Water supply system of water-cooled split valve of garbage boiler

Abstract

This utility model discloses a water-cooled diversion valve water supply system for a waste boiler, including a bed heat exchanger. The bed heat exchanger includes multiple heat exchanger inlet ports and multiple corresponding heat exchanger outlet ports. Each inlet port of the bed heat exchanger is connected to the corresponding outlet of the water-cooled diversion valve. The inlet port of the water-cooled diversion valve is connected to the main inlet of the diversion valve. The main inlet of the diversion valve is connected to a first inlet branch, a second inlet branch, and a third inlet branch. The inlet ends of the first and second inlet branches are connected to a cold slag water system, and the inlet end of the third inlet branch is connected to a demineralized water system. Each outlet port of the bed heat exchanger is connected to the main outlet of the bed heat exchanger. The main outlet of the bed heat exchanger is connected to the first and second outlet branches. The outlet end of the first outlet branch is connected to a deaerator system, and the outlet end of the second outlet branch is connected to a condensate collection tank system. Multiple water inlet branches ensure an uninterrupted supply of cooling water to the bed material heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of waste boiler technology, specifically to a water-cooled diversion valve water supply system for waste boilers, suitable for supplying cooling water to the bed heat exchanger of waste boilers. Background Technology

[0002] The rapid development of waste-to-energy boiler combustion technology in self-owned power plants has played a crucial role in optimizing energy allocation. During combustion, the bed material in the waste-to-energy boiler absorbs a large amount of heat, which is transferred to the cooler bed material or air via a bed material heat exchanger. This heat exchanger requires cooling water to maintain its normal operating temperature. If the cooling water supply to the bed material heat exchanger is abnormal, and no cooling water enters the water pipes, the heat exchanger may stop working. The internal cavity of the heat exchanger remains at a high temperature, and without circulating cooling water, this high temperature cannot be reduced, leading to coking and excessive corrosion of the bed material and its conveying pipes.

[0003] Therefore, ensuring a normal supply of cooling water to the bed heat exchanger is crucial to preventing coking. Existing bed heat exchangers have a single water supply structure and do not have multiple cooling water supply options. When the cooling water supply to the bed heat exchanger fails, it cannot be replenished in a timely manner. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems in the existing technology by providing a water-cooled diversion valve water supply system for waste boilers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A water-cooled diversion valve water supply system for a waste boiler includes a bed heat exchanger. The bed heat exchanger has multiple heat exchanger inlet ports and multiple corresponding heat exchanger outlet ports. Each inlet port of the bed heat exchanger is connected to a corresponding outlet of the water-cooled diversion valve. The inlet of the water-cooled diversion valve is connected to the main inlet of the diversion valve. The main inlet of the diversion valve is connected to a first inlet branch, a second inlet branch, and a third inlet branch. The inlet ends of the first and second inlet branches are connected to a cold slag water system, and the inlet end of the third inlet branch is connected to a demineralized water system. Each outlet of the bed heat exchanger is connected to the main outlet of the bed heat exchanger. The main outlet of the bed heat exchanger is connected to the first and second outlet branches. The outlet end of the first outlet branch is connected to a deaerator system, and the outlet end of the second outlet branch is connected to a condensate collection tank system.

[0007] The inlet end of the first inlet branch is connected to the cold slag water system, and the outlet end of the first inlet branch is connected to the inlet end of the main inlet of the diversion valve. Along the inlet direction of the first inlet branch, a first manual butterfly valve, a pneumatic regulating valve and a first check valve are sequentially installed on the first inlet branch. The inlet end of the second inlet branch is connected to the cold slag water system.

[0008] The outlet of the second inlet branch is connected to the inlet of the main inlet of the diversion valve. Along the inlet direction of the second inlet branch, a second manual butterfly valve, an electric regulating valve and a second check valve are sequentially installed on the second inlet branch. The inlet of the third inlet branch is connected to the demineralized water system.

[0009] The outlet of the third water inlet branch is connected to the inlet of the main water inlet of the diversion valve. A gate valve and a third check valve are sequentially installed along the water inlet direction of the third water inlet branch.

[0010] The inlet of the first outlet branch is connected to the main outlet of the bed heat exchanger. A manual gate valve and a third manual butterfly valve are installed on the first outlet branch. The outlet of the first outlet branch is connected to the deaerator system. The inlet of the second outlet branch is connected to the main outlet of the bed heat exchanger. A normally closed manual gate valve is installed on the second outlet branch. The outlet of the second outlet branch is connected to the condensate tank system.

[0011] The water-cooled diversion valve and the diversion valve electric control actuator are connected. A first pressure sensor is installed on the main water inlet of the diversion valve, and a second pressure sensor is installed on the main water outlet of the bed material heat exchanger. The diversion valve electric control actuator, the first pressure sensor, and the second pressure sensor are all connected to the control cabinet.

[0012] The pneumatic regulating valve is connected to the pneumatic regulating valve actuator, and the electric regulating valve is connected to the electric regulating valve actuator. The pneumatic regulating valve actuator and the electric regulating valve actuator are respectively connected to the control cabinet.

[0013] A first temperature sensor is installed on the main inlet of the diversion valve, and a second temperature sensor is installed on the main outlet of the bed heat exchanger. The first and second temperature sensors are respectively connected to the control cabinet.

[0014] A flow sensor is installed on the main outlet water line of the bed heat exchanger, and the flow sensor is connected to the control cabinet.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] 1. By setting up a water-cooled diversion valve to distribute the inlet water flow and control the pressure of different heat exchange branches of the bed material heat exchanger, the bed material heat exchanger can have a better cooling effect.

[0017] 2. By setting up multiple water supply branches, when one water supply branch fails, other water supply branches are activated, ensuring that the bed material heat exchanger always has a cooling water supply.

[0018] 3. Install check valves on each water supply branch to prevent cooling water from flowing back into other water supply branches when using a particular water supply branch.

[0019] 4. A first pressure sensor is installed on the main inlet of the diversion valve, and a second pressure sensor is installed on the main outlet of the bed heat exchanger to monitor the water pressure at the inlet of the diversion valve and the water pressure at the outlet of the bed heat exchanger, respectively.

[0020] 5. A first temperature sensor is installed on the main inlet of the diversion valve, and a second temperature sensor is installed on the main outlet of the bed heat exchanger to monitor the water temperature at the inlet of the diversion valve and the water temperature at the outlet of the bed heat exchanger, respectively.

[0021] 6. A flow sensor is installed on the main outlet water line of the bed heat exchanger to monitor the water flow rate out of the bed heat exchanger. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Among them: 1-1, First manual butterfly valve; 1-2, Pneumatic regulating valve; 1-3, First check valve; 1-5, Manual gate valve; 1-6, Third manual butterfly valve; 1-7, Water-cooled diverter valve; 1-8, Bed material heat exchanger; 2-1, Second manual butterfly valve; 2-2, Electric regulating valve; 2-3, Second check valve; 3-1, Gate valve; 3-2, Third check valve; 3-3. Normally closed manual gate valve; 4. Control cabinet; 4-1. Pneumatic regulating valve actuator; 4-2. Electric regulating valve actuator; 4-3. First pressure sensor; 4-4. First temperature sensor; 4-5. Flow sensor; 4-6. Second pressure sensor; 4-7. Second temperature sensor; 4-8. Electric control actuator for diversion valve; 5-1. First inlet branch; 5-2. Second inlet branch; 5-3. Third inlet branch; 5-4. Main inlet of diversion valve; 5-5. Main outlet of bed heat exchanger; 5-6. First outlet branch; 5-7. Second outlet branch. Detailed Implementation

[0024] To facilitate understanding and implementation of this utility model by those skilled in the art, the present utility model will be further described in detail below with reference to embodiments. It should be understood that the embodiments described herein are only for illustration and explanation of this utility model and are not intended to limit this utility model.

[0025] Example 1:

[0026] like Figure 1As shown, a water-cooled diversion valve water supply system for a waste boiler includes a bed heat exchanger 1-8. The bed heat exchanger 1-8 includes multiple sets of heat exchanger interfaces. Each set of heat exchanger interfaces includes a heat exchanger inlet interface and a corresponding heat exchanger outlet interface. In the bed heat exchanger 1-8, the heat exchanger inlet interface is connected to the corresponding heat exchange branch and the corresponding heat exchanger outlet interface. The bed heat exchanger 1-8 has multiple heat exchange branches, which improves the heat exchange effect. Each inlet interface of the bed heat exchanger 1-8 is connected to the corresponding outlet of the water-cooled diversion valve 1-7. The water-cooled diversion valve 1-7 is used for the distribution of inlet flow and pressure control of different heat exchange branches, ensuring that the cooling water entering the bed heat exchanger 1-8 is evenly distributed or distributed as needed in different heat exchange branches.

[0027] The inlet of the water-cooled diversion valve 1-7 is connected to the main inlet of the diversion valve 5-4. The main inlet of the diversion valve 5-4 is connected to the first inlet branch 5-1, the second inlet branch 5-2 and the third inlet branch 5-3 respectively.

[0028] The inlet end of the first inlet branch 5-1 is connected to the cold slag water system, and the outlet end of the first inlet branch 5-1 is connected to the inlet end of the diversion valve main inlet 5-4. Along the water inlet direction, the first inlet branch 5-1 is sequentially equipped with a first manual butterfly valve 1-1, a pneumatic regulating valve 1-2, and a first check valve 1-3. The inlet end of the second inlet branch 5-2 is connected to the cold slag water system, and the outlet end of the second inlet branch 5-2 is connected to the diversion valve main inlet 5-4. The inlet end of the -4 is connected, and along the water inlet direction, the second inlet branch 5-2 is sequentially equipped with a second manual butterfly valve 2-1, an electric regulating valve 2-2, and a second check valve 2-3; the inlet end of the third inlet branch 5-3 is connected to the demineralized water system, and the outlet end of the third inlet branch 5-3 is connected to the inlet end of the diversion valve main inlet 5-4. Along the water inlet direction, the third inlet branch 5-3 is sequentially equipped with a gate valve 3-1 and a third check valve 3-2. The first check valve 1-3 ensures that the water flow in the first inlet branch 5-1 can only flow in the inlet direction. The second check valve 2-3 ensures that the water flow in the second inlet branch 5-2 can only flow in the inlet direction. The third check valve 3-2 ensures that the water flow in the third inlet branch 5-3 can only flow in the inlet direction (the check valve is a one-way valve, flowing in the inlet direction of the inlet branch). The first inlet branch 5-1, the second inlet branch 5-2, and the third inlet branch 5-3 are connected in parallel. Therefore, if a water supply failure occurs in any one of the inlet branches, it will not affect the water supply of the other inlet branches.

[0029] Each outlet of the bed heat exchanger 1-8 is connected to the main outlet water line 5-5 of the bed heat exchanger. The main outlet water line 5-5 is connected to the first outlet branch line 5-6 and the second outlet branch line 5-7. The inlet of the first outlet branch line 5-6 is connected to the main outlet water line 5-5 of the bed heat exchanger. The first outlet branch line 5-6 is equipped with a manual gate valve 1-5 and a third manual butterfly valve 1-6. The outlet of the first outlet branch line 5-6 is connected to the deaerator system. The inlet of the second outlet branch line 5-7 is connected to the main outlet water line 5-5 of the bed heat exchanger. The second outlet branch line 5-7 is equipped with a normally closed manual gate valve 3-3. The outlet of the second outlet branch line 5-7 is connected to the condensate tank system.

[0030] In the cold slag water system, the cold slag water flows through the first inlet branch 5-1 or the second inlet branch 5-2, and then sequentially through the diversion valve inlet main line 5-4, the water-cooled diversion valve 1-7, the bed material heat exchanger 1-8, the bed material heat exchanger outlet main line and the first outlet branch 5-6, finally entering the deaerator system; in the demineralized water system, the demineralized water flows through the third inlet branch 5-3, and then sequentially through the diversion valve inlet main line 5-4, the water-cooled diversion valve 1-7, the bed material heat exchanger 1-8, the bed material heat exchanger outlet main line 5-5 and the second outlet branch 5-7, finally entering the condensate tank system.

[0031] In some embodiments, the water-cooled diversion valve 1-7 is connected to the diversion valve electric control actuator 4-8, which is also connected to the control cabinet 4. The control cabinet 4 regulates and controls the water-cooled diversion valve 1-7 via the diversion valve electric control actuator 4-8. A first pressure sensor 4-3 is installed on the diversion valve inlet main line 5-4, and a second pressure sensor 4-6 is installed on the bed heat exchanger outlet main line 5-5. The diversion valve electric control actuator 4-8, the first pressure sensor 4-3, and the second pressure sensor 4-6 are all connected to the control cabinet 4. The first pressure sensor 4-3 feeds back the water pressure of the diversion valve inlet main line 5-4 to the control cabinet 4, and the second pressure sensor 4-6 feeds back the water pressure of the bed heat exchanger outlet main line 5-5 to the control cabinet. The first pressure sensor 4-3 and the second pressure sensor 4-6 monitor the water pressure of the diversion valve inlet main line 5-4 and the bed heat exchanger outlet main line 5-5 in real time.

[0032] In some embodiments, pneumatic regulating valve 1-2 is connected to pneumatic regulating valve actuator 4-1, and electric regulating valve 2-2 is connected to electric regulating valve actuator 4-2. Both pneumatic regulating valve actuator 4-1 and electric regulating valve actuator 4-2 are connected to control cabinet 4. By controlling pneumatic regulating valve actuator 4-1 and electric regulating valve actuator 4-2 through control cabinet 4, the pneumatic regulating valve 1-2 and electric regulating valve 2-2 can be adjusted, thereby regulating the water flow of the first and second inlet branches.

[0033] In some embodiments, a first temperature sensor 4-4 is installed on the main inlet water line 5-4 of the diversion valve, and a second temperature sensor 4-7 is installed on the main outlet water line 5-5 of the bed heat exchanger. The first temperature sensor 4-4 and the second temperature sensor 4-7 are respectively connected to the control cabinet 4. The first temperature sensor 4-4 feeds back the temperature of the cooling water entering the water-cooled diversion valve 1-7 to the control cabinet 4, and the second temperature sensor 4-7 feeds back the temperature of the cooling water flowing out of the bed heat exchanger 1-8 to the control cabinet 4, thereby realizing real-time monitoring of the temperature of the cooling water flowing into and out of the bed heat exchanger 1-8.

[0034] In some embodiments, a flow sensor 4-5 is installed on the main outlet water line 5-5 of the bed heat exchanger, and the flow sensor 4-5 is connected to the control cabinet 4. The flow sensor 4-5 feeds back the flow rate of the main outlet water line 5-5 of the bed heat exchanger to the control cabinet 4, and monitors the flow rate of the main outlet water line 5-5 of the bed heat exchanger in real time.

[0035] In use, this utility model first closes the second manual butterfly valve 2-1, the electric regulating valve 2-2, the gate valve 3-1, and the normally closed manual gate valve 3-3, and then opens the first manual butterfly valve 1-1, the pneumatic regulating valve 1-2, the manual gate valve 1-5, and the third manual butterfly valve 1-6. The cold slag water in the cold slag water system serves as cooling water, flowing through the first inlet branch 5-1, the main inlet branch of the diversion valve 5-4, the water-cooled diversion valve 1-7, the bed heat exchanger 1-8, the main outlet branch of the bed heat exchanger 5-5, and the first outlet branch 5-6, finally entering the deaerator system.

[0036] When the water supply of the first inlet branch 5-1 fails, the first manual butterfly valve 1-1 and the pneumatic regulating valve 1-2 are closed, and the second manual butterfly valve 2-1 and the electric regulating valve 2-2 are opened. The cold slag water flows through the second inlet branch 5-2, the main inlet branch of the diversion valve 5-4, the water-cooled diversion valve 1-7, the bed heat exchanger 1-8, the main outlet branch of the bed heat exchanger 5-5, and the first outlet branch 5-6, and finally enters the deaerator system.

[0037] When the cold slag water system (which supplies water to the cold slag machine) malfunctions and neither the first inlet branch 5-1 nor the second inlet branch 5-2 can supply water, close the first manual butterfly valve 1-1 and the pneumatic regulating valve 1-2, close the second manual butterfly valve 2-1 and the electric regulating valve 2-2, close the manual gate valve 1-5 and the third manual butterfly valve 1-6, and open the gate valve 3-1 and the normally closed manual gate valve 3-3. The demineralized water in the demineralized water system serves as emergency backup cooling water, flowing through the third inlet branch 5-3, the main inlet branch of the diversion valve 5-4, the water-cooled diversion valve 1-7, the bed heat exchanger 1-8, the main outlet branch of the bed heat exchanger 5-5, the second outlet branch 5-7, and finally into the condensate drain system.

[0038] Since the first water inlet branch 5-1, the second water inlet branch 5-2 and the third water inlet branch 5-3 are respectively equipped with a first check valve 1-3, a second check valve 2-3 and a third check valve 3-2, when the first water inlet branch, the second water inlet branch and the third water inlet branch supply water respectively, and the check valve is a one-way flow valve, the cooling water of the water supply branch currently supplying water will not flow back into other water supply branches.

[0039] During use, the first and second water inlet branches can be kept open, while the third water inlet branch can be kept closed as a backup cooling water source.

[0040] This invention, by setting up multiple water inlet branches, can activate other water supply branches when one water supply branch fails, thus ensuring the cooling water supply to the bed material heat exchanger and effectively solving the problem of high-temperature coking in the bed material heat exchanger when the water supply system malfunctions.

[0041] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A water supply system of a water-cooled split valve of a waste boiler, comprising a bed material heat exchanger (1-8), the bed material heat exchanger (1-8) comprising a plurality of heat exchanger water inlet interfaces and a plurality of corresponding heat exchanger water outlet interfaces, characterized in that, Each inlet of the bed heat exchanger (1-8) is connected to the corresponding outlet of the water-cooled diversion valve (1-7). The inlet of the water-cooled diversion valve (1-7) is connected to the main inlet line (5-4) of the diversion valve. The main inlet line (5-4) of the diversion valve is connected to the first inlet branch (5-1), the second inlet branch (5-2), and the third inlet branch (5-3), respectively. The inlet ends of the first inlet branch (5-1) and the second inlet branch (5-2) are connected to the cold slag, respectively. The water system is connected, with the inlet end of the third inlet branch (5-3) connected to the demineralized water system; each outlet of the bed heat exchanger (1-8) is connected to the main outlet branch (5-5) of the bed heat exchanger, the main outlet branch (5-5) of the bed heat exchanger is connected to the first outlet branch (5-6) and the second outlet branch (5-7), the outlet end of the first outlet branch (5-6) is connected to the deaerator system, and the outlet end of the second outlet branch (5-7) is connected to the condensate tank system.

2. A water supply system for a water cooled diverter valve of a waste boiler according to claim 1, characterized in that The inlet end of the first inlet branch (5-1) is connected to the cold slag water system, and the outlet end of the first inlet branch (5-1) is connected to the inlet end of the diversion valve main inlet (5-4). Along the inlet direction of the first inlet branch (5-1), a first manual butterfly valve (1-1), a pneumatic regulating valve (1-2), and a first check valve (1-3) are sequentially installed on the first inlet branch. The inlet end of the second inlet branch (5-2) is connected to the cold slag water system.

3. A water supply system for a water cooled diverter valve of a waste boiler according to claim 2, characterized in that The outlet of the second inlet branch (5-2) is connected to the inlet of the main inlet of the diversion valve (5-4). Along the inlet direction of the second inlet branch (5-2), a second manual butterfly valve (2-1), an electric regulating valve (2-2), and a second check valve (2-3) are sequentially installed on the second inlet branch (5-2). The inlet of the third inlet branch (5-3) is connected to the demineralized water system.

4. The water-cooled diversion valve water supply system for a waste boiler according to claim 3, characterized in that, The outlet of the third water inlet branch (5-3) is connected to the inlet of the main water inlet of the diversion valve. Along the water inlet direction of the third water inlet branch (5-3), a gate valve (3-1) and a third check valve (3-2) are installed in sequence on the third water inlet branch (5-3).

5. A water supply system for a water cooled diverter valve of a waste boiler according to claim 4, characterized in that The inlet of the first outlet branch (5-6) is connected to the main outlet of the bed heat exchanger (5-5). The first outlet branch (5-6) is equipped with a manual gate valve (1-5) and a third manual butterfly valve (1-6). The outlet of the first outlet branch (5-6) is connected to the deaerator system. The inlet of the second outlet branch (5-7) is connected to the main outlet of the bed heat exchanger (5-5). The second outlet branch (5-7) is equipped with a normally closed manual gate valve (3-3). The outlet of the second outlet branch (5-7) is connected to the condensate tank system.

6. A water-cooled diversion valve water supply system for a waste boiler according to claim 5, characterized in that, The water-cooled diversion valve (1-7) and the diversion valve electric control actuator (4-8) are connected. A first pressure sensor (4-3) is installed on the diversion valve inlet main line (5-4), and a second pressure sensor (4-6) is installed on the bed material heat exchanger outlet main line (5-5). The diversion valve electric control actuator (4-8), the first pressure sensor (4-3) and the second pressure sensor (4-6) are all connected to the control cabinet (4).

7. A water-cooled diversion valve water supply system for a waste boiler according to claim 6, characterized in that, The pneumatic regulating valve (1-2) and the pneumatic regulating valve actuator (4-1) are connected, the electric regulating valve (2-2) and the electric regulating valve actuator (4-2) are connected, and the pneumatic regulating valve actuator (4-1) and the electric regulating valve actuator (4-2) are respectively connected to the control cabinet (4).

8. A water supply system for a water cooled diverter valve of a waste boiler according to claim 7, characterized in that A first temperature sensor (4-4) is installed on the main inlet water line (5-4) of the diversion valve, and a second temperature sensor (4-7) is installed on the main outlet water line of the bed heat exchanger. The first temperature sensor (4-4) and the second temperature sensor (4-7) are respectively connected to the control cabinet (4).

9. A water supply system for a water cooled diverter valve of a waste boiler according to claim 8, characterized in that A flow sensor (4-5) is installed on the main outlet water line (5-5) of the bed heat exchanger, and the flow sensor (4-5) is connected to the control cabinet (4).

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