Resin Replacement Device for Converter Station Water System Based on Negative Pressure Jet and Its Application Method

Abstract

The present invention discloses a resin replacement device for a water system of a converter station based on negative pressure jet and an application method thereof. The resin replacement device for a water system of a converter station of the present invention comprises a water tank, a water pump, a resin particle tank, an ejector and an output pipeline for connecting to the resin inlet of a resin tank. The water inlet of the water pump is connected to the water tank, the resin particle input end of the ejector is arranged in the resin particle tank through a pipeline, the water input end is connected to the water outlet of the water pump through a first valve group, the output end is also connected to the output pipeline through a second valve group, and the output end of the water pump is also connected to the output pipeline downstream of the second valve group through a third valve group. The present invention can realize the recovery function of the original resin in the resin ion exchange tank and the supplement function of the new resin, without the need to manually add resin, and realize the recovery and supplement of the resin in a one-key manner, reduce the contact between personnel and the resin, and improve the efficiency of resin replacement.

Description

Technical Field

[0001] The invention relates to a special tool for replacing resin in a water system of a converter station, and in particular to a device for replacing resin in a water system of a converter station based on negative pressure jet and an application method thereof. Background Art

[0002] Resin ion exchange tanks play a vital role in ensuring the water quality of converter valve water cooling system and phase shifter water cooling system in converter stations. The normal operation of the corresponding water system is the basic guarantee for the normal operation of DC system and phase shifter system. In the corresponding water system of DC system and phase shifter system, due to daily loss, the resin in the ion exchange tank needs to be replaced frequently. During the replacement process, each replacement of about 0.5m 3 The resin replacement process requires at least three people and takes at least two days to complete, and there are risks of personal injury such as working at heights, skin corrosion, and foreign objects in the eyes. In addition, since the resin is replaced manually, there is a risk of the newly replaced resin being crushed, contaminated, or accidentally entered by debris. Summary of the invention

[0003] Technical problem to be solved by the present invention: In view of the above-mentioned problems of the prior art, a resin replacement device for the water system of a converter station based on negative pressure jet and an application method thereof are provided. The present invention can realize the function of recovering the original resin in the resin ion exchange tank and the function of replenishing new resin. There is no need to add resin manually, and the resin can be recovered and replenished in a one-key manner, thereby reducing the contact between personnel and resin and improving the efficiency of resin replacement.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A resin replacement device for a converter station water system based on negative pressure jet, comprising a water tank, a water pump, a resin particle tank, an ejector and an output pipeline connected to the resin inlet of a resin tank, wherein the water inlet of the water pump is connected to the water tank, the resin particle input end of the ejector is arranged in the resin particle tank through a pipeline, the water input end is connected to the water outlet of the water pump through a first valve group, the output end is also connected to the output pipeline through a second valve group, and the output end of the water pump is also connected to the output pipeline downstream of the second valve group through a third valve group.

[0006] Optionally, the converter station water system resin replacement device also includes a control unit, the first valve group, the second valve group, and the third valve group are all electric valve groups, and the control ends of the first valve group, the second valve group, the third valve group, and the water pump are all connected to the control unit.

[0007] Optionally, a first drain valve is provided at the bottom of the resin particle bin.

[0008] Optionally, the converter station water system resin replacement device further includes a resin particle recovery bin, and a recovery pipeline for connecting to a resin outlet of a resin tank is provided on the upper side of the resin particle recovery bin.

[0009] Optionally, the resin particle recovery bin and the water bin are interconnected, and a filter net for intercepting resin particles is provided between the resin particle recovery bin and the water bin.

[0010] Optionally, a second drain valve is provided at the bottom of the resin particle recovery bin.

[0011] Optionally, a bracket is provided on the top of the resin particle recovery bin, and the recovery pipeline is installed on the bracket.

[0012] Optionally, the converter station water system resin replacement device also includes a mobile cart, and the water tank, resin particle tank, and resin particle recovery tank are all arranged in the mobile cart.

[0013] An application method of the aforementioned negative pressure jet-based resin replacement device for a converter station water system includes the steps of adding resin particles to a resin tank: opening a first valve group and a second valve group, closing a third valve group, starting a water pump to feed high-pressure water to an ejector, the ejector sucking resin particles from a resin particle bin through the negative pressure formed by the high-pressure water and outputting a high-speed mixture of resin particles and water through an output end, the mixture of resin particles and water is fed into the resin tank through an output pipeline, and the water in the resin tank is discharged, thereby completing the addition of resin particles to the resin tank.

[0014] Optionally, the method further includes the step of recovering resin particles from the resin tank: closing the first valve group and the second valve group, opening the third valve group, starting the water pump to deliver high-pressure water to the resin tank through the output pipeline, discharging the resin particles and water in the resin tank together, separating the resin particles and water, and finally completing the recovery of resin particles from the resin tank.

[0015] Compared with the prior art, the present invention has the following advantages: the present invention includes a water tank, a water pump, a resin particle tank, an ejector and an output pipeline connected to the resin inlet of the resin tank, the water inlet of the water pump is connected to the water tank, the resin particle input end of the ejector is arranged in the resin particle tank through a pipeline, the water input end is connected to the water outlet of the water pump through a first valve group, and the output end is also connected to the output pipeline through a second valve group, and the output end of the water pump is also connected to the output pipeline downstream of the second valve group through a third valve group, wherein the third valve group constitutes a resin recovery loop for discharging the original resin particles of the resin tank, the first valve group and the second valve group constitute a new resin replenishment loop for replenishing the resin tank with resin particles based on the negative pressure jet principle, thereby realizing the recovery function of the original resin in the resin ion exchange tank and the replenishment function of the new resin, without the need to manually add resin, realizing the recovery and replenishment of the resin, reducing the contact between personnel and the resin, and improving the efficiency of resin replacement. The present invention has a simple structure, is easy to operate and has a low cost. It combines the characteristics and requirements of resin replacement in the water system of a converter station to realize the recovery function of the original resin, while also realizing the supplementation function of new resin, thereby improving the resin replacement efficiency. It can solve the problem of low efficiency of conventional resin replacement methods, reduce the long-term contact between personnel and resin, and improve the reliability of converter station equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the device according to the embodiment of the present invention.

[0017] Figure 2 Schematic diagram of the working process of the control unit in the embodiment of the present invention.

[0018] Legend: 1. Water tank; 2. Water pump; 21. Third valve group; 3. Resin particle tank; 31. First drain valve; 4. Ejector; 41. First valve group; 42. Second valve group; 5. Output pipeline; 6. Control unit; 7. Resin particle recovery tank; 71. Filter; 72. Second drain valve; 73. Bracket; 8. Recovery pipeline; 9. Mobile trolley. DETAILED DESCRIPTION

[0019] like Figure 1 As shown, the resin replacement device of the converter station water system based on negative pressure jet in this embodiment includes a water tank 1, a water pump 2, a resin particle tank 3, an ejector 4 and an output pipeline 5 connected to the resin inlet of the resin tank. The water inlet of the water pump 2 is connected to the water tank 1, the resin particle input end of the ejector 4 is arranged in the resin particle tank 3 through a pipeline, the water input end is connected to the water outlet of the water pump 2 through the first valve group 41, and the output end is also connected to the output pipeline 5 through the second valve group 42. The output end of the water pump 2 is also connected to the output pipeline 5 downstream of the second valve group 42 through the third valve group 21. See Figure 1, wherein the third valve group 21 constitutes a resin recovery circuit a for discharging the original resin particles from the resin tank, and the first valve group 41 and the second valve group 42 constitute a new resin replenishment circuit b for replenishing resin particles into the resin tank. Thus, the resin recovery circuit selection and the new resin replenishment circuit selection can be realized, realizing the original resin recovery and new resin replenishment functions.

[0020] For an implementation of an integrated control unit, such as Figure 1 As shown, in this embodiment, the resin replacement device for the water system of the converter station further includes a control unit 6, and the first valve group 41, the second valve group 42, and the third valve group 21 are all electric valve groups, and the control ends of the first valve group 41, the second valve group 42, the third valve group 21, and the water pump 2 are all connected to the control unit 6. In this embodiment, the control unit 6 is specifically in the form of a control cabinet, which includes the control modules of the first valve group 41, the second valve group 42, the third valve group 21, and the water pump 2, and a microprocessor and its peripheral circuit modules for realizing automatic control of the first valve group 41, the second valve group 42, the third valve group 21, and the water pump 2, and can realize a one-button start and stop control function of the operating state.

[0021] like Figure 1 As shown, a first drain valve 31 is provided at the bottom of the resin particle bin 3 to realize the functions of sewage discharge and resin particle drain.

[0022] Furthermore, in order to realize the resin particle recovery function, as Figure 1 As shown, the resin replacement device for the water system of the converter station in this embodiment further includes a resin particle recovery bin 7 , and a recovery pipeline 8 connected to the resin outlet of the resin tank is provided on the upper side of the resin particle recovery bin 7 .

[0023] In order to realize water recycling and facilitate on-site construction, Figure 1 As shown, in this embodiment, the resin particle recovery bin 7 and the water bin 1 are interconnected, and a filter screen 71 for intercepting resin particles is provided between the resin particle recovery bin 7 and the water bin 1 .

[0024] like Figure 1 As shown, in this embodiment, a second drain valve 72 is provided at the bottom of the resin particle recovery bin 7 to realize the functions of sewage discharge and resin particle drain. Figure 1 As shown, in this embodiment, a bracket 73 is provided on the top of the resin particle recovery bin 7 , and the recovery pipeline 8 is installed on the bracket 73 .

[0025] In order to realize the convenience of moving and carrying the device of this embodiment, Figure 1 As shown, the resin replacement device for the water system of the converter station in this embodiment further includes a mobile trolley 9, and the water tank 1, the resin particle tank 3, and the resin particle recovery tank 7 are all arranged in the mobile trolley 9. The resin replacement device for the water system of the converter station in this embodiment is loaded by the mobile trolley 9, which is convenient for movement and transportation.

[0026] In addition, the present embodiment also provides an application method of the aforementioned negative pressure jet-based resin replacement device for the water system of a converter station, including the steps of adding resin particles to the resin tank: opening the first valve group 41 and the second valve group 42, closing the third valve group 21, starting the water pump 2 to supply high-pressure water to the ejector 4, the ejector 4 sucks resin particles from the resin particle bin 3 through the negative pressure formed by the high-pressure water and outputs a high-speed mixture of resin particles and water through the output end, the mixture of resin particles and water is delivered to the resin tank through the output pipeline 5, and the water in the resin tank is discharged, and finally the resin particles are added to the resin tank.

[0027] This embodiment also includes the step of recovering resin particles from the resin tank: closing the first valve group 41 and the second valve group 42, opening the third valve group 21, starting the water pump 2 to deliver high-pressure water to the resin tank through the output pipe 5, discharging the resin particles and water in the resin tank together, separating the resin particles and water, and finally completing the recovery of resin particles from the resin tank.

[0028] like Figure 2 As shown, when the above-mentioned converter station water system resin replacement device based on negative pressure jet is actually used, the step of recovering resin particles from the resin tank is first performed (resin recovery mode), and then the step of adding resin particles to the resin tank is performed (resin replenishment mode). The control steps of the control unit 6 include:

[0029] S1, execution mode selection, if it is resin recovery mode, jump to the next step;

[0030] S2, adjusting the resin recovery loop a so that the resin recovery loop a is opened and the new resin replenishment loop b is closed;

[0031] S3, start the water pump 2, and execute the step of recovering the resin particles from the resin tank (resin recovery mode). If the original resin recovery is completed, jump to the next step; otherwise, continue to execute step S3;

[0032] S4, determine that it is necessary to stop resin recovery and turn off water pump 2;

[0033] S5, adjusting the resin recovery loop a so that the resin recovery loop a is closed and the new resin replenishment loop b is closed;

[0034] S6, adjusting the resin recovery loop a so that the resin recovery loop a is closed and the new resin replenishment loop b is opened;

[0035] S7, start the water pump 2, and execute the step of adding resin particles to the resin tank (resin replenishment mode). If the new resin is replenished, jump to the next step; otherwise, continue to execute step S7;

[0036] S8. Determine that it is necessary to stop the resin replenishment and turn off the water pump 2.

[0037] Through the above steps, combined with the characteristics and requirements of resin replacement in the converter station water system, the one-click recovery function of the original resin is realized, and the one-click replenishment function of the new resin is also realized, thereby improving the efficiency of resin replacement, solving the problem of low efficiency of conventional resin replacement methods, reducing long-term contact between personnel and resin, and improving the reliability of converter station equipment.

[0038] To sum up, the device of this embodiment has a simple structure, easy operation and low cost. Combined with the characteristics and requirements of resin replacement in the water system of the converter station, it realizes the one-key recovery function of the original resin, and also realizes the one-key replenishment function of the new resin, thereby improving the resin replacement efficiency, solving the problem of low efficiency of conventional resin replacement methods, reducing long-term contact between personnel and resin, and improving the reliability of converter station equipment.

[0039] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An application method of a converter station water system resin replacement device based on negative pressure jet, characterized in that: The negative pressure jet-based resin replacement device for a converter station water system comprises a water tank (1), a water pump (2), a resin particle tank (3), an ejector (4), and an output pipeline (5) for connecting to a resin inlet of a resin tank, wherein the water inlet of the water pump (2) is connected to the water tank (1), the resin particle input end of the ejector (4) is arranged in the resin particle tank (3) through a pipeline, the water input end is connected to the water outlet of the water pump (2) through a first valve group (41), the output end is further connected to the output pipeline (5) through a second valve group (42), and the output end of the water pump (2) is further connected to the output pipeline (5) downstream of the second valve group (42) through a third valve group (21); the application method comprises the steps of adding resin particles to the resin tank: opening the first valve group (41) and the second valve group (42); , closing the third valve group (21), starting the water pump (2) to feed high-pressure water to the ejector (4), the ejector (4) sucking resin particles from the resin particle bin (3) by the negative pressure formed by the high-pressure water and outputting a high-speed mixture of resin particles and water through the output end, the mixture of resin particles and water is fed into the resin tank through the output pipeline (5), and the water in the resin tank is discharged, and finally the resin particles are added to the resin tank; the application method also includes the step of recovering the resin particles from the resin tank: closing the first valve group (41) and the second valve group (42), opening the third valve group (21), starting the water pump (2) to feed the high-pressure water into the resin tank through the output pipeline (5), discharging the resin particles and water in the resin tank together, separating the resin particles and water, and finally recovering the resin particles from the resin tank.

2. The application method of the negative pressure jet-based converter station water system resin replacement device according to claim 1 is characterized in that: The converter station water system resin replacement device further comprises a control unit (6); the first valve group (41), the second valve group (42), and the third valve group (21) are all electric valve groups; and control ends of the first valve group (41), the second valve group (42), the third valve group (21), and the water pump (2) are all connected to the control unit (6).

3. The application method of the negative pressure jet-based converter station water system resin replacement device according to claim 1 is characterized in that: A first drain valve (31) is provided at the bottom of the resin particle bin (3).

4. The application method of the negative pressure jet-based converter station water system resin replacement device according to claim 1 is characterized in that: The converter station water system resin replacement device further comprises a resin particle recovery bin (7), and a recovery pipeline (8) for connecting to a resin outlet of a resin tank is provided on the upper side of the resin particle recovery bin (7).

5. The application method of the negative pressure jet-based converter station water system resin replacement device according to claim 4 is characterized in that: The resin particle recovery bin (7) and the water bin (1) are interconnected, and a filter screen (71) for intercepting resin particles is provided between the resin particle recovery bin (7) and the water bin (1).

6. The application method of the negative pressure jet-based converter station water system resin replacement device according to claim 5 is characterized in that: A second drain valve (72) is provided at the bottom of the resin particle recovery bin (7).

7. The application method of the negative pressure jet-based converter station water system resin replacement device according to claim 6 is characterized in that: A bracket (73) is provided on the top of the resin particle recovery bin (7), and the recovery pipeline (8) is installed on the bracket (73).

8. The application method of the negative pressure jet-based converter station water system resin replacement device according to claim 4 is characterized in that: The converter station water system resin replacement device further comprises a mobile trolley (9), wherein the water bin (1), the resin particle bin (3), and the resin particle recovery bin (7) are all arranged in the mobile trolley (9).

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