Labyrinth gland pressure regulating distributing valve actuator temperature reducing device

Abstract

The utility model discloses a sealing pressure adjustment distribution valve executor temperature reduction device belongs to steam turbine production technical field, including distribution valve body and executor, be provided with valve stem in distribution valve body, the valve stem is away from distribution valve body one end and is provided with connecting piece, the connecting piece is away from valve stem one end and is fixedly connected with the executor, the connecting piece side wall is provided with red copper thread heat dissipation sleeve pipe, distribution valve body and the side wall of executor all are set up with annular groove, the sliding connection of annular groove has the rotation ring, the rotation ring between two is equipped with a plurality of cleaning mechanism for cleaning red copper thread heat dissipation sleeve pipe. The application is through setting up red copper thread heat dissipation sleeve pipe and the matched cleaning mechanism, solved the electronic component, motor in the actuating mechanism because of high temperature damage, lead to the problem of adjustment distribution valve regulation failure, avoid because the main body equipment damage of adjustment failure simultaneously causes the serious equipment, economic loss of power generation system.

Description

Technical Field

[0001] This utility model belongs to the field of steam turbine manufacturing technology, and in particular relates to a desuperheating device for the actuator of a steam seal pressure regulating and distributing valve. Background Technology

[0002] The equalizing box steam seal pressure regulating and distribution valve plays an important role in collecting, distributing and balancing steam pressure in the steam turbine vacuum shaft seal system. It can guide the steam leakage from the front shaft seal to the rear shaft seal, preventing the steam leakage from the front shaft seal from entering the lubrication oil system, causing water in the oil and endangering equipment safety. It can also prevent the rear shaft seal from sucking in cold air, causing a drop in vacuum and a decrease in power generation efficiency. In the steam turbine system, the steam seal pressure regulating distribution valve is always in a high-pressure and high-temperature working environment. The heat of the high-temperature steam working medium is transferred along the distribution valve core to the valve stem, and then through the actuator's connecting parts to the electronic components and motor in the actuator. This can lead to damage to the electronic components and motor, causing the actuator to malfunction. Under these circumstances, the pressure in the equalizing tank changes, and the electronic actuator cannot immediately adjust the opening of the distribution valve, ultimately resulting in the failure of automatic regulation.

[0003] Therefore, we propose a de-cooling device for the actuator of the steam seal pressure regulating distribution valve to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the prior art by proposing a solution for a de-heating device for the actuator of a steam seal pressure regulating and distributing valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A de-icing device for the actuator of a steam seal pressure regulating distribution valve includes a distribution valve body and an actuator. A valve stem is provided in the distribution valve body. A connector is provided at the end of the valve stem away from the distribution valve body. The end of the connector away from the valve stem is fixedly connected to the actuator. A copper threaded heat dissipation sleeve is provided on the side wall of the connector. Both the distribution valve body and the actuator have annular grooves on their side walls. Rotating rings are slidably connected in the annular grooves. Several cleaning mechanisms for cleaning the copper threaded heat dissipation sleeve are installed between two rotating rings.

[0006] Preferably, the material of the copper threaded heat dissipation sleeve includes copper, silver, tin, zinc, lead, boron, nickel, iron, beryllium, sulfur, arsenic and bismuth, among which copper and silver have the highest composition, accounting for 99.9%.

[0007] Preferably, the cleaning mechanism includes a first support rod, a second support rod, a cleaning sponge, and two mounting rods. The first support rod is rotatably connected to the side wall of the rotating ring on the actuator, and the second support rod is rotatably connected to the side wall of the rotating ring on the distribution valve body. The first support rod and the second support rod are rotatably connected. One of the mounting rods is fixedly disposed on the side wall of the first support rod, and the other mounting rod is fixedly disposed on the side wall of the second support rod. The cleaning sponge is fixedly disposed between the two mounting rods, and the side wall of the cleaning sponge abuts against the side wall of the copper threaded heat dissipation sleeve.

[0008] Preferably, the cleaning sponge has a horizontal groove on its sidewall, and the horizontal groove is located on the sidewall of the cleaning sponge facing the copper threaded heat dissipation sleeve.

[0009] Preferably, a cleaning box is fixedly installed on the side wall of the first support rod, the cleaning box contains a medicine solution, and a cotton swab is installed on the side wall of the cleaning box. The cotton swab passes through the side wall of the first support rod and communicates with the inside of the cleaning box.

[0010] Preferably, the length of the cotton swab is less than the length of the mounting rod.

[0011] In summary, the technical effects and advantages of this utility model are as follows: By setting up a copper threaded heat dissipation sleeve and a matching cleaning mechanism, the heat dissipation area is increased, the heat dissipation efficiency is improved, and the transfer of heat to the actuator is effectively reduced, thereby achieving the purpose of cooling the actuator. This solves the problem that the electronic components and motors in the actuator are damaged by high temperature, which leads to the failure of the adjustment and distribution valve. At the same time, it avoids serious equipment and economic losses to the power generation system caused by the failure of adjustment leading to damage to the main equipment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 A magnified view of part A in the middle; Figure 3 This is a schematic diagram of the cleaning mechanism in this utility model.

[0013] In the diagram: 1. Distributor valve body; 2. Actuator; 3. Valve stem; 4. Connector; 5. Copper threaded heat dissipation sleeve; 6. Annular groove; 7. Rotating ring; 8. First support rod; 9. Second support rod; 10. Cleaning sponge; 11. Mounting rod; 12. Horizontal groove; 13. Cleaning box; 14. Cotton swab. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] like Figures 1-3 As shown, the desuperheating device for the actuator of the steam seal pressure regulating distribution valve includes a distribution valve body 1 and an actuator 2. A valve stem 3 is disposed within the distribution valve body 1. A connector 4 is disposed at the end of the valve stem 3 furthest from the distribution valve body 1. The end of the connector 4 furthest from the valve stem 3 is fixedly connected to the actuator 2. A copper threaded heat dissipation sleeve 5 is disposed on the side wall of the connector. The copper threaded heat dissipation sleeve 5 is made of copper, silver, tin, zinc, lead, boron, nickel, iron, beryllium, sulfur, arsenic, and bismuth, with copper and silver being the most abundant components, accounting for 99.9%. More specifically, the mass percentages of each component in the copper threaded heat dissipation sleeve 5 are as follows: Copper + Silver CuAg ≥ 99.97; Tin Sn≤0.002; Zinc (Zn) ≤ 0.003; Lead (Pb) ≤ 0.003; Boron (P) ≤ 0.002; Nickel (Ni) ≤ 0.002; Iron (Fe) ≤ 0.004 g; Beryllium Sb ≤ 0.002; Sulfur (S) ≤ 0.004; Arsenic (As) ≤ 0.002; Bismuth (Bi) ≤ 0.001; Oxygen (O) ≤ 0.002.

[0016] Both the distribution valve body 1 and the actuator 2 have annular grooves 6 on their side walls. Rotating rings 7 are slidably connected in the annular grooves 6. Several cleaning mechanisms for cleaning the copper threaded heat dissipation sleeves 5 are installed between the two rotating rings 7. Each cleaning mechanism includes a first support rod 8, a second support rod 9, a cleaning sponge 10, and two mounting rods 11. The first support rod 8 is rotatably connected to the side wall of the rotating ring 7 on the actuator 2, and the second support rod 9 is rotatably connected to the side wall of the rotating ring 7 on the distribution valve body 1. The first support rod 8 and the second support rod 9 are rotatably connected, and one of the mounting rods 11 is fixed. The first support rod 8 is mounted on the side wall, and the other mounting rod 11 is fixedly mounted on the side wall of the second support rod 9. The cleaning sponge 10 is fixedly mounted between the two mounting rods 11. The side wall of the cleaning sponge 10 abuts against the side wall of the copper threaded heat dissipation sleeve 5. When the actuator 2 drives the connecting piece 4 and the valve stem 3 to move, the first support rod 8 and the second support rod 9 will fold, which will cause the two mounting rods 11 to drive the cleaning sponge 10 to bend. The cleaning sponge 10, which was originally abutting against the copper threaded heat dissipation sleeve 5, will separate from it, so that the copper threaded heat dissipation sleeve 5 can dissipate heat.

[0017] The cleaning sponge 10 has a horizontal groove 12 on its side wall. The horizontal groove 12 is located on the side wall of the cleaning sponge 10 facing the copper threaded heat dissipation sleeve 5. The horizontal groove 12 facing the copper threaded heat dissipation sleeve 5 ensures that the cleaning sponge 10 will only bend towards the connection position between the first support rod 8 and the second support rod 9, so that the bent cleaning sponge 10 will not come into contact with the copper threaded heat dissipation sleeve 5, which facilitates its heat dissipation.

[0018] A cleaning box 13 is fixedly installed on the side wall of the first support rod 8. The cleaning box 13 contains a medicine solution. A cotton swab 14 is installed on the side wall of the cleaning box 13. The length of the cotton swab 14 is less than the length of the mounting rod 11. The cotton swab 14 passes through the side wall of the first support rod 8 and is connected to the inside of the cleaning box 13. When the cleaning sponge 10 is bent, the cotton swab 14 soaked in medicine solution can replenish the cleaning sponge 10, thereby facilitating the cleaning of the surface of the copper threaded heat dissipation sleeve 5 and thus enabling it to dissipate heat better.

[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A de-icing device for the actuator of a steam seal pressure regulating distribution valve, comprising a distribution valve body (1) and an actuator (2), characterized in that, The valve body (1) is provided with a valve stem (3). A connector (4) is provided at the end of the valve stem (3) away from the valve body (1). The connector (4) is fixedly connected to the actuator (2) at the end away from the valve stem (3). A copper threaded heat dissipation sleeve (5) is provided on the side wall of the connector. Both the valve body (1) and the actuator (2) have annular grooves (6) on their side walls. A rotating ring (7) is slidably connected in the annular groove (6). Several cleaning mechanisms for cleaning the copper threaded heat dissipation sleeve (5) are installed between the two rotating rings (7).

2. The desuperheating device for the actuator of the steam seal pressure regulating and distributing valve according to claim 1, characterized in that, The cleaning mechanism includes a first support rod (8), a second support rod (9), a cleaning sponge (10), and two mounting rods (11). The first support rod (8) is rotatably connected to the side wall of the rotating ring (7) on the actuator (2), and the second support rod (9) is rotatably connected to the side wall of the rotating ring (7) on the distribution valve body (1). The first support rod (8) and the second support rod (9) are rotatably connected. One of the mounting rods (11) is fixedly set on the side wall of the first support rod (8), and the other mounting rod (11) is fixedly set on the side wall of the second support rod (9). The cleaning sponge (10) is fixedly set between the two mounting rods (11), and the side wall of the cleaning sponge (10) abuts against the side wall of the copper threaded heat dissipation sleeve (5).

3. The desuperheating device for the actuator of the steam seal pressure regulating and distributing valve according to claim 2, characterized in that, The cleaning sponge (10) has a horizontal groove (12) on its side wall. The horizontal groove (12) is located on the side wall of the cleaning sponge (10) facing the copper threaded heat dissipation sleeve (5).

4. The desuperheating device for the actuator of the steam seal pressure regulating and distributing valve according to claim 3, characterized in that, A cleaning box (13) is fixedly installed on the side wall of the first support rod (8). The cleaning box (13) contains a medicine solution. A cotton swab (14) is installed on the side wall of the cleaning box (13). The cotton swab (14) passes through the side wall of the first support rod (8) and is connected to the inside of the cleaning box (13).

5. The desuperheating device for the actuator of the steam seal pressure regulating and distributing valve according to claim 4, characterized in that, The length of the cotton swab (14) is less than the length of the mounting rod (11).

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