CN220102871U - Steam transmission system - Google Patents

Abstract

The utility model provides a steam transmission system, which comprises steam inlet, steam exhaust, a drainage pipeline, a steam quality detector, steam exhaust, an electric heating device, a drain valve, a steam-liquid separator and control equipment, wherein the steam quality detector detects the dryness of steam; the output end of the steam inlet pipe is connected with the steam inlet of the steam-liquid separator, the input end of the steam exhaust pipe is connected with the steam exhaust port of the steam-liquid separator, and the liquid outlet of the steam-liquid separator is connected with the input end of the drain pipe; the steam exhaust pipe comprises a first section, a second section and a third section, the second section is positioned between the first section and the third section, the input end and the output end of the steam exhaust pipe are positioned in the first section and the third section, the first section is provided with a first branch pipeline, the steam exhaust device is connected with the output end of the first branch pipeline, and the electric heating device is positioned in the second section, and the steam quality detector is connected with the third section sampling port and is respectively and electrically connected with the control equipment; the drain valve is positioned on the drain pipe. The scheme provided by the embodiment of the utility model can solve the problem that the steam quality does not reach the standard in the prior art.

Description

Steam transmission system

Technical Field

The utility model relates to the technical field of steam production, in particular to a steam transmission system.

Background

Steam is used as a heat source of various heat energy devices, the quality of the steam has a great influence on the operation effect of the devices, and part of industries have high requirements on the quality of the used steam and have great demands on the quality monitoring of the steam. The steam quality mainly comprises parameters such as superheat degree, dryness, non-condensable gas content and the like. Steam quality is not up to standard and can have adverse effects on its production operation, even with serious consequences. In the prior art, the existing equipment is high in price, large in size and inconvenient to use. And most of the defects in principle and design cannot truly achieve the purpose of monitoring.

Disclosure of Invention

The embodiment of the utility model aims to provide a steam transmission system which can solve the problem that the quality of steam does not reach the standard in the prior art.

In order to solve the technical problems, the utility model is realized as follows:

the embodiment of the utility model provides a steam transmission system, which comprises: the steam quality detector is used for detecting a sensor of steam dryness;

the output end of the steam inlet pipeline is connected with the steam inlet of the steam-liquid separator, the input port of the steam exhaust pipeline is connected with the steam exhaust port of the steam-liquid separator, and the liquid outlet of the steam-liquid separator is connected with the input end of the water exhaust pipeline;

the steam exhaust pipeline comprises a first section, a second section and a third section, the second section is positioned between the first section and the third section, the input end of the steam exhaust pipeline is positioned in the first section, the output end of the steam exhaust pipeline is positioned in the third section, the first section is provided with a first branch pipeline, the steam exhaust device is connected with the output end of the first branch pipeline, the electric heating device is arranged in the second section, the third section is provided with a sampling port, and the steam quality detector is connected with the sampling port through a pipeline; the drain valve is arranged on the drain pipeline.

In the embodiment of the utility model, steam-water separation treatment and non-condensable gas separation treatment are carried out on steam, then the steam is subjected to heating treatment according to requirements through the electric heating pipe section, and finally the steam is detected after the steam is treated, so that a better effect is achieved.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments of the present utility model will be briefly described below.

FIG. 1 is a schematic diagram of a vapor delivery system provided by the present disclosure;

fig. 2 is a vapor pressure-temperature table for a vapor delivery system provided by the present disclosure.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more.

An embodiment of the present utility model provides a vapor transmission system, please refer to fig. 1, which is a vapor transmission system provided in an embodiment of the present utility model, including:

the steam quality detector 10 is used for detecting a sensor of steam dryness;

the output end of the steam inlet pipeline B is connected with the steam inlet of the steam-liquid separator 20, the input port of the steam exhaust pipeline A is connected with the steam exhaust port of the steam-liquid separator 20, and the liquid outlet of the steam-liquid separator 20 is connected with the input end of the water exhaust pipeline C;

the steam exhaust pipeline C comprises a first section, a second section and a third section, the second section is located between the first section and the third section, the input end of the steam exhaust pipeline C is located in the first section, the output end of the steam exhaust pipeline C is located in the third section, the first section is provided with a first branch pipeline, the steam exhaust device is connected with the output end of the first branch pipeline, the electric heating device 30 is arranged in the second section, the third section is provided with a sampling port, and the steam quality detector 10 is connected with the sampling port through a pipeline; the drain valve 60 is disposed on the drain line.

Referring to fig. 1, the first section is between the steam exhaust device and the steam exhaust port of the steam-liquid separator 20, the first section is between the steam exhaust port connection section of the steam exhaust device and the steam-liquid separator 20 and the section input to the steam quality detector 10, the third section is the section input to the steam quality detector 10, the first branch pipeline is the branch pipeline from the first section to the steam exhaust device, the source of the steam inlet pipeline B can be the outsourced steam required by factory production or the boiler steam production, and enters the steam-liquid separator 20, the first separation of the steam-liquid separator 20 is the different separation of water and steam density, the second separation is the inversion by changing the flow direction through the baffle plate 100, so as to be forced to settle and separate, the third separation is the adsorption and separation of the vapor particles which are not separated through the filler layer 90, the generated noncondensable gas is discharged from the steam exhaust port of the steam-liquid separator 20 to the steam exhaust device, the noncondensable gas is discharged through the steam exhaust device, and simultaneously, the steam flows into the electric heating device 30, and then flows into the steam quality detector 10, and the air quality detector is controlled by the electric heating device, and the sterilizing device is controlled by the sterilizing device, namely the sterilizing device is sterilized by the sterilizing device, and the sterilizing device is high in the air, and the sterilizing device is sterilized, and the sterilizing device is passed, and the sterilizing device is sterilized, and the sterilizing device is passed, and the sterilizing device is heated. The water is discharged from the liquid outlet of the vapor-liquid separator 20, continuously works through the lever and buoyancy principle of the drain valve 60, and intermittently discharges water.

In the embodiment, the steam is subjected to steam-water separation principle treatment, namely the high-efficiency steam-water separator adopts a plurality of condensate water capturing principles, so that water flow at the bottom of a pipeline can be discharged at different steam flow rates, an annular condensate water film in the steam pipeline is destroyed, condensate water is collected, and small liquid drops suspended in the steam flow are effectively captured. To ensure the actual separation effect. The noncondensable gas is separated and treated, then the noncondensable gas is subjected to heating treatment according to requirements through an electric heating pipe section, finally, the steam is treated and then detected, the detected qualified steam is discharged to a downstream user, the detected unqualified steam is returned to an electric heating device, the internal medium is heated through the electric heating device until the detected unqualified steam flows into the downstream user, the steam can be well utilized, the heat efficiency of the high-efficiency treated dry saturated steam is close to 100%, and the steam is saved by more than 5%.

Optionally, the steam exhaust device comprises an exhaust valve and a vacuum breaking valve, and the input end of the exhaust valve is connected with the output end of the first branch pipeline; the exhaust valve is internally provided with a thermal static cavity, a steam outlet is formed in the cavity wall of the thermal static cavity, and the vacuum breaking valve is arranged in the steam outlet.

Referring to fig. 1, the steam exhaust device includes an exhaust valve 40 and a vacuum breaking valve 80, an input end of the exhaust valve 40 is connected with an output end of the first branch pipeline, a thermal static cavity is arranged in the exhaust valve 40, a steam outlet is formed in a cavity wall of the thermal static cavity, and the vacuum breaking valve 80 is arranged in the steam outlet.

In this embodiment, in the non-condensable gas storage thermal static cavity, the non-condensable gas is discharged by utilizing the principle of thermal expansion of gas in the exhaust valve 40 to remove air in the tank, and meanwhile, when the system generates negative pressure by utilizing the working principle of the vacuum breaking valve 80, the vacuum breaking valve sealing member is pushed by the pressure difference between the atmospheric pressure and the system pressure to open the sealing surface to introduce the external atmosphere into the system, so that the system pressure is increased to break the negative pressure until the vacuum breaking valve sealing member drops down again to seal, and the external atmosphere does not enter the system any more. When the system is positive pressure, working medium enters the upper part of the sealing element, the sealing element is pressed downwards, the system pressure is higher, the sealing is tighter, the situation that the vacuum breaking valve is not leaked when the system is positive pressure is ensured, and the working medium can be better used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like through the principles of the exhaust valve 40 and the vacuum breaking valve 80. So that the pipelines and other devices are not shrunken, cracked and the like, thereby protecting the safety of the devices.

Optionally, the vapor-liquid separator comprises a tank body and a vapor-liquid separation component, the vapor-liquid separation component is arranged in the tank body, the tank body is provided with a vapor inlet, and the vapor inlet is arranged between the vapor-liquid separation component and the liquid outlet.

Referring to fig. 1, steam particles, i.e., water in a gaseous state, are settled to the bottom according to the principle that the densities of steam and water are different by entering the high-efficiency steam-water separator through the steam; in order to separate the water vapor particles, the flow direction of the water vapor particles is changed through a baffle plate again to reverse, so that the water vapor particles are forced to settle and separate, and finally, the water vapor particles which are not separated out are separated through adsorption through a packing layer, so that the aim of high-efficiency separation is achieved. The vapor-liquid separator 20 includes a tank body and a vapor-liquid separation member, the vapor-liquid separation member is disposed in the tank body, a vapor inlet is formed on the tank body, the vapor inlet is an opening for inflow of vapor, and the vapor inlet is disposed between the vapor-liquid separation member and the liquid outlet.

In this embodiment, the vapor-liquid separator 20 is provided to separate the non-condensable gas and water, the gas flows out from the upper end, and the water flows out from the lower end, so that the liquid entrained in the gas can be further condensed and discharged better, and the effect of removing the liquid can be achieved.

Optionally, the vapor-liquid separation component comprises a baffle plate, and the baffle plate is connected with the inner wall of the tank body so as to divide the tank body into two cavities.

Referring to fig. 1, the vapor-liquid separator 20 includes a vapor-liquid separation member including a baffle plate 100, and the baffle plate 100 is connected to an inner wall of the tank to divide the tank into two chambers.

In this embodiment, the vapor-liquid separator 20 includes a vapor-liquid separation part, the vapor-liquid separation part further includes a baffle plate 100, the baffle plate 100 is provided, by utilizing the principle of the baffle plate, when the gas and the liquid are mixed together and flow, if the gas encounters a blockage, the gas is baffled and goes away, and the liquid continues to have a forward speed due to inertia, and the forward liquid is adhered to the blocking wall surface and is collected downwards due to the action of gravity and discharged through the discharge pipe, so that better separation can be achieved.

Optionally, the vapor-liquid separation component further comprises a packing layer, wherein the packing layer is connected with the baffle plate, and the packing layer is positioned on one side of the baffle plate, which faces the vapor discharge port.

Referring to fig. 1, the vapor-liquid separator 20 includes a vapor-liquid separation component, and the vapor-liquid separation component further includes a packing layer 90, where the packing layer 90 is connected to a baffle 100, and passes through the baffle 100 and then passes through the packing layer 90.

In this embodiment, by providing the packing layer 90, the principle of packing separation is utilized, and because of the different densities of the gas and the liquid, when the liquid and the gas are mixed together, if the gas encounters a barrier, the gas is baffled away, and the liquid continues to have a forward velocity due to inertia, and the forward liquid adheres to the surface of the barrier packing and is collected downwards due to the action of gravity and is discharged through the discharge pipe. Compared with the common baffling classification, the packing has larger blocking wall area, and the liquid is easier to adhere to the wall and has higher separation efficiency due to repeated baffling for a plurality of times.

Optionally, the vapor transmission system includes a stop valve, the stop valve includes a first stop valve, a second stop valve, and a third stop valve, the first stop valve is disposed on the first branch pipeline and is located between the vapor exhaust device and an output end of the first branch pipeline.

Referring to fig. 1, the vapor transmission system includes a stop valve 50, where the stop valve 50 includes a first stop valve 50, a second stop valve 50, and a third stop valve 50, and the first stop valve 50 is disposed on the first branch pipeline and between the exhaust valve 40 and the vacuum breaking valve 80 and the output end of the first branch pipeline.

In this embodiment, the first shut-off valve 50 is provided to shut off, regulate or throttle the flow, and is adapted to be installed on the pipe to regulate the flow.

Optionally, a second stop valve is disposed in the drain pipeline, and the second stop valve is disposed between the drain output end of the vapor-liquid separator and the input end of the drain valve.

Referring to fig. 1, a second stop valve is disposed in the drain line C, and a second stop valve 50 is disposed between the drain output of the vapor-liquid separator 20 and the input of the drain valve 60.

In this embodiment, the second shut-off valve 50 is provided to shut off, regulate or throttle the flow, and is adapted to be installed on the pipe to regulate the flow.

Optionally, a third stop valve is disposed in the drain line, and the third stop valve is disposed between the drain output of the drain valve and the output of the drain line.

Referring to fig. 1, a third stop valve 50 is disposed in the drain line C, and the third stop valve 50 is disposed between the drain output end of the drain valve 60 and the output end of the drain line C.

In this embodiment, the third shut-off valve 50 is provided to shut off, regulate or throttle the flow, and is adapted to be installed on the pipe to regulate the flow. And meanwhile, the second stop valve 50 and the third stop valve 50 are arranged to facilitate maintenance of the drain valve 60.

Alternatively, the trap is an inverted trap.

Referring to fig. 1, the drain valve 60 is an inverted drain valve, the drain valve 60 is disposed between the third stop valve 50 and the third stop valve 50, the drain valve 60 is disposed on the drain pipeline C, the drain valve 60 includes an inverted bucket, a valve hole and a valve flap, a long rod is disposed at the top of the inverted bucket, a small round hole is disposed at the top of the inverted bucket and is adjacent to the long rod, the inverted bucket is disposed inside the drain valve 60, a round valve hole is disposed at the top of the drain valve 60, the valve flap is disposed on the round valve hole at the top of the drain valve 60, and the bottom of the valve flap is connected with the top of the inverted bucket through the long rod.

In this embodiment, the mechanical drain valve is operated by the principle of lever and buoyancy according to the difference between the steam and water densities. Steam enters the inverted barrel to enable the barrel to float, and the valve hole is closed. The condensed water enters the drain valve to change the buoyancy of the barrel, so that the barrel sinks, the drain valve hole is opened, and the condensed water is discharged. Unlike other mechanical drain valves, when the device is just started, air and low-temperature condensed water in the pipeline enter the drain valve, the inverted bucket falls down by the self weight, the inverted bucket is connected with the long rod to drive the valve clack to open, and the air and the low-temperature condensed water are rapidly discharged. When steam enters the reverse bucket, the steam of the reverse bucket generates upward buoyancy, and the reverse bucket ascends to be connected with the long rod to drive the lower valve clack to be closed. The reverse bucket is provided with a small hole, when one part of steam is discharged from the small hole and the other part of steam generates condensed water, the reverse bucket loses buoyancy and sinks downwards by self weight, and the reverse bucket is connected with a long rod to drive the valve clack to open, and the reverse bucket works circularly and intermittently discharges water. The inverted bucket type drain valve can resist high pressure and water hammer. After the inlet and the check valve are additionally arranged, the device can be used for a superheated steam system. Optionally, the control device is configured to:

when the sensor detects that the dryness value of the steam is lower than a first threshold value, a first control signal is sent to the electric heating device, and the first control signal is used for controlling the electric heating device to be started;

and when the sensor detects that the dryness value of the steam is higher than a second threshold value, sending a second control signal to the electric heating device, wherein the second control signal is used for controlling the electric heating device to be turned off, and the first threshold value is smaller than the second threshold value.

Referring to fig. 2, the first threshold and the second threshold refer to critical values, which refer to a minimum value and a maximum value generated by an effect, the first control signal and the second control signal are electric signals, whether to turn on or off the operation of the device, the control device 70 is an electric heating control box, and is electrically connected to the steam quality detector 10 and the electric heating device 30, and the steam quality detector 10 is configured to:

if the sensor detects that the dryness value of the steam is lower than a first threshold value, a first control signal is sent to the electric heating device 30, and the first control signal is used for controlling the electric heating device 30 to be started;

in case the sensor detects that the dryness value of the steam is higher than a second threshold value, a second control signal is sent to the electric heating device 30, the second control signal being used to control the electric heating device 30 to be turned off, the first threshold value being smaller than the second threshold value.

In this embodiment, the electric heating material and the pipeline are combined, and the electric heating wire and the insulating material are arranged on the pipeline, so that after the electric heating wire and the insulating material are electrified, the medium in the pipeline can be heated, and the steam quality detector 10 synchronously monitors the dryness, the superheat degree and the non-condensable gas content of the steam. The dryness of steam means that steam generated at a boiling point temperature under a certain pressure becomes dry saturated steam, and the dryness is 1 at this time. However, in practice, it is difficult to generate 100% dry steam, and a certain amount of water drops are usually carried, and if the steam contains 10% moisture by mass, the steam is 90% dry. Therefore, the steam quality detector 10 is provided with a temperature sensor and a pressure sensor, and according to the correspondence table of the pressure and the temperature of the steam, one temperature corresponds to one pressure, and when the dryness of the steam is less than 95%, the electric heating device is started to heat the internal medium, so that the dryness of the steam can be better increased by heating, the superheat degree refers to that the liquid in the saturated state becomes saturated liquid, the corresponding steam is saturated steam, but is only saturated steam at first, and the dry saturated steam is obtained after the moisture in the steam is completely evaporated. The temperature is not increased in the process of unsaturated to wet to dry saturation, the temperature is increased to become superheated steam after the dry saturation is continued to be heated, and the saturated steam temperature and the pressure are in a corresponding relation, so that only any one data of the two data is monitored, and then the heat quantity of the saturated steam can be calculated by multiplying the steam quantity according to the corresponding value. The method can be set to be that when the overheat is more than 5 ℃, the dryness is more than or equal to 100 percent, and the electric heating is not required to be started at the moment. The steam quality detector 10, when condensing steam, which would seriously affect heat exchange efficiency if there is non-condensable gas, collects the non-condensable gas by using a graduated tube and measures the amount of the condensed steam, thus calculating the non-condensable gas content. The steam quality standard can be better achieved.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A vapor transmission system, comprising: the steam quality detector is used for detecting a sensor of steam dryness;

the output end of the steam inlet pipeline is connected with the steam inlet of the steam-liquid separator, the input port of the steam exhaust pipeline is connected with the steam exhaust port of the steam-liquid separator, and the liquid outlet of the steam-liquid separator is connected with the input end of the water exhaust pipeline;

the steam exhaust pipeline comprises a first section, a second section and a third section, the second section is positioned between the first section and the third section, the input end of the steam exhaust pipeline is positioned in the first section, the output end of the steam exhaust pipeline is positioned in the third section, the first section is provided with a first branch pipeline, the steam exhaust device is connected with the output end of the first branch pipeline, the electric heating device is arranged in the second section, the third section is provided with a sampling port, and the steam quality detector is connected with the sampling port through a pipeline; the drain valve is arranged on the drain pipeline.

2. The vapor delivery system of claim 1, wherein the vapor evacuation device comprises an evacuation valve and a vacuum break valve, an input of the evacuation valve being connected to an output of the first branch conduit; the exhaust valve is internally provided with a thermal static cavity, a steam outlet is formed in the cavity wall of the thermal static cavity, and the vacuum breaking valve is arranged in the steam outlet.

3. The vapor transmission system of claim 1, wherein the vapor-liquid separator comprises a tank and a vapor-liquid separation member, the vapor-liquid separation member is disposed in the tank, the vapor inlet is formed in the tank, and the vapor inlet is disposed between the vapor-liquid separation member and the liquid outlet.

4. A vapor transmission system as recited in claim 3 wherein said vapor-liquid separation member comprises a baffle plate connected to an inner wall of said tank to divide said tank into two chambers.

5. The vapor transport system of claim 4, wherein the vapor-liquid separation component further comprises a filler layer, the filler layer is coupled to the baffle and the filler layer is located on a side of the baffle that faces the vapor discharge.

6. The vapor delivery system of claim 1, comprising a shut-off valve comprising a first shut-off valve, a second shut-off valve, and a third shut-off valve, the first shut-off valve disposed on the first branch line between the vapor discharge device and the output of the first branch line.

7. The vapor delivery system of claim 6, wherein the second shut-off valve is disposed within the drain line and the second shut-off valve is disposed between a drain output of the vapor-liquid separator and an input of the drain valve.

8. The vapor delivery system of claim 7, wherein the third shut-off valve is disposed within the drain line and the third shut-off valve is disposed between a drain output of the drain valve and an output of the drain line.

9. The vapor delivery system of claim 1, wherein the trap is an inverted trap.

10. The vapor transmission system of claim 1, wherein the control device is configured to:

when the sensor detects that the dryness value of the steam is lower than a first threshold value, a first control signal is sent to the electric heating device, and the first control signal is used for controlling the electric heating device to be started;

and when the sensor detects that the dryness value of the steam is higher than a second threshold value, sending a second control signal to the electric heating device, wherein the second control signal is used for controlling the electric heating device to be turned off, and the first threshold value is smaller than the second threshold value.