CN208171077U - A kind of NG temperature control device - Google Patents

Abstract

This application provides a kind of NG temperature control devices, including LNG vaporization device and temperature-controlling module, heating medium inlet is provided on the LNG vaporization device, LNG entrance and the outlet NG, the heating medium inlet inflow has heat medium, the temperature-controlling module includes temperature sensor, controller and regulating valve, the temperature sensor is set to the exit NG, the regulating valve is set at the heating medium inlet, the temperature sensor, the regulating valve is electrically connected with the controller respectively, the controller is used to control the regulating valve according to the measured value of the temperature sensor to adjust the influx of the heat medium.The NG temperature control device of the application is capable of the temperature of real-time monitoring NG, and the NG temperature accuracy rate measured is high, and error is small, and NG temperature can control in stable range.

Description

A kind of NG temperature control device

Technical field

This application involves NG technical field more particularly to a kind of NG temperature control devices.

Background technique

In face of global energy crisis, environmental pollution and climatic issues, country advocates energetically and promotes the use of clean energy, substitutes The energy and new energy.Natural gas (Natural Gas, NG) is as a kind of high-quality, efficient and environmentally friendly energy increasingly by blueness It looks at.

Natural gas under room temperature is gas, and storage or long distance transportation are relatively difficult, mined natural gas through desulfurization, Natural gas is cooled to -162 DEG C, is obtained by a series of purified treatments such as dehydration, de- heavy hydrocarbon, de- sour gas using cryogenics Liquefied natural gas (Liquefied Natural Gas, LNG).LNG is colourless, tasteless, nontoxic and non-corrosive, and volume subtracts significantly Few, the weight that volume is about 1/600, LNG of same amount gaseous natural gas volume is only 45% or so of androgynous ponding, and liquefy day Right gas is vaporized into gaseous state just as fuel requirement and can be used.

That there are heating methods is single for existing LNG vaporization mode, and heating device volume is big, and heat exchange efficiency is low and heat energy makes The problem of with being not enough, and to LNG vaporization after, NG is connected on NG storage tank or the network NG and uses, and the temperature of NG is easy Existing excessively high or too low problem, if temperature is excessively high, it will cause the quality reductions of NG supply；It is too low, it will appear vaporization dress Icing is set, the normal use of NG is influenced, NG temperature is controlled particularly significant in a stable range.

Therefore, how to be directed to disadvantage present in the above-mentioned prior art and carry out research and development improvement, actually exerted needed for relevant industry Power research and development target, the application designer in view of this, be think and creation idea, designed then with the experience of many years, pass through In many ways sampling test is inquired into and is studied, and repeatedly amendment improvement, be releasing the application.

Such as application No. is：201410098308.4 Chinese patent disclose a kind of LNG vaporization device and feeder, Including vaporizer and surge tank；Vaporizer includes outer housing, two side seal boards, heat exchange gas-guide tube, water inlet and water outlet, shell Body and two side seal boards surround heat transfer space.This application realizes liquefied natural gas by the way that heat exchange gas-guide tube is arranged in vaporizer Vaporization, but there is no carry out corresponding temperature control to NG for this application.

Utility model content

(1) technical problems to be solved

In view of above-mentioned technical problem, this application provides a kind of structures simply, compact, LNG vaporization is high-efficient, exchanges heat The temperature for the NG that process can carry out automatically, obtain can control the NG temperature control device in stable range.

(2) technical solution

This application provides a kind of NG temperature control device, including LNG vaporization device and temperature-controlling module, the LNG vaporizations Heating medium inlet, LNG entrance and the outlet NG are provided on device, the heating medium inlet inflow has heat medium,

The temperature-controlling module includes temperature sensor, controller and regulating valve, and the temperature sensor is set to institute The exit NG is stated, the regulating valve is set at the heating medium inlet,

The temperature sensor, the regulating valve are electrically connected with the controller respectively, and the controller is used for according to institute The measured value for stating temperature sensor controls the regulating valve to adjust the influx of the heat medium.

In some embodiments of the present application, the temperature sensor be it is multiple, multiple temperature sensors uniformly divide It is distributed in the exit NG.

In some embodiments of the present application, the controller is PLC controller, and the regulating valve is electric control valve.

In some embodiments of the present application, the LNG vaporization device includes pedestal, first support, second support, fluid Working medium pipeline, evaporator, condenser and temperature-controlling module, the first support, the second support are set to the pedestal On, it is respectively used to fix the evaporator and the condenser,

In some embodiments of the present application, the fluid working substance pipeline is connect with the evaporator, the condenser, institute Fluid working substance pipeline is stated for the trandfer fluid working medium between the evaporator and the condenser, the fluid working substance is gas Working medium or liquid working substance,

Circulation has a heat medium in the evaporator, and the evaporator is used for the liquid work through the heat medium Matter is heated to be the gas working medium,

Circulation has LNG in the condenser, and the condenser is used to the gas working medium being condensed into the liquid working substance, Make the LNG vaporization NG.

In some embodiments of the present application, the fluid working substance pipeline includes gas working medium pipeline and liquid working substance pipe Road, the top of evaporator and the top of the condenser described in the gas working medium pipeline connection, the liquid working substance pipeline connect Lead to the bottom of the evaporator and the bottom of the condenser.

In some embodiments of the present application, the condenser includes condenser casing and is set in the condenser casing LNG pipeline, the LNG stream passes through in the LNG pipeline, the gas working medium circulate in the condenser casing with it is described In the space formed outside LNG pipeline.

In some embodiments of the present application, the LNG entrance and the outlet the NG are respectively arranged at outside the condenser The both ends of shell, the LNG entrance and the outlet the NG are connected with the LNG pipeline respectively.

In some embodiments of the present application, the evaporator includes evaporator shell and is set in the evaporator shell Liquid working substance pipeline, the heat medium circulate in the evaporator shell with the sky that is formed outside the liquid working substance pipeline In.

In some embodiments of the present application, the heating medium inlet is set on the evaporator shell, the steaming Crude product input is additionally provided on hair device shell.

In some embodiments of the present application, the fluid working substance is heat pipe phase-change working substance, and the heat medium is water.

(3) beneficial effect

It can be seen from the above technical proposal that the application at least has the advantages that one of them：

(1) NG temperature control device provided by the present application, controller control heat medium according to the measured value of temperature sensor The folding of the regulating valve of inlet setting, adjusts the heat medium amount flowed into evaporator, so that the heat in condenser is adjusted, And then the temperature of NG is adjusted, so that the temperature of NG is controlled in stable range, solves in the prior art that NG temperature can not In real time, accurately adjust and caused by the excessively high and too low problem of LNG temperature；

(2) NG temperature control device provided by the present application, temperature sensor be it is multiple, multiple temperature sensors are uniformly distributed in institute The exit NG is stated, the temperature of real-time monitoring NG is capable of, the average value of multiple temperature sensor measurements is the temperature of NG, the NG measured Temperature accuracy rate is high, and error is small；

(3) NG temperature control device provided by the present application, fluid working substance are heat pipe phase-change working substance, and thermal resistance is small, low in energy consumption, and same The water-ethylene glycol of Unit Weight is easy to compare, and can transmit the heat of several orders of magnitude, LNG vaporization effect is good, vaporization efficency more It is high；

(4) NG temperature control device provided by the present application, the evaporation ends in fluid working substance cyclic process, on fluid working substance pipeline It is smaller with the condensation end temperature difference, be not in LNG heat exchange after temperature decrease the phenomenon that, fluid working substance pipeline safety it is higher and Have the advantages that corrosion-resistant ageing-resistant；

(5) NG temperature control device provided by the present application, fluid working substance under the effect of gravity can automatic cycle so that entire vapour Makeup, which is set, can save the components such as water pump, water tank, valve, reduce conduit volume, reduce pipeline occupied space；

(6) NG temperature control device provided by the present application, structure is simple, compact, compact, easy to operate, reliable operation, peace Overall coefficient is high, and versatile, use scope is wide.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the application NG temperature control device；

Fig. 2 is the top view of Fig. 1.

【The application main element symbol description】

1, pedestal；2, first support；3, second support；4, fluid working substance pipeline；41, gas working medium pipeline；42, liquid work Matter pipeline；5, evaporator；51, heating medium inlet；52, Crude product input；6, condenser；61-LNG entrance；62, NG goes out Mouthful；7, temperature-controlling module；71, temperature sensor；72, regulating valve.

Specific embodiment

This application provides a kind of structures simply, compact, LNG vaporization is high-efficient, heat transfer process can carry out automatically, The temperature of obtained NG can control the NG temperature control device in stable range.

For the purposes, technical schemes and advantages of the application are more clearly understood, below in conjunction with specific embodiment, and reference The application is further described in attached drawing.

Embodiment one

As depicted in figs. 1 and 2, a kind of NG temperature control device, including LNG vaporization device and temperature control are present embodiments provided Component 7 is provided with heating medium inlet 51, LNG entrance 61 and the outlet NG 62, the heat medium on the LNG vaporization device The inflow of entrance 51 has heat medium, and the temperature-controlling module 7 includes temperature sensor 71, controller and regulating valve 72, described Temperature sensor 71 is set at the outlet NG 62, and the regulating valve 72 is set at the heating medium inlet 51, described Temperature sensor 71, the regulating valve 72 are electrically connected with the controller respectively, and the controller is used to be passed according to the temperature The measured value of sensor 71 controls the regulating valve 72 to adjust the influx of the heat medium.The NG temperature control of the present embodiment fills It sets, structure is simple, compact, compact, easy to operate, reliable operation, and safety coefficient is high, and versatile, use scope is wide.

Embodiment two

Present embodiments provide a kind of NG temperature control device, including LNG vaporization device and temperature-controlling module 7, the LNG vapour Makeup, which is set, is provided with heating medium inlet 51, LNG entrance 61 and the outlet NG 62, and the inflow of heating medium inlet 51 has heating Medium,

The LNG vaporization device includes pedestal 1, first support 2, second support 3, fluid working substance pipeline 4, evaporator 5, cold Condenser 6 and temperature-controlling module 7, the first support 2, the second support 3 are set on the pedestal 1, are respectively used to solid The fixed evaporator 5 and the condenser 6,

The condenser 6 includes that condenser casing and the LNG pipeline in condenser casing, the LNG stream pass through institute It states in LNG pipeline, the gas working medium circulates in the space formed outside in the condenser casing with the LNG pipeline.

The fluid working substance is heat pipe phase-change working substance, and thermal resistance is small, low in energy consumption, is held with the water-ethylene glycol of same Unit Weight It easily compares, the heat of several orders of magnitude can be transmitted more, LNG vaporization effect is good, and vaporization efficency is high, and fluid working substance is in gravity Under can automatic cycle, heat transfer process can carry out automatically, and entire vapourizing unit is allowed to save water pump, water tank, valve etc. Component reduces conduit volume, reduces pipeline occupied space.

The evaporator 5 includes evaporator shell and the liquid working substance pipeline in evaporator shell, and the heating is situated between Mass flow passes through in the space formed outside in the evaporator shell with the liquid working substance pipeline.

The LNG entrance 61 and the outlet the NG 62 are respectively arranged at the both ends of the condenser casing, the LNG entrance The outlet the 61 and NG 62 is connected with the LNG pipeline respectively.

The heat medium is water.

The temperature-controlling module 7 include temperature sensor 71, controller and regulating valve 72, the temperature sensor 71, The regulating valve 72 is electrically connected with the controller respectively, and the controller is used for the measured value according to the temperature sensor 71 The influx of the heat medium is controlled by the regulating valve 72, controller is controlled according to the measured value of temperature sensor to be added The folding of the regulating valve of thermal medium inlet setting, adjusts the heat medium amount flowed into evaporator, to adjust in condenser Heat, and then adjust NG temperature, so that the temperature of NG is controlled in stable range.

The temperature sensor 71 is set at the outlet NG 62, and the regulating valve 72 is set to the heat medium and enters At mouth 51, the temperature sensor 71 is two, and two temperature sensors 71 are uniformly distributed at the outlet NG 62, energy The temperature of enough real-time monitoring NG, the average value of the measured value of two temperature sensors 71 are NG temperature, the NG temperature measured Accuracy rate is high, and error is small.

The controller is PLC controller, and the regulating valve 72 is electric control valve.

The fluid working substance pipeline 4 includes gas working medium pipeline 41 and liquid working substance pipeline 42, the gas working medium pipeline The top of the 41 connection evaporators 5 and the top of the condenser 6, the liquid working substance pipeline 42 are connected to the evaporator 5 Bottom and the condenser 6 bottom, evaporation ends and condensation end in fluid working substance cyclic process, on fluid working substance pipeline The phenomenon that temperature difference is smaller, is not in the temperature decrease after LNG heat exchange, fluid working substance pipeline safety is higher and has corrosion resistant Lose ageing-resistant advantage.

The working principle of the application LNG vaporization is：When work, heat medium, the liquid work in liquid working substance pipeline are connected Matter absorbs heat, forms gas working medium, and gas working medium passes through gas working medium Pipe transfer to condenser casing under gas pressure It in the interior space formed outside with LNG pipeline, and exchanging heat with the LNG in LNG pipeline, discharges heat, LNG heat absorption heating simultaneously vaporizes, Gas working medium is condensed into liquid working substance, and liquid working substance passes through liquid working substance pipeline under the effect of gravity and returns to evaporator, opens again Begin circulation.

The working principle of the application NG temperature control is：The temperature of the NG in the exit temperature sensor real-time monitoring NG, and will be warm Degree signal is sent to controller, and controller controls to adjust the folding and size of valve according to the temperature signal received, adjusts evaporation The heat medium amount of device circulation to adjust the heat in condenser, and then adjusts the temperature of NG.

So far, attached drawing is had been combined the present embodiment is described in detail.According to above description, those skilled in the art There should be clear understanding to the application.

It should be noted that in attached drawing or specification text, the implementation for not being painted or describing is affiliated technology Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, the above-mentioned definition to each element and method is simultaneously It is not limited only to various specific structures, shape or the mode mentioned in embodiment.

It should also be noted that, can provide the demonstration of the parameter comprising particular value herein, but these parameters are without definite etc. In corresponding value, but analog value can be similar in acceptable error margin or design constraint.The side mentioned in embodiment It is only the direction with reference to attached drawing to term, such as "upper", "lower", "front", "rear", "left", "right" etc., is not used to limit this The protection scope of application.In addition, unless specifically described or the step of must sequentially occur, the sequences of above-mentioned steps there is no restriction in It is listed above, and can change or rearrange according to required design.And above-described embodiment can be based on design and reliability Consider, the collocation that is mixed with each other is used using or with other embodiments mix and match, i.e., the technical characteristic in different embodiments can be with Freely form more embodiments.

Particular embodiments described above has carried out further in detail the purpose of the application, technical scheme and beneficial effects Describe in detail it is bright, it is all it should be understood that be not intended to limit this application the foregoing is merely the specific embodiment of the application Within spirit herein and principle, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the application Within the scope of shield.

Claims (3)

1. a kind of NG temperature control device, it is characterised in that：Including LNG vaporization device and temperature-controlling module（7）, the LNG vaporization Heating medium inlet is provided on device（51）, LNG entrance（61）It is exported with NG（62）, the heating medium inlet（51）It flows into There is heat medium,

The temperature-controlling module（7）Including temperature sensor（71）, controller and regulating valve（72）, the temperature sensor （71）It is set to the outlet NG（62）Place, the regulating valve（72）It is set to the heating medium inlet（51）Place,

The temperature sensor（71）, the regulating valve（72）It is electrically connected respectively with the controller, the controller is used for root According to the temperature sensor（71）Measured value control the regulating valve（72）To adjust the influx of the heat medium.

2. NG temperature control device according to claim 1, it is characterised in that：The temperature sensor（71）It is multiple to be multiple The temperature sensor（71）It is uniformly distributed in the outlet NG（62）Place.

3. NG temperature control device according to claim 2, it is characterised in that：The controller is PLC controller, the adjusting Valve（72）For electric control valve.