Temperature element mounting assembly for steam turbine
By designing a temperature component installation component for a turbine including support rods, toothed gaskets, sleeves and flanges, the problem of thread clearance leakage between the temperature measuring sensor and the outer cylinder block of the turbine is solved, and better results are achieved Sealing effect and safety.
Patent Information
- Application Number
- CN202420343224.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-23
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-02-23
AI Technical Summary
The thread gap between the temperature measuring sensor and the outer cylinder in the turbine is prone to leakage of high-pressure steam, resulting in dielectric loss, damage to components and safety issues such as high-temperature and high-pressure medium leakage.
A temperature component mounting assembly for steam turbines is designed, including support rods, toothed gaskets, sleeves and flanges. The coupling gap between the support rods and flanges is sealed through the toothed gaskets, and the flange and steam turbines are The cylinder is fixed to avoid leakage of threaded connection gaps.
It effectively reduces the loss of steam medium, reduces the risk of high-temperature and high-pressure medium leakage injury, and solves the problem of leakage of thread gap between the temperature measuring sensor and the outer cylinder block of the turbine.
Smart Images
Figure CN222457528U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical seals, in particular to a temperature element mounting assembly for a steam turbine. Background Art
[0002] In order to monitor the operating status of the steam turbine, a temperature sensor is installed inside the steam turbine; the temperature sensor measures the steam temperature or cylinder wall temperature inside the turbine cylinder, and the temperature sensor needs to pass through the outer cylinder of the steam turbine from the pressurized inner cylinder interlayer; the temperature sensor is generally threadedly connected to the outer cylinder, and there is a threaded connection gap between the temperature sensor and the outer cylinder, and the threaded connection gap will leak pressurized steam medium, causing medium loss and damage to components. At the same time, there is a safety problem of high-temperature and high-pressure medium leakage causing injury. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model provides a temperature element installation assembly for a steam turbine, which solves the problem that the thread gap between the temperature sensor and the outer cylinder of the steam turbine is prone to leaking high-pressure steam.
[0004] According to an embodiment of the utility model, a temperature element installation assembly for a steam turbine includes a support rod, a toothed gasket, a sleeve and a flange; the flange is fixed to the end of the support rod, and the toothed gasket fits the contact surface of the flange; the sleeve is fixed to the support rod, the sleeve presses the toothed gasket, and the flange is fixed to the turbine cylinder body.
[0005] Compared with the prior art, the utility model has the following beneficial effects: during the installation process, the sleeve first fixes the toothed gasket on the support rod to form an installation whole, and then fixes the flange to the turbine cylinder body; during the fixing process with the turbine, no additional gaskets are added, avoiding the risk of small parts such as gaskets falling into the gaps of turbine components; split installation, high installation efficiency; the toothed gasket seals the joint gap between the support rod and the flange, the toothed gasket is suitable for high temperature and high pressure parts, has a good sealing effect, reduces steam medium loss, and reduces the risk of high temperature and high pressure medium leakage and injury; solves the problem of high pressure steam leakage in the thread gap between the temperature sensor and the outer cylinder body of the turbine.
[0006] Preferably, it also includes a hexagonal head, a sealing ring and a nut; one end of the hexagonal head is fixed to the axial end face of the support rod, and the nut is fixed to the other end of the hexagonal head; the hexagonal head and the nut are axially provided with a through hole, and the tail of the temperature element passes through the through hole; the sealing ring is sleeved on the tail of the temperature element, and the sealing ring is arranged between the hexagonal head and the nut.
[0007] The above technical solution has the advantages that the sealing ring seals the gap between the tail of the temperature element and the hexagonal head, thereby preventing high-pressure steam from leaking from the gap between the tail of the temperature element and the hexagonal head.
[0008] Preferably, a circular hole is opened in the axial middle part of the support rod, and a connecting hole is opened in the axial outer side of the support rod; the head of the temperature element is arranged in the circular hole, and the head of the temperature element extends out of the support rod.
[0009] The above technical solution has the advantages that the head of the temperature element is arranged in the support rod, and the support rod leads to an extension component at the tail of the temperature element, thereby preventing the lead-out part of the temperature element from being broken or bent during installation and use, thereby improving its reliability.
[0010] Preferably, the support rod is provided with an external thread, and the sleeve is a hexagonal nut; the flange and the hexagonal nut are both threadedly connected to the support rod.
[0011] The above technical solution has the advantages that the threaded connection between the flange, the hexagonal nut and the support rod is simple and convenient, and the cost of using the hexagonal nut is low.
[0012] Preferably, a threaded hole opposite to the connecting hole is formed at one end of the hexagonal head, and the support rod is connected to the hexagonal head bolt.
[0013] The above technical solution has the advantages that the support rod and the hexagonal bolt are connected and disassembled conveniently, the hexagonal head and the support rod are optimized, and the support rod and the toothed gasket are made of stainless steel.
[0014] The above technical solution has the advantages that stainless steel is corrosion-resistant and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic structural diagram of a temperature element installation assembly for a steam turbine according to an embodiment of the utility model;
[0016] Figure 2 for Figure 1 Section view of the middle AA plane. DETAILED DESCRIPTION
[0017] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] The reference numerals in the drawings of the specification include: support rod 1, round hole 101, connecting hole 102, hexagonal head 2, toothed gasket 3, hexagonal nut 4, flange 5, nut 6, sealing ring 7, temperature element 8, turbine cylinder 9, and toothed ring 10.
[0019] Example
[0020] like Figure 1 , Figure 2As shown, the embodiment of the utility model proposes a temperature element installation assembly for a steam turbine, which includes a support rod 1, a toothed gasket 3, a sleeve, a hexagonal head 2, a sealing ring 7, a nut 6 and a flange 5; the sleeve is a hexagonal nut 4; except for the sealing ring 7, all components are made of stainless steel; the support rod 1 is provided with an external thread, the flange 5 is threadedly connected to the end of the support rod 1, and the toothed gasket 3 is in contact with the flange 5; the hexagonal nut 4 is threadedly connected to the support rod 1, the hexagonal nut 4 presses the toothed gasket 3, the flange 5 is fixed to the turbine cylinder 9, and a toothed ring 10 is provided between the flange 5 and the turbine cylinder 9; the toothed gasket 3 seals the joint gap between the support rod 1 and the flange 5, and the toothed ring 10 seals the gap between the flange 5 and the turbine cylinder 9; the problem that the thread gap between the temperature sensor and the outer cylinder of the turbine is prone to leaking high-pressure steam is solved.
[0021] Two circular holes 101 are provided in the axial middle part of the support rod 1, and four connecting holes 102 are provided in the axial outer side of the support rod 1; a threaded hole opposite to the connecting hole 102 is provided at one end of the hexagonal head 2, the axial end face of the support rod 1 is aligned with one end of the hexagonal head 2, the support rod 1 is bolted to the hexagonal head 2, and the flange 5 and the hexagonal head 2 are arranged on the same side of the support rod 1; an external thread is provided at the other end of the hexagonal head 2, and the nut 6 is threadedly connected to the other end of the hexagonal head 2; the head of the temperature element 8 is divided into two probes, and the two probes are respectively arranged in the two circular holes 101, and the head of the temperature element 8 extends out of the support rod 1; the hexagonal head 2 and the nut 6 are axially provided with a through hole, and the tail of the temperature element 8 passes through the through hole; the sealing ring 7 is sleeved on the temperature element 8, and the sealing ring 7 is arranged between the hexagonal head 2 and the nut 6.
[0022] The installation process is:
[0023] 1. Pass the head of the temperature element 8 through the round hole 101, and the probe of the temperature element 8 is exposed from the support rod 1; reserve a suitable exposed length of the head of the temperature element 8 on the support rod 1, pass the tail of the temperature element 8 through the hexagonal head 2, and then fix the support rod 1 and the hexagonal head 2 with bolts.
[0024] 2. Put the sealing ring 7 on the tail of the temperature element 8, fix the nut 6 on the hexagonal head 2, and press the sealing ring 7 with the nut 6.
[0025] 3. Install the flange 5 on the end of the support rod 1, put on the toothed gasket 3, and tighten the hexagonal nut 4. The hexagonal nut 4 presses the toothed gasket 3.
[0026] 4. Put on the gear ring 10 and fix the flange 5 to the turbine cylinder 9 with bolts; during the installation process, if the exposed length of the temperature element 8 probe needs to be adjusted, you can loosen the nut 6 and adjust the exposed length of the temperature element 8 head.
[0027] 5. After the flange 5 is installed, tighten the nut 6 and the installation is completed.
[0028] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A temperature element mounting assembly for a steam turbine, characterized in that: It includes a support rod, a toothed gasket, a sleeve and a flange; the flange is fixed to the end of the support rod, and the toothed gasket fits the contact surface of the flange; the sleeve is fixed to the support rod, the sleeve presses the toothed gasket, and the flange is fixed to the turbine cylinder body.
2. A temperature element mounting assembly for a steam turbine according to claim 1, characterized in that: It also includes a hexagonal head, a sealing ring and a nut; one end of the hexagonal head is fixed to the axial end face of the support rod, and the nut is fixed to the other end of the hexagonal head; the hexagonal head and the nut are axially provided with a through hole, and the tail of the temperature element passes through the through hole; the sealing ring is sleeved on the tail of the temperature element, and the sealing ring is arranged between the hexagonal head and the nut.
3. A temperature element mounting assembly for a steam turbine according to claim 2, characterized in that: A circular hole is provided in the axial middle of the support rod, and a connecting hole is provided in the axial outer side of the support rod; the head of the temperature element is arranged in the circular hole, and the head of the temperature element extends out of the support rod.
4. A temperature element mounting assembly for a steam turbine according to claim 1, characterized in that: The support rod is provided with an external thread, and the sleeve is a hexagonal nut; the flange and the hexagonal nut are both threadedly connected to the support rod.
5. The temperature element mounting assembly for a steam turbine according to claim 3, characterized in that: One end of the hexagonal head is provided with a threaded hole opposite to the connecting hole, and the supporting rod is connected with the hexagonal head bolt.
6. A temperature element mounting assembly for a steam turbine according to any one of claims 1 to 5, characterized in that: The support rods and toothed washers are made of stainless steel.