CN111963903A

CN111963903A - Water supplementing system

Info

Publication number: CN111963903A
Application number: CN202010841326.2A
Authority: CN
Inventors: 刘维
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2020-11-20

Abstract

The invention discloses a water supplementing system, which is characterized in that the water pressure and the water flow of tap water are primarily adjusted through a water supply device and then are conveyed to a water supplementing device for secondary adjustment, so that the reasonable regulation and control of the water pressure and the water flow are realized; the water replenishing system is also provided with a water-steam separator for further separating liquid water in the steam and conveying the liquid water to the water replenishing device, so that the quality of a steam product is improved, the steam conversion efficiency is further improved, the energy utilization rate can be improved to a certain extent, and the water replenishing system has great significance for long-term stable operation of equipment.

Description

Water supplementing system

Technical Field

The invention belongs to the technical field of steam treatment, and particularly relates to a water supplementing system.

Background

The existing steam boiler heating system mostly adopts the mode that a steam product is obtained through heating tap water, and in the whole heating cycle process, the steps of circulating water replenishing, water-vapor separation and the like are included, while the existing water replenishing system cannot efficiently feed liquid water after water-vapor separation into the circulating water replenishing process, and meanwhile, in the circulating water replenishing process, the liquid water obtained by separation and the water in a circulating water channel are uniformly applied by lacking effective means, and the water quantity cannot be regulated and controlled in real time.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the present invention provides a water replenishing system, comprising:

the water supply device stores working water and is provided with a third water inlet at the bottom or a position close to the lower end; the water replenishing device is provided with a water storage cavity, a first water inlet communicated with the water storage cavity is arranged at the top of the water replenishing device, a first water outlet communicated with the water storage cavity is arranged at the bottom of the water replenishing device, a second water inlet communicated with the water storage cavity is arranged at a position close to the lower end of the water replenishing device, the third water inlet is communicated with the first water inlet, and the first water inlet is provided with a valve through which the opening and closing of the first water inlet are controlled; the water-vapor separator is provided with a separation cavity, the top of the water-vapor separator is provided with an air inlet flow channel and a steam outlet, the air inlet flow channel is communicated with the separation cavity and is spirally bent to form downward rotating steam flow, the bottom of the separation cavity is provided with a second water outlet, and the second water outlet is provided with a separation pipeline and is connected with a second water inlet through the separation pipeline.

According to some embodiments of the invention, the separation line has one or more U-shaped pipe sections, and a drain is provided at the bottom of the U-shaped pipe sections.

According to some embodiments of the invention, the separation pipeline comprises a circulating water pipe and a sewage discharge pipe, the sewage discharge pipe is positioned below the circulating water pipe, two ends of the sewage discharge pipe are both communicated with the circulating water pipe, and the sewage discharge pipe is a U-shaped pipe.

According to some embodiments of the invention, the valve is configured as a high precision level control float valve.

According to some embodiments of the invention, the valve seat is provided with a water inlet cavity, a water locking cavity and a valve plate, the center of the water inlet cavity is coincident with the center of the valve plate, the center of the water inlet cavity is provided with a water inlet channel, the cross-sectional area of the water inlet channel is smaller than that of the water locking cavity, the center of the water locking cavity, which is away from one end of the valve plate, is provided with a water outlet, the center of the valve plate is provided with a water passing structure, so that water with a certain pressure in the water inlet channel can enter the water locking cavity through the water passing structure, the floating ball penetrates through the valve seat through a piston rod, the axis of which is coincident with the center of the valve plate, and the water outlet can be closed by the piston rod from the outer side of the water outlet in the.

According to some embodiments of the invention, the valve seat is provided with an upper valve body and a lower valve body, the upper valve body and the lower valve body are connected into a whole through a flange to form an accommodating cavity, and the valve plate is compressed between the upper valve body and the lower valve body and divides the accommodating cavity into the water inlet cavity at the upper end and the water locking cavity at the lower end.

According to some embodiments of the present invention, a water inlet pipe is disposed at a central axis of the upper valve body, the water inlet flow channel is opened on the water inlet pipe, a lower end of the water inlet flow channel is provided with a conical valve port, a positioning surface perpendicular to a central line of the water inlet flow channel is disposed at a middle portion of an outer pipe wall of the water inlet pipe, a depth positioning ring is disposed at an upper end of the upper valve body corresponding to the positioning surface, and when the water inlet pipe is mounted on the upper valve body, the depth dimension of the conical valve port in the upper valve body is accurately positioned by the positioning surface abutting against the depth positioning ring.

According to some embodiments of the invention, the water inlet pipe is integrally connected to the upper valve body by a threaded connection.

According to some embodiments of the invention, the lower end of the upper valve body is provided with a pressing table, the end surface of the depth positioning ring and the flange surface of the lower end of the upper valve body are parallel to each other, the lower valve body is provided with a high step corresponding to the pressing table, the step surface of the high step is parallel to the flange surface of the upper end of the lower valve body, and the valve plate is tightly pressed between the pressing table and the high step.

According to some embodiments of the invention, the valve plate is made of high-temperature-resistant rubber, the lower end surface of the valve plate is provided with a concentric positioning groove, the lower valve body is provided with a concentric positioning groove, the axis of the concentric positioning groove is overlapped with the central axis of the lower valve body, and the concentric positioning ring is embedded in the concentric positioning groove.

According to some embodiments of the invention, a boss is arranged at the center of the valve plate in an area surrounded by the concentric positioning rings, a reinforcing metal sheet is filled in the boss, a conical mounting hole with a large upper part and a small lower part is arranged at the center of the reinforcing metal sheet, a plunger is mounted through the conical mounting hole, the plunger is made of hard material, the size of the cross section of the plunger is larger than that of the water inlet flow passage, a water through hole is arranged at the center of the plunger, and the cross section area of the water through hole is smaller than that of the water inlet flow passage.

According to some embodiments of the present invention, a conical valve element is disposed at an end of the plunger close to the water inlet channel, the conical valve element being engaged with the conical valve port, and an annular platform is disposed at a terminal end of the conical valve element.

According to some embodiments of the invention, a water control component is detachably arranged at the central axis position of the lower valve body, the water outlet is opened on the water control component, a cylinder penetrating through the water through hole is arranged at the upper end of the water control component, an annular water passing gap is reserved between the cylinder and the water through hole, and the cross-sectional area of the water passing gap is smaller than that of the water outlet, so that the water passing structure is formed through the water passing gap.

According to some embodiments of the invention, a limiting pressing sheet is arranged above the valve sheet, a abdicating hole for the plunger to pass through is formed in the center of the limiting pressing sheet, a low step is arranged on the inner side of the high step of the lower valve body, the projection of the outer edge of the boss on the horizontal plane falls on the low step, the radial length of the area of the valve sheet surrounded by the concentric positioning grooves is larger than the diameter of the concentric positioning grooves, and the valve sheet is not subjected to tensile deformation when the plunger abuts against the end of the water inlet flow passage and when the boss abuts against the low step.

According to some embodiments of the invention, the limiting pressing piece is provided with a plurality of water through holes, the limiting pressing piece is matched with the valve plate, and the valve plate is attached to the limiting pressing piece when the plunger abuts against the end part of the water inlet flow channel.

According to some embodiments of the invention, a tower spring is disposed in the water locking cavity, and an upper end of the tower spring supports the valve plate.

According to some embodiments of the invention, the valve seat is provided with a mounting wall outside the drainage opening, and the piston rod is arranged on the mounting wall in a penetrating way at a position corresponding to the drainage opening.

According to some embodiments of the invention, the valve seat is provided with a circle of extension wall extending towards the outside of the drain opening, a cover plate is installed at the tail end of the extension wall, the installation wall is formed by the cover plate, and the cover plate is provided with a drain opening.

According to some embodiments of the invention, a silicone pad is disposed at an end of the piston rod near the drain opening.

According to some embodiments of the present invention, the water inlet cavity is circumferentially provided with a plurality of ball float valve water outlets, and a sum of cross-sectional areas of the ball float valve water outlets is greater than a cross-sectional area of the water inlet flow passage.

The working principle of the high-precision water level control float valve is as follows:

the floating ball valve is under the effect of external water pressure, the water of the water inlet runner is injected into the water locking cavity all the time through the water passing structure at the center of the valve block, the water locking cavity is always kept in a full water state, the incompressible characteristic of water is utilized, as long as the size of the water discharge resistance is adjusted (embodied as the opening and closing size of a water discharge opening), the water pressure in the water locking cavity can be synchronously changed, the stress on two sides of the valve block can be out of balance, the valve block is caused to move, the opening degree of the valve is changed, the water flow is changed, the change of the water flow can be caused to change the water pressure of the water inlet runner, the valve block generates reaction force.

Specifically, when the water level rises, the floating ball drives the piston rod to move upwards, the gap between the rubber sheet at the top end of the piston rod and the water outlet is reduced, the water discharge resistance is increased, the water pressure in the water locking cavity rises, the valve plate moves upwards, the width between the plunger and the water inlet channel is reduced, the water inflow is reduced, the water flow is reduced, the water pressure of the water inlet channel is increased, the valve plate is subjected to opposite acting forces, and the displacement is stopped until the stress on the two sides of the valve plate is equal. When the water level continues to rise, the piston rod continues to move upwards to block the water outlet, the water discharge is zero, the water pressure in the water locking cavity reaches the maximum and is the same as the water pressure in the water inlet flow channel, and the valve plate moves upwards under the action of upward thrust until the valve is closed because the cross sectional area of the water locking cavity is larger than that of the water inlet flow channel.

When the water level is reduced and the floating ball drives the piston rod to move downwards, the gap between the rubber sheet at the top end of the piston rod and the water outlet is increased, the water discharge resistance is reduced, the water pressure in the water locking cavity is reduced, the valve plate moves downwards, the water inflow is increased, the water flow is increased, the water pressure of the water inlet flow channel is reduced, the valve plate is subjected to opposite acting force, and the displacement is stopped until the stress on the two sides of the valve plate is equal. When the water level continues to be reduced and the piston rod is lowered to the lowest position, the water discharge amount of the water discharge opening is maximum, the water pressure in the water locking cavity is minimum, the valve plate is lowered to the lowest position, and the water inlet amount reaches the maximum. The size of the gap between the silica gel pad at the top end of the piston rod and the water discharge opening determines the opening of the valve, so that the water inlet flow is controlled.

The invention has the beneficial effects that:

according to the water replenishing system provided by the invention, the water pressure and the water flow of tap water are primarily regulated through the water supply device and then are conveyed to the water replenishing device for secondary regulation, so that the reasonable regulation and control of the water pressure and the water flow are realized; the water replenishing system is also provided with a water-steam separator for further separating liquid water in the steam and conveying the liquid water to the water replenishing device, so that the separated liquid water can efficiently participate in the circulating water replenishing process, the quality of a steam product is improved, the steam conversion efficiency is further improved, the energy utilization rate can be improved to a certain degree, and the water replenishing system has great significance for long-term stable operation of equipment.

Drawings

The invention is further illustrated with reference to the following figures and examples:

FIG. 1 is a schematic diagram of a refill system according to the present invention;

FIG. 2 is a schematic view of the steam oven operating principle of the present invention;

FIG. 3 is an exploded view of a high precision water level control float valve of the present invention;

FIG. 4 is a schematic view showing a water-locking state of the valve plate;

FIG. 5 is a schematic view of the valve plate in water inlet state;

FIG. 6 is a schematic view of a structure of the valve plate;

FIG. 7 is a schematic view of one configuration of the upper valve body;

FIG. 8 is a schematic view of one configuration of a water control member;

reference numerals:

100-a water replenishing device, 101-a water-vapor separator, 102-an air inlet channel, 103-a steam outlet, 104-a second water outlet, 105-a sewage discharge pipe, 106-a circulating water pipe, 107-a first water inlet, 108-a first water outlet, 109-a second water inlet, 110-a water supply device and 111-a third water inlet;

1101-an upper valve body, 1102-a limiting pressing sheet, 1103-a plunger, 1104-a valve plate, 1105-a tower-shaped spring, 1106-a lower valve body, 1107-a water control component, 1108-a silica gel pad, 1109-a piston rod, 1110-a sliding bearing, 1111-a cover plate, 1112-a floating ball and 1113-an extension wall;

1201-water inlet flow channel, 1202-ball float valve water outlet, 1203-water inlet cavity, 1204-water locking cavity, 1205-water outlet, 1206-water outlet, 1207-reinforcing metal sheet, 1208-concentric positioning ring, 1209-depth positioning ring, 1210-conical mounting hole, 1211-cylinder, 1212-conical valve core, 1213-water through hole and 1214-through hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1-2, the invention discloses a water replenishing system applied to a steam boiler heating system, and a circulation process of the steam boiler heating system is briefly described herein, firstly, tap water heated by a steam boiler is heated for one time, then hot water is conveyed to a water supply device 110, steam is conveyed to a steam separator 101, then all the hot water obtained after treatment is uniformly stored in a water replenishing device 100, and then subsequent heating is carried out and the circulation is carried out again, so that a complete heating circulation process is formed. The essence of the cyclic heating method is that multiple times of heating and gradual temperature rise are adopted, and the cyclic heating method is different from the traditional one-time heating method, can greatly improve the steam conversion efficiency, improves the energy utilization rate to a certain extent, and has great significance for the long-term stable operation of equipment.

The water replenishing system disclosed in the present embodiment mainly includes (as shown in fig. 1):

a water supply device 110 for storing working water and having a third water inlet 111 at the bottom or near the lower end;

the water replenishing device 100 is provided with a water storage cavity, a first water inlet 107 communicated with the water storage cavity is arranged at the top of the water replenishing device, a first water outlet 108 communicated with the water storage cavity is arranged at the bottom of the water replenishing device, a second water inlet 109 communicated with the water storage cavity is arranged at a position close to the lower end of the water replenishing device, a third water inlet 111 is communicated with the first water inlet 107, and the first water inlet 107 is provided with a valve for controlling the opening and closing of the first water inlet 107;

the water-steam separator 101 is provided with a separation cavity, the top of the water-steam separator is provided with an air inlet channel 102 and a steam outlet 103 which are communicated with the separation cavity, the air inlet channel 102 is spirally bent to form a downward rotating steam flow, the bottom of the separation cavity is provided with a second water outlet 104, the second water outlet 104 is provided with a separation pipeline and is connected with a second water inlet 109 through the separation pipeline, the water-steam separator 101 forms the downward rotating steam flow by directly guiding the steam to the side wall of the separation cavity, on one hand, the steam can be fully contacted with the inner wall of the separation cavity to improve the water-steam separation effect, on the other hand, the steam can be rapidly output to avoid the phenomenon that a large amount of liquefaction is caused by the overlong flow time of the steam to the bottom of the separation cavity, so that the water-steam separation efficiency and the steam discharge efficiency can be improved to a certain extent, and after the separated, can participate in the whole cyclic heating and water replenishing process again.

In combination with the above specific structure, the specific water replenishing process is to primarily adjust the water pressure and water flow of the tap water through the water supply device 110, and then to convey the water to the water replenishing device 100 for secondary adjustment, so as to realize reasonable regulation and control of the water pressure and water flow; in particular, the number of the water inlets of the water supply device 110 is generally 4, so as to facilitate the flow distribution control.

Because the separation pipeline is provided with one or more U-shaped pipe sections, impurities are deposited at the bottoms of the U-shaped pipe sections, and a sewage discharge port can be arranged at the bottom of each U-shaped pipe section to achieve the aim of sewage discharge.

Specifically, the separating pipeline includes circulating water pipe 106 and blow off pipe 105, and blow off pipe 105 is located circulating water pipe 106's below, and blow off pipe 105's both ends all communicate circulating water pipe 106, and blow off pipe 105 sets up to the U type pipe, and accessible blow off pipe 105 forms above-mentioned U type pipeline section like this to be used for impurity to deposit, make the drain on the technical staff accessible U type pipeline section regularly clear up impurity, reach the purpose that improves the quality of water of circulation moisturizing.

Here, considering that the valve needs to have an automatic water replenishing function, the valve is set as a high-precision water level control float valve which has strong regulation and control capability.

The specific structure and function of the high-precision water level control float valve are further disclosed herein:

referring to fig. 3 to 7, the high-precision water level control float valve according to an embodiment of the present invention includes a valve seat and a float 1112, the valve seat is provided with a water inlet cavity 1203, a water locking cavity 1204 and a valve plate 1104 located therebetween, the center of the water inlet cavity 1203 corresponding to the valve plate 1104 is provided with a water inlet channel 1201, the cross-sectional area of the water inlet channel 1201 is smaller than the cross-sectional area of the water locking cavity 1204, the center of the water locking cavity 1204 at an end away from the valve plate 1104 is provided with a water outlet 1205, the center of the valve plate 1104 is provided with a water passing structure, so that water with a certain pressure in the water inlet channel 1201 can enter the water locking cavity 1204 through the water passing structure, the float 1112 penetrates through a piston rod 1109 whose axis coincides with the center of the valve plate 1104 and is capable of closing the water outlet 1205 from the outer side of the water outlet 1205 during the movement. Referring to fig. 5, a plurality of ball float valve outlets 1202 are formed in the circumferential direction of the inlet chamber 1203, and the sum of the cross-sectional areas of the ball float valve outlets 1202 is larger than the cross-sectional area of the inlet flow path 1201.

Specifically, the valve seat is provided with an upper valve body 1101 and a lower valve body 1106, the upper valve body 1101 and the lower valve body 1106 are connected into a whole through flanges to form a containing cavity, and the valve plate 1104 is pressed between the upper valve body 1101 and the lower valve body 1106 and divides the containing cavity into a water inlet cavity 1203 at the upper end and a water locking cavity 1204 at the lower end.

The central axis of the upper valve body 1101 is provided with a water inlet pipe 1100, the water inlet flow passage 1201 is arranged at the axis of the water inlet pipe 1100, the lower end of the water inlet flow passage 1201 is provided with a conical valve port, the middle part of the outer side pipe wall of the water inlet pipe 1100 is provided with a positioning surface perpendicular to the central line of the water inlet flow passage 1201, the upper end of the upper valve body 1101 is provided with a depth positioning ring 1209 corresponding to the positioning surface, and when the water inlet pipe 1100 is installed on the upper valve body 1101, the depth dimension of the conical valve port in the upper valve body 1101 is accurately positioned by the positioning surface. The water inlet pipe 1100 is integrally connected to the upper valve body 1101 by a screw connection.

With the structure arranged in this way, the connection strength of the upper valve body 1101 and the lower valve body 1106 is far better than that of the prior art with the patent number of CN101825905B, and the high-pressure valve is suitable for high-pressure conditions. And the assembly precision can be effectively improved through flange connection, the parallelism between the flange surface of the lower end surface of the upper valve body 1101 and the depth positioning ring 1209 can be ensured, and the direction and the position of the lower end surface of the water inlet pipe 1100 can be accurately positioned. In this way, the valve plate 1104 and the piston rod 1109 which are coaxially arranged are combined, so that the machining precision can be effectively ensured, and the machining is convenient.

In order to realize the installation of the valve sheet 1104, preferably, the lower end of the upper valve body 1101 is provided with a pressing table, the end surface of the depth positioning ring 1209 and the flange surface of the lower end of the upper valve body 1101 are parallel to each other, the lower valve body 1106 is provided with a high step corresponding to the pressing table, the step surface of the high step is parallel to the flange surface of the upper end of the lower valve body 1106, and the valve sheet 1104 is tightly pressed between the pressing table and the high step. Valve block 1104 adopts high temperature resistant rubber to make, and valve block 1104's lower terminal surface is provided with concentric positioning ring 1208, is provided with concentric positioning groove on the lower valve body 1106, and the axle center of concentric positioning groove coincides with the axis of lower valve body 1106, and concentric positioning ring 1208 inlays in concentric positioning groove to ensure that the skew can not take place in the course of the work.

Further, referring to fig. 6, a boss is arranged at the center of the valve plate 1104 in an area surrounded by the concentric positioning ring 1208, the reinforcing metal sheet 1207 is filled inside the boss, a tapered mounting hole 1210 with a large upper part and a small lower part is formed in the center of the reinforcing metal sheet 1207, a plunger 1103 is mounted through the tapered mounting hole 1210, the plunger 1103 is made of a hard material, the cross-sectional size of the plunger 1103 is larger than that of the water inlet flow passage 1201, a water through hole 1213 is formed in the center of the plunger 1103, and the cross-sectional area of the water through hole 1213 is smaller than that of the water inlet flow passage 1201.

Referring to fig. 4, 5 and 8, a conical surface valve core 1212 matching with the conical surface valve port is arranged at one end of the plunger 1103 close to the water inlet flow passage 1201, and the tail end of the conical surface valve core 1212 is a flat surface, and the tail end of the conical surface valve core 1212 is an annular platform due to the existence of the water through hole 1213. When the valve plate 1104 is close to the water inlet flow passage 1201, the valve plate can be inserted into the conical valve port at the end of the water inlet flow passage 1201 through the conical valve core 1212 to realize closing, and the area of the annular platform and the area of the conical surface jointly form a force bearing surface for the plunger 1103 to move downwards.

The central axis position of the lower valve body 1106 is detachably provided with a water control component 1107, the drain opening 1205 is opened on the water control component 1107, referring to fig. 4, 5 and 8, the upper end of the water control component 1107 is provided with a cylinder 1211 penetrating through the limber hole 1213, an annular water passing gap is reserved between the cylinder 1211 and the limber hole 1213, and the cross-sectional area of the water passing gap is smaller than that of the drain opening 1205, so that a water passing structure is formed through the water passing gap. The drain opening 1205 is provided in the bottom of the water control member 1107, and in order to communicate the drain opening 1205 with the water lock chamber 1204, referring to fig. 8, a horizontal through hole 1214 is provided in the bottom of the water control member 1107, the through hole 1214 passes through the water control member 1107 in the horizontal direction so that both ends communicate with the water lock chamber 1204, and the upper end of the drain opening 1205 communicates with the through hole 1214.

Valve block 1104 top is provided with spacing preforming 1102, the hole of stepping down that supplies plunger 1103 to pass is seted up at spacing preforming 1102's center, lower valve body 1106 is provided with low step in the inboard of high step, the projection that the outer fringe position of boss was arranged in on the horizontal plane falls on low step, the regional radial length that valve block 1104 was surrounded by concentric positioning groove is greater than the diameter of concentric positioning groove to when plunger 1103 supported the tip that leans on water inlet flow channel 1201 and the boss supported and leans on low step, valve block 104 all does not take place tensile deformation.

Further, seted up a plurality of water holes of crossing on the spacing preforming 1102, spacing preforming 1102 and valve block 1104 adaptation, when plunger 1103 supported by the tip that advances water flow channel 1201, spacing preforming 1102 of valve block 1104 laminating. Water clearance and water hole are for providing business turn over water passageway between valve block 1104 and the spacing preforming 1102 when valve block 1104 up-and-down motion jointly, avoid taking place the air suction adhesion phenomenon between the two to ensure the flexibility of valve block 1104 up-and-down motion.

Adopt the ball-cock assembly that above-mentioned structure set up, the cooperation of reinforcing sheetmetal 1207 and low step realizes down spacing of valve block 1104, the cooperation of plunger 1103 and the tip of intake pipe and the cooperation of valve block 1104 and spacing preforming 1102 realize the ascending spacing of valve block 1104, compared with the prior art that patent number is CN101825905B, tensile deformation has not taken place at the in-process of whole up-and-down motion to valve block 1104, under the operating condition of high pressure, high temperature, can effectively increase of service life, consequently, be applicable to steam boiler.

The whole structure is concentrically arranged, so each structure can be manufactured by adopting one machining center, and in the prior art with the patent number of CN101825905B, turning and milling are needed, namely, a plurality of machining centers are needed for machining, so that the production efficiency is higher, and the size precision is higher. And the whole structure is arranged concentrically, and compared with the prior art with the patent number of CN101825905B, the required installation size is smaller, and the application range is wider.

Because intake chamber 1203 is provided with ball-cock assembly delivery port 1202, consequently when valve block 1104 is downstreams, the thrust can not be too big, on the contrary when valve block 1104 is ascending, the pressure of the water pressure in lock water cavity 1204 to valve block 1104 can be great, consequently the setting of spacing preforming 1102 can effectively prevent that valve block 1104 from taking place tensile deformation because of the water pressure of lock water cavity 1204, effectively prolongs the life of valve block 1104. And the low step can effectively prevent the valve plate 1104 from deforming downwards to limit the downwards movement. Accordingly, the plunger 1103 is mounted through the tapered mounting hole 1210, and the thrust force applied to the valve sheet 1104 can be effectively ensured to act on the plunger 1103.

Because the cylinder 1211 and the plunger 1103 are made of hard materials, and the plunger 1103 moves up and down relative to the cylinder 1211 during operation, the formed water passing gap is dynamic, the dynamic water passing structure has the function of preventing sundry particles from blocking the annular water passing gap, and tiny particles which can enter the water locking cavity 1204 through the annular water passing gap can be smoothly discharged from the drain opening 1205 without accumulating in the water locking cavity 1204, so that the water locking cavity 1204 is ensured to have a long-term, stable and reliable water control function. This is an effect that the prior art with patent No. CN101825905B could not achieve.

The cylinder 1211 may be worn with the increase of the working time, so that the detachable arrangement can realize the detachment and replacement of the cylinder 1211, and the prior art with the patent number CN101825905B needs to replace the float valve as a whole, so that the use cost is greatly reduced compared with the prior art with the patent number CN 101825905B.

Further, a tower-shaped spring 1105 is arranged in the water locking cavity 1204, and the upper end of the tower-shaped spring 1105 supports the valve plate 1104. The spring 1105 provides a certain upward bias on the valve plate 1104 to ensure that water is locked when the water lock chamber 1204 is out of pressure at low water pressures.

As shown in fig. 4 and 5, in some embodiments, a circle of extension wall 1113 extends from the valve seat to the outside of the drain opening 1205, a cover 1111 is installed at the end of the extension wall 1113, an installation wall is formed outside the drain opening 1205 through the cover 1111, a drain port 1206 is opened on the cover 1111, and the piston rod 1109 is inserted into the cover 1111 at a position corresponding to the drain opening 1205 through a sliding bearing 1110.

And a silicone gasket 1108 is provided at an end of the piston rod 1109 close to the drain opening 1205 to ensure sealability to the drain opening 1205.

In the prior art with the patent number of CN101825905B, the piston part is of an eccentric structure, so deflection can occur and abrasion is serious, and the invention changes the piston part into a concentric structure, so that the movement is more stable and the service life is longer.

under the action of external water pressure, water in the water inlet channel 1201 is always injected into the water locking cavity 1204 through the water passing structure in the center of the valve plate 1104, the water locking cavity 1204 is always kept in a full water state, the incompressible characteristic of the water is utilized, as long as the size of the water discharge resistance (embodied as the opening and closing size of the water discharge opening 1205) is adjusted, the water pressure in the water locking cavity 1204 can be synchronously changed, the stress on the two sides of the valve plate 1104 can be out of balance, the valve plate 1104 can be displaced to change the opening degree of the valve, the water flow rate can be changed, the water pressure in the water inlet channel 1201 can be changed due to the change of the water flow rate, and the valve plate 1104 can generate a reaction force.

Specifically, when the water level rises, the floating ball 1112 drives the piston rod 1109 to move upwards, the gap between the film at the top end of the piston rod 1109 and the water outlet 1205 is reduced, the water discharge resistance is increased, the water pressure in the water locking cavity 1204 rises, the valve plate 1104 moves upwards, the width between the plunger 1103 and the water inlet flow passage 1201 is reduced, the water inlet amount is reduced, the water flow is reduced, the water pressure of the water inlet flow passage 1201 rises again, the valve plate 1104 is subjected to opposite acting forces until the two sides of the valve plate 1104 are stressed equally, and the displacement is stopped. When the water level continues to rise, the piston rod 1109 continues to move upwards to block the drain opening 1205, the drain is zero, the water pressure in the water locking cavity 1204 reaches the maximum and is the same as the water pressure in the water inlet flow passage 1201, and the valve plate 1104 moves upwards under the upward thrust until the valve is closed because the cross section area of the water locking cavity 1204 is larger than that of the water inlet flow passage 1201.

When the water level is reduced, the floating ball 1112 drives the piston rod 1109 to move downwards, the gap between the rubber sheet at the top end of the piston rod 1109 and the water discharge port 1205 is increased, the water discharge resistance is reduced, the water pressure in the water locking cavity 1204 is reduced, the valve plate 1104 moves downwards, the water inflow is increased, the water flow is increased, the water pressure of the water inlet flow channel 1201 is reduced, the valve plate 1104 is subjected to opposite acting forces, and the displacement is stopped until the stress on the two sides of the valve plate 1104 is equal. When the water level continues to be reduced and the piston rod 1109 is reduced to the lowest position, the water discharge amount of the water discharge opening 1205 is the largest, the water pressure in the water locking cavity 1204 is the lowest, the valve plate 1104 is reduced to the lowest, and the water inlet amount reaches the largest. The size of the gap between the silica gel pad 1108 on the top end of the piston rod 1109 and the water discharge opening 1205 determines the size of the opening of the valve, thereby controlling the amount of inflow water.

In conclusion, the high-precision water level control float valve design has the functions of automatically adjusting the water inflow and changing along with the demand in real time, and is particularly suitable for the water inflow supply of a circulating steam boiler. According to the float valve disclosed by the invention, the drain port 1205 can be opened when the float 1112 descends a very small distance, so that the water inlet channel 1201 is communicated to realize water inlet, and compared with the traditional float valve structure, the float valve is more suitable for the use condition of a steam boiler, the condition of dry burning caused by untimely water inlet is avoided, and the practicability is high.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water refill system, comprising:

a water supply device (110) which stores working water and is provided with a third water inlet (111) at the bottom or a position close to the lower end;

the water replenishing device (100) is provided with a water storage cavity, a first water inlet (107) communicated with the water storage cavity is formed in the top of the water replenishing device, a first water outlet (108) communicated with the water storage cavity is formed in the bottom of the water replenishing device, a second water inlet (109) communicated with the water storage cavity is formed in the position close to the lower end of the water replenishing device, the third water inlet (111) is communicated with the first water inlet (107), the first water inlet (107) is provided with a valve, and the valve is used for controlling the first water inlet (107) to be opened and closed;

the water-steam separator (101) is provided with a separation cavity, the top of the water-steam separator is provided with an air inlet flow channel (102) and a steam outlet (103) which are communicated with the separation cavity, the air inlet flow channel (102) is spirally bent to form a downward rotating steam flow, the bottom of the separation cavity is provided with a second water outlet (104), and the second water outlet (104) is provided with a separation pipeline and is connected with a second water inlet (109) through the separation pipeline.

2. The refill system of claim 1, wherein the separation line comprises one or more U-shaped sections, and a drain outlet is provided at the bottom of the U-shaped section.

3. The water replenishing system according to claim 2, wherein the separation pipeline comprises a circulating water pipe (106) and a sewage draining pipe (105), the sewage draining pipe (105) is positioned below the circulating water pipe (106), two ends of the sewage draining pipe (105) are communicated with the circulating water pipe (106), and the sewage draining pipe (105) is a U-shaped pipe.

4. The system of claim 1, wherein the valve is configured as a high precision level control float valve.

5. The water replenishing system according to claim 4, wherein the high-precision water level control float valve comprises a valve seat and a float ball (1112), the valve seat is provided with a water inlet cavity (1203) and a water locking cavity (1204) which are overlapped at the center, and a valve plate (1104) positioned between the water inlet cavity and the water locking cavity, the water inlet cavity (1203) is provided with a water inlet flow channel (1201) corresponding to the center of the valve plate (1104), the cross-sectional area of the water inlet flow channel (1201) is smaller than that of the water locking cavity (1204), the center of one end of the water locking cavity (1204) far away from the valve plate (1104) is provided with a water outlet (1205), the center of the valve plate (1104) is provided with a water passing structure, so that water with certain pressure in the water inlet flow channel (1201) can enter the water locking cavity (1204) through the water passing structure, and the float ball (1112) passes through a piston rod (1109) of which the axis is overlapped with the center of the valve plate (1104, the piston rod (1109) can close the drain opening (1205) from the outside of the drain opening (1205) in the moving process.

6. The water replenishing system according to claim 5, wherein the valve seat is provided with an upper valve body (1101) and a lower valve body (1106), the upper valve body (1101) and the lower valve body (1106) are connected into a whole through a flange to form a containing cavity, and the valve plate (1104) is compressed between the upper valve body and the lower valve body and divides the containing cavity into the water inlet cavity (1203) at the upper end and the water locking cavity (1204) at the lower end.

7. The water replenishing system according to claim 6, wherein a water inlet pipe is arranged in a central axis position of the upper valve body (1101), the water inlet flow passage (1201) is opened on the water inlet pipe, the lower end of the water inlet flow passage (1201) is provided with a conical valve port, a positioning surface perpendicular to a central line of the water inlet flow passage (1201) is arranged in the middle of an outer pipe wall of the water inlet pipe, a depth positioning ring (1209) is arranged at the upper end of the upper valve body (1101) corresponding to the positioning surface, and when the water inlet pipe is mounted on the upper valve body (1101), the depth dimension of the conical valve port in the upper valve body (1101) is accurately positioned by the positioning surface abutting against the depth positioning ring (1209).

8. The water replenishing system according to claim 7, wherein a pressing platform is arranged at the lower end of the upper valve body (1101), the end surface of the pressing platform, the end surface of the depth positioning ring (1209) and the flange surface at the lower end of the upper valve body (1101) are parallel to each other, a high step is arranged on the lower valve body (1106) corresponding to the pressing platform, the step surface of the high step is parallel to the flange surface at the upper end of the lower valve body (1106), and the valve sheet (1104) is tightly pressed between the pressing platform and the high step.

9. The water replenishing system according to claim 8, wherein the valve plate (1104) is made of high temperature resistant rubber, a concentric positioning ring (1208) is arranged on the lower end surface of the valve plate (1104), a concentric positioning groove is arranged on the lower valve body (1106), the axis of the concentric positioning groove coincides with the central axis of the lower valve body (1106), and the concentric positioning ring (1208) is embedded in the concentric positioning groove.

10. The water replenishing system of claim 9, wherein a boss is arranged in an area surrounded by the concentric positioning ring (1208) of the valve plate (1104), a reinforcing metal sheet (1207) is filled in the boss, a tapered mounting hole (1210) with a large upper part and a small lower part is formed in the center of the reinforcing metal sheet (1207), a plunger (1103) is mounted through the tapered mounting hole (1210), the plunger (1103) is made of a hard material, the cross-sectional dimension of the plunger (1103) is larger than that of the water inlet flow channel (1201), and a water through hole (1213) is formed in the center of the plunger (1103).