Steam turbine bearing thermotechnical measuring point purging and cooling device

Abstract

The invention discloses a turbine bearing thermotechnical measuring point purging cooling device, which belongs to the technical field of cooling devices, and comprises a cooling pipe, the side edge of the cooling pipe is provided with a branch pipe I, the side edge of the branch pipe I is provided with a branch pipe II, the side edge of the branch pipe II is provided with a branch pipe III, and the side edge of the branch pipe I and the side edge of the branch pipe II are connected with a pressure reduction filter valve. The cooling pipe is connected with the air pump, a manual ball valve is opened through manual screwing, gas in the cooling pipe enters the first branch pipe, the second branch pipe and the third branch pipe, the gas is subjected to filtration and pressure reduction through the pressure reduction filter valve, water vapor and oil dirt are filtered out, and a thermal control protection measuring point is prevented from being damaged; gas enters the purging cylinder, then is discharged from the gas outlet and is blown to the periphery of a detection point, and the detection probe is arranged in the middle of the detection port, so that the probe is conveniently cooled, the probe is prevented from being damaged by a high-temperature environment, the detection precision is prevented from being influenced, and long-time detection is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of cooling devices, and in particular relates to a thermal measuring point purge cooling device for a steam turbine bearing. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor with the blades to rotate and perform work externally. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power devices.

[0003] However, the ambient temperature at the thrust bearing of the turbine reaches over 100°C. The high temperature causes the measurement accuracy of the turbine speed, vibration and axial displacement measuring point probes to decrease, and the signal cable to age, affecting the safe operation of the unit. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a steam turbine bearing thermal measuring point purging and cooling device, which has the characteristics of good cooling effect, simple structure and convenient use.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a steam turbine bearing thermal measurement point purging and cooling device, comprising a cooling pipe, a branch pipe 1 is arranged on the side of the cooling pipe, a branch pipe 2 is arranged on the side of the branch pipe 1, a branch pipe 3 is arranged on the side of the branch pipe 2, a pressure reducing filter valve is connected to the sides of the branch pipe 1 and the branch pipe 2, and a purge assembly is connected to the air outlet of the branch pipe 3 and the pressure reducing filter valve.

[0006] Furthermore, the air inlet of the purge assembly is provided with a manual ball valve.

[0007] Furthermore, a sealing plug is screwed at the air outlet of the cooling pipe, and the air inlet of the cooling pipe is connected to an air pump.

[0008] Furthermore, the purge assembly includes a purge cylinder, an air outlet and an air vent, wherein a detection port is provided on the side of the purge cylinder, and an air outlet is provided on the surface of one end of the purge cylinder close to the detection port.

[0009] Furthermore, the air outlet holes are arranged around the surface of the purge cylinder, and the openings of the air outlet holes are inclined toward one side of the detection port.

[0010] Furthermore, a rubber ring is provided in the middle of the detection port.

[0011] Furthermore, a refrigeration assembly is provided at the air inlet end of the cooling tube, and the refrigeration assembly includes a box body, a mounting groove, a semiconductor refrigeration sheet, fins and air vents, wherein the air inlet end of the cooling tube is connected to the box body, air vents are provided at both ends of the box body, mounting grooves are provided around the surface of the box body, a semiconductor refrigeration sheet is provided in the middle of the mounting groove, and fins are provided inside the box body.

[0012] Furthermore, the fin is connected to the cooling end of the semiconductor refrigeration plate, and the fin adopts a copper structure.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention connects the cooling pipe with the air pump, manually twists and opens the manual ball valve, and the gas in the cooling pipe enters branch pipe 1, branch pipe 2 and branch pipe 3 respectively. The gas is filtered and decompressed through the pressure reducing filter valve to filter water vapor and oil pollution to prevent damage to the thermal control protection measuring point. The gas enters the purge cylinder and then is discharged from the air outlet to the surroundings of the detection point. The detection probe is placed in the middle of the detection port to facilitate cooling of the probe, avoid damage to the probe caused by high temperature environment, affect the detection accuracy, and facilitate long-term detection and use;

[0015] 2. The present invention sets a refrigeration component, the gas enters the box, the semiconductor refrigeration plate cools, and the gas is conducted into the box through the fins. The gas contacts the fins to reduce the gas temperature. The low-temperature gas enters each branch pipe and is then discharged from the air outlet, thereby improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the purge assembly of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the refrigeration assembly of the present invention;

[0019] In the figure: 1. cooling pipe; 2. branch pipe 1; 3. branch pipe 2; 4. sealing plug; 5. branch pipe 3; 6. manual ball valve; 7. purge assembly; 71. purge cylinder; 72. air outlet; 73. detection port; 74. rubber ring; 8. pressure reducing filter valve; 9. refrigeration assembly; 91. box body; 92. mounting groove; 93. semiconductor cooling plate; 94. fin; 95. vent. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1

[0022] See also Figure 1-3 The present invention provides the following technical solutions: A steam turbine bearing thermal measuring point purging cooling device, comprising a cooling pipe 1, a branch pipe 1 2 is arranged on the side of the cooling pipe 1, a branch pipe 2 3 is arranged on the side of the branch pipe 1 2, a branch pipe 3 5 is arranged on the side of the branch pipe 2 3, a pressure reducing filter valve 8 is connected to the sides of the branch pipe 1 2 and the branch pipe 2 3, and a purge assembly 7 is connected to the air outlets of the branch pipe 3 5 and the pressure reducing filter valve 8.

[0023] Furthermore, in the present invention, the air inlet of the purge assembly 7 is provided with a manual ball valve 6 .

[0024] By adopting the above technical solution, independent control is achieved to improve the convenience of use.

[0025] Furthermore, in the present invention, a sealing plug 4 is screwed at the air outlet of the cooling pipe 1, and the air inlet of the cooling pipe 1 is connected to an air pump.

[0026] By adopting the above technical solution, the assembly of different numbers of purge components 7 is facilitated to meet different usage requirements.

[0027] Further in the present invention, the purge assembly 7 includes a purge cylinder 71 , an air outlet 72 and an air outlet 72 , wherein a detection port 73 is provided on the side of the purge cylinder 71 , and an air outlet 72 is provided on one end surface of the purge cylinder 71 close to the detection port 73 .

[0028] By adopting the above technical solution, the gas enters the purge cylinder 71, and then is discharged from the air outlet 72 and blown to the surroundings of the detection point. The detection probe is placed in the middle of the detection port 73, which is convenient for cooling the probe, avoiding damage to the probe caused by high temperature environment and affecting the detection accuracy, and is convenient for long-term detection.

[0029] Further in the present invention, the air outlet holes 72 are arranged around the surface of the purge cylinder 71 , and the openings of the air outlet holes 72 are inclined toward the detection port 73 .

[0030] By adopting the above technical solution, it is convenient for gas to be blown from the gas outlet 72 to the surroundings of the detection point.

[0031] Furthermore, in the present invention, a rubber ring 74 is provided in the middle of the detection port 73 .

[0032] By adopting the above technical solution, heat is prevented from entering the purge cylinder 71, thereby improving the protection of the detection probe.

[0033] When the present embodiment is used, the device is installed at the position where detection is required, the cooling pipe 1 is connected to the air pump, the manual ball valve 6 is manually screwed open, and the gas in the cooling pipe 1 enters the branch pipe 1 2, the branch pipe 2 3 and the branch pipe 3 5 respectively. The gas is filtered and decompressed through the pressure reducing filter valve 8 to filter out water vapor and oil pollution to prevent damage to the thermal control protection measuring point. The gas enters the purge cylinder 71 and then is discharged from the air outlet 72 to blow around the detection point. The detection probe is placed in the middle of the detection port 73 to facilitate the cooling of the probe, avoid damage to the probe caused by the high temperature environment, and affect the detection accuracy, which is convenient for long-term detection and use.

[0034] Example 2

[0035] The difference between this embodiment and embodiment 1 is that a refrigeration assembly 9 is provided at the air inlet end of the cooling tube 1, and the refrigeration assembly 9 includes a box body 91, a mounting groove 92, a semiconductor refrigeration sheet 93, fins 94 and air vents 95, wherein the air inlet end of the cooling tube 1 is connected to the box body 91, air vents 95 are provided at both ends of the box body 91, mounting grooves 92 are provided around the surface of the box body 91, a semiconductor refrigeration sheet 93 is provided in the middle of the mounting groove 92, and fins 94 are provided inside the box body 91.

[0036] By adopting the above technical solution, the gas enters the box body 91, the semiconductor refrigeration plate 93 cools, and is conducted into the box body 91 through the fins 94. The gas contacts the fins 94 to reduce the temperature of the gas, and the low-temperature gas enters each branch pipe and is then discharged from the air outlet 72, thereby improving the cooling effect.

[0037] Further in the present invention, the fin 94 is connected to the cooling end of the semiconductor cooling plate 93, and the fin 94 is made of copper.

[0038] By adopting the above technical solution, the semiconductor refrigeration plate 93 is ensured to cool, and the gas is conducted into the box body 91 through the fins 94. The gas contacts the fins 94, so that the temperature of the gas is reduced.

[0039] When this embodiment is used, the gas enters the box body 91, the semiconductor refrigeration plate 93 cools the gas, and the gas is conducted into the box body 91 through the fins 94. The gas contacts the fins 94 to reduce the temperature of the gas. The low-temperature gas enters each branch pipe and is then discharged from the air outlet 72, thereby improving the cooling effect.

[0040] Working principle and use process of the present invention: When the present invention is used, the device is installed at the position where detection is required, the cooling tube 1 is connected to the air pump, the gas enters the box body 91, the semiconductor refrigeration plate 93 cools, and is conducted into the box body 91 through the fins 94. The gas contacts the fins 94 to reduce the temperature of the gas, and the manual ball valve 6 is manually screwed to open. The gas in the cooling tube 1 enters branch pipe 1 2, branch pipe 2 3 and branch pipe 3 5 respectively. The gas is filtered and reduced in pressure through the pressure reducing filter valve 8 to filter out water vapor and oil to prevent damage to the thermal control protection measuring point. The gas enters the purge cylinder 71 and is then discharged from the air outlet 72 and blown to the surroundings of the detection point. The detection probe is placed in the middle of the detection port 73 to facilitate cooling of the probe, avoid damage to the probe caused by high temperature environment, affect the detection accuracy, and facilitate long-term detection and use.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steam turbine bearing thermal measuring point purging and cooling device, comprising a cooling pipe (1), characterized in that: The cooling pipe (1) is provided with a branch pipe 1 (2) on its side, a branch pipe 2 (3) on its side, a branch pipe 3 (5) on its side, a pressure reducing filter valve (8) connected to the sides of the branch pipe 1 (2) and the branch pipe 2 (3), and the air outlets of the branch pipe 3 (5) and the pressure reducing filter valve (8) are both connected to a purge assembly (7).

2. A steam turbine bearing thermal measuring point purging and cooling device according to claim 1, characterized in that: The air inlet of the purge assembly (7) is provided with a manual ball valve (6).

3. A steam turbine bearing thermal measuring point purging and cooling device according to claim 1, characterized in that: A sealing plug (4) is screwed onto the air outlet of the cooling pipe (1), and the air inlet of the cooling pipe (1) is connected to an air pump.

4. A steam turbine bearing thermal measuring point purging and cooling device according to claim 1, characterized in that: The purge assembly (7) comprises a purge cylinder (71), an air outlet (72) and an air outlet (72), wherein a detection port (73) is arranged on the side of the purge cylinder (71), and an air outlet (72) is arranged on one end surface of the purge cylinder (71) close to the detection port (73).

5. A steam turbine bearing thermal measuring point purging and cooling device according to claim 4, characterized in that: The air outlet holes (72) are arranged around the surface of the purge cylinder (71), and the openings of the air outlet holes (72) are inclined toward one side of the detection port (73).

6. A steam turbine bearing thermal measuring point purging and cooling device according to claim 4, characterized in that: A rubber ring (74) is provided in the middle of the detection port (73).

7. The steam turbine bearing thermal measuring point purging and cooling device according to claim 1 is characterized in that: The air inlet end of the cooling tube (1) is provided with a refrigeration assembly (9), and the refrigeration assembly (9) comprises a box (91), a mounting groove (92), a semiconductor refrigeration sheet (93), fins (94) and air vents (95), wherein the air inlet end of the cooling tube (1) is connected to the box (91), the two ends of the box (91) are provided with air vents (95), the surface of the box (91) is provided with mounting grooves (92) around, the middle of the mounting grooves (92) is provided with a semiconductor refrigeration sheet (93), and the interior of the box (91) is provided with fins (94).

8. A steam turbine bearing thermal measuring point purging and cooling device according to claim 7, characterized in that: The fin (94) is connected to the cooling end of the semiconductor cooling plate (93), and the fin (94) is made of copper.

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