Sampling tube supporting device for measuring vacuum degree of condenser

Abstract

The utility model belongs to the technical field of curtain wall installation, and particularly relates to a sampling pipe supporting device for measuring the vacuum degree of a condenser, a condenser throat part is provided with an installation hole, a first sampling pipeline is fixedly connected in the installation hole, an auxiliary plate is arranged on the inner side wall of the condenser throat part, and a second sampling pipeline is fixedly connected in the auxiliary plate. A second sampling pipeline is hinged to the auxiliary plate; a telescopic pipeline is arranged between the first sampling pipeline and the second sampling pipeline, and a mesh cage probe is arranged at the front end of the second sampling pipeline; a telescopic rod is hinged between the second sampling pipeline and the auxiliary plate; a collecting pipe is arranged at one end of the first sampling pipeline, a plurality of groups of multi-point sampling pipelines are arranged on the side wall of the collecting pipe at intervals, and a vacuum transmitter is arranged at the bottom of the collecting pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of curtain wall installation, in particular to a sampling tube supporting device for measuring the vacuum degree of a condenser. Background Art

[0002] The performance of the condenser, a large or medium-sized heat exchanger in thermal power plants, directly impacts the safety, reliability, and economy of the entire steam turbine unit. During normal condenser operation, turbine exhaust steam suddenly condenses into water within the condenser, causing a sharp decrease in its specific volume and resulting in a vacuum. Condenser vacuum not only reflects condenser performance but is also a key indicator of the safe, economical, and stable operation of large or medium-sized steam turbine units. However, in actual operation, condenser vacuum can decrease due to factors such as insufficient cooling tower water flow, elevated water temperature, and scaling of the condenser heat exchange tubes. This can increase condenser exhaust pressure and temperature, leading to a series of problems such as increased turbine axial thrust and overload of the last-stage blades. Therefore, accurate and reliable condenser vacuum measurement is crucial.

[0003] During sampling, the vacuum gas inside the condenser first enters the sampling pipe through the air hole of the sampling probe. At the same time, the moisture in the vacuum gas will come into contact with the sampling pipe and condense into droplets. Since the sampling pipe is tilted and forms a certain angle with the vertical plane of the condenser, when the droplets are formed inside the hollow pipe, they will flow back into the condenser due to the tilt of the sampling hollow pipe.

[0004] Currently, the sampling tube is fixed and welded to the throat of the condenser through a connecting plate. When the sampling tube is not properly positioned and water accumulation or other problems occur, the sampling tube can only be re-welded on the inner wall of the condenser. The angle of the sampling tube is not easy to adjust.

[0005] Therefore, the utility model designs a sampling tube supporting device for measuring the vacuum degree of a condenser to solve the technical problems existing in the prior art. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a sampling tube support device for measuring the vacuum degree of a condenser, which solves the above-mentioned technical problems.

[0007] The solution adopted by the utility model is: a sampling tube support device for measuring the vacuum degree of a condenser, comprising a condenser throat, a first sampling tube and a second sampling tube, characterized in that:

[0008] The throat of the condenser is provided with a mounting hole, a first sampling pipe is fixedly connected in the mounting hole, an auxiliary plate is provided on the inner side wall of the throat of the condenser, and a second sampling pipe is hinged on the auxiliary plate;

[0009] A retractable pipe is provided between the first sampling pipe and the second sampling pipe, and a mesh cage probe is provided at the front end of the second sampling pipe;

[0010] A telescopic rod is hinged between the second sampling pipe and the auxiliary plate;

[0011] One end of the first sampling pipe is provided with a manifold, and a plurality of multi-point sampling pipes are arranged at intervals on the side wall of the manifold, and a vacuum transmitter is provided at the bottom.

[0012] Preferably, the retractable pipe comprises a heat-resistant pipe and two sets of retractable ends, the two sets of retractable ends are respectively located at both ends of the heat-resistant pipe, and the first sampling pipe and the second sampling pipe are respectively fixedly connected to both ends of the heat-resistant pipe;

[0013] The retractable end is made of heat-resistant retractable material.

[0014] Preferably, both the inner wall and the outer wall of the condenser throat are provided with sealing rings that cooperate with the first sampling pipe.

[0015] Preferably, the telescopic rod is an electric telescopic rod, and the electric telescopic rod is electrically connected to the controller.

[0016] Preferably, the array of multi-point sampling pipes is evenly distributed on the side wall of the manifold.

[0017] 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 practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the three-dimensional perspectives of the present invention.

[0019] Figure 2 This is one of the perspectives of the stereoscopic and sectional views of the present invention.

[0020] Figure 3 This is the second perspective of the three-dimensional cross-sectional view of the present invention.

[0021] Figure numerals: 1. condenser throat; 2. first sampling pipe; 3. second sampling pipe; 4. mounting hole; 5. auxiliary plate; 6. mesh cage probe; 7. telescopic rod; 8. manifold; 9. multi-point sampling pipe; 10. vacuum transmitter; 11. heat-resistant pipe; 12. telescopic end; 13. sealing ring. DETAILED DESCRIPTION

[0022] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figure 1-3The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the accompanying drawings.

[0023] Various exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0024] Embodiment 1, a sampling tube support device for measuring condenser vacuum, includes a condenser throat 1, a first sampling tube 2, and a second sampling tube 3, and is characterized in that:

[0025] The condenser throat 1 is provided with a mounting hole 4, a first sampling pipe 2 is fixedly connected to the mounting hole 4, an auxiliary plate 5 is provided on the inner side wall of the condenser throat 1, and a second sampling pipe 3 is hinged on the auxiliary plate 5;

[0026] A retractable pipe is provided between the first sampling pipe 2 and the second sampling pipe 3, and a mesh cage probe 6 is provided at the front end of the second sampling pipe 3;

[0027] A telescopic rod 7 is hinged between the second sampling pipe 3 and the auxiliary plate 5;

[0028] One end of the first sampling pipe 2 is provided with a manifold 8, and a plurality of multi-point sampling pipes 9 are spaced apart on the side wall of the manifold, and a vacuum transmitter 10 is provided at the bottom;

[0029] The retractable pipe includes a heat-resistant pipe 11 and two sets of retractable ends 12, the two sets of retractable ends 12 are respectively located at both ends of the heat-resistant pipe 11, and the first sampling pipe 2 and the second sampling pipe 3 are respectively fixedly connected to the two ends of the heat-resistant pipe 11;

[0030] The retractable end 12 is made of heat-resistant retractable material;

[0031] The inner and outer walls of the condenser throat 1 are both provided with sealing rings 13 that cooperate with the first sampling pipe 2;

[0032] The telescopic rod 7 is an electric telescopic rod 7, and the electric telescopic rod 7 is electrically connected to the controller;

[0033] The multi-point sampling pipes 9 are evenly distributed on the side wall of the manifold 8 .

[0034] During sampling, the vacuum gas inside the condenser passes through the throat of the condenser 1 and enters the interior of the second sampling pipe 3 through the air holes of the mesh probe 6. At the same time, the moisture in the vacuum gas will come into contact with the second sampling pipe 3 and condense into droplets.

[0035] Since the second sampling pipe 3 is tilted and forms a certain angle with the vertical plane of the condenser throat 1, when the droplets are formed inside the second sampling pipe 3, they will flow back into the condenser due to the tilt of the second sampling pipe 3;

[0036] The airflow inside the condenser begins to enter the vacuum transmitter 10 through the first sampling pipe 2, the second sampling pipe 3 and the telescopic pipe. Since local measurement of the vacuum degree inside the condenser will have a certain error and cannot reflect the vacuum change inside the entire condenser, multi-point convergence sampling is adopted. By setting up multi-point sampling pipes 9, the sampling is made more uniform;

[0037] By driving the telescopic rod 7, the angle between the second sampling pipe 3 and the vertical plane of the condenser throat 1 can be adjusted, thereby adjusting the speed at which the water condensed into droplets in the second sampling pipe 3 flows out, thereby avoiding the phenomenon of water accumulation in the second sampling pipe 3;

[0038] The invention solves the technical problem that the current sampling tube is fixedly welded to the throat of the condenser 1 through a connecting plate. When the sampling tube is set at an unreasonable position and water accumulation or other phenomena occur, the sampling tube can only be re-welded on the inner wall of the condenser, and the angle of the sampling tube is not easy to adjust.

[0039] The above description is only for the purpose of illustrating the present invention. 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 scope of protection of the present invention.

Claims

1. A sampling tube support device for measuring condenser vacuum, comprising a condenser throat (1), a first sampling tube (2), and a second sampling tube (3), characterized in that: The condenser throat (1) is provided with a mounting hole (4), a first sampling pipe (2) is fixedly connected in the mounting hole (4), an auxiliary plate (5) is provided on the inner side wall of the condenser throat (1), and a second sampling pipe (3) is hinged on the auxiliary plate (5); A retractable pipe is provided between the first sampling pipe (2) and the second sampling pipe (3), and a mesh cage probe (6) is provided at the front end of the second sampling pipe (3); A telescopic rod (7) is hinged between the second sampling pipe (3) and the auxiliary plate (5); A manifold (8) is provided at one end of the first sampling pipe (2), and arrays of multi-point sampling pipes (9) are spaced apart on the side wall of the manifold (8), and a vacuum transmitter (10) is provided at the bottom.

2. A sampling tube support device for measuring condenser vacuum according to claim 1, characterized in that: The retractable pipe comprises a heat-resistant pipe (11) and two sets of retractable ends (12), the two sets of retractable ends (12) are respectively located at both ends of the heat-resistant pipe (11), and the first sampling pipe (2) and the second sampling pipe (3) are respectively fixedly connected to both ends of the heat-resistant pipe (11); The retractable end (12) is made of heat-resistant retractable material.

3. The sampling tube support device for measuring condenser vacuum according to claim 1, characterized in that: The inner and outer walls of the condenser throat (1) are both provided with sealing rings (13) that cooperate with the first sampling pipe (2).

4. A sampling tube support device for measuring condenser vacuum according to any one of claims 1 to 3, characterized in that: The telescopic rod (7) is an electric telescopic rod (7), and the electric telescopic rod (7) is electrically connected to the controller.

5. A sampling tube support device for measuring condenser vacuum according to any one of claims 1 to 3, characterized in that: The multi-point sampling pipes (9) are evenly spaced and distributed on the side wall of the manifold (8).

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