Urea high-pressure pump sealing water on-line monitoring device

Abstract

The utility model relates to the technical field of urea production devices, in particular to an online monitoring device for sealing water of a urea high-pressure pump, which is characterized in that a mounting frame is fixedly connected to the upper edge of a desalting water tank, and an ammonia nitrogen sensor electrically connected with an upper computer is fixedly connected to the mounting frame; a lifting device electrically connected with the upper computer is installed on the upper edge of the desalting water tank, the lifting device is connected with a sampling barrel corresponding to the ammonia nitrogen sensor, the side wall of the sampling barrel is fixedly connected with a clamping ring, the clamping ring is coaxially sleeved with a vertical rod which is in vertical sliding connection with the clamping ring, and the vertical rod is coaxially sleeved with a supporting spring; the upper end and the lower end of the supporting spring are fixedly connected with the blocking disc and the clamping ring correspondingly, the lower end of the vertical rod is fixedly connected with a connecting rod, the connecting rod is fixedly connected with a plug rod correspondingly inserted into the drainage hole, and the plug rod is fixedly connected with a sealing ring. And the mounting frame is fixedly connected with an electronic telescopic rod which is electrically connected with the upper computer and corresponds to the baffle disc.

Description

Technical Field

[0001] This utility model relates to the technical field of urea production equipment, and in particular to an online monitoring device for the sealing water of a urea high-pressure pump. Background Technology

[0002] With social development and progress, urea production enterprises are moving towards the goals of low-carbon emission reduction and pollution control. Traditionally, in the production process of urea enterprises, the sealing water of the urea high-pressure pump is generally used only once and then directly discharged into the sewage pipe, posing a certain degree of environmental harm. To achieve energy conservation, emission reduction, and pollution-free operation, the sealing water (i.e., demineralized water) is often recycled. This not only reduces the discharge of ammonia-containing wastewater and nitrogen-containing wastewater but also saves a large amount of demineralized water, leading to improved economic benefits. However, existing sealing water recycling systems often lack corresponding ammonia nitrogen monitoring devices, resulting in a large amount of ammonia in the demineralized water during the recycling process. This shortens the service life of the mechanical seal, easily causing mechanical seal leakage and environmental accidents. Therefore, this application proposes an online monitoring device for the sealing water of a urea high-pressure pump. Utility Model Content

[0003] To address the above situation and overcome the shortcomings of existing technologies, this utility model provides an online monitoring device for the sealing water of a urea high-pressure pump. The technical solution it provides includes a demineralized water tank and a host computer. The demineralized water tank has a mounting frame fixedly connected to its upper edge, and an ammonia nitrogen sensor electrically connected to the host computer is fixedly connected to the mounting frame. A lifting device electrically connected to the host computer is installed along the upper edge of the demineralized water tank, and the lifting device is connected to a sampling cylinder corresponding to the ammonia nitrogen sensor. The bottom of the sampling cylinder has a drainage hole. A retaining ring is fixedly connected to the side wall of the sample cylinder. A vertical rod is coaxially fitted with the retaining ring and slidably connected to it. A baffle is coaxially fixedly connected to the upper end of the vertical rod. A support spring is coaxially fitted on the vertical rod. The upper and lower ends of the support spring are fixedly connected to the baffle and the retaining ring, respectively. A connecting rod is fixedly connected to the lower end of the vertical rod. A plug rod corresponding to the drainage hole is fixedly connected to the connecting rod. A sealing ring that abuts against the bottom of the sampling cylinder is coaxially fixedly connected to the plug rod. An electronic telescopic rod that is electrically connected to the upper electromechanical unit and corresponds to the baffle is fixedly connected to the mounting bracket.

[0004] Preferably, the inner wall of the retaining ring is provided with a guide groove, and the outer wall of the vertical rod is fixedly connected with a guide key that is slidably connected to the guide groove.

[0005] Preferably, the lifting device includes a base fixedly connected to the upper edge of the desalination tank, two longitudinally spaced sliding rods fixedly connected to the base, a top support fixedly connected to the upper ends of the two sliding rods, a lead screw rotatably connected to the opposite end of the top support and the base, the lead screw being located between the two sliding rods, a motor electrically connected to the upper electromechanical unit and used to drive the lead screw fixedly connected to the upper end of the top support, a lifting frame threadedly connected to the lead screw, the front and rear ends of the lifting frame being slidably connected to the two sliding rods respectively, a sampling rod fixedly connected to the lifting frame, and the sampling rod being fixedly connected to the sampling cylinder.

[0006] The beneficial effects of this utility model are:

[0007] This application utilizes a device installed in the demineralized water tank of a high-pressure pump sealing water system to facilitate monitoring of ammonia nitrogen concentration in the sealing water (i.e., demineralized water). Specifically, during operation, a lifting device is controlled by a host computer to move a sampling cylinder into the demineralized water tank to obtain a water sample. The lifting device then elevates the sampling cylinder and water sample to an ammonia nitrogen sensor. The sensor instantly detects the ammonia nitrogen concentration in the water sample and transmits the data to the host computer. Based on the transmitted ammonia nitrogen concentration, personnel can promptly replace the demineralized water to prevent the presence of large amounts of ammonia in the demineralized water, which could corrode the mechanical seal and lead to leakage and environmental accidents. Attached Figure Description

[0008] Figure 1 This is a first-person perspective stereoscopic view of the present invention.

[0009] Figure 2 This is an enlarged view of region A in the first-person perspective stereoscopic view of this utility model.

[0010] Figure 3 This is a partial stereoscopic view of the present invention from a second perspective.

[0011] Figure 4 This is a partial stereoscopic view of the present invention from a third-person perspective.

[0012] Figure 5 This is a partial stereoscopic view of the present invention from a fourth perspective.

[0013] Figure 6 This is a partial three-dimensional view from the fifth perspective of this utility model.

[0014] Figure Labels

[0015] 1. Demineralized water tank; 2. Mounting frame; 3. Ammonia nitrogen sensor; 4. Lifting device; 5. Sampling cylinder; 6. Drain hole; 7. Snap ring; 8. Vertical rod; 9. Baffle plate; 10. Support spring; 11. Connecting rod; 12. Plug rod; 13. Sealing ring; 14. Electronic telescopic rod; 15. Guide groove; 16. Guide key; 17. Base support; 18. Slide rod; 19. Top support; 20. Lead screw; 21. Motor; 22. Lifting frame; 23. Sampling rod groove; 47. Universal wheel; 48. Shock-absorbing spring; 49. Handrail; 50. Baffle cover; 51. Support spring; 52. Arc plate. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-6 The specific embodiments of this utility model will be described in further detail.

[0017] In Example 1, the technical solution is as follows: Existing urea high-pressure pump sealing water circulation systems are generally equipped with a demineralized water tank 1. This application utilizes a demineralized water tank 1 within the existing high-pressure pump sealing water system to facilitate monitoring of the ammonia nitrogen concentration in the sealing water (i.e., the demineralized water). Specifically, during use, the lifting device 4 is controlled by a host computer to operate, thereby driving the sampling cylinder 5 into the demineralized water tank 1 to obtain a water sample. The lifting device 4 then raises the sampling cylinder 5 along with the water sample to the ammonia nitrogen sensor 3, which is fixedly connected to the mounting frame 2. The ammonia nitrogen sensor 3 can instantly detect the ammonia nitrogen concentration in the water sample and transmit the data to the host computer. Based on the transmitted ammonia nitrogen concentration, personnel can promptly replace the demineralized water to prevent the presence of large amounts of ammonia in the demineralized water, which could corrode the mechanical seal and lead to leakage and environmental accidents.

[0018] In Example 2, based on Example 1, specifically, during use, the sealed water (i.e., demineralized water) in the demineralized water tank 1 is periodically sampled and tested via a host computer. Specifically, the host computer controls the motor 21 of the lifting device 4 to rotate forward. The forward rotation of the motor 21 drives the lead screw 20, which is rotatably connected between the top support 19 and the bottom support 17, to rotate forward. The forward rotation of the lead screw drives the lifting frame 22, which is threadedly connected to it. The lifting frame 22 is slidably connected to the slide rod 18. Therefore, the forward rotation of the lead screw 20 causes the lifting frame 22 to move downward along the slide rod 18. Consequently, the sampling rod 23 moves downward along with the lifting frame 22, and the sampling cylinder 5, which is fixedly connected to the sampling rod 23, also moves downward synchronously. Thus, the sampling cylinder 5 moves deeper into the demineralized water tank 1. The device moves to obtain a water sample from the sealed water. After sampling, the host computer controls the motor 21 to reverse. The reverse rotation of the motor 21 drives the lead screw 20 to reverse, which in turn drives the lifting frame 22 to move upward along the slide rod 18. Consequently, the sampling rod 23, along with the sampling cylinder 5, also moves upward. After the sampling cylinder 5 moves upward and the water sample submerges the ammonia nitrogen sensor 3, the host computer shuts off the motor 21, thus stopping the lifting device 4. At this time, the ammonia nitrogen sensor 3 immediately measures the ammonia nitrogen concentration in the water sample and transmits the data to the host computer. Based on the transmitted ammonia nitrogen concentration, the staff can promptly replace the demineralized water to prevent a large amount of ammonia from existing in the demineralized water and corroding the mechanical seal, which could lead to leakage and environmental accidents.

[0019] After sampling is completed as described above and the ammonia nitrogen concentration of the water sample is detected by the ammonia nitrogen sensor 3, the electronic telescopic rod 14 should be extended by the host computer to facilitate the next use. The lower end of the electronic telescopic rod 14 is the telescopic end, so the extension of the electronic telescopic rod 14 will press down on the baffle 9, thereby causing the vertical rod 8 to move downward along the retaining ring 7. At the same time, the support spring 10 will also be compressed. When the vertical rod 8 moves downward, the connecting rod 11 moves downward accordingly. When the connecting rod 11 moves downward, the plug rod 12 and the sealing ring 13 move downward and disengage from the drain hole 6. Then, the water sample that has been tested in the sampling cylinder 5 will be discharged through the drain hole 6 to avoid affecting the next sampling. After the water sample in the sampling tube 5 is discharged, the electronic telescopic rod 14 is retracted and reset by the host computer. As the electronic telescopic rod 14 resets, the support spring 10 will automatically extend and reset, and drive the vertical rod 8 to move upward and reset. Then the connecting rod 11 will also move upward and reset. The plug rod 12, which is fixedly connected to the connecting rod 11, will also reset upward and re-insert into the drain hole 6 to seal it. The sealing ring 13 will also abut against the lower end of the sampling tube 5 again to prevent water leakage during the next sampling.

[0020] In the third embodiment, based on the second embodiment, the retaining ring 7 is provided with a guide groove 15 that is slidably connected to the guide key 16 on the vertical rod 8, thereby restricting the vertical rod 8 to move only vertically and preventing it from rotating and affecting the correspondence between the plug rod 12 and the drain hole 6.

Claims

1. A urea high-pressure pump seal water on-line monitoring device, comprising a desalted water tank (1) and an upper computer, characterized in that, The desalination tank (1) is fixedly connected with a mounting frame (2) on the upper edge, the mounting frame (2) is fixedly connected with an ammonia nitrogen sensor (3) electrically connected with the upper computer, the desalination tank (1) is provided with a lifting device (4) electrically connected with the upper computer on the upper edge, the lifting device (4) is connected with a sampling cylinder (5) corresponding to the ammonia nitrogen sensor (3), the bottom of the sampling cylinder (5) is provided with a drain hole (6), the side wall of the sampling cylinder (5) is fixedly connected with a snap ring (7), the snap ring (7) is coaxially sleeved with a vertical rod (8) which is vertically slidably connected with the snap ring (7), the upper end of the vertical rod (8) is fixedly connected with a baffle disc (9), the vertical rod (8) is coaxially sleeved with a supporting spring (10), the upper and lower ends of the supporting spring (10) are fixedly connected with the baffle disc (9) and the snap ring (7) respectively, the lower end of the vertical rod (8) is fixedly connected with a connecting rod (11), the connecting rod (11) is fixedly connected with a plug rod (12) which is correspondingly inserted with the drain hole (6), the plug rod (12) is coaxially fixedly connected with a sealing ring (13) which abuts against the bottom of the sampling cylinder (5), the mounting frame (2) is fixedly connected with an electronic telescopic rod (14) which is electrically connected with the upper computer and corresponds to the baffle disc (9).

2. The on-line monitoring device for seal water of a high-pressure urea pump according to claim 1, characterized in that, The inner wall of the snap ring (7) is provided with a guide groove (15), and the outer wall of the vertical rod (8) is fixedly connected with a guide key (16) which is slidably connected with the guide groove (15).

3. The on-line monitoring device for seal water of a high-pressure urea pump according to claim 1, characterized in that, The lifting device (4) comprises a bottom support (17) fixedly connected with the upper edge of the desalination tank (1), the bottom support (17) is fixedly connected with two slide rods (18) which are arranged in longitudinal direction, the upper ends of the two slide rods (18) are fixedly connected with a top support (19), the top support (19) is rotatably connected with a lead screw (20) at the opposite end of the bottom support (17), the lead screw (20) is located in the middle of the two slide rods (18), the upper end of the top support (19) is fixedly connected with a motor (21) which is electrically connected with the upper computer and is used for driving the lead screw (20), the lead screw is threadedly connected with a lifting frame (22), the front and rear ends of the lifting frame (22) are slidably connected with the two slide rods (18) respectively, the lifting frame (22) is fixedly connected with a sampling rod (23), and the sampling rod (23) is fixedly connected with the sampling cylinder (5).

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