Boiler device capable of being quickly started
By adding bypass pipelines and regulating valves in the boiler device, steam is used to replenish steam to the boiler and deaerator, the problem of slow heating of the boiler in the prior art is solved, and rapid start-up and shortened start-up time are achieved.
Patent Information
- Application Number
- CN202422822859.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-11-19
AI Technical Summary
The existing boiler needs to heat up slowly when the furnace is shut down, and it takes 60 minutes to start cold until the steam is produced, so it cannot be started quickly.
A bypass pipeline and a bypass regulating valve are added to the boiler device, and the steam from the steam main network is replenished to the boiler and deaerator through the bypass pipeline to ensure that the boiler furnace and deaerator quickly heat up to 80°C.
The time from boiler shutdown to steam output is shortened, rapid start is achieved, and time requirement for emergency start-up is reduced.
Smart Images
Figure CN223165554U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a boiler device, in particular to a boiler device that can be quickly started. Background Art
[0002] The water introduced into the deaerator comes from the demineralized water produced by the factory demineralized water device. The water temperature is 20°C and the temperature is normal when it is supplemented to the deaerator. However, the deaeration temperature of the deaerator needs to reach above 120°C to ensure the deaeration effect. Therefore, external heat is required to maintain the temperature of the deaerator. In some prior arts, steam is introduced from the boiler into the steam inlet of the deaerator to make the deaerator reach the deaeration temperature. In other prior arts, the deaerator is equipped with an electric heating component for heating it to the deaeration temperature.
[0003] In the prior art, when the boiler is in a shutdown state, the furnace temperature will drop to normal temperature. When starting emergently, the boiler needs to be heated up slowly until 1.2 MPa saturated steam is produced. It takes 60 minutes from cold start to steam production.
[0004] The information disclosed in this background art section is only intended to increase the understanding of the overall background of the present utility model, and should not be regarded as an admission or any form of implication that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model
[0005] Utility Model Objective: The technical problem to be solved by the present utility model is to provide a boiler device that can be quickly started in view of the deficiencies of the prior art.
[0006] To solve the above technical problem, the present utility model discloses a boiler device that can be quickly started. The device includes a deaerator, a boiler, a boiler steam pipeline, a check valve and a steam main pipeline; the water outlet of the deaerator is connected to the water inlet of the boiler, the steam outlet of the boiler is connected to the inlet of the check valve through the boiler steam pipeline, and the outlet of the check valve is connected to the inlet of the steam main pipeline; it further includes a bypass pipeline, the inlet end of the bypass pipeline is connected to the steam main pipeline, the outlet end is connected to the boiler steam pipeline, and a bypass regulating valve is arranged on the bypass pipeline.
[0007] In some embodiments, the device further includes a deaerator steam pipeline, the inlet end of the deaerator steam pipeline is connected to the boiler steam pipeline, and the outlet end is connected to the steam inlet of the deaerator.
[0008] In some embodiments, the device includes a boiler make-up water pump, the inlet of the boiler make-up water pump is connected to the water outlet of the deaerator, and the outlet of the boiler make-up water pump is connected to the water inlet of the boiler to realize the connection between the water outlet of the deaerator and the water inlet of the boiler.
[0009] In some embodiments, there are two or more boiler make-up pumps, and the two or more boiler make-up pumps are connected in parallel between the water outlet of the deaerator and the water inlet of the boiler.
[0010] In some embodiments, first maintenance cut-off valves are respectively arranged at the inlet and outlet of the boiler make-up pump; a second maintenance cut-off valve is also arranged on the deaerator steam pipeline; a third maintenance cut-off valve is also arranged at the inlet of the check valve.
[0011] In some embodiments, the water inlet of the deaerator is connected with a deaerator water supply pipeline, and a water supply control valve is arranged on the deaerator water supply pipeline.
[0012] In some embodiments, the device further includes a deaerator water supply main pipe. There are two or more deaerators, and the other ends of each deaerator water supply pipeline far away from the corresponding deaerator are connected in parallel to the deaerator water supply main pipe.
[0013] In some embodiments, a steam delivery valve is arranged at the steam outlet of the boiler.
[0014] In some embodiments, a steam supply main valve is arranged on the steam main pipeline.
[0015] In some embodiments, the connection point between the inlet end of the deaerator steam pipeline and the boiler steam pipeline and the connection point between the outlet end of the bypass pipeline and the boiler steam pipeline are located at the same position.
[0016] Beneficial effects:
[0017] 1. By adding a bypass pipeline with its inlet end connected to the steam main pipeline, its outlet end connected to the boiler steam pipeline, and a bypass regulating valve arranged thereon, when the boiler stops firing, the pressure of the steam main pipeline is about 1.0 MPa. The bypass regulating valve is adjusted to be slightly open, and the steam in the steam main pipeline is supplemented to the boiler steam pipeline along the bypass pipeline through the bypass regulating valve. The steam entering the boiler through the boiler steam pipeline ensures that the water temperature in the boiler furnace is about 80°C, so that rapid heating can be achieved during emergency startup, realizing hot startup and shortening the time required from startup to steam production.
[0018] 2. Further, it can be set that the steam inlet of the deaerator is connected to the boiler steam pipeline through the deaerator steam pipeline, that is, the auxiliary steam of the deaerator comes from the boiler. The steam in the steam main pipeline is supplemented to the boiler steam pipeline along the bypass pipeline through the bypass regulating valve, and is also supplemented to the deaerator steam pipeline. The steam entering the deaerator through the deaerator steam pipeline not only ensures the normal deaeration of the deaerator, but also raises the temperature of the deaerator to 80°C, shortening the overall startup time to 20 minutes and meeting the water temperature requirements for emergency startup. Description of the drawings
[0019] The following further specifically describes the present utility model in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present utility model will become clearer.
[0020] Figure 1 The structural schematic diagram of the boiler device capable of rapid startup provided for the first embodiment of the present utility model during normal use;
[0021] Figure 2 The structural schematic diagram of the boiler device capable of rapid startup provided for the first embodiment of the present utility model after the boiler is shut down;
[0022] Figure 3 The structural schematic diagram of the boiler device capable of rapid startup provided for the second embodiment of the present utility model.
[0023] The description of the reference numerals is as follows:
[0024] 1. Deaerator; 2. Boiler; 3. Boiler steam pipeline; 4. Check valve; 5. Steam main pipeline network; 6. Bypass pipeline; 7. Bypass regulating valve; 8. Deaerator steam pipeline; 9. Boiler makeup water pump; 10. First maintenance cut-off valve; 11. Second maintenance cut-off valve; 12. Third maintenance cut-off valve; 13. Deaerator water supply pipeline; 14. Water supply control valve; 15. Deaerator water supply main pipe; 16. Steam outlet valve; 17. Steam supply main valve. Specific embodiments
[0025] Embodiment 1
[0026] The water used to enter the deaerator comes from the demineralized water produced by the factory demineralized water device, with a water temperature of 20 °C and a temperature of normal temperature when replenished into the deaerator. The deaeration temperature of the deaerator needs to reach above 120 °C to ensure the deaeration effect, and external heat is required to maintain the temperature of the deaerator.
[0027] In the prior art, when the boiler is in a shutdown state, the furnace temperature will drop to normal temperature. During emergency startup, the boiler needs to be slowly heated until 1.2 MPa saturated steam is generated, and it takes 60 minutes to cold start to produce steam.
[0028] This embodiment discloses a boiler device capable of rapid startup. Refer to Figure 1 , which includes a deaerator 1, a boiler 2, a boiler steam pipeline 3, a check valve 4, and a steam main pipeline network 5. The water outlet of the deaerator 1 is connected to the water inlet of the boiler 2, the steam outlet of the boiler 2 is connected to the inlet of the check valve 4 through the boiler steam pipeline 3, and the outlet of the check valve 4 is connected to the inlet of the steam main pipeline network 5. It further includes a bypass pipeline 6, the inlet end of the bypass pipeline 6 is connected to the steam main pipeline network 5, the outlet end is connected to the boiler steam pipeline 3, and a bypass regulating valve 7 is provided on the bypass pipeline 6.
[0029] Specifically, the boiler 2 is a gas boiler.
[0030] Preferably, referring to Figure 1 , the steam inlet of the deaerator 1 is connected to the boiler steam pipeline 3 through the deaerator steam pipeline 8, that is, the auxiliary steam of the deaerator 1 comes from the boiler 2, which has lower cost. Specifically, the inlet end of the deaerator steam pipeline 8 is connected to the boiler steam pipeline 3, and the outlet end is connected to the steam inlet of the deaerator 1.
[0031] Referring to Figure 1 , during normal use, the bypass regulating valve 7 is in the off state. When the boiler 2 starts and is heated to the set temperature, the steam is sent to the steam main network 5 and the deaerator steam pipeline 8 through the boiler steam pipeline 3.
[0032] Referring to Figure 2 , after the boiler 2 stops firing, the pressure of the steam main network 5 is about 1.0 MPa. The bypass regulating valve 7 is adjusted to be slightly open, and the steam in the steam main network 5 is supplemented to the boiler steam pipeline 3 and the deaerator steam pipeline 8 along the bypass pipeline 6 through the bypass regulating valve 6. The steam entering the boiler 2 through the boiler steam pipeline 3 ensures that the temperature of the furnace water in the furnace of the boiler 2 is about 80°C. The steam entering the deaerator 1 through the deaerator steam pipeline 8 not only ensures the normal deaeration of the deaerator but also raises the temperature of the deaerator to 80°C, shortening the start-up time to 20 minutes and meeting the water temperature for emergency start-up.
[0033] Referring to Figure 1 , the boiler device includes a boiler make-up water pump 9. The inlet of the boiler make-up water pump 9 is connected to the outlet of the deaerator 1, and the outlet of the boiler make-up water pump 9 is connected to the inlet of the boiler 2 to realize the connection between the outlet of the deaerator 1 and the inlet of the boiler 2.
[0034] In this embodiment, the boiler make-up water pump 9 is used to pump the water deaerated by the deaerator 1 into the boiler 2.
[0035] Referring to Figure 1 , two boiler make-up water pumps 9 can be provided. The two boiler make-up water pumps 9 are connected in parallel between the outlet of the deaerator 1 and the inlet of the boiler 2. The operation of one of the boiler make-up water pumps 9 can meet the use, and the remaining one is idle for standby.
[0036] The number of the boiler make-up water pumps 9 is not limited to two, as long as there is an idle pump for standby.
[0037] [[ID=3??]]Referring to Figure 1 , the inlet of the deaerator 1 is connected with a deaerator water supply pipeline 13, and the deaerator water supply pipeline 13 is provided with a water supply control valve 14. The water supply control valve 14 is used to realize the controllable conduction and cut-off of the deaerator water supply pipeline 13.
[0038] Referring to Figure 1, a steam delivery valve 16 is provided at the steam outlet of the boiler 2. The steam delivery valve 16 is used to controllably open and close the steam outlet of the boiler 2.
[0039] See Figure 1 , a main steam supply valve 17 is provided on the main steam pipeline 5. The main steam supply valve 17 is used to controllably conduct and cut off the main steam pipeline 5.
[0040] Furthermore, for the convenience of maintenance, see Figure 1 , first maintenance cut-off valves 10 are respectively provided at the inlet and outlet of the boiler make-up water pump 9. When one of the boiler make-up water pumps 9 fails, the first maintenance cut-off valves 10 located at the inlet and outlet of the idle boiler make-up water pump 9 are opened, the other idle boiler make-up water pump 9 is started, and the first maintenance cut-off valves 10 located at the inlet and outlet of the faulty boiler make-up water pump 9 are closed, so that the faulty boiler make-up water pump 9 is transferred to the maintenance state. A second maintenance cut-off valve 11 is also provided on the deaerator steam pipeline 8. When the deaerator 1 fails, the steam is cut off by closing the second maintenance cut-off valve 11, so that the deaerator 1 is transferred to the maintenance state. A third maintenance cut-off valve 12 is also provided at the inlet of the check valve 4. The third maintenance cut-off valve 12 plays a cut-off role when the check valve 4 is to be repaired.
[0041] Embodiment 2
[0042] Different from Embodiment 1 where only one deaerator 1, boiler 2 and boiler make-up water pump 9 are respectively provided. See Figure 3 , in this embodiment, two deaerators 1 and boilers 2 are provided. An aggregate deaerator water supply pipe 15 is further included, and the other ends of each deaerator water supply pipeline 13 far from the corresponding deaerator 1 are connected in parallel to the aggregate deaerator water supply pipe 15. It should be understood that the number of boilers 2 is adapted to the number of deaerators 1, and they can be equal or not equal. The specific number can be selected according to actual production needs.
[0043] See Figure 3 , three boiler make-up water pumps 9 are provided, and the three boiler make-up water pumps 9 are connected in parallel between the water outlet of the deaerator 1 and the water inlet of the boiler 2. Two of the three boiler make-up water pumps 9 can work simultaneously to meet the use, and the remaining one is idle for standby.
[0044] The number of boiler make-up water pumps 9 is not limited to three, as long as there is a pump that can be idle for standby.
[0045] The present utility model provides an idea and method for a boiler device that can be quickly started. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. Each component not clearly defined in this embodiment can be implemented by using existing technologies.
Claims
1. A boiler device that can be quickly started, characterized in that, It includes a deaerator (1), a boiler (2), a boiler steam pipeline (3), a check valve (4), and a steam main network (5); the water outlet of the deaerator (1) is connected to the water inlet of the boiler (2), the steam outlet of the boiler (2) is connected to the inlet of the check valve (4) through the boiler steam pipeline (3), and the outlet of the check valve (4) is connected to the inlet of the steam main network (5); it also includes a bypass pipeline (6), the inlet end of the bypass pipeline (6) is connected to the steam main network (5), the outlet end is connected to the boiler steam pipeline (3), and a bypass regulating valve (7) is provided on the bypass pipeline (6).
2. The quickly startable boiler device according to claim 1, characterized in that, It also includes a deaerator steam pipeline (8), the inlet end of the deaerator steam pipeline (8) is connected to the boiler steam pipeline (3), and the outlet end is connected to the steam inlet of the deaerator (1).
3. The quickly startable boiler device according to claim 2, wherein It includes a boiler make-up water pump (9), the inlet of the boiler make-up water pump (9) is connected to the water outlet of the deaerator (1), and the outlet of the boiler make-up water pump (9) is connected to the water inlet of the boiler (2) to realize the connection between the water outlet of the deaerator (1) and the water inlet of the boiler (2).
4. The quickly startable boiler device according to claim 3, characterized in that, Two or more boiler make-up water pumps (9) are provided, and two or more boiler make-up water pumps (9) are connected in parallel between the water outlet of the deaerator (1) and the water inlet of the boiler (2).
5. The quickly startable boiler device according to claim 3, characterized in that, First maintenance cut-off valves (10) are respectively provided at the inlet and outlet of the boiler make-up water pump (9); a second maintenance cut-off valve (11) is also provided on the deaerator steam pipeline (8); a third maintenance cut-off valve (12) is also provided at the inlet of the check valve (4).
6. The quickly startable boiler device according to claim 1 or 2, characterized in that, The water inlet of the deaerator (1) is connected with a deaerator water supply pipeline (13), and a water supply control valve (14) is provided on the deaerator water supply pipeline (13).
7. The quickly startable boiler device according to claim 6, characterized in that, It also includes a deaerator water supply main pipe (15), two or more deaerators (1) are provided, and the other ends of each deaerator water supply pipeline (13) far from the corresponding deaerator (1) are connected in parallel to the deaerator water supply main pipe (15).
8. The quickly startable boiler device according to claim 1 or 2, characterized in that, A steam sending valve (16) is provided at the steam outlet of the boiler (2).
9. The quickly startable boiler device according to claim 1 or 2, characterized in that, A steam supply main valve (17) is provided on the steam main network (5).
10. The quickly startable boiler device according to claim 2, characterized in that, The connection point between the inlet end of the deaerator steam pipeline (8) and the boiler steam pipeline (3) and the connection point between the outlet end of the bypass pipeline (6) and the boiler steam pipeline (3) are located at the same position.