CN212987162U

CN212987162U - Steam generator

Info

Publication number: CN212987162U
Application number: CN202021475590.0U
Authority: CN
Inventors: 彭永磊
Original assignee: Guangdong Wenyang Environmental Technology Co ltd
Current assignee: Guangdong Wenyang Environmental Technology Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-04-16
Anticipated expiration: 2030-07-23

Abstract

A steam generator comprising: staving, monitoring subassembly, first switch subassembly, second switch subassembly and heating member. The barrel body is provided with a first injection port and a second injection port; the monitoring component comprises a high-level liquid level switch, a middle-level liquid level switch and a low-level liquid level switch; the high-level liquid level switch, the middle-level liquid level switch and the low-level liquid level switch are respectively used for identifying the liquid level height in the barrel; in the vertical direction, the middle liquid level switch is positioned between the high liquid level switch and the low liquid level switch; the first switch assembly is used for controlling the opening and closing of the first injection port according to the liquid level change between the high-level liquid level switch and the low-level liquid level switch; the second switch component is used for controlling the opening of the second injection port according to the detection result of the middle liquid level switch; the heating member is used for heating the liquid in the staving. Thereby can guarantee the safety in utilization of heating member, can avoid again injecting non-distilled water in-process, the liquid temperature shock in the staving has guaranteed the stable supply of steam.

Description

Steam generator

Technical Field

The utility model relates to a steaming plant technical field especially relates to a steam generator.

Background

Steam generators are mechanical devices that use the heat energy of a fuel or other energy source to heat water into hot water or steam. When the steam generator is operated, distilled water is injected into the steam generator, when the distilled water is not sufficiently supplied, tap water is injected into the steam generator, and the heating component of the steam generator heats the stored water in the steam generator to generate steam and discharges the steam to the outside of the steam generator so as to provide the steam for an external device. Liquid level monitoring is typically provided within the steam generator, to control heating and the injection of tap water,

the existing steam generator generally stops heating and starts the injection of tap water when monitoring that the water level reaches a lower limit position, and does not heat again until monitoring that the water level reaches an upper limit position.

SUMMERY OF THE UTILITY MODEL

Accordingly, it is necessary to provide a steam generator to solve the problem that the stability of steam output is not good due to sudden temperature drop caused by the supplement of tap water.

A steam generator, comprising:

the barrel body is provided with a first injection port and a second injection port;

the monitoring assembly comprises a high-level liquid level switch, a middle-level liquid level switch and a low-level liquid level switch; the high-level liquid level switch, the middle-level liquid level switch and the low-level liquid level switch are respectively used for identifying the height of the liquid level in the barrel body; in the vertical direction, the middle liquid level switch is positioned between the high liquid level switch and the low liquid level switch;

the first switch assembly is used for controlling the opening and closing of the first injection port according to the liquid level change between the high-level liquid level switch and the low-level liquid level switch;

the second switch assembly is used for controlling the opening of the second injection port according to the detection result of the middle position liquid level switch; and

the heating element is used for heating the liquid in the barrel body.

According to the steam generator, when the liquid level in the barrel body is higher than the middle liquid level switch, the second switch component can control the second injection port to be closed, and the injection of non-distilled water is stopped. When the liquid level is between high-order liquid level switch and low level liquid level switch, thereby the second switch subassembly makes distilled water in time pour into according to the liquid level height into through first filling opening, preferentially utilizes the condensation to obtain and have the distilled water of uniform temperature to evaporate. When the supply of distilled water is insufficient and leads to the liquid level to be less than meso position liquid level switch, the second injection mouth is opened to the second switch subassembly, utilize non-distilled water to carry out the supply, because the stopping of heating member is triggered by low level liquid level switch, when the liquid level is between meso position liquid level switch and low level liquid level switch, the heating member lasts and heats to can guarantee the safe in utilization of heating member, can avoid again injecting non-distilled water in-process, the liquid temperature shock fall in the staving has guaranteed the stable supply of steam.

In one embodiment, the heating device further comprises an interlocking module, wherein the interlocking module is used for adjusting the working states of the second switch component and the heating element according to detection signals of the high-level liquid level switch, the middle-level liquid level switch and the low-level liquid level switch; thereby ensuring operational reliability of the steam generator.

In one embodiment, the interlock module is configured to trigger the second switch assembly to open the second injection port when the level of the liquid in the tub is between the mid level switch and the low level switch, such that the non-distilled water supplied by the water supply source flows into the tub from the second injection port.

In one embodiment, the interlock module is configured to trigger the second switch assembly to close the second injection port when the liquid level in the tub is higher than the high level switch, so that the non-distilled water supplied from the water supply source stops flowing into the tub from the second injection port.

In one embodiment, when the liquid level in the barrel body is lower than the low liquid level switch, the interlocking module is used for triggering the heating element to stop heating; thereby maintaining the liquid level in the barrel body and avoiding the steam generator from being overheated and damaged.

In one embodiment, the high level liquid level switch, the middle level liquid level switch and the low level liquid level switch are distributed close to the middle or the upper part of the barrel in the vertical direction; the heating element is arranged close to the bottom of the barrel body; thereby improving stability of steam supply.

In one embodiment, the high level liquid level switch, the middle level liquid level switch and the low level liquid level switch are mounted on the side wall of the barrel body; thereby being convenient to assemble and disassemble the high level liquid level switch, the middle level liquid level switch and the low level liquid level switch.

In one embodiment, the first switch assembly is a float valve including a valve portion connected to the first fill port and a valve stem movably connected to the valve portion; the movable end of the valve rod part extends to a position between the high-level liquid level switch and the middle-level liquid level switch; so that the liquid level in the barrel can be controlled between the high level liquid level switch and the middle level liquid level switch.

In one embodiment, the vertical section of the barrel body is circular; the bottom of the barrel body is provided with a drain port; therefore, when the barrel is overhauled and maintained, the evaporated liquid in the barrel can be discharged.

In one embodiment, the barrel further comprises a saddle for supporting the barrel; thereby the barrel body can be stably placed.

In one embodiment, the barrel body is further provided with an observation window, and the horizontal height of the observation window is positioned between the high-level liquid level switch and the middle-level liquid level switch; thereby whether the liquid level in the barrel body is between the high level liquid level switch and the middle level liquid level switch or not is conveniently confirmed.

In one embodiment, a lifting lug is arranged on the upper side of the barrel body; thereby conveniently utilize the lifting equipment to remove the processing to steam generator.

Drawings

Fig. 1 is a schematic structural view of a steam generator according to an embodiment of the present invention;

fig. 2 is a left side view of the steam generator shown in fig. 1.

The corresponding relation between each reference number and each meaning in the drawings is as follows:

100. a steam generator; 20. a barrel body; 21. a first injection port; 22. a second injection port; 23. emptying the air; 24. a steam outlet; 25. an observation sight glass; 26. lifting lugs; 31. a high level liquid level switch; 32. a middle liquid level switch; 33. a low level liquid level switch; 40. a first switch assembly; 41. a valve portion; 42. a valve stem portion; 60. a heating member; 80. a saddle seat.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 2, a steam generator 100 according to an embodiment of the present invention is used for outputting steam, which is supplemented with water from two sources, one of which is distilled water obtained by external condensation. The steam generator 100 includes: a tub 20, a monitoring assembly, a first switching assembly 40, a second switching assembly, and a heating member 60. The barrel 20 is provided with a first injection port 21 and a second injection port 22; the monitoring component comprises a high level liquid level switch 31, a middle level liquid level switch 32 and a low level liquid level switch 33; the high level liquid level switch 31, the middle level liquid level switch 32 and the low level liquid level switch 33 are respectively used for identifying the liquid level height in the barrel body 20; in the vertical direction, the middle liquid level switch 32 is positioned between the high liquid level switch 31 and the low liquid level switch 33; the first switch assembly 40 is used for controlling the opening and closing of the first injection port 21 according to the liquid level change between the high-level liquid level switch 31 and the low-level liquid level switch 33; the second switch component is used for controlling the opening of the second injection port 22 according to the detection result of the middle liquid level switch 32; the heating member 60 is used to heat the liquid in the tub 20; when the liquid level in the tub 20 is lower than the low level switch 33, the heating element 60 stops heating.

When the liquid level in the barrel 20 is higher than the middle liquid level switch 32, the second switch assembly can control the second injection port 22 to be closed, and the injection of the non-distilled water is stopped. When the liquid level is between the high level liquid level switch 31 and the low level liquid level switch 33, the second switch component enables the distilled water to be injected into the first injection port 21 in time according to the liquid level height, and the distilled water which is obtained by condensation and has a certain temperature is preferentially utilized to be evaporated. When the liquid level is lower than the middle liquid level switch 32 due to insufficient supply of distilled water, the second injection port 22 is opened by the second switch component, non-distilled water is used for supplying, the heating element 60 is continuously heated when the liquid level is between the middle liquid level switch 32 and the low liquid level switch 33 because the heating element 60 is stopped to be triggered by the low liquid level switch 33, so that the use safety of the heating element 60 can be ensured, the situation that the temperature of liquid in the barrel body 20 suddenly drops in the process of injecting the non-distilled water can be avoided, and the stable supply of steam is ensured.

Optionally, the non-distilled water replenished from the second injection port 22 is tap water, and the non-distilled water is supplied from a water supply source, which is optionally a tap water system or a water pump. Specifically, the distilled water injected from the first injection port 21 comes from a heat exchange device or a condensation device, i.e., the distilled water is obtained by condensing steam.

In one embodiment, the steam generator 100 further comprises an interlock module, which is configured to adjust the operating states of the second switch assembly and the heating element 60 according to the detection signals of the high level switch 31, the middle level switch 32, and the low level switch 33. The signals of the monitoring components are uniformly received through the interlocking module, so that the second switch component and the heating component 60 can be controlled in a centralized manner, and the operational reliability of the steam generator 100 is ensured.

In one embodiment, the interlock module is configured to trigger the second switch assembly to open the second fill port 22 when the liquid level in the barrel 20 is between the mid level switch 32 and the low level switch 33; when the liquid level in the barrel body 20 is higher than the high-level liquid level switch 31, the interlocking module is used for triggering the second switch assembly to close the second injection port 22; the interlock module is used to trigger the heater 60 to stop heating when the liquid level in the barrel 20 is below the low level switch 33.

In case of sufficient distilled water supply, the injection of distilled water is controlled by the first switch assembly 40, so that the liquid level inside the tub 20 is maintained between the high level switch 31 and the low level switch 33. Under the condition that the distilled water is not sufficiently supplied, the liquid level continuously drops along with evaporation, and after the interlocking module recognizes that the liquid level is lower than the level of the middle liquid level switch 32 through the middle liquid level switch 32, the interlocking module enables the second switch assembly to be opened, so that the non-distilled water flows in from the second injection port 22 to supplement the evaporated liquid in the barrel body 20. After the non-distilled water is replenished through the second injection port 22 until the liquid level in the tub 20 exceeds the level of the high level switch 31, the interlock module closes the second switch assembly to prevent the non-distilled water from flowing in through the second injection port 22. Under the condition that the distilled water is not sufficiently supplied, if the second switch component has a fault at the same time and the second injection port 22 cannot be opened, the liquid level continuously drops along with the evaporation consumption, and after the interlocking module recognizes that the liquid level is lower than the horizontal height of the low liquid level switch 33 through the low liquid level switch 33, the interlocking module stops the operation of the heating element 60, so that the steam generator 100 is prevented from being damaged due to overheating.

Optionally, the high level switch 31, the middle level switch 32 and the low level switch 33 are capacitive level switches, electronic level switches, pressure level switches, ball float level switches or other sensing devices with liquid level detection. Specifically, the second switch assembly is an electric switch valve connected to the second injection port 22, and the heating member 60 is a heating wire. Further, the interlock module also issues an alarm while the heating element 60 is out of operation, and notifies an operator of the maintenance process at that time.

Referring to fig. 1 and 2, in one embodiment, the high level switch 31, the middle level switch 32 and the low level switch 33 are distributed near the middle or upper portion of the barrel 20 in the vertical direction; the heating member 60 is disposed near the bottom of the tub 20. Through the detection of monitoring subassembly, can ensure that the liquid level in the staving 20 maintains at the middle part or the upper portion of staving 20, guarantee that the sufficient evaporation liquid of internal energy reserve of staving 20, improve the stability that steam supplied with, and guarantee that heating member 60 can be fully soaked by evaporation liquid, avoid heating member 60 overheated.

Referring to FIG. 2, in one embodiment, a high level switch 31, a middle level switch 32 and a low level switch 33 are mounted on the sidewall of the barrel 20. Thereby facilitating the assembly and disassembly of the high level liquid level switch 31, the middle level liquid level switch 32 and the low level liquid level switch 33.

Referring to fig. 1, in one embodiment, the first switch assembly 40 is a float valve, and includes a valve portion 41 connected to the first injection port 21 and a valve stem 42 movably connected to the valve portion 41; the movable end of the valve stem 42 extends between the high level switch 31 and the mid level switch 32. When the liquid level in the barrel body 20 is lower than the movable end of the valve rod part 42, the valve rod part 42 swings downwards under the action of gravity, so that the valve part 41 opens the first injection port 21, and distilled water is injected and supplemented from the first injection port 21 in time; when the liquid level is higher than the height of the movable end of the valve rod part 42, the valve rod part 42 swings upwards under the action of buoyancy, so that the valve part 41 closes the first injection port 21, and the liquid level in the barrel body 20 is prevented from being too high.

Referring to fig. 1 and 2, in one embodiment, the barrel 20 has a circular vertical cross-section; the bottom of the barrel 20 is provided with a drain 23. When the steam generator 100 needs to be repaired and maintained, the evaporated liquid in the barrel 20 can be discharged through the drain port 23; meanwhile, as the inner wall of the barrel body 20 is arc-shaped, the evaporated liquid can be completely drained to the evacuation port 23, which is beneficial to completely discharging the evaporated liquid in the barrel body 20. Specifically, the tub 20 is provided at an upper side thereof with a steam outlet 24, and the inner wall of the tub 20 also guides the steam to the steam outlet 24 when the steam rises.

Referring to fig. 1, in one embodiment, the steam generator 100 further includes a saddle 80 for supporting the tub 20. The bottom of the bucket body 20 is received in the groove of the saddle 80, so that the bucket body 20 can be stably placed. Optionally, the number of saddles 80 is one or more, preferably, the number of saddles 80 is two in order to control the volume and the overall number of individual saddles 80. The surface of the groove on the saddle 80 is of concave arc type.

Referring to fig. 1, in one embodiment, an observation window is further disposed on the barrel 20, and the horizontal height of the observation window is located between the high level switch 31 and the middle level switch 32. Thereby facilitating confirmation of whether the liquid level within the bowl 20 is between the high level switch 31 and the mid level switch 32.

Referring to fig. 1, in one embodiment, a lifting lug 26 is provided on the upper side of the tub 20. Thereby facilitating the moving process of the steam generator 100 using the sling device. Specifically, the lifting lug 26 is disposed at the top of the bucket body 20.

In this embodiment, when the liquid level inside the barrel 20 is higher than the mid-level switch 32, the second switch assembly can control the second injection port 22 to be closed, and stop injecting the non-distilled water. When the liquid level is between the high level liquid level switch 31 and the low level liquid level switch 33, the second switch component enables the distilled water to be injected into the first injection port 21 in time according to the liquid level height, and the distilled water which is obtained by condensation and has a certain temperature is preferentially utilized to be evaporated. When the liquid level is lower than the middle liquid level switch 32 due to insufficient supply of distilled water, the second injection port 22 is opened by the second switch component, non-distilled water is used for supplying, the heating element 60 is continuously heated when the liquid level is between the middle liquid level switch 32 and the low liquid level switch 33 because the heating element 60 is stopped to be triggered by the low liquid level switch 33, so that the use safety of the heating element 60 can be ensured, the situation that the temperature of liquid in the barrel body 20 suddenly drops in the process of injecting the non-distilled water can be avoided, and the stable supply of steam is ensured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A steam generator, comprising:

the heating element is used for heating the liquid in the barrel body.

2. The steam generator of claim 1, further comprising an interlock module for adjusting the operating states of the second switch assembly and the heating element according to the detection signals of the high level switch, the middle level switch, and the low level switch.

3. The steam generator of claim 2, wherein the interlock module is to trigger the second switch assembly to open the second injection port to allow non-distilled water supplied by a water supply source to flow from the second injection port into the tub when the level of the liquid in the tub is between the mid level switch and the low level switch.

4. The steam generator of claim 2, wherein the interlock module is configured to trigger the second switch assembly to close the second injection port when the level of the liquid in the tub is above the high level switch to stop the flow of non-distilled water supplied by the water supply source from the second injection port into the tub.

5. The steam generator of claim 2, wherein the interlock module is configured to trigger the heating element to stop heating when the liquid level in the tub is below the low level switch.

6. The steam generator of claim 1, wherein the high level switch, the mid level switch, and the low level switch are distributed near a middle or upper portion of the tub in a vertical direction; the heating member is arranged close to the bottom of the barrel body.

7. The steam generator of claim 6, wherein the high level switch, the mid level switch, and the low level switch are mounted on a sidewall of the tub.

8. The steam generator of claim 1, wherein the first switch assembly is a float valve including a valve portion connected to the first fill port and a valve stem movably connected to the valve portion; the movable end of the valve rod part extends to a position between the high-level liquid level switch and the middle-level liquid level switch.

9. The steam generator of claim 1, wherein the tub has a circular vertical cross-section; and the bottom of the barrel body is provided with an evacuation port.

10. The steam generator of claim 1, further comprising one or more of the following technical features:

the steam generator further includes a saddle for supporting the tub;

an observation window is further arranged on the barrel body, and the horizontal height of the observation window is positioned between the high-level liquid level switch and the middle-level liquid level switch;

the upper side of the barrel body is provided with a lifting lug.