Titration device for detecting water hardness of power station boiler
By introducing a rotation mechanism and a marking mechanism into the titration device, precise adjustment of ETDA standard solution titration is achieved, solving the problem of inaccurate titration speed and improving the accuracy and efficiency of detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-07
AI Technical Summary
In existing power plant boiler water hardness testing, the inaccurate titration rate of ETDA standard solution leads to excessively long testing time or excessive solution content, affecting the test results.
A titration device including a rotating mechanism and a marking mechanism was designed. The titration speed of the ETDA standard solution is adjusted by rotating the valve core, and the adjustment angle is observed by using the pointer marking scale to achieve precise control.
It improves the accuracy and efficiency of titration detection, ensures precise adjustment of titration speed, and avoids problems such as excessive detection time or excessive solution.
Smart Images
Figure CN224095800U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of titration devices, specifically a titration device for testing the hardness of boiler water in power plants. Background Technology
[0002] When a power plant generates electricity, water needs to be added to the boiler. The pressure created by the water through the small openings drives the generator to rotate, thus achieving the power generation function.
[0003] If the water is hard, a thicker layer of scale will form on the inner wall of the boiler, which will reduce the heat transfer efficiency. Therefore, the hardness of the water needs to be tested before it enters the boiler. The existing testing method is generally the titration test. After the titration is completed, the volume of ETDA consumed is recorded, and then the water hardness is calculated based on the volume of ETDA standard solution consumed.
[0004] In the existing technology, the titration speed of ETDA standard solution cannot be well adjusted during the titration process. The adjustment process may result in either too slow or too fast adjustment. Too slow adjustment may lead to a long titration detection time, while too fast adjustment may lead to excessive titration of ETDA standard solution, thus affecting the detection results. Utility Model Content
[0005] The purpose of this utility model is to provide a titration device for detecting the hardness of boiler water in power plants in order to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a titration device for testing the hardness of boiler water in a power plant, comprising a burette, a hollow connecting sleeve formed at the bottom end of the burette, a burette nozzle integrally formed at the bottom end of the connecting sleeve, a rotating mechanism extending to one end outside the connecting sleeve being rotatably mounted inside the connecting sleeve, and an marking mechanism integrally formed at one end of the rotating mechanism located inside the connecting sleeve, extending to the other end outside the connecting sleeve.
[0007] As a further embodiment of this utility model: the rotating mechanism includes a valve core installed inside the connecting sleeve, one end of the valve core is integrally formed with a first rotating shaft extending to one end of the connecting sleeve, the end of the first rotating shaft located outside the connecting sleeve is fixedly installed with a handle, and one end of the connecting sleeve is provided with a first circular hole for the first rotating shaft to pass through.
[0008] As a further embodiment of this utility model: a through hole is vertically opened at the center of the valve core, the inner diameter of the through hole is equal to the inner diameter of the burette, and a sealing element that contacts the valve core is installed on the inner wall of the connecting sleeve, and the sealing element has an opening at the position where it is aligned with the output end of the burette and the output end of the connecting sleeve.
[0009] As a further embodiment of this utility model: the marking mechanism includes a second rotating shaft integrally formed on the valve core at the end away from the first rotating shaft, one end of the second rotating shaft extends through to the outside of the other end of the connecting sleeve, a pointer is fixedly installed at the end of the second rotating shaft located outside the connecting sleeve, and marking scales are engraved on the outer peripheral edge of the connecting sleeve near the pointer.
[0010] As a further improvement of this utility model, the connecting sleeve has a second circular hole inside for the second rotating shaft to rotate.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. By setting up a marking mechanism, when adjusting the titration speed of the ETDA standard solution, the degree of valve opening can be judged by visually observing the marking scale indicated by the pointer in the marking mechanism, thereby enabling more precise titration speed adjustment and improving detection efficiency while ensuring the accuracy of titration detection results. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;
[0015] Figure 3 For the present utility model Figure 2 Enlarged view of a portion of point A in the middle.
[0016] In the diagram: 1. Burette; 2. Connecting sleeve; 3. Burette tip; 4. Handle; 5. Pointer; 6. Marking scale; 7. Through hole; 8. Rotating shaft No. 2; 9. Valve core; 10. Rotating shaft No. 1. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figures 1-3In this embodiment of the present invention, a titration device for testing the hardness of boiler water in a power plant includes a burette 1, a hollow connecting sleeve 2 formed at the bottom end of the burette 1, a burette nozzle 3 integrally formed at the bottom end of the connecting sleeve 2, a rotating mechanism extending to one end outside the connecting sleeve 2 rotatably mounted inside the connecting sleeve 2, and an marking mechanism integrally formed at one end of the rotating mechanism inside the connecting sleeve 2, extending to the other end outside the connecting sleeve 2.
[0019] In this embodiment: when testing the water hardness for power plant boilers, a sample of the water used in the power plant boiler is first taken and placed in a glass container, such as a conical flask. Then, an ammonia buffer solution and Eriochrome Black T indicator are added to the water sample. The rotating mechanism is then turned on, and the ETDA standard solution inside the burette 1 enters the burette 3 through the opened rotating mechanism and drips into the glass container from the conical outlet below the burette 3. The glass container is then shaken to ensure thorough mixing. Near the endpoint, the solution changes from purple to sky blue through slow dripping and shaking, which is the midpoint.
[0020] During the titration of the ETDA standard solution, the opening angle of the rotating mechanism needs to be continuously adjusted. The opening angle of the rotating mechanism can be easily adjusted by using the indicator position of the through-marker mechanism.
[0021] Please refer to this carefully. Figure 2 and Figure 3 The rotating mechanism includes a valve core 9 rotatably mounted on the inner wall of the connecting sleeve 2. One end of the valve core 9 is integrally formed with a first rotating shaft 10 that extends to the outer end of the connecting sleeve 2. A handle 4 is fixedly mounted on the outer end of the first rotating shaft 10. One end of the connecting sleeve 2 is provided with a first round hole for the first rotating shaft 10 to pass through. A through hole 7 is vertically provided at the center of the valve core 9.
[0022] In this embodiment: during the initial titration of the ETDA standard solution, the valve core 9 is fully opened by rotating it. At this time, the through hole 7 at the center of the valve core 9 is aligned with the output port of the burette 1 and the input port of the burette 3. At this time, the titration speed of the ETDA standard solution is the fastest. As the titration proceeds, the valve core 9 is gradually rotated to move towards the closed state, so that the through hole 7 is gradually misaligned with the output port of the burette 1 and the input port of the burette 3. At this time, the titration speed of the ETDA standard solution gradually decreases, realizing the slow drip and shake titration method.
[0023] Please refer to this carefully. Figure 2 and Figure 3 The inner diameter of the through hole 7 is equal to the inner diameter of the burette 1. The inner wall of the connecting sleeve 2 is equipped with a sealing element that contacts the valve core 9. The sealing element has an opening at the position where it is aligned with the output end of the burette 1 and the output end of the connecting sleeve 2.
[0024] In this embodiment: the design of the above-mentioned sealing element can effectively improve the sealing performance between the valve core 9 and the inner wall of the connecting sleeve 2, avoid leakage problems, and the design of the opening of the sealing element can prevent the sealing element from affecting the normal titration operation.
[0025] Please refer to this carefully. Figure 1 and Figure 3 The marking mechanism includes a second rotating shaft 8 integrally formed on the valve core 9 at the end away from the first rotating shaft 10. One end of the second rotating shaft 8 extends to the outside of the other end of the connecting sleeve 2. A pointer 5 is fixedly installed at the end of the second rotating shaft 8 located outside the connecting sleeve 2. The outer periphery of the connecting sleeve 2 near the pointer 5 is engraved with marking scale 6. A second circular hole for the second rotating shaft 8 to rotate is opened inside the connecting sleeve 2.
[0026] In this embodiment: during the titration of the ETDA standard solution, the opening angle of the valve core 9 is determined by observing the position of the pointer 5 pointing to the mark 6, thereby gradually reducing the titration speed of the ETDA standard solution. After the titration is completed, the valve core 9 can be quickly closed. This design method can better control the titration speed of the ETDA standard solution during the titration process compared with the existing titration device.
[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A titration apparatus for testing the hardness of boiler water in a power plant, comprising a burette (1), characterized in that, The bottom end of the burette (1) is formed with a hollow connecting sleeve (2), and the bottom end of the connecting sleeve (2) is integrally formed with a burette nozzle (3). The connecting sleeve (2) is rotatably installed with a rotating mechanism extending to one end of the connecting sleeve (2). The end of the rotating mechanism located inside the connecting sleeve (2) is integrally formed with an marking mechanism that extends to the other end of the connecting sleeve (2).
2. The titration device for detecting the hardness of boiler water in a power plant according to claim 1, characterized in that, The rotating mechanism includes a valve core (9) rotatably installed inside the connecting sleeve (2). One end of the valve core (9) is integrally formed with a first rotating shaft (10) that extends to the outside of the connecting sleeve (2). A handle (4) is fixedly installed at the end of the first rotating shaft (10) located outside the connecting sleeve (2). A first circular hole is opened at one end of the connecting sleeve (2) for the first rotating shaft (10) to pass through.
3. The titration device for detecting the hardness of boiler water in a power plant according to claim 2, characterized in that, The valve core (9) has a vertical through hole (7) at its center. The inner diameter of the through hole (7) is equal to the inner diameter of the burette (1). The inner wall of the connecting sleeve (2) is fitted with a sealing element that contacts the valve core (9). The sealing element has an opening at the position where it is aligned with the output end of the burette (1) and the output end of the connecting sleeve (2).
4. The titration device for detecting the hardness of boiler water in a power plant according to claim 3, characterized in that, The marking mechanism includes a second rotating shaft (8) integrally formed on the valve core (9) at the end away from the first rotating shaft (10). One end of the second rotating shaft (8) extends to the outside of the other end of the connecting sleeve (2). A pointer (5) is fixedly installed on the end of the second rotating shaft (8) located outside the connecting sleeve (2). Marking scales (6) are engraved on the outer periphery of the connecting sleeve (2) near the pointer (5).
5. A titration device for detecting the hardness of boiler water in a power plant according to claim 4, characterized in that, The connecting sleeve (2) has a second circular hole inside for the second rotating shaft (8) to rotate.