up water pump through a pipeline; the first make-up water cut-off valve is located on a pipeline between the make-up water tank and the make-up water pump; the make-up water check valve and the make-up water electric cut-off valve are installed on a pipeline between the make-up water pump and the first chilled water pump; the make-up water pump bypass cut-off valve and the second make-up water cut-off valve are installed on a pipeline between the make-up water tank and the first chilled water pump; and the pressure transmitter is installed on a pipeline between the first chilled water pump and the return water cut-off valve.

[0016] The water chiller module has the beneficial effects of the above further technical solution, which facilitates the realization of the cooling effect and simplifies the structure.

[0017] Further, a first return water T-shaped filter is arranged on a pipeline between the return water gate valve and the first chilled water pump; a second return water T-shaped filter is arranged on a pipeline between the first return water gate valve and the second chilled water pump; a third return water T-shaped filter is arranged on a pipeline between the second return water gate valve and the water chiller; and a make-up water T-shaped filter is arranged on a pipeline between the first make-up water cut-off valve and the make-up water pump.

[0018] The beneficial effect of the further technical scheme is that the filter is arranged to filter the liquid, remove impurities in the liquid, and improve the cleanliness of the liquid.

[0019] Further, a cold water reservation valve is arranged on the pipeline between the cold water cut-off valve and the water jacket heating furnace module, and a return water reservation valve is arranged on the pipeline between the return water cut-off valve and the water jacket heating furnace module; the cold water unit is a wind-cooled cold water unit for explosion-proof natural gas cooling, and the refrigerant in the cold water unit has heating and cooling performance.

[0020] The beneficial effect of the further technical scheme is that the water solution used as the heat exchange medium can meet the temperature requirements of the heating and cooling conditions.

[0021] Further, the cold water unit module is detachably installed on the skid base.

[0022] The beneficial effect of the further technical scheme is that the plug-in skid design is adopted, the cold water unit module is configured as required, the whole is easy to move, and is reusable.

[0023] Further, the skid base comprises a first skid base and at least one second skid base, the water jacket heating furnace module is installed on the first skid base, and the number of the cold water unit modules is multiple, and the multiple cold water unit modules are installed on the second skid base.

[0024] The beneficial effect of the further technical scheme is that the cold water unit module is fixed on the same skid base, or is fixed on two skid bases according to the size of the equipment and the transportation limit.

[0025] The advantages of the additional aspects of the utility model will be partially given in the following description, some will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The structure diagram of the heating and cooling system based on the water jacket heating furnace provided by the utility model embodiment is shown.

[0027] Explanation of reference numerals: 1, natural gas inlet electric cut-off valve; 2, first natural gas temperature transmitter; 3, water jacket heating furnace; 4, water bath temperature transmitter; 5, first natural gas pressure transmitter; 6, throttle valve; 7, second natural gas pressure transmitter; 8, second natural gas temperature transmitter; 9, natural gas outlet electric cut-off valve; 10, gas flow regulating valve; 11, gas self-operated pressure regulating valve; 12, water chiller; 13, cold water temperature transmitter; 14, cold water cut-off valve; 15, cold water electric cut-off valve; 16, return water electric cut-off valve; 17, return water cut-off valve; 18, refrigerated water pump bypass stop valve; 19, return water gate valve; 20, first return water T-shaped filter; 21, first refrigerated water pump; 22, first return water check valve; 23, first return water electric gate valve; 24, first return water gate valve; 25, second return water T-shaped filter; 26, second refrigerated water pump; 27, second return water check valve; 28, second return water electric gate valve; 29, second return water gate valve; 30, third return water T-shaped filter; 31, water supply tank; 32, first water supply stop valve; 33, water supply T-shaped filter; 34, water supply pump; 35, water supply check valve; 36, water supply electric stop valve; 37, water supply pump bypass stop valve; 38, second water supply stop valve; 39, pressure transmitter; 40, PLC; 41, cold water pre-reserve valve; 42, return water pre-reserve valve. DETAILED DESCRIPTION

[0028] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and not used to limit the scope of the utility model.

[0029] The utility model embodiment provides a kind of heating and cooling system based on water jacket heating furnace, comprising: water jacket heating furnace module and at least one water chiller module, the water jacket heating furnace module and the water chiller module are all installed on skid.

[0030] The beneficial effects of the technical scheme of the utility model are: two sets of heat exchange systems are integrated in furnace shell, water chiller module is configured according to need, skid modular design, whole is easy to move, can be reused.Both natural gas heating and natural gas cooling can be realized.Both natural gas heating demand before gas well production and natural gas cooling demand after gas well production can be met, and production adaptability is high.

[0031] The utility model embodiment provides a kind of heating and cooling system based on water jacket heating furnace, system includes water jacket heating furnace module and water chiller module.

[0032] The water jacket heating furnace module comprises a water jacket heating furnace 3, a throttle valve 6, pressure transmitters (a first natural gas pressure transmitter 5 and a second natural gas pressure transmitter 7), temperature transmitters (a first natural gas temperature transmitter 2 and a second natural gas temperature transmitter 8), a fuel gas flow regulating valve (a gas flow regulating valve 10) and a self-operated pressure regulating valve (a gas self-operated pressure regulating valve 11).

[0033] The cold water unit module comprises a cold water unit 12, a pressure transmitter 39, a temperature transmitter (a cold water temperature transmitter 13), chilled water pumps (a first chilled water pump 21 and a second chilled water pump 26), a water supplement pump 34 and a water supplement tank 31.

[0034] Figure 1 In the figure, the dashed box in the upper part is the water jacket heating furnace module, and the dashed box in the lower part is the cold water unit module.

[0035] The utility model discloses a system that can realize natural gas heating and cooling, and the system automatically controls outlet temperature according to set import temperature, import pressure and outlet pressure, integrates two sets of heat exchange systems in a furnace shell, adopts pluggable skid-mounted design, and the cooling module (cold water unit module) is configured according to requirements, and the whole is easy to move and can be reused.

[0036] The heat exchange operation of natural gas heating or cooling is completed in the water jacket heating furnace body.

[0037] The aqueous solution used as the heat exchange medium can meet the temperature requirements of heating and cooling conditions.

[0038] Pressure and temperature remote transmission (which can be wireless transmission equipment) is arranged at the natural gas pipeline import and export of the water jacket heating furnace, and is used for switching control of natural gas heating or cooling.

[0039] The water jacket heating furnace, the throttle valve, the pressure transmitter, the temperature transmitter, the fuel gas flow regulating valve (the gas flow regulating valve 10) and the self-operated pressure regulating valve (the gas self-operated pressure regulating valve 11) are fixed on the same skid.

[0040] The cold water unit 12, the pressure transmitter, the temperature transmitter, the chilled water pump, the water supplement pump and the water supplement tank are fixed on the same skid, or are fixed on two skids according to the size of the equipment and transportation restrictions.

[0041] The water jacket heating furnace module and the cold water unit module are jointly controlled by a PLC 40.

[0042] The control method of the PLC is prior art, and persons skilled in the art can easily think of how to program the PLC according to actual requirements, and details are not described herein.

[0043] As shown in the figure, Figure 1As shown, the water jacket heating furnace module further includes: a natural gas inlet electric shut-off valve 1, a first natural gas temperature transmitter 2, a water jacket heating furnace 3, a water bath temperature transmitter 4, a first natural gas pressure transmitter 5, a second natural gas pressure transmitter 7, a second natural gas temperature transmitter 8, a natural gas outlet electric shut-off valve 9, a cold water electric shut-off valve 15, and a return water electric shut-off valve 16. All valves 16 are mounted on the same skid. The natural gas inlet electric shut-off valve 1, the water bath temperature transmitter 4, the natural gas outlet electric shut-off valve 9, the cold water electric shut-off valve 15, and the return water electric shut-off valve 16 are all connected to the water jacket heater 3 via pipelines. The first natural gas temperature transmitter 2 is installed on the pipeline between the natural gas inlet electric shut-off valve 1 and the water jacket heater 3. The first natural gas pressure transmitter 5, the second natural gas pressure transmitter 7, and the second natural gas temperature transmitter 8 are all installed on the pipeline between the natural gas outlet electric shut-off valve 9 and the water jacket heater 3. The cold water electric shut-off valve 15 and the return water electric shut-off valve 16 are all connected to the chiller unit module via pipelines.

[0044] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the water-jacketed heater, throttle valve, pressure transmitter, temperature transmitter, fuel gas flow regulating valve, and self-regulating pressure regulating valve are fixed on the same skid. The heat exchange operation of natural gas heating or cooling is completed within the water-jacketed heater body. Pressure and temperature remote transmitters are installed at the inlet and outlet of the natural gas pipeline of the water-jacketed heater for switching control of natural gas heating or cooling.

[0045] like Figure 1 As shown, a throttle valve 6 is further provided on the pipeline between the first natural gas pressure transmitter 5 and the second natural gas pressure transmitter 7.

[0046] The beneficial effect of adopting the above-mentioned further technical solution is that the setting of the throttle valve makes it easier to adjust the natural gas flow.

[0047] like Figure 1 As shown, the water jacket heating furnace 3 is further connected to a gas flow regulating valve 10 via a pipeline, and the gas flow regulating valve 10 is connected to a gas self-regulating pressure regulating valve 11 via a pipeline.

[0048] The beneficial effects of the further technical scheme are that the gas flow regulating valve is arranged to facilitate the regulation of the gas flow.

[0049] As shown in Figure 1 Further, the water jacket heating furnace module and the water chiller module are both connected with a PLC 40.

[0050] The beneficial effects of the further technical scheme are that the water jacket heating furnace module and the water chiller module are jointly controlled by one PLC. The one PLC jointly controls, makes logical judgment according to the pressure, temperature parameters and program set values, and automatically switches the heating or cooling program. The natural gas heating or cooling is automatically switched, and the set outlet temperature is achieved.

[0051] The connection relationship between the PLC and each electric element is prior art, and those skilled in the art can easily think of how to connect the PLC with each electric element according to actual needs, which will not be described herein.

[0052] As shown in Figure 1As shown, further, the water chiller module comprises: a water chiller 12, a cold water temperature transmitter 13, a cold water cut-off valve 14, a return water cut-off valve 17, a chilled water pump bypass cut-off valve 18, a return water gate valve 19, a first chilled water pump 21, a first return water check valve 22, a first return water electric gate valve 23, a first return water gate valve 24, a second chilled water pump 26, a second return water check valve 27, a second return water electric gate valve 28, a second return water gate valve 29, a make-up water tank 31, a first make-up water cut-off valve 32, a make-up water pump 34, a make-up water check valve 35, a make-up water electric cut-off valve 36, a make-up water pump bypass cut-off valve 37, a second make-up water cut-off valve 38, a pressure transmitter 39; the water chiller 12 is connected with the cold water cut-off valve 14, the first chilled water pump 21 and the second chilled water pump 26 through pipelines; the cold water temperature transmitter 13 is installed on the pipeline between the cold water cut-off valve 14 and the water chiller 12; the cold water cut-off valve 14 and the return water cut-off valve 17 are both connected with the water jacket heating furnace module through pipelines; the first chilled water pump 21 and the second chilled water pump 26 are both connected with the return water cut-off valve 17, the make-up water pump 34 and the make-up water tank 31 through pipelines; the chilled water pump bypass cut-off valve 18, the first chilled water pump 21 and the second chilled water pump 26 are connected with each other in parallel through pipelines; the return water gate valve 19 is installed on the pipeline between the first chilled water pump 21 and the return water cut-off valve 17; the first return water check valve 22 and the first return water electric gate valve 23 are both installed on the pipeline between the first chilled water pump 21 and the water chiller 12; the first return water gate valve 24 is installed on the pipeline between the second chilled water pump 26 and the return water cut-off valve 17; the second return water check valve 27, the second return water electric gate valve 28 and the second return water gate valve 29 are all installed on the pipeline between the second chilled water pump 26 and the water chiller 12; the make-up water tank 31 is connected with the make-up water pump 34 through a pipeline, and the first make-up water cut-off valve 32 is located on the pipeline between the make-up water tank 31 and the make-up water pump 34; the make-up water check valve 35 and the make-up water electric cut-off valve 36 are both installed on the pipeline between the make-up water pump 34 and the first chilled water pump 21; the make-up water pump bypass cut-off valve 37 and the second make-up water cut-off valve 38 are both installed on the pipeline between the make-up water tank 31 and the first chilled water pump 21; and the pressure transmitter 39 is installed on the pipeline between the first chilled water pump 21 and the return water cut-off valve 17.

[0053] The water chiller module has the beneficial effects of the above further technical solution, and is convenient for realizing the cooling effect and simplifying the structure.

[0054] As Figure 1As shown, further, a first return water T-shaped filter 20 is arranged on the pipeline between the return water gate valve 19 and the first chilled water pump 21; a second return water T-shaped filter 25 is arranged on the pipeline between the first return water gate valve 24 and the second chilled water pump 26; a third return water T-shaped filter 30 is arranged on the pipeline between the second return water gate valve 29 and the water chiller 12; and a water supplement T-shaped filter 33 is arranged on the pipeline between the first water supplement stop valve 32 and the water supplement pump 34.

[0055] The beneficial effect of the further technical scheme is that the filter is arranged to filter the liquid, remove impurities in the liquid, and improve the cleanliness of the liquid.

[0056] As shown, Figure 1 Further, a cold water reservation valve 41 is arranged on the pipeline between the cold water cut-off valve 14 and the water jacket heating furnace module, and a return water reservation valve 42 is arranged on the pipeline between the return water cut-off valve 17 and the water jacket heating furnace module; the water chiller 12 is a wind-cooled water chiller for explosion-proof natural gas cooling, and the refrigerant in the water chiller 12 has heating and cooling performance.

[0057] The beneficial effect of the further technical scheme is that the water solution used as the heat exchange medium can meet the temperature requirements of the heating and cooling conditions. The water chiller is a wind-cooled water chiller for explosion-proof natural gas cooling, and the refrigerant should have both heating and cooling performance and no risk of freezing.

[0058] Further, the water chiller module is detachably installed on the skid.

[0059] The beneficial effect of the further technical scheme is that the plug-in skid design is adopted, the water chiller module is configured as needed, the whole is easy to move, and the water chiller module can be reused. The water chiller module is configured as needed, the operation is flexible, and the adaptability is strong.

[0060] Further, the skid includes a first skid and at least one second skid, the water jacket heating furnace module is installed on the first skid, and the number of the water chiller modules is multiple, and the multiple water chiller modules are installed on the second skid.

[0061] The beneficial effect of the further technical scheme is that the water chiller modules are fixed on the same skid, or are fixed on two skids according to the size of the equipment and the transportation limit. The water chiller module is configured as needed, the operation is flexible, and the adaptability is strong.

[0062] The utility model discloses a heat exchange equipment is used to heat or cool natural gas, has the following beneficial effects: (1) can satisfy the natural gas heating demand of gas well production early stage, can satisfy the natural gas cooling demand of gas well production later period, and production adaptability is high, (2) one PLC unified joint control, according to pressure, temperature parameter and program set value carry out logical judgment (prior art), and automatically switch heating or cooling program (prior art), (3) skid modular design, easy to move, can be used repeatedly, (4) cooling module is configured according to need, and operation is flexible, and adaptability is strong.

[0063] The utility model can be widely applied to natural gas well station or gas gathering dehydration station, and has great market prospect.

[0064] As Figure 1 The utility model provides a heating and cooling system based on water jacket heating furnace, including: natural gas inlet electric cut -out valve 1, first natural gas temperature transmitter 2, water jacket heating furnace 3, water bath temperature transmitter 4, first natural gas pressure transmitter 5, throttle valve 6, second natural gas pressure transmitter 7, second natural gas temperature transmitter 8, natural gas outlet electric cut -out valve 9, gas flow regulating valve 10, gas self -force type pressure regulating valve 11, water chilling unit 12, cold water temperature transmitter 13, cold water cut -out valve 14, cold water electric cut -out valve 15, backwater electric cut -out valve 16, backwater cut -out valve 17, refrigerated water pump bypass stop valve 18, backwater gate valve 19, first backwater T type filter 20, first refrigerated water pump 21 (refrigerated water pump A), first backwater check valve 22, first backwater electric gate valve 23, first backwater gate valve 24, second backwater T type filter 25, second refrigerated water pump 26 (refrigerated water pump B), second backwater check valve 27, second backwater electric gate valve 28, second backwater gate valve 29, third backwater T type filter 30, water supply tank 31, first water supply stop valve 32, water supply T type filter 33, water supply pump 34, water supply check valve 35, water supply electric stop valve 36, water supply pump bypass stop valve 37, second water supply stop valve 38, pressure transmitter 39, PLC 40, cold water reservation valve 41, backwater reservation valve 42.

[0065] Wherein: natural gas inlet electric cut-off valve 1, first natural gas temperature transmitter 2, water jacket heating furnace 3, water bath temperature transmitter 4, first natural gas pressure transmitter 5, throttle valve 6, second natural gas pressure transmitter 7, second natural gas temperature transmitter 8, natural gas outlet electric cut-off valve 9, gas flow regulating valve 10, gas self-operated pressure regulating valve 11, cold water electric cut-off valve 15, return water electric cut-off valve 16, PLC 40 constitute the water jacket heating furnace module. The water jacket heating furnace module completes the natural gas heating and pressure reducing function. The water jacket heating furnace module is integrally integrated on a skid, facilitating construction installation and reuse. The water jacket heating furnace comprises a furnace body, a burner, a fan, an electric ignition burner, a high-energy electronic igniter, an explosion-proof electromagnetic valve group, a flame detector, a fuel gas flame arrester, a fuel gas pipeline and its installation accessories, etc.

[0066] Chiller unit 12, cold water temperature transmitter 13, cold water cut-off valve 14, return water cut-off valve 17, cold water pump bypass cut-off valve 18, return water gate valve 19, first return water T-type filter 20, first cold water pump 21 (cold water pump A), first return water check valve 22, first return water electric gate valve 23, first return water gate valve 24, second return water T-type filter 25, second cold water pump 26 (cold water pump B), second return water check valve 27, second return water electric gate valve 28, second return water gate valve 29, third return water T-type filter 30, water supply tank 31, first water supply cut-off valve 32, water supply T-type filter 33, water supply pump 34, water supply check valve 35, water supply electric cut-off valve 36, water supply pump bypass cut-off valve 37, second water supply cut-off valve 38, pressure transmitter 39 constitute the chiller unit module. The chiller unit module completes the cold water cooling, circulation and water supply functions. The chiller unit module is integrally integrated on a skid, or according to the size of the equipment and the transportation limit, it is fixed on two skid seats, facilitating relocation and reuse. The chiller unit 12 is an explosion-proof natural gas cooling air-cooled chiller unit, and the refrigerant should consider the heating and cooling performance, and there is no risk of freezing.

[0067] The water jacket heating furnace module and the chiller unit module are jointly controlled by the PLC 40, realizing automatic switching of natural gas heating or cooling, and realizing the set outlet temperature.

[0068] In the early stage of gas well production, the water jacket heating furnace module can be installed on site, and the chiller unit module can be installed at the right time, realizing hot plug, and the site can be reserved for the site and foundation. The chiller unit module can select multiple groups according to the heat exchange load.

[0069] Implementation case

[0070] A heating and cooling system based on a water jacket heating furnace is shown in Figure 1 .

[0071] In the early stage of gas well production, the natural gas is in the heating stage, the cold water electric cut-off valve 15 and the backwater electric cut-off valve 16 are closed; the fuel gas pipeline flow regulating valve (fuel gas flow regulating valve 10) and the self-operated pressure regulating valve (fuel gas self-operated pressure regulating valve 11) are opened, the burner of the water jacket heating furnace 3 is started, and the water temperature in the furnace body is heated; the natural gas inlet electric cut-off valve 1, the throttle valve 6 and the natural gas outlet electric cut-off valve 9 are opened; and the natural gas completes the heat exchange and pressure reduction process.

[0072] In the late stage of gas well production, the natural gas is in the cooling stage, the fuel gas pipeline flow regulating valve (fuel gas flow regulating valve 10) and the self-operated pressure regulating valve (fuel gas self-operated pressure regulating valve 11) are closed, and the burner of the water jacket heating furnace 3 is extinguished; the cold water electric cut-off valve 15 and the backwater electric cut-off valve 16 are opened, the cold water unit module is started, and the water temperature in the furnace body is reduced; the natural gas inlet electric cut-off valve 1, the throttle valve 6 and the natural gas outlet electric cut-off valve 9 are opened; and the natural gas completes the heat exchange and pressure reduction process.

[0073] A heating and cooling system based on a water jacket heating furnace is used, in the early stage of production, the natural gas flow is 100×10 4 m 3 / d, the inlet temperature is 45℃, the inlet pressure is 23MPag, the water jacket heating furnace is used to heat the natural gas to 57℃, and the pressure is reduced by throttling to 8MPag to be transported to the downstream dehydration device, at this time, the outlet temperature is 21.7℃ (the dehydration device is designed according to the inlet temperature), the hydrate formation temperature is 18.7℃, and the specification requirements are met; in the late stage of production, the natural gas flow is 100×10 4 m 3 / d, the inlet temperature is 45℃, the inlet pressure is 12MPag, at this time, the temperature after throttling is high, and there is no risk of hydrate formation, but in order to meet the operation requirements of the downstream built dehydration device, the natural gas is cooled to 35.5℃ by using the water jacket furnace, and the pressure is reduced by throttling to 8MPag to be transported to the downstream, at this time, the outlet temperature is 21.7℃, and the specification and production operation requirements are met.

[0074] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A heating and cooling system based on a water jacket heating furnace, characterized by, The utility model relates to a water jacket heating furnace module and at least one cold water unit module, which are both installed on a skid. The water jacket heating furnace module comprises a natural gas inlet electric cut-off valve (1), a first natural gas temperature transmitter (2), a water jacket heating furnace (3), a water bath temperature transmitter (4), a first natural gas pressure transmitter (5), a second natural gas pressure transmitter (7), a second natural gas temperature transmitter (8), a natural gas outlet electric cut-off valve (9), a cold water electric cut-off valve (15), and a return water electric cut-off valve (16), which are all installed on the same skid; the natural gas inlet electric cut-off valve (1), the water bath temperature transmitter (4), the natural gas outlet electric cut-off valve (9), the cold water electric cut-off valve (15), and the return water electric cut-off valve (16) are all connected to the water jacket heating furnace (3) through pipelines; the first natural gas temperature transmitter (2) is installed on a pipeline between the natural gas inlet electric cut-off valve (1) and the water jacket heating furnace (3); the first natural gas pressure transmitter (5), the second natural gas pressure transmitter (7), and the second natural gas temperature transmitter (8) are all installed on a pipeline between the natural gas outlet electric cut-off valve (9) and the water jacket heating furnace (3); the cold water electric cut-off valve (15) and the return water electric cut-off valve (16) are both connected to the cold water unit module through pipelines.

2. A heating and cooling system based on a jacketed heating furnace according to claim 1, characterized in that, A throttling valve (6) is arranged on a pipeline between the first natural gas pressure transmitter (5) and the second natural gas pressure transmitter (7).

3. A heating and cooling system based on a jacketed heating furnace according to claim 2, characterized in that, The water jacket heating furnace (3) is connected to a gas flow regulating valve (10) through a pipeline, and the gas flow regulating valve (10) is connected to a gas self-operated pressure regulating valve (11) through a pipeline.

4. A heating and cooling system based on a jacketed heating furnace according to claim 2, characterized in that, Both the water jacket heating furnace module and the cold water unit module are connected to a PLC (40).

5. A heating and cooling system based on a jacketed heating furnace according to claim 1, characterized in that, ​ 6. A heating and cooling system based on a jacketed heating furnace according to claim 1, characterized in that, The chiller module comprises a chiller (12), a chilled water temperature transmitter (13), a chilled water shut-off valve (14), a return water shut-off valve (17), a chilled water pump bypass stop valve (18), a return water gate valve (19), a first chilled water pump (21), a first return water check valve (22), a first return water motor gate valve (23), a first return water gate valve (24), a second chilled water pump (26), a second return water check valve (27), a second return water motor gate valve (28), a second return water gate valve (29), a make-up water tank (31), a first make-up water stop valve (32), a make-up water pump (34), a make-up water check valve (35), a make-up water motor stop valve (36), a make-up water pump bypass stop valve (37), a second make-up water stop valve (38), and a pressure transmitter (39). The chiller (12) is connected to the chilled water shut-off valve (14), the first chilled water pump (21), and the second chilled water pump (26) through pipelines. The chilled water temperature transmitter (13) is installed on the pipeline between the chilled water shut-off valve (14) and the chiller (12). The chilled water shut-off valve (14) and the return water shut-off valve (17) are connected to the water jacket heater module through pipelines. The first chilled water pump (21) and the second chilled water pump (26) are connected to the return water shut-off valve (17), the make-up water pump (34), and the make-up water tank (31) through pipelines. The chilled water pump bypass stop valve (18), the first chilled water pump (21), and the second chilled water pump (26) are connected to each other in parallel through pipelines. The return water gate valve (19) is installed on the pipeline between the first chilled water pump (21) and the return water shut-off valve (17). The first return water check valve (22) and the first return water motor gate valve (23) are installed on the pipeline between the first chilled water pump (21) and the chiller (12). The first return water gate valve (24) is installed on the pipeline between the second chilled water pump (26) and the return water shut-off valve (17). The second return water check valve (27), the second return water motor gate valve (28), and the second return water gate valve (29) are installed on the pipeline between the second chilled water pump (26) and the chiller (12). The make-up water tank (31) is connected to the make-up water pump (34) through a pipeline. The first make-up water stop valve (32) is located on the pipeline between the make-up water tank (31) and the make-up water pump (34). The make-up water check valve (35) and the make-up water motor stop valve (36) are installed on the pipeline between the make-up water pump (34) and the first chilled water pump (21). The make-up water pump bypass stop valve (37) and the second make-up water stop valve (38) are installed on the pipeline between the make-up water tank (31) and the first chilled water pump (21). The pressure transmitter (39) is installed on the pipeline between the first chilled water pump (21) and the return water shut-off valve (17).

7. A heating and cooling system based on a jacketed heating furnace according to claim 6, characterized in that, A first return water T-shaped filter (20) is arranged on the pipeline between the return water gate valve (19) and the first chilled water pump (21); a second return water T-shaped filter (25) is arranged on the pipeline between the first return water gate valve (24) and the second chilled water pump (26); a third return water T-shaped filter (30) is arranged on the pipeline between the second return water gate valve (29) and the water chiller unit (12); and a water supplement T-shaped filter (33) is arranged on the pipeline between the first water supplement stop valve (32) and the water supplement pump (34).

8. A heating and cooling system based on a jacketed heating furnace according to claim 6, characterized in that, A cold water reservation valve (41) is arranged on the pipeline between the cold water cut-off valve (14) and the water jacket heating furnace module, and a return water reservation valve (42) is arranged on the pipeline between the return water cut-off valve (17) and the water jacket heating furnace module; the water chiller unit (12) is an air-cooled water chiller unit for explosion-proof natural gas cooling, and the refrigerant in the water chiller unit (12) has heating and cooling performance.

9. A heating and cooling system based on a jacketed heating furnace according to claim 1, characterized in that, The water chiller unit module is detachably installed on the skid base.

10. A heating and cooling system based on a jacketed furnace according to claim 1, characterized in that, The skid base comprises a first skid base and at least one second skid base, the water jacket heating furnace module is installed on the first skid base, and the number of the water chiller unit modules is multiple, and the multiple water chiller unit modules are installed on the second skid base.

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