Circulating pump starting device
By designing a circulation pump starter connected to the power supply circuit, the problem of accidental contact of the circulation pump starter device in the auxiliary water supply system of the nuclear power plant is solved, convenient start-up and shutdown are achieved, and the convenience of the work site is improved. .
Patent Information
- Application Number
- CN202420952937.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The circulating pump starting device of the auxiliary water supply system of the nuclear power plant is prone to shutdown of equipment due to accidental contact of staff during the test, and the traditional test box needs to be kept in the inserted state for a long time, which affects the convenience of work.
A circulating pump starter device connected to a detachable plug and power supply circuit is designed, using an aviation plug and power supply circuit, including contactors, relays, circuit breakers and fuses, to achieve convenient start and shutdown and reduce the risk of accidental contact.
It improves the convenience and portability of the circulating pump starting device, reduces the possibility of accidental contact on site, simplifies the operation process, and improves the convenience of the work site.
Smart Images
Figure CN222191189U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nuclear power auxiliary water supply systems, in particular to a circulating pump starting device. Background Art
[0002] The auxiliary feed water system storage tank of a nuclear power plant needs to be regularly cycled and sampled every month. This test requires inserting a test box on the electrical panel to start the circulation pump to circulate the auxiliary feed water system tank for 20 hours. During the test, the test box on the electrical panel is placed on the ground and needs to remain inserted. Since the current test box has a relatively long wire, the junction box can start and stop the equipment at a distance, but it is easy for the staff to accidentally touch it, causing the test to be interrupted. Therefore, it is urgent to improve the circulating pump starting device. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a circulating pump starting device.
[0004] The technical solution adopted by the utility model to solve the technical problem is: a circulating pump starting device, the starting device comprises a plug, a power supply and a power supply circuit respectively connected to the circulating pump and the power supply, the plug comprises a shell, a first pin, a second pin and a third pin;
[0005] One end of the first pin placed in the housing is respectively connected to one end of the second pin placed in the housing and one end of the third pin placed in the housing, and the plug is detachably connected to the power circuit;
[0006] The plug is used to connect the loop between the power circuit and the power supply so as to start the circulation pump.
[0007] Further, in the circulating pump starting device described in the utility model, the power supply circuit includes a socket module adapted to the plug, and the socket module includes a first socket connected to the positive pole of the power supply, a second socket connected to the negative pole of the power supply, and a third socket;
[0008] When the plug is inserted, the first socket is connected to the second socket, and the first socket is connected to the third socket.
[0009] Further, in the circulating pump starting device described in the utility model, the power supply circuit also includes a contactor 001JA and a relay 002XK;
[0010] The second socket is connected to the negative pole of the power supply via the first normally open contact of the contactor 001JA, and the third socket is connected to the negative pole of the power supply via the first normally open contact of the relay 002XK. The contactor 001JA is also used to connect the circulation pump. The positive pole of the power supply is connected to one end of the first normally open contact of the contactor 001JA connected to the second socket via the second normally open contact of the contactor 001JA and the second normally open contact of the relay 002XK.
[0011] Furthermore, in the circulating pump starting device described in the utility model, the power supply circuit also includes a relay 001XD, and the socket module also includes a first contact, the first contact is connected to the negative pole of the power supply via the normally open contact of the relay 001XD, and the second socket is connected to the negative pole of the power supply via the normally closed contact of the relay 001XD and the first normally open contact of the contactor 001JA in sequence.
[0012] Furthermore, in the circulating pump starting device described in the utility model, the power supply circuit also includes a two-pole circuit breaker 003JA connected to the two poles of the power supply, and a three-pole load switch 001JS arranged between the first socket and the connection line of the positive pole of the power supply.
[0013] Further, in the circulating pump starting device described in the utility model, the power supply circuit also includes a thermal relay 001XS and a three-pole fuse 001FU connected in parallel; one end of the normally open contact of the thermal relay 001XS and the normally open contact of the three-pole fuse 001FU connected in parallel is connected to one end of the three-pole load switch 001JS connected to the first socket, and the other end of the normally open contact of the thermal relay 001XS and the normally open contact of the three-pole fuse 001FU connected in parallel is connected to one end of the first normally closed contact of the relay 001XD connected to the first contact.
[0014] Furthermore, in the circulating pump starting device described in the utility model, the power supply circuit also includes a relay 001XK, one end of the normally closed contact of the three-pole fuse 001FU is connected to one end of the three-pole load switch 001JS connected to the first socket, and the other end of the normally closed contact of the three-pole fuse 001FU is connected to the negative pole of the power supply via the normally closed contact of the thermal relay 001XS, the normally closed contact of the relay 002XK, and the relay 001XK.
[0015] Furthermore, in the circulating pump starting device described in the utility model, the power supply circuit also includes a reminder module connected to the contactor 001JA and used to prompt the working status of the circulating pump.
[0016] Furthermore, in the circulating pump starting device described in the utility model, the socket module also includes a second contact, and the second contact is grounded.
[0017] Furthermore, in the circulating pump starting device described in the utility model, the plug is an aviation plug.
[0018] The implementation of the circulating pump starting device of the utility model has the following beneficial effects: the circulating pump starting device of the utility model improves the traditional test box into a plug, which is convenient to use, easy to carry, and not easy to be accidentally touched on site. Moreover, compared with the test box, which requires a start and stop button respectively, the plug does not need to be provided with a start and stop button separately. After being inserted, the power circuit can be connected, which has a better use effect and is conducive to the convenience of the operation of the on-site personnel. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:
[0020] Figure 1 It is a structural schematic diagram of a circulating pump starting device according to an embodiment of the utility model;
[0021] Figure 2 yes Figure 1 The structural diagram of the plug;
[0022] Figure 3 It is a power supply circuit diagram of some embodiments of the utility model;
[0023] Figure 4 It is a signal flow diagram of the power supply circuit of some embodiments of the utility model. DETAILED DESCRIPTION
[0024] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.
[0025] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.
[0026] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0027] It should be noted that when an element is described as being "fixed to" another element, it may be directly on the other element, or one or more centered elements may exist therebetween. When an element is described as being "connected to" another element, it may be directly connected to the other element, or one or more centered elements may exist therebetween. When the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom" and the like are used to indicate an orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0028] It should be understood that although the words "first", "second" and the like may be used to limit components in the embodiments of the present utility model, this is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of the present application.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0030] The auxiliary water supply system storage tank (ASG001BA) of the nuclear power plant needs to be tested for monthly regular circulation sampling (T*ASG010). This test requires the use of a test box to start the 6LLA2P1 switch on the electrical panel to start the circulation pump (7ASG006PO) to circulate the auxiliary water supply system storage tank (ASG001BA) of the nuclear power plant for 20 hours and then notify the chemistry department to take samples. During the test, the test box needs to be kept plugged into the 6LLA2P1 switch, otherwise the pump cannot be started continuously. Considering the failure of the test (re-timing) caused by the on-site personnel accidentally touching the test box during the test, the uniqueness of this work in the operation of the nuclear power plant (the test box is inserted for 20 hours and placed on the ground), and the convenience of on-site work, after analyzing the 6LLA2P1 secondary wiring diagram, the circulation pump starting device was improved, and a special plug for the T*ASG010 test was designed.
[0031] refer to Figure 1 In a preferred embodiment, the circulating pump starting device of this embodiment includes a plug 40, a power supply 10, and a power supply circuit 20 connected to the circulating pump 30 and the power supply 10 respectively. Figure 2As shown, the plug 40 includes a housing, a first pin 401, a second pin 402, and a third pin 403. One end of the first pin 401 disposed in the housing is respectively connected to one end of the second pin 402 disposed in the housing and one end of the third pin 403 disposed in the housing, and the plug 40 is detachably connected to the power circuit 20. The plug 40 is used to connect the loop between the power circuit 20 and the power supply 10 to start the circulation pump 30.
[0032] Specifically, the power circuit 20 includes a socket module 301 adapted to the plug 40, and the socket module 301 includes a first socket 3011 connected to the positive pole of the power supply 10, a second socket 3012 connected to the negative pole of the power supply 10, and a third socket 3013. That is, the first pin 401 is connected to the first socket 3011, the second pin 402 is connected to the second socket 3012, and the third pin 403 is connected to the third socket 3013. When the plug 40 is inserted, the first socket 3011 is connected to the second socket 3012, and the first socket 3011 is connected to the third socket 3013.
[0033] In this embodiment, the circulating pump starting device improves the traditional test box into a plug 40, which is convenient to use, easy to carry, and not easy to be accidentally touched on site. Moreover, compared with the test box, which requires a start and stop button respectively, the plug 40 does not need to be provided with a start and stop button separately. When the plug is inserted, the power circuit can be connected, and when the plug is pulled out, the power circuit can be disconnected, which has a better use effect, is not easy to be accidentally touched on site, and is conducive to the convenience of the operation of the on-site personnel.
[0034] In some embodiments, Figure 3 As shown, the power circuit 20 further includes a contactor 001JA and a relay 002XK.
[0035] The second socket 3012 is connected to the negative pole of the power supply 10 via the first normally open contact of the contactor 001JA, and the third socket 3013 is connected to the negative pole of the power supply 10 via the first normally open contact of the relay 002XK. The contactor 001JA is also used to connect the circulation pump 30. The positive pole of the power supply 10 is connected to the end connected to the first normally open contact of the contactor 001JA and the second normally open contact of the relay 002XK via the second normally open contact of the contactor 001JA and the second normally open contact of the relay 002XK.
[0036] Specifically, the power supply circuit 20 further includes a two-pole circuit breaker 003JA connected to the two poles of the power supply 10 , and a three-pole load switch 001JS provided between the first socket 3011 and the connection line of the positive pole of the power supply 10 .
[0037] like Figure 4As shown, the working principle of the utility model is: when the 6LLA2P1 switch on the electrical panel is pushed in to close, the two-pole circuit breaker 003JA and the three-pole load switch 001JS are closed (that is, Figure 4 The 13-14 contacts of the three-pole load switch 001JS are turned on), and the power circuit 110V is connected to the first socket 3011 of the socket module 301. When the plug 40 is inserted, the first socket 3011 of the socket module 301 is connected to the third socket 3013, the relay 002XK is energized, and the first normally open contact of the relay 002XK is closed (that is, Figure 4 The 13-14 contacts of relay 002XK are turned on), and the second normally open contact of relay 002XK is closed (i.e., Figure 4 The 5-9 contacts of the relay 002XK in the socket module 301 are turned on. The first socket 3011 and the second socket 3012 of the socket module 301 are turned on, the contactor 001JA is excited, and the first normally open contact of the contactor 001JA is closed (ie, Figure 4 The A1-A2 contacts of the contactor 001JA are turned on), and the second normally open contact of the contactor 001JA is closed (i.e., Figure 4 The 13-14 contacts of the contactor 001JA are turned on), and the circulating pump 30 connected to the contactor 001JA is powered on. It can be understood that when the contactor 001JA loses magnetism, the downstream equipment connected thereto (such as the circulating pump 30) loses power and stops operating.
[0038] In some embodiments, Figure 3 As shown, the power circuit 20 further includes a relay 001XD, and the socket module 301 further includes a first contact 3014, the first contact 3014 is connected to the negative pole of the power source 10 via the normally open contact of the relay 001XD, and the second socket 3012 is connected to the negative pole of the power source 10 via the normally closed contact of the relay 001XD and the first normally open contact of the contactor 001JA in sequence. Optionally, the socket module 301 further includes a second contact 3015, and the second contact 3015 is grounded.
[0039] like Figure 4 As shown, the working principle of the utility model is: when the 6LLA2P1 switch on the electrical panel is pushed in to close, the two-pole circuit breaker 003JA and the three-pole load switch 001JS are closed (that is, Figure 4 The 13-14 contacts of the three-pole load switch 001JS are turned on), and the power circuit 110V is connected to the first socket 3011 of the socket module 301. When the plug 40 is inserted, the first socket 3011 of the socket module 301 is connected to the third socket 3013, the relay 002XK is energized, and the first normally open contact of the relay 002XK is closed (that is, Figure 4 The 13-14 contacts of relay 002XK are turned on), and the second normally open contact of relay 002XK is closed (i.e., Figure 4 The 5-9 contacts of the relay 002XK are turned on. The first socket 3011 and the second socket 3012 of the socket module 301 are connected, the contactor 001JA is excited, and the first normally open contact of the contactor 001JA is closed (ie, Figure 4 The A1-A2 contacts of the contactor 001JA are turned on), and the second normally open contact of the contactor 001JA is closed (i.e., Figure 4 The 13-14 contacts of the contactor 001JA are conducting. The relay 001XD is not connected and loses magnetism, and the normally open contact of the relay 001XD is disconnected (i.e. Figure 4 1-8 contacts of relay 001XD), the normally closed contacts of relay 001XD are closed (i.e., Figure 4 The 2-3 contacts of the relay 001XD are connected), and at this time, there is a ±110VDC voltage at both ends of the contactor 001JA, the contactor 001JA is closed, and the downstream equipment connected to the contactor 001JA (such as the circulating pump 30) is powered on. It can be understood that when the equipment needs to be shut down, the plug 40 is unplugged, the relay 002XK loses magnetism, the 5-9 contacts of the relay 002XK are disconnected, the ±110VDC at both ends of the contactor 001JA is lost, the contactor 001JA is disconnected, and the downstream equipment is shut down.
[0040] In some embodiments, Figure 3 As shown, the power supply circuit 20 of the circulating pump starting device of this embodiment also includes a thermal relay 001XS and a three-pole fuse 001FU connected in parallel. One end of the normally open contact of the thermal relay 001XS and the normally open contact of the three-pole fuse 001FU connected in parallel is connected to one end of the three-pole load switch 001JS connected to the first socket 3011, and the other end of the normally open contact of the thermal relay 001XS and the normally open contact of the three-pole fuse 001FU connected in parallel is connected to one end of the first normally closed contact of the relay 001XD connected to the first contact 3014. It can be understood that when the 6LLA2P1 switch is pushed in and closed, the three-pole load switch 001JS is in a closed state, and at this time, the three-pole fuse 001FU and the thermal relay 001XS are normally turned on.
[0041] In some embodiments, Figure 3 As shown, the power supply circuit 20 of the circulating pump starting device of this embodiment also includes a relay 001XK, one end of the normally closed contact of the three-pole fuse 001FU is connected to one end of the three-pole load switch 001JS connected to the first socket 3011, and the other end of the normally closed contact of the three-pole fuse 001FU is connected to the negative pole of the power supply 10 via the normally closed contact of the thermal relay 001XS, the normally closed contact of the relay 002XK, and the relay 001XK.
[0042] In this embodiment, the circulating pump starting device improves the traditional test box into a plug 40, which is convenient to use, easy to carry, and not easy to be accidentally touched on site. Moreover, compared with the test box, which needs to be provided with a start and stop button respectively, the plug 40 does not need to be provided with a start and stop button separately, and can connect the power circuit when the plug is inserted, and immediately disconnect the power circuit when the plug is pulled out, so that the use effect is better, it is not easy to be accidentally touched on site, and it is conducive to the convenience of the operation of the on-site personnel.
[0043] Optionally, the power supply circuit 20 also includes a reminder module connected to the contactor 001JA for reminding the working status of the circulation pump 30. When the plug 40 is inserted, the circulation pump 30 starts, and the reminder module gives a reminder after receiving the voltage signal at both ends of the contactor 001JA. The reminder method can be a sound reminder, an indicator light reminder, etc. Of course, the startup status of the circulation pump 30 and the corresponding instrument control alarm can also be fed back to the main control system of the auxiliary water supply system on the electrical panel. When the plug 40 is pulled out, the circulation pump 30 is fed back to stop running, and the main control instrument control alarm disappears.
[0044] As an option, the plug 40 of this embodiment adopts an aviation plug. The aviation plug has the characteristics of small size, almost no possibility of accidental contact after being plugged in, does not affect the protection of the electrical panel itself, and is easy to carry.
[0045] In some embodiments, Figure 4 As shown, according to the requirements of the auxiliary water supply system of the nuclear power plant, the power supply circuit can also include relay 001XR and drawer test position micro switch 001SM, and the 2-10 normally closed contacts of relay 002XK are connected in series with the 3-4 normally open contacts of relay 001XR.
[0046] One end of the 2-10 normally closed contacts of the series-connected relay 002XK and the 3-4 normally open contacts of the relay 001XR is connected to one end of the 13-14 normally open contacts of the three-pole load switch 001JS connected to the first socket 3011, and the other end of the 2-10 normally closed contacts of the series-connected relay 002XK and the 3-4 normally open contacts of the relay 001XR is connected to one end of the 2-3 normally closed contacts of the relay 001XD connected to the second socket. The 1-2 contacts of the drawer test position micro switch 001SM are respectively connected to the positive pole of the power supply 10 and one end of the 13-14 normally open contacts of the three-pole load switch 001JS connected to the first socket 3011.
[0047] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.
Claims
1. A circulating pump starting device, It is characterized in that The starting device comprises a plug (40), a power source (10), and a power circuit (20) connected to a circulation pump (30) and the power source (10) respectively, wherein the plug (40) comprises a housing, a first pin (401), a second pin (402), and a third pin (403); One end of the first pin (401) disposed in the housing is respectively connected to one end of the second pin (402) disposed in the housing and one end of the third pin (403) disposed in the housing, and the plug (40) is detachably connected to the power supply circuit (20); The plug (40) is used to connect the loop between the power circuit (20) and the power source (10) so as to start the circulation pump (30).
2. The circulating pump starting device according to claim 1, It is characterized in that The power circuit (20) comprises a socket module (301) adapted to the plug (40), the socket module (301) comprising a first socket (3011) connected to the positive pole of the power source (10), a second socket (3012) connected to the negative pole of the power source (10), and a third socket (3013); When the plug (40) is inserted, the first socket (3011) is connected to the second socket (3012), and the first socket (3011) is connected to the third socket (3013).
3. The circulating pump starting device according to claim 2, It is characterized in that The power supply circuit (20) further includes a contactor 001JA and a relay 002XK; The second socket (3012) is connected to the negative pole of the power supply (10) via the first normally open contact of the contactor 001JA, and the third socket (3013) is connected to the negative pole of the power supply (10) via the first normally open contact of the relay 002XK. The contactor 001JA is also used to connect the circulation pump (30). The positive pole of the power supply (10) is connected to the end of the first normally open contact of the contactor 001JA connected to the second socket (3012) via the second normally open contact of the contactor 001JA and the second normally open contact of the relay 002XK.
4. The circulating pump starting device according to claim 3, It is characterized in that The power supply circuit (20) further includes a relay 001XD, and the socket module (301) further includes a first contact (3014), wherein the first contact (3014) is connected to the negative pole of the power supply (10) via the normally open contact of the relay 001XD, and the second socket (3012) is connected to the negative pole of the power supply (10) via the normally closed contact of the relay 001XD and the first normally open contact of the contactor 001JA in sequence.
5. The circulating pump starting device according to claim 4, It is characterized in that The power supply circuit (20) further comprises a two-pole circuit breaker 003JA connected to the two poles of the power supply (10), and a three-pole load switch 001JS arranged between the connection line between the first socket (3011) and the positive pole of the power supply (10).
6. The circulating pump starting device according to claim 5, It is characterized in that The power supply circuit (20) also includes a thermal relay 001XS and a three-pole fuse 001FU connected in parallel; one end of the normally open contact of the thermal relay 001XS and the normally open contact of the three-pole fuse 001FU connected in parallel is connected to one end of the three-pole load switch 001JS connected to the first socket (3011), and the other end of the normally open contact of the thermal relay 001XS and the normally open contact of the three-pole fuse 001FU connected in parallel is connected to one end of the first normally closed contact of the relay 001XD connected to the first contact (3014).
7. The circulating pump starting device according to claim 6, It is characterized in that The power supply circuit (20) also includes a relay 001XK, one end of the normally closed contact of the three-pole fuse 001FU is connected to one end of the three-pole load switch 001JS connected to the first socket (3011), and the other end of the normally closed contact of the three-pole fuse 001FU is connected to the negative pole of the power supply (10) via the normally closed contact of the thermal relay 001XS, the normally closed contact of the relay 002XK, and the relay 001XK.
8. The circulating pump starting device according to claim 3, It is characterized in that The power supply circuit (20) also includes a reminder module connected to the contactor 001JA and used to remind the working status of the circulation pump (30).
9. The circulating pump starting device according to any one of claims 2 to 8, It is characterized in that The socket module (301) further comprises a second contact (3015), wherein the second contact (3015) is grounded.
10. The circulating pump starting device according to claim 1, It is characterized in that The plug (40) is an aviation plug.