Condensate water replenishing device for steam turbine of thermal power plant

Abstract

The utility model provides a thermal power plant steam turbine condensed water replenishing device which comprises a water replenishing tank, a water pump and a water replenishing pipe, a sampling mechanism is arranged above the water replenishing tank and comprises a sampling pipe, a water outlet pipe and a rotating rod, the rotating rod is arranged in the middle of the interior of the sampling pipe, a spiral water guide piece is installed on the outer side of the rotating rod, and the spiral water guide piece is upwards spiral. A water outlet pipe is obliquely installed on the right side of the sampling pipe, a rocker is connected to the upper end of the rotating rod, a fixing cylinder is installed above the water supplementing tank, internal threads are arranged on the inner wall of the fixing cylinder, and external threads are arranged on the outer wall of the lower end of the sampling pipe. According to the water replenishing tank, water in the water replenishing tank can be spirally guided upwards in a manner of rotating the spiral water guide sheet, and is guided out through the water outlet pipe, so that desalted water in the water replenishing tank can be quickly sampled, the operation manner is simple and convenient, and external dust and impurities are not easy to enter the water replenishing tank.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam turbine make-up water, and particularly relates to a condensate make-up water device for a steam turbine in a thermal power plant. Background Technique

[0002] In a thermal power plant, it is important to supplement the condensate of the steam turbine with demineralized water pumped from a make-up water tank by a water pump. It can maintain the water volume stability of the condensate system and ensure sufficient cooling and working media required for the normal operation of the steam turbine. At the same time, the supplemented demineralized water has pure quality, which can prevent impurities from corroding and damaging the equipment.

[0003] At present, there are some obvious disadvantages in this method in practical applications. First of all, the demineralized water needs to be sampled and analyzed regularly when stored in the water tank to ensure that the water quality meets the requirements. However, the existing sampling methods are relatively cumbersome and laborious. Usually, workers need to use specific tools to open the sampling port of the water tank for sampling. These tools have cumbersome operation methods, and the sampling process is not only time-consuming and laborious, but also increases the labor intensity of the workers. Frequent sampling operations increase the risk of the water tank being contaminated by the outside world. Each time the sampling port is opened, it may allow dust, impurities, etc. from the outside to enter the water tank, thus affecting the quality of the demineralized water. Especially in some thermal power plants with poor environmental conditions, this risk is more prominent.

[0004] To solve this problem, we propose a condensate make-up water device for a steam turbine in a thermal power plant. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a condensate make-up water device for a steam turbine in a thermal power plant to solve the problems raised in the above background technique.

[0006] The utility model is realized through the following technical solutions: A condensate make-up water device for a steam turbine in a thermal power plant, comprising: a make-up water tank, a water pump, and a make-up water pipe. A sampling mechanism is provided above the make-up water tank, and the sampling mechanism includes a sampling pipe, a water outlet pipe, and a rotating rod;

[0007] A rotating rod is provided in the middle of the sampling pipe. A spiral water guide vane is installed on the outer side of the rotating rod, and the spiral water guide vane is spiraled upward. A water outlet pipe is obliquely installed on the right side of the sampling pipe, and the upper end of the rotating rod is connected to a rocker;

[0008] A fixed cylinder is installed above the make-up water tank. The inner wall of the fixed cylinder is provided with internal threads, and the outer wall of the lower end of the sampling pipe is provided with external threads. The fixed cylinder and the sampling pipe are rotationally connected through threads.

[0009] As a preferred embodiment, a bearing is installed in the middle above the sampling pipe, and the rotating rod is connected to the inner side of the bearing.

[0010] As a preferred embodiment, a cross-shaped rotating rod is installed outside the upper part of the sampling tube.

[0011] As a preferred embodiment, a water inlet is opened at the lower part of the sampling tube, and the sampling tube is communicated with the water outlet pipe.

[0012] As a preferred embodiment, a bottom plate is installed below the water replenishing tank, and four universal wheels are installed below the bottom plate.

[0013] As a preferred embodiment, a water inlet pipe is installed above the right side of the water replenishing tank, and a drain valve is installed below the back surface thereof.

[0014] As a preferred embodiment, a side plate is installed on the left side above the water replenishing tank, a water pump is installed above the side plate, the water pump is connected to the inside of the water replenishing tank through a water suction pipe, and a water replenishing pipe is installed at the rear side above the water pump.

[0015] As a preferred embodiment, a transparent observation plate is installed in the middle of the front surface of the water replenishing tank.

[0016] After adopting the above technical solutions, the beneficial effects of the present utility model are as follows:

[0017] 1. By providing a sampling mechanism, the water inside the water replenishing tank can be spirally guided upward and discharged outward through the water outlet pipe by rotating the spiral water guide plate, so that the demineralized water inside the water replenishing tank can be sampled quickly. The operation method is simple and convenient, and external dust and impurities are not easily introduced into the water replenishing tank.

[0018] 2. By providing a cross-shaped rotating rod, a fixed cylinder with internal threads and external threads provided on the outer side of the sampling tube, the sampling tube can be lifted and lowered inside the water replenishing tank to facilitate sampling of the demineralized water at different water levels inside the water replenishing tank, and thus facilitate understanding the water quality conditions of the water at different depths inside the water replenishing tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 FIG. is a schematic diagram of the overall structure of a condensate water replenishing device for a steam turbine in a thermal power plant according to the present utility model.

[0021] Figure 2 FIG. is a schematic diagram of the structure of a condensate water replenishing device for a steam turbine in a thermal power plant according to the present utility model from another perspective.

[0022] Figure 3 This is a schematic diagram of the internal cross-section of a condensate water make-up device for a steam turbine in a thermal power plant according to the present utility model.

[0023] Figure 4 This is a schematic structural diagram of the internal cross-section of a sampling tube in a condensate water make-up device for a steam turbine in a thermal power plant according to the present utility model.

[0024] In the figure, 1 is a make-up water tank; 2 is a water inlet pipe; 3 is a bottom plate; 4 is a universal wheel;

[0025] 5 is a sampling mechanism; 51 is a sampling tube; 52 is a water outlet pipe; 53 is an external thread; 54 is a fixed cylinder; 55 is a cross-shaped rotating rod; 56 is a bearing; 57 is a rotating rod; 58 is a rocker; 59 is a spiral water guide vane; 510 is a water inlet;

[0026] 6 is a transparent observation plate; 7 is a side plate; 8 is a water pump; 9 is a water suction pipe; 10 is a make-up water pipe; 11 is a drain valve. Specific implementation manner

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0028] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a condensate water make-up device for a steam turbine in a thermal power plant, including: a make-up water tank 1, a water pump 8, and a make-up water pipe 10. A sampling mechanism 5 is provided above the make-up water tank 1. The sampling mechanism 5 includes a sampling tube 51, a water outlet pipe 52, and a rotating rod 57;

[0029] A rotating rod 57 is provided in the middle of the sampling tube 51. A spiral water guide vane 59 is installed on the outer side of the rotating rod 57. The spiral water guide vane 59 is spiraled upward. A water outlet pipe 52 is obliquely installed on the right side of the sampling tube 51. The upper end of the rotating rod 57 is connected to a rocker 58;

[0030] A fixed cylinder 54 is installed above the make-up water tank 1. The inner wall of the fixed cylinder 54 is provided with an internal thread. The outer wall of the lower end of the sampling tube 51 is provided with an external thread 53. The fixed cylinder 54 and the sampling tube 51 are rotationally connected by threads.

[0031] A bearing 56 is installed in the middle above the sampling tube 51. The rotating rod 57 is connected to the inner side of the bearing 56.

[0032] A cross-shaped rotating rod 55 is installed on the outer side above the sampling tube 51.

[0033] A water inlet 510 is provided below the sampling pipe 51, and the sampling pipe 51 is communicated with the water outlet pipe 52.

[0034] A bottom plate 3 is installed below the water replenishing tank 1, and four universal wheels 4 are installed below the bottom plate 3. The water replenishing tank 1 can be flexibly moved through the universal wheels 4, so as to facilitate the adjustment of the use position.

[0035] A water inlet pipe 2 is installed above the right side of the water replenishing tank 1, and a drain valve 11 is installed below the back surface thereof.

[0036] A side plate 7 is installed above the left side of the water replenishing tank 1, a water pump 8 is installed above the side plate 7, the water pump 8 is connected to the inside of the water replenishing tank 1 through a water suction pipe 9, and a water replenishing pipe 10 is installed at the rear side above the water pump 8.

[0037] A transparent observation plate 6 is installed in the middle of the front surface of the water replenishing tank 1.

[0038] Please refer to Figures 1 to 4 , as the first embodiment of the present utility model: During actual use, when water replenishment is required, the water pump 8 extracts the demineralized water inside the water replenishing tank 1 through the water suction pipe 9 and discharges it through the water replenishing pipe 10 for water replenishment (the operation of replenishing the condensate water of the steam turbine in the thermal power plant is the prior art and will not be elaborated here). When it is necessary to sample the demineralized water inside the water replenishing tank 1, the rotating rod 57 can be driven to rotate by the rocker 58. The rotating rod 57 can drive the inner side of the bearing 56 to rotate, and the rotating rod 57 drives the spiral water guide vane 59 to rotate inside the sampling pipe 51. Under the action of the spiral water guide vane 59, the demineralized water inside the water replenishing tank 1 is guided upward through the water inlet 510. When the demineralized water reaches the position of the water outlet pipe 52, it can be discharged outward through the water outlet pipe 52, so as to facilitate rapid sampling. The operation method is simple and convenient, and this sampling design can prevent external dust and impurities from easily entering the water replenishing tank 1.

[0039] Please refer to Figures 1 to 4 , as the second embodiment of the present utility model: If it is necessary to sample the demineralized water at different water levels inside the water replenishing tank 1, the sampling pipe 51 can be rotated by the cross-shaped rotating rod 55. The sampling pipe 51 can rotate and lift and adjust inside the fixed cylinder 54 through the external thread 53, so that the lower end of the sampling pipe 51 can lift and adjust the sampling height of the water inlet 510 inside the water replenishing tank 1. During the adjustment process, the position of the sampling pipe 51 can be observed through the transparent observation plate 6. After the adjustment is completed, sampling can be carried out in combination with the description of the first embodiment, so as to facilitate sampling of the demineralized water at different water levels inside the water replenishing tank 1, and further facilitate understanding the water quality conditions of the water at different depths inside the water replenishing tank 1.

[0040] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A condensate water make-up device for a steam turbine in a thermal power plant, comprising: A make-up water tank (1), a water pump (8) and a make-up water pipe (10), characterized in that: a sampling mechanism (5) is provided above the make-up water tank (1), and the sampling mechanism (5) includes a sampling pipe (51), a water outlet pipe (52) and a rotating rod (57); A rotating rod (57) is provided in the middle of the sampling pipe (51), a spiral water guide vane (59) is installed on the outer side of the rotating rod (57), the spiral water guide vane (59) is spiraled upward, a water outlet pipe (52) is obliquely installed on the right side of the sampling pipe (51), and the upper end of the rotating rod (57) is connected to a rocker (58); A fixed cylinder (54) is installed above the make-up water tank (1), an internal thread is provided on the inner wall of the fixed cylinder (54), an external thread (53) is provided on the outer wall of the lower end of the sampling pipe (51), and the fixed cylinder (54) and the sampling pipe (51) are rotationally connected by threads.

2. The condensate water make-up device for a steam turbine in a thermal power plant according to claim 1, characterized in that: A bearing (56) is installed in the middle above the sampling pipe (51), and the rotating rod (57) is connected to the inner side of the bearing (56).

3. The condensate water make-up device for a steam turbine in a thermal power plant according to claim 2, wherein: A cross-shaped rotating rod (55) is installed on the outer side above the sampling pipe (51).

4. The condensate water make-up device for a steam turbine in a thermal power plant according to claim 3, wherein: A water inlet (510) is provided below the sampling pipe (51), and the sampling pipe (51) is communicated with the water outlet pipe (52).

5. The condensate water make-up device for a steam turbine in a thermal power plant according to claim 4, characterized in that: A bottom plate (3) is installed below the make-up water tank (1), and four universal wheels (4) are installed below the bottom plate (3).

6. The condensate water make-up device for a steam turbine in a thermal power plant according to claim 1, characterized in that: An inlet pipe (2) is installed above the right side of the make-up water tank (1), and a drain valve (11) is installed below the back surface thereof.

7. The condensate water make-up device for steam turbines in thermal power plants according to claim 6, characterized in that: A side plate (7) is installed above the left side of the make-up water tank (1), a water pump (8) is installed above the side plate (7), the water pump (8) is connected to the inside of the make-up water tank (1) through a water suction pipe (9), and a make-up water pipe (X) is installed at the rear side above the water pump (8).

8. The condensate water make-up device for a steam turbine in a thermal power plant according to claim 7, wherein: A transparent observation plate (6) is installed in the middle of the front surface of the make-up water tank (1).

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