Water supply device for steam generator

Abstract

The utility model relates to the technical field of steam generators, and discloses a water supply device for a steam generator, a multi-stage pump (3), a regulating valve (4) and a flow meter (5) are sequentially arranged on a water outlet pipe (2), a controller (6) is coupled to the flow meter (5), and the regulating valve (4) is coupled to and controlled by the controller (6); the multi-stage pump (3) is used for providing power for the water outlet pipe (2) so as to pump pure water in the water storage barrel (1), the flow meter (5) is used for monitoring the water flow of the water outlet pipe (2) and sending the measured water flow to the controller (6), and a flow threshold value is preset in the controller (6). The flow of the water outlet pipe (2) is adjusted and controlled through the cooperation of the flow meter (5), the controller (6) and the adjusting valve (4), the function of accurately controlling the water outlet amount by effectively replacing an original gear pump can be achieved, the defects of the gear pump can be effectively overcome, and therefore the whole water supply device is lower in economic cost, longer in service life and better in reliability.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam generator technical field especially relates to a water supply device for steam generator. BACKGROUND

[0002] Steam generator, also called steam heat source machine, is the equipment that water is heated to steam using the heat energy of fuel or other energy. Among them, the water supply device as the important front equipment of steam generator, can provide pure water for steam generator. In the prior art, the water supply device for steam generator mainly includes a water storage bucket, a water outlet pipe arranged at the bottom of the water storage bucket, and a water pump arranged on the water outlet pipe. When the water supply device is running, the water flow needs to be accurately controlled. If the water flow is too large, it is easy to cause the steam quality of the steam generator to be poor. If the water flow is too low, it is easy to cause the temperature of the water storage bucket to be too high, so that the service life is difficult to guarantee. In order to accurately control the water flow and the water flow rate of the water outlet pipe, a gear pump is usually selected as the water pump. However, the gear pump has high cost, large noise during operation, and leakage phenomenon during long-term operation, so the existing water supply device for steam generator needs to be improved. SUMMARY

[0003] The utility model provides a water supply device for steam generator in view of the shortcomings of prior art, can realize the accurate water outlet of water outlet pipe, can effectively reduce the cost of device, and reduce the noise and leakage phenomenon generated during the operation of device.

[0004] In order to solve the above technical problem, the utility model solves through the following technical scheme:

[0005] A water supply device for steam generator, comprising a water storage bucket and a water outlet pipe arranged at the bottom of the water storage bucket, a plurality of pumps, a regulating valve and a flow meter are sequentially arranged on the water outlet pipe, a controller is coupled to the flow meter, and the regulating valve is coupled to and controlled by the controller. The multi-stage pump is used to provide power to the water outlet pipe to extract pure water in the water storage bucket. The flow meter is used to monitor the water flow of the water outlet pipe and send the measured water flow to the controller. A flow threshold is preset in the controller.

[0006] When the water flow received by the controller is greater than the flow threshold, the controller controls the regulating valve to reduce the opening degree to reduce the actual water flow in the water outlet pipe.

[0007] Conversely, when the water flow received by the controller is less than the flow threshold, the controller controls the regulating valve to increase the opening degree to increase the actual water flow in the water outlet pipe.

[0008] By the above scheme, the multi-stage pump is used to provide water pumping power for the water outlet pipe, and the flow meter, the controller and the regulating valve are cooperated to adjust and control the flow of the water outlet pipe, which can effectively replace the function of the gear pump to precisely control the water outlet, avoid the shortcomings of the gear pump, reduce the economic cost of the water supply device, prolong the service life, and improve the reliability.

[0009] Preferably, the end of the water outlet pipe is connected to the water inlet end of the steam generator.

[0010] By the above scheme, the water supply device can supply water for the steam generator and ensure the flow accuracy.

[0011] Preferably, the water storage bucket is further provided with a water inlet pipe.

[0012] By the above scheme, the staff can conveniently add water to the water storage bucket, thereby ensuring the endurance of the water storage bucket.

[0013] Preferably, the water inlet pipe is located near the top of the water storage bucket.

[0014] By the above scheme, the water storage capacity of the water storage bucket can be effectively improved, thereby improving the practicality of the water storage bucket.

[0015] Preferably, the top of the water storage bucket is provided with a vent.

[0016] By the above scheme, the vent can avoid negative pressure in the water storage bucket, so that the pure water in the bucket can be smoothly discharged. At the same time, when the temperature in the water storage bucket is too high, the excess pressure in the bucket can be discharged through the vent to avoid deformation or even explosion of the water storage bucket, thereby effectively prolonging the service life and reducing the use risk.

[0017] Preferably, the vent is surrounded by four air filters connected end to end, and the space formed by the four air filters is covered with a cover.

[0018] By the above scheme, the air entering the vent is cleaner, thereby ensuring the purity of the pure water in the water storage bucket.

[0019] Preferably, vertical support rods are arranged above the four corners of the vent, the outer edges of the air filters are covered with hard edges, the opposite surfaces of adjacent support rods are provided with sliding grooves for sliding and clamping the hard edges on both sides of the air filters along the length direction of the support rods, the upper ends of the sliding grooves extend to the upper ends of the support rods, and the top of the water storage bucket is provided with a sealing groove between two opposite sliding grooves for clamping the lower end of the hard edge.

[0020] Adopting the above scheme, the sliding clamping cooperation between the hard edge cover and the sliding clamping groove can realize the quick disassembly and assembly between the air filter element and the supporting rod and ensure the stability after installation. The cooperation between the hard edge cover and the sealing clamping groove can further improve the sealing performance and stability of the air filter element after installation.

[0021] As preferred, the four corners of the cover are respectively fixed on the top of the four supporting rods by screws to prevent the hard edge cover of the air filter element from being separated from the sliding clamping groove.

[0022] Adopting the above scheme, the cover can effectively lock the air filter element and ensure the sealing performance and stability of the air filter element after installation.

[0023] As preferred, the edge of the cover extends outwardly with a dust baffle corresponding to the position of the four air filter elements.

[0024] Adopting the above scheme, the dust baffle can effectively block a part of dust in the air to reduce the dust deposition speed on the surface of the air filter element, thereby effectively prolonging the service life of the air filter element.

[0025] As preferred, the side close to the cover of the dust baffle extends with a movable pivot connecting seat, the outer edge of the cover is provided with a fixed pivot connecting seat at both end positions, the two ends of the movable pivot connecting seat extend outwardly with a pivot shaft, the opposite faces of the two fixed pivot connecting seats are provided with pivot holes for respectively rotating and inserting the two pivot shafts, and the pivot shaft and the pivot hole are in interference fit to make the static friction force between them greater than the torsional force generated by the weight of the dust baffle.

[0026] Adopting the above scheme, the cooperation between the pivot shaft and the pivot hole can not only facilitate the up-down angle adjustment of the dust baffle, but also make the dust baffle hover at the current angle position, so as to adjust the opening degree of the air filter element and the dust blocking capacity according to the needs of the staff. When the water storage bucket is idle for a long time, the cover can be completely closed to cover the outer surface of the air filter element, thereby preventing the filter element from being damaged.

[0027] The utility model discloses a water supply device, which comprises a water storage bucket, a water outlet pipe, a water inlet pipe, a multi-stage pump, a flow meter, a controller and an adjusting valve. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a system structure diagram of the embodiment;

[0029] Figure 2 It is a structure diagram of the embodiment; Figure One ;

[0030] Figure 3 For Figure 2 enlarged view of A part shown in FIG. 1;

[0031] Figure 4 For Figure Two ;

[0032] Figure 5 For Figure 4 enlarged view of B part shown in FIG. 1;

[0033] Figure 6 For Figure 5 enlarged view of C part shown in FIG. 1;

[0034] Figure 7 For Figure 5 enlarged view of D part shown in FIG. 1.

[0035] The part names referred to by the respective numbers in the above drawings are as follows: 1, water storage bucket; 2, water outlet pipe; 3, multi-stage pump; 4, regulating valve; 5, flow meter; 6, controller; 7, steam generator; 8, water inlet end; 9, water inlet pipe; 10, air vent; 11, air filter element; 12, cover; 13, support rod; 14, hard edge; 15, sliding clamping groove; 16, sealing clamping groove; 17, screw; 18, dust shield; 19, movable pivot seat; 20, fixed pivot seat; 21, pivot shaft; 22, pivot hole; 23, support; 24, gripping member. DETAILED DESCRIPTION

[0036] The utility model will be described in further detail below in combination with the drawings and examples.

[0037] As Figures 1 to 7As shown, the embodiment discloses a water supply device for steam generator, which comprises a water storage bucket 1 for storing pure water and a water outlet pipe 2 arranged at the bottom of the water storage bucket 1. The bottom of the water storage bucket 1 is provided with a support 23, so that the water storage bucket 1 can be stably installed on the ground. The end of the water outlet pipe 2 is connected to the water inlet end 8 of the steam generator 7, so that it can provide a stable water source for the steam generator 7. The water outlet pipe 2 is sequentially provided with a multi-stage pump 3, an adjusting valve 4 and a flow meter 5. The flow meter 5 is coupled with a controller 6, which is preferably a single-chip microcomputer or a PLC. The adjusting valve 4 is coupled with and controlled by the controller 6. In this embodiment, the multi-stage pump 3 is used to provide power to the water outlet pipe 2 to extract pure water in the water storage bucket 1. The flow meter 5 is used to monitor the water flow of the water outlet pipe 2 and send the measured water flow to the controller 6. The controller 6 is pre-set with a flow threshold value. When the water flow received by the controller 6 is greater than the flow threshold value, the controller 6 controls the adjusting valve 4 to reduce the opening degree, so as to reduce the actual water flow in the water outlet pipe 2. Conversely, when the water flow received by the controller 6 is less than the flow threshold value, the controller 6 controls the adjusting valve 4 to increase the opening degree, so as to increase the actual water flow in the water outlet pipe 2, so that the water flow of the water outlet pipe 2 is balanced.

[0038] In order to facilitate the addition of pure water to the water storage bucket 1, the water storage bucket 1 is also provided with a water inlet pipe 9, the other end of which is connected to an external water source (not shown). The water inlet pipe 9 is located near the top of the water storage bucket 1 to improve the upper limit of the water level of the water storage bucket 1.

[0039] In order to avoid the negative pressure or excessive positive pressure of the water storage bucket 1, a square air vent 10 is opened at the top of the water storage bucket 1. Four air filter cartridges 11 are arranged around the air vent 10. The space formed by the four air filter cartridges 11 is covered with a square cover 12.

[0040] In order to facilitate the replacement of the air filter cartridges 11 and ensure the stability after installation, vertical support rods 13 are arranged above the air vent 10 at the four corner positions. The outer edges of the air filter cartridges 11 are covered with hard edges 14 made of plastic or metal. The opposite surfaces of the adjacent support rods 13 are provided with sliding clamping grooves 15 along the length direction of the support rods 13, respectively, for sliding clamping of the hard edges 14 on both sides of the air filter cartridges 11. The upper end of the sliding clamping groove 15 extends to the upper end of the support rod 13 to form an opening for the hard edges 14 to slide into or out of the sliding clamping groove 15. A sealing groove 16 is arranged between two opposite sliding clamping grooves 15 at the top of the water storage bucket 1 for clamping the lower end of the hard edges 14. It can effectively improve the sealing between the lower end of the air filter cartridges 11 and the top of the water storage bucket 1, thereby improving the dust removal effect of the air filter cartridges 11.

[0041] In order to lock the installed air filter 11, the four corners of the cover 12 are fixed on the top of the four supporting rods 13 by screws 17 respectively to prevent the hard edge 14 of the air filter 11 from slipping out of the sliding slot 15.

[0042] In order to reduce the impact of dust on the air filter 11, the edge of the cover 12 is extended outward with a dust plate 18 corresponding to the position of the four air filters 11. The dust plate 18 extends with a movable pivot seat 19 near one side of the cover 12, and the outer edge of the cover 12 is provided with a fixed pivot seat 20 at both ends, and the two ends of the movable pivot seat 19 are extended outward with a pivot shaft 21, and the opposite faces of the two fixed pivot seats 20 are provided with pivot holes 22 for the two pivot shafts 21 to rotate and insert respectively, and the pivot shaft 21 and the pivot hole 22 are interference fit to make the static friction between them greater than the torsional force generated by the weight of the dust plate 18.

[0043] The specific working principle is as follows:

[0044] When the water supply device is running, the multi-stage pump 3 is started first to extract pure water in the water storage bucket 1 through the outlet pipe 2 and supply the inlet end 8 of the steam generator 7. In this process, the flow meter 5 can monitor the actual water flow of the outlet pipe 2 and send the data corresponding to the water flow to the controller 6, and the controller 6 can compare the received water flow data with the built-in flow threshold value. If the received water flow value is greater than the flow threshold value, the controller 6 controls the adjusting valve 4 to reduce the opening to reduce the actual water flow in the outlet pipe 2; on the contrary, when the received water flow value is less than the flow threshold value, the controller 6 controls the adjusting valve 4 to increase the opening to increase the actual water flow in the outlet pipe 2, so that the outlet flow of the outlet pipe 2 remains stable, thereby realizing stable water supply of the steam generator 7.

[0045] When the pure water in the water storage bucket 1 is insufficient, the staff can add water to the water storage bucket 1 through an external water source (not shown) and the inlet pipe 9, thereby ensuring the endurance of the water storage bucket 1.

[0046] The water storage bucket 1 can use the air vent 10 to ensure the air pressure balance in the water storage bucket 1 during the process of adding water and discharging water. When the internal part of the water storage bucket 1 appears negative pressure due to discharging water or low temperature, external air can enter the air vent 10 in time. In the process of entering, the air filter 11 can effectively filter out impurities in the air, thereby avoiding the pollution of the pure water in the water storage bucket 1.

[0047] In order to reduce the dust pollution on the surface of the air filter 11 to prolong its service life, the dust baffle 18 is turned up around the pivot shaft 21 and adjusted to the appropriate position to block part of the falling dust. In order to facilitate the turning of the dust baffle 18, a holding piece 24 is arranged on the outer side of the dust baffle 18 to make it easier for the staff to force when opening the dust baffle 18. In order to be able to adjust the opening of the air filter 11, the staff can turn the dust baffle 18 to a specific angle according to the needs and make it hover at the angle position.

[0048] When the water storage bucket 1 needs to be idle for a long time, the dust baffle 18 is turned down to completely cover the surface of the air filter 11, which can prevent external dust from adhering to the surface of the air filter 11, thereby prolonging the service life of the air filter 11.

[0049] When the air filter 11 needs to be replaced, the four screws 17 on the cover 12 are unscrewed to unlock the cover 12. Then, the cover 12 is removed to unlock the air filter 11 in the longitudinal direction, so that the air filter 11 can be pulled out from between the two adjacent support rods 13. After the air filter 11 is pulled out, the hard edges 14 on both sides of the new air filter 11 are respectively slid and clamped in the two opposite sliding clamping grooves 15 of the two support rods 13, and the lower end of the hard edge 14 is pressed through the air filter 11 into the sealing clamping groove 16 between the two sliding clamping grooves 15, thereby completing the installation of the air filter 11. After all the air filters 11 are installed, the cover 12 is reattached to the top of the four support rods 13, and the screws 17 are used to lock the cover 12, thereby preventing the air filter 11 from being separated from the sliding clamping groove 15.

Claims

1. A water supply device for a steam generator, comprising a water storage bucket (1) and a water outlet pipe (2) arranged at the bottom of the water storage bucket (1), characterized in that: The water outlet pipe (2) is sequentially provided with a multi-stage pump (3), an adjusting valve (4) and a flow meter (5), the flow meter (5) is coupled with a controller (6), the adjusting valve (4) is coupled with and controlled by the controller (6); the multi-stage pump (3) is used for providing power to the water outlet pipe (2) to extract pure water in the water storage bucket (1), the flow meter (5) is used for monitoring the water flow of the water outlet pipe (2) and sending the measured water flow to the controller (6), the controller (6) is preset with a flow threshold value; when the water flow received by the controller (6) is greater than the flow threshold value, the controller (6) controls the adjusting valve (4) to reduce the opening degree, so as to reduce the actual water flow in the water outlet pipe (2); On the contrary, when the water flow received by the controller (6) is less than the flow threshold value, the controller (6) controls the adjusting valve (4) to increase the opening degree, so as to increase the actual water flow in the water outlet pipe (2).

2. A feedwater system for a steam generator as claimed in claim 1, wherein: The end of the water outlet pipe (2) is connected to the water inlet end (8) of the steam generator (7).

3. A feedwater installation for a steam generator according to claim 1 or 2, characterized in that The water storage bucket (1) is also provided with a water inlet pipe (9).

4. A feedwater system for a steam generator as claimed in claim 3, wherein: The water inlet pipe (9) is located near the top of the water storage bucket (1).

5. A feedwater system for a steam generator as claimed in claim 1 or 2, characterized in that: The top of the water storage bucket (1) is provided with a vent (10).

6. A feedwater system for a steam generator as claimed in claim 5, wherein: The top of the vent (10) is surrounded by four air filters (11) connected end to end, and the space formed by the four air filters (11) is covered with a cover (12).

7. A feedwater system for a steam generator as claimed in claim 6, wherein: The top of the vent (10) is provided with a vertical support rod (13) at each of the four corners, and the outer edge of the air filter (11) is covered with a hard edge (14). The opposite surfaces of adjacent support rods (13) are provided with sliding grooves (15) along the length direction of the support rods (13) for slidingly connecting the hard edges (14) on both sides of the air filter (11). The upper end of the sliding groove (15) extends to the upper end of the support rod (13). The top of the water storage bucket (1) is provided with a sealing groove (16) between two opposite sliding grooves (15) for clamping the lower end of the hard edge (14).

8. A feedwater system for a steam generator as claimed in claim 7, wherein: The four corners of the cover (12) are fixed to the top of the four support rods (13) by screws (17) to prevent the hard edge (14) of the air filter (11) from coming off the sliding groove (15).

9. A feedwater system for a steam generator as set forth in claim 6, wherein: The edge of the cover (12) extends outwardly at the position corresponding to the four air filters (11) to form a dust baffle (18).

10. A feedwater system for a steam generator as claimed in claim 9, wherein: The side of the dust baffle (18) close to the cover (12) extends an active pivot seat (19), and the outer edge of the cover (12) is provided with a fixed pivot seat (20) at both ends. The two ends of the active pivot seat (19) extend outwardly to form a pivot shaft (21), and the opposite surfaces of the two fixed pivot seats (20) are provided with pivot holes (22) for rotatably connecting the two pivot shafts (21). The pivot shaft (21) and the pivot hole (22) are in interference fit, so that the static friction between them is greater than the torsional force generated by the weight of the dust baffle (18).

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