Steam turbine steam temperature early warning device
By designing a steam temperature warning device for the steam turbine including a fixed sleeve, a thermocouple middle part, an extension rod, a rotating handle and a sealing block, the problem of inconvenient adjustment of the probe extension distance and poor sealing properties is solved, and the flexible adjustment of the probe and good sealing performance are achieved.
Patent Information
- Application Number
- CN202422023196.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In the existing steam temperature detection equipment of steam turbines, the distance between the thermocouple probes extending into the detection pipeline is inconvenient to adjust, resulting in poor sealing and poor airtightness.
A steam temperature warning device for steam turbine is designed, using threaded connection between the fixed sleeve and the thermocouple middle part, combined with the structure of the extension rod, rotating handle and sealing block to achieve flexible adjustment of the probe and good sealing performance.
Through the design of this device, the extension length of the temperature detection probe can be effectively adjusted, the sealing performance and airtightness are improved, and the accuracy and reliability of steam temperature detection are ensured.
Smart Images
Figure CN222951856U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of steam turbine steam temperature detection equipment, in particular to a steam turbine steam temperature early warning device. Background Art
[0002] The steam temperature of a steam turbine is usually detected by a thermocouple. The thermocouple is composed of two different metal wires. When they come into contact with different temperatures, a voltage change will be generated. By measuring this voltage, the temperature can be inferred. The detection result is fed back to the controller, which converts it into an auditory or visual form to remind people that the temperature is too high. Therefore, the equipment needs to detect the accuracy of the steam of the steam turbine to play a warning effect.
[0003] Currently, thermocouple probes are directly inserted into steam pipes for detection. Currently, the distance that the thermocouple probes extend into the detection pipe is not easy to adjust. The distance is adjusted by adding or reducing gaskets. Adding gaskets results in poor sealing and thus poor air tightness.
[0004] Therefore, the utility model designs a steam turbine steam temperature early warning device to solve the technical problems existing in the prior art. Utility Model Content
[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a steam turbine steam temperature early warning device to solve the above-mentioned technical problems.
[0006] The solution adopted by the utility model is: a steam turbine steam temperature early warning device, including a steam turbine steam pipeline and a detection pipeline, characterized in that:
[0007] The steam turbine steam pipe is provided with a detection pipe, and the inner wall of the detection pipe is threadedly connected with a fixed sleeve;
[0008] The fixed sleeve is internally threadedly connected with a middle part of a thermocouple, one end of the middle part of the thermocouple is fixedly connected with a temperature detection probe located in a steam pipe of a steam turbine, and the other end is fixedly connected with an extension rod;
[0009] One end of the extension rod is fixedly connected with a rotating handle, the extension rod is provided with a sliding groove, a sealing block matched with the fixed sleeve is slidably connected in the sliding groove, and a guide rod slidably connected with the adjusting handle is provided on the sealing block;
[0010] A pulling handle is arranged at one end of the guide rod, and a receiving groove cooperating with the pulling handle is arranged on the rotating handle.
[0011] Preferably, an outer sealing ring is provided between the fixed sleeve and the detection pipeline.
[0012] Preferably, an internal sealing ring cooperating with the probe is provided inside the detection pipeline.
[0013] Preferably, the storage slot and the pulling handle are magnetically attracted to each other.
[0014] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is one of the three-dimensional view angles of the present utility model.
[0016] Figure 2 It is one of the perspective views of the stereogram section of the present utility model.
[0017] Figure 3 This is the second perspective of the three-dimensional cross-sectional view of the present invention.
[0018] Figure numerals: 1. steam pipe of steam turbine; 2. detection pipe; 3. fixed sleeve; 4. middle part of thermocouple; 5. temperature detection probe; 6. extension rod; 7. rotating handle; 8. sliding groove; 9. sealing block; 10. guide rod; 11. pulling handle; 12. storage groove; 13. outer sealing ring; 14. inner sealing ring. DETAILED DESCRIPTION
[0019] The above and other technical contents, features and functions of the present invention are described in detail below with reference to the attached Figure 1-3 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.
[0020] Various exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.
[0021] Embodiment 1, a steam turbine steam temperature early warning device, comprising a steam turbine steam pipe 1 and a detection pipe 2, characterized in that:
[0022] The steam turbine steam pipe 1 is provided with a detection pipe 2, and the inner wall of the detection pipe 2 is threadedly connected with a fixed sleeve 3;
[0023] The fixed sleeve 3 is internally threadedly connected with a thermocouple middle part 4, one end of the thermocouple middle part 4 is fixedly connected with a temperature detection probe 5 located in the steam pipe 1 of the steam turbine, and the other end is fixedly connected with an extension rod 6;
[0024] One end of the extension rod 6 is fixedly connected with a rotating handle 7, and the extension rod 6 is provided with a sliding groove 8, in which a sealing block 9 cooperating with the fixed sleeve 3 is slidably connected, and the sealing block 9 is provided with a guide rod 10 slidably connected with the adjustment handle;
[0025] A pulling handle 11 is provided at one end of the guide rod 10, and a receiving groove 12 cooperating with the pulling handle 11 is provided on the rotating handle 7;
[0026] Furthermore, an outer sealing ring 13 is provided between the fixed sleeve 3 and the detection pipe 2;
[0027] Furthermore, an internal sealing ring 14 cooperating with the probe is provided inside the detection pipe 2 .
[0028] Furthermore, the storage slot 12 and the pulling handle 11 are magnetically attracted to each other.
[0029] When in use, first screw the fixed sleeve 3 into the detection pipe 2. An outer sealing ring 13 is provided between the fixed sleeve 3 and the detection pipe 2 to ensure the sealing and prevent steam leakage. A hexagonal nut is provided on the fixed sleeve to facilitate tightening with a tool;
[0030] After the fixed sleeve 3 is screwed into the detection pipe 2, the middle part 4 of the thermocouple is screwed into the fixed sleeve 3, the middle part 4 of the thermocouple is threadedly connected to the inner wall of the fixed sleeve 3, and the temperature detection probe 5 passes through the internal sealing ring 14. The hole in the middle of the internal sealing ring 14 cooperates with the temperature detection probe 5, and under the action of the internal sealing ring 14, the sealing performance is improved;
[0031] By rotating the handle 7, the extension rod 6 can be driven to rotate. Before the rotating handle 7 is actuated, the pull handle 11 is disengaged from the receiving groove 12. Under the action of the guide rod 10, the sealing block 9 moves along the sliding groove 8 of the extension rod 6, so that the sealing block 9 does not cooperate with the inner wall of the fixed sleeve 3. At this time, by rotating the handle 7, the insertion length of the temperature detection probe 5 inside the steam pipe 1 of the steam turbine can be adjusted, which is convenient for adjustment. After adjusting to a suitable position, the handle 11 is pressed and pulled into the receiving groove 12, so that the sealing block 9 moves along the sliding groove 8 into the inner wall of the fixed sleeve 3. The sealing block 9 is made of rubber material and has good elastic deformation, which is convenient for inserting into the fixed sleeve 3 and has good sealing performance, thereby further improving the sealing performance of the equipment.
[0032] The above description is only for illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various variations that conform to the concept of the present invention are within the protection scope of the present invention.
Claims
1. A steam turbine steam temperature early warning device, comprising a steam turbine steam pipeline (1) and a detection pipeline (2), characterized in that: The steam turbine steam pipe (1) is provided with a detection pipe (2), and the inner wall of the detection pipe (2) is threadedly connected with a fixed sleeve (3); The fixed sleeve (3) is internally threadedly connected to a thermocouple middle part (4); one end of the thermocouple middle part (4) is fixedly connected to a temperature detection probe (5) located in the steam pipeline (1) of the steam turbine, and the other end is fixedly connected to an extension rod (6); One end of the extension rod (6) is fixedly connected to a rotating handle (7), the extension rod (6) is provided with a sliding groove (8), a sealing block (9) matched with the fixed sleeve (3) is slidably connected in the sliding groove (8), and a guide rod (10) slidably connected to the adjusting handle is provided on the sealing block (9); A pulling handle (11) is provided at one end of the guide rod (10), and a receiving groove (12) cooperating with the pulling handle (11) is provided on the rotating handle (7).
2. A steam turbine steam temperature early warning device according to claim 1, characterized in that: An outer sealing ring (13) is provided between the fixed sleeve (3) and the detection pipeline (2).
3. A steam turbine steam temperature early warning device according to claim 1, characterized in that: An internal sealing ring (14) is provided inside the detection pipe (2) and cooperates with the temperature detection probe (5).
4. A steam turbine steam temperature early warning device according to claim 1, characterized in that: The storage slot (12) and the pulling handle (11) are magnetically attracted to each other.