Condenser energy-saving device

Abstract

The utility model relates to the technical field of condensers, and particularly discloses a condenser energy-saving device which comprises a barrel, a steam inlet chamber is arranged at the upper end of the barrel, a hot well is arranged at the lower end of the barrel, a tube plate is arranged at each of the front end and the rear end in the barrel, the tube plates are detachably connected with the barrel, and first positioning assemblies used for limiting deflection of the tube plates are arranged at the joints of the tube plates and the barrel. A plurality of cooling pipe bundles are arranged between the two pipe plates, baffle structures used for separating water flow are arranged on the sides, away from the cooling pipe bundles, of the pipe plates, and second positioning assemblies used for limiting deflection of the pipe plates are arranged on the baffle structures. The tube plate is detachably connected to the inner side of the barrel, when the tube plate is assembled and disassembled, the first positioning assembly on the tube plate and the second positioning assembly on the baffle structure can limit the tube plate at the same time, it is guaranteed that the tube plate cannot deviate when assembled, and connection is more stable.

Description

Technical Field

[0001] This utility model relates to the field of condenser technology, and in particular to a condenser energy-saving device. Background Technology

[0002] The function of a condenser is to condense the exhaust steam from the steam turbine into water, remove unsaturated gases, and establish and maintain a certain vacuum at the turbine exhaust port. In addition, it receives and condenses steam during bypass operation. The exhaust steam must be condensed into water to maintain system circulation. After the condenser condenses the steam into water, this condensate can be returned to the boiler as feedwater to be heated back into steam, achieving the recycling of the working fluid and thus energy saving. The condenser is equipped with a corresponding control system. By setting equipment parameters through the control system, real-time condenser cleanliness and efficiency can be provided. By predicting the condenser fouling rate and dynamically adjusting the cleaning cycle, heat exchange efficiency can be guaranteed, vacuum can be improved, and economic efficiency can be enhanced.

[0003] A typical condenser mainly consists of a neck, shell, water chamber, and hot well. The tube bundle is composed of smooth, straight tubes arranged at a slight incline to ensure that residual water in the cooling tubes is fully drained when draining from the cooling water side. The condenser cooling tubes are supported by diaphragms, with equal spacing between adjacent diaphragms. During operation, the diaphragms prevent vibration of the cooling tubes. The tube sheet isolates the steam and water sides of the condenser, and a reliable seal can be established between the tube sheet and the tube bundle through expansion and welding to prevent circulating water from entering the steam side. During welding, the tube sheet's installation position needs to be pre-fixed. Because the outer wall of the tube sheet and the inner wall of the condenser are mostly smooth curved surfaces, the tube sheet may shift during positioning, affecting the connection accuracy of the assembled equipment, which requires improvement. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a condenser energy-saving device to overcome the shortcomings of existing devices.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a condenser energy-saving device, including a cylinder, a steam inlet chamber at the upper end of the cylinder, a hot well at the lower end of the cylinder, and a condensate outlet at the bottom of the hot well;

[0006] A tube sheet is provided at each of the front and rear ends of the cylinder. The tube sheet is detachably connected to the cylinder. A first positioning component is provided at the connection between the tube sheet and the cylinder to limit the deflection of the tube sheet.

[0007] Several cooling tube bundles are provided between the two tube sheets. A baffle structure for separating water flow is provided on the side of the tube sheet away from the cooling tube bundles. A second positioning component is provided on the baffle structure for limiting the deflection of the tube sheet.

[0008] A further improvement is made in that the baffle structure includes a support plate and two baffles. Both the support plate and the baffles are fixedly connected to the side of the tube sheet away from the cooling tube bundle, and the two baffles are fixedly connected to the left and right sides of the support plate. The front and rear water chambers of the cylinder are vertically divided into two parts by the support plate, and the front and rear water chambers are further divided into an outlet chamber and an inlet chamber by the two baffles. The outlet chamber is connected to the circulating water drain pipe, and the inlet chamber is connected to the circulating water inlet pipe.

[0009] A further improvement is that the first positioning component includes multiple positioning blocks, which are fixedly connected to the tube sheet. Multiple second positioning grooves are provided inside the cylinder, and the second positioning grooves are slidably connected to the positioning blocks. A second connecting ear is provided on the side of the positioning block away from the tube sheet, and the second connecting ear is fixedly connected to the positioning block. A bolt hole is provided on the second connecting ear.

[0010] A further improvement is that the second positioning component includes a first connecting ear, which is fixedly connected to the upper and lower ends of the support plate. The first connecting ear is slidably connected to a first positioning groove opened on the inner side of the cylinder. A bolt hole is opened on the first connecting ear.

[0011] A further improvement is that: the outer side of the cylinder is provided with multiple sets of bolt fasteners that mate with the bolt holes, and each bolt fastener is evenly arranged in the circumferential direction of the cylinder axis.

[0012] A further improvement is that the bolt fastener includes a positioning bolt assembled on the outside of the cylinder, the positioning bolt is screwed into the cylinder and threadedly connected to the bolt hole, and a nut is provided on the outside of the positioning bolt, the nut being threadedly connected to the positioning bolt.

[0013] A further improvement is that: both the positioning bolt and the nut have washers on their opposite sides, with the washers fitted over the outside of the positioning bolt.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The tube sheet is detachably connected to the inside of the cylinder. When loading and unloading the tube sheet, the first positioning component on the tube sheet and the second positioning component on the baffle structure will simultaneously limit the tube sheet to ensure that the tube sheet will not shift during assembly, making the connection more stable. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural diagram of the cylindrical body of this utility model.

[0018] Figure 2This is a structural diagram of the tube sheet in this utility model.

[0019] Figure 3 This is a structural diagram of the cooling pipe bundle in this utility model.

[0020] Figure 4 This is a structural diagram of the support plate in this utility model.

[0021] Figure 5 This is a structural diagram of the positioning block in this utility model.

[0022] Figure 6 This is a structural diagram of the positioning bolt in this utility model.

[0023] The components are: 1. Shell; 2. Steam inlet chamber; 3. Hot well; 4. Condensate outlet; 5. Circulating water drain pipe; 6. Circulating water inlet pipe; 7. Positioning bolt; 8. Nut; 9. Tube sheet; 10. Cooling tube bundle; 11. Support plate; 12. First positioning groove; 13. Second positioning groove; 14. Baffle; 15. Positioning block; 16. First connecting ear; 17. Second connecting ear; 18. Bolt hole. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] according to Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, this embodiment proposes a condenser energy-saving device, including a cylinder 1, a steam inlet chamber 2 at the upper end of the cylinder 1, a hot well 3 at the lower end of the cylinder 1, and a condensate outlet 4 at the bottom of the hot well 3.

[0026] In the power plant, the cylinder 1 is axially installed after the steam turbine. The turbine's exhaust port and the inlet chamber 2 are connected by an expansion joint, which absorbs the thermal expansion between the turbine and the cylinder 1. The circulating water in the cylinder 1 flows laterally across the turbine's centerline, simplifying the arrangement of the circulating water inlet and outlet. The cylinder 1 is fixedly mounted on supports, and positional changes caused by support offset can be compensated for by adjusting the shims under the condenser. The hot well 3 is equipped with a condensate outlet 4 and a level gauge interface. The condensate, after being pressurized by a pump, is reused as boiler feedwater.

[0027] A tube sheet 9 is provided at each of the front and rear ends inside the cylinder 1. The tube sheet 9 is detachably connected to the cylinder 1. A first positioning component is provided at the connection between the tube sheet 9 and the cylinder 1 to limit the deflection of the tube sheet 9.

[0028] A plurality of cooling tube bundles 10 are provided between the two tube sheets 9. A baffle structure for separating water flow is provided on the side of the tube sheet 9 away from the cooling tube bundles 10. A second positioning component for limiting the deflection of the tube sheet 9 is provided on the baffle structure.

[0029] The cooling tube bundle 10 inside the cylinder 1 is fixed to the tube sheet 9 by expansion joints, supported in the middle by a partition. The cooling tube bundles 10 on both sides are arranged in a strip shape. The baffle structure divides the water chambers located at the front and rear ends of the cylinder 1. The tube sheet 9 is detachably connected to the inside of the cylinder 1. When installing or removing the tube sheet 9, the first positioning component on the tube sheet 9 and the second positioning component on the baffle structure will simultaneously limit the position of the tube sheet 9, ensuring that the tube sheet 9 will not shift during assembly and that the connection is more stable.

[0030] It is worth noting in detail that the baffle structure includes a support plate 11 and two baffles 14. Both the support plate 11 and the baffles 14 are fixedly connected to the side of the tube sheet 9 away from the cooling tube bundle 10. The two baffles 14 are fixedly connected to the left and right sides of the support plate 11. The front and rear water chambers of the cylinder 1 are vertically divided into two parts by the support plate 11. These chambers are further divided into an outlet chamber and an inlet chamber by the two baffles 14. The outlet chamber is connected to the circulating water drain pipe 5, and the inlet chamber is connected to the circulating water inlet pipe 6. The circulating water flows through the cylinder 1 in two separate paths. The circulating water reaches the front water chamber through the inlet, flows through the first set of cooling tube bundles 10, and then turns in the rear water chamber, flowing in the opposite direction through the second set of cooling tube bundles 10 before returning to the front water chamber and exiting through the outlet.

[0031] Regarding the first positioning component:

[0032] The first positioning component includes multiple positioning blocks 15, which are fixedly connected to the tube sheet 9. Multiple second positioning grooves 13 are provided on the inner side of the cylinder 1, and the second positioning grooves 13 are slidably connected to the positioning blocks 15. A second connecting ear 17 is provided on the side of the positioning block 15 away from the tube sheet 9, and the second connecting ear 17 is fixedly connected to the positioning block 15. A bolt hole 18 is provided on the second connecting ear 17. During assembly, the tube sheet 9 is pushed into the cylinder 1, and the positioning blocks 15 on the edge of the tube sheet 9 will engage with the second positioning grooves 13 on the inner side of the cylinder 1. The second positioning grooves 13, in cooperation with the positioning blocks 15, limit the movement of the tube sheet 9, preventing it from shifting during assembly.

[0033] Regarding the second positioning component:

[0034] The second positioning component includes a first connecting ear 16, which is fixedly connected to the upper and lower ends of the support plate 11. The first connecting ear 16 is slidably connected to a first positioning groove 12 formed inside the cylinder 1. A bolt hole 18 is provided on the first connecting ear 16. During assembly of the tube sheet 9, the first connecting ear 16 fixed to the upper and lower ends of the support plate 11 is also inserted into the first positioning groove 12 formed inside the cylinder 1. The first positioning groove 12, by cooperating with the first connecting ear 16, limits the positioning of the support plate 11 and the tube sheet 9, further improving the assembly stability of the tube sheet 9.

[0035] The tube sheet 9 is slidably disposed inside the cylinder 1 and is detachably connected to the cylinder 1 through a fastening structure. Specifically, the outer side of the cylinder 1 is provided with multiple sets of bolt fasteners that cooperate with the bolt holes 18, and each bolt fastener is evenly arranged in the circumferential direction of the axis of the cylinder 1.

[0036] Specifically, the bolt fasteners include positioning bolts 7 mounted on the outside of the cylinder 1. Positioning bolts 7 are screwed into the cylinder 1 and threaded into bolt holes 18. Nuts 8 are provided on the outside of positioning bolts 7, and the nuts 8 are threaded into the positioning bolts 7. By setting multiple sets of positioning bolts 7, the tube sheet 9 is ensured to be securely installed. It is important to note that during connection, a seal must be ensured at the connection point between the positioning bolts 7 and the cylinder 1.

[0037] In a preferred embodiment, both the positioning bolt 7 and the nut 8 have washers on their facing sides, with the washers fitted over the outside of the positioning bolt 7. These washers distribute the pressure between the cylinder 1, the first connecting lug 16, and the second connecting lug 17 on the contact surfaces of the positioning bolt 7 and the nut 8, thus protecting the cylinder 1.

[0038] How this application works:

[0039] In the power plant, the cylinder 1 is axially installed after the steam turbine. The turbine's exhaust port and the inlet chamber 2 are connected by an expansion joint. Circulating water in the cylinder 1 flows laterally across the turbine's centerline. The cooling tube bundles 10 inside the cylinder 1 are fixed to the tube sheet 9 by expansion joints, supported in the middle by a baffle. The cooling tube bundles 10 on both sides are arranged in a strip. A baffle structure divides the water chambers located at the front and rear ends of the cylinder 1. The tube sheet 9 is detachably connected to the inside of the cylinder 1. When installing or removing the tube sheet 9, the first positioning component on the tube sheet 9 and the second positioning component on the baffle structure simultaneously limit the position of the tube sheet 9, ensuring that the tube sheet 9 will not shift during assembly, resulting in a more stable connection.

[0040] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0041] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An energy-saving device for a condenser, comprising a cylinder (1), an inlet chamber (2) arranged at an upper end of the cylinder (1), a hot well (3) arranged at a lower end of the cylinder (1), and a condensate outlet (4) arranged at a bottom of the hot well (3), characterized in that: a tube plate (9) is arranged at each of front and rear ends of the cylinder (1), the tube plate (9) is detachably connected with the cylinder (1), and a first positioning assembly for limiting deflection of the tube plate (9) is arranged at a connection position of the tube plate (9) and the cylinder (1); a plurality of cooling tube bundles (10) are arranged between the two tube plates (9), a baffle structure for separating water flow is arranged at a side of the tube plate (9) away from the cooling tube bundles (10), and a second positioning assembly for limiting deflection of the tube plate (9) is arranged on the baffle structure. The baffle structure comprises a support plate (11) and two baffles (14), the support plate (11) and the baffles (14) are fixedly connected to the side of the tube plate (9) away from the cooling tube bundles (10), and the two baffles (14) are fixedly connected to left and right sides of the support plate (11). The first positioning assembly comprises a plurality of positioning blocks (15), the positioning blocks (15) are fixedly connected with the tube plate (9), a plurality of second positioning grooves (13) are formed in an inner side of the cylinder (1), the second positioning grooves (13) are slidably connected with the positioning blocks (15), a second connecting lug (17) is arranged at a side of the positioning block (15) away from the tube plate (9), the second connecting lug (17) is fixedly connected with the positioning block (15), and a bolt hole (18) is formed in the second connecting lug (17).

2. An energy saving device for a condenser according to claim 1, characterized in that: The second positioning assembly comprises a first connecting lug (16), the first connecting lug (16) is fixedly connected to upper and lower ends of the support plate (11), the first connecting lug (16) is slidably connected with a first positioning groove (12) formed in the inner side of the cylinder (1), and the bolt hole (18) is formed in the first connecting lug (16).

3. An energy saving device for a condenser as claimed in claim 1, wherein: An outer side of the cylinder (1) is provided with a plurality of bolt fastening members matched with the bolt hole (18), and each of the bolt fastening members is uniformly arranged in a circumferential direction of an axis of the cylinder (1).

4. An energy saving device for a condenser as claimed in claim 2, wherein: The bolt fastening member comprises a positioning bolt (7) assembled on the outer side of the cylinder (1), the positioning bolt (7) is screwed into the cylinder (1) and threadedly connected with the bolt hole (18), and a nut (8) is arranged on an outer side of the positioning bolt (7) and threadedly connected with the positioning bolt (7).

5. An energy saving device for a condenser according to any one of claims 3-4, characterized in that: Gaskets are arranged on opposite sides of the positioning bolt (7) and the nut (8), and the gaskets are sleeved on the outer side of the positioning bolt (7).

6. An energy saving device for a condenser as claimed in claim 5, wherein: ​ 7. An energy saving device for a condenser as claimed in claim 6, wherein: ​

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