Deionizer with sampling port for fuel cell system
By designing a deionizer with a sampling port in the fuel cell system, regular inspection and timely replacement of the resin layer are achieved, solving the problem of the deionizer not being able to be replaced in time after adsorption saturation, and improving the safety of the system and the life of the fuel cell stack.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-04-03
AI Technical Summary
In existing fuel cell systems, the deionizer cannot be replaced in time after adsorption saturation, which leads to an increase in the conductivity of the coolant, affecting the life of the fuel cell stack and vehicle insulation, and posing a safety hazard.
Design a deionizer with a sampling port, which includes a sampling cylinder and a sampling port to facilitate regular testing of the adsorption rate of the resin layer and timely replacement of the deionizer.
By regularly testing the adsorption rate of the resin layer and replacing the deionizer in a timely manner, the ion concentration of the coolant can be reduced, insulation failures and reduced fuel cell life can be minimized, and system safety can be improved.
Smart Images
Figure CN224082433U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of deionizer technology for fuel cells, specifically a deionizer with a sampling port for use in a fuel cell system. Background Technology
[0002] Fuel cells generate a lot of heat during operation, similar to an engine. During cold starts, they require coolant to conduct heat to ensure the stack functions properly. Therefore, the thermal management system is one of the core subsystems of a fuel cell, and the coolant is the main working medium of the thermal management system.
[0003] The coolant continuously circulates within the system. Even though the fuel cell-specific coolant initially added has undergone rigorous deionization filtration, various ions are continuously released from components made of different materials and manufactured using different processes as the system operates. These ions are released into the coolant and circulate with it, causing an increase in the coolant's conductivity and consequently reducing the system's insulation value. To protect the fuel cell stack and prevent the risk of bipolar plate breakdown, the cooling system needs to include a deionization device to absorb the continuously released ions and reduce conductivity.
[0004] Currently, many fuel cell manufacturers use fully filled resin deionizers to adsorb ions that precipitate during coolant circulation. The conductivity of the coolant is periodically measured with a conductivity meter, and the deionizer is replaced when the conductivity exceeds a preset value.
[0005] However, many fuel cell manufacturers currently test the conductivity of the coolant during vehicle maintenance, but do not sample and inspect the resin in the deionizer. When the deionizer becomes saturated (failed), the number of ions in the coolant of the fuel cell system will increase over time, affecting the lifespan of the fuel cell stack and causing the vehicle's insulation value to drop, leading to an insulation fault. This can then cause the high-voltage power to disconnect, resulting in the vehicle breaking down and posing a potential traffic accident hazard.
[0006] Therefore, the applicant has developed a new technical solution in the actual production process to solve the above-mentioned technical problems. Utility Model Content
[0007] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a deionizer with a sampling port for use in fuel cell systems, which has the advantage of facilitating the sampling and testing of the resin inside the deionizer.
[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0009] This utility model provides a deionizer with a sampling port for a fuel cell system, comprising a hollow cylindrical deionizer body, a funnel-shaped outlet and an inlet disposed at both ends of the deionizer body, a sampling tube that enters the deionizer body on the side wall of the deionizer body, one end of the sampling tube being located inside the deionizer body and forming a filter tube, and the other end extending to the outer wall of the deionizer body and having a sealing member for sealing the opening of the sampling tube, and the sampling tube being filled with a resin layer.
[0010] By adopting the above technical solution, the deionizer body is also filled with a second resin layer. The inlet and outlet of the coolant allow the coolant to flow through the second resin layer in the deionizer body, adsorbing the ions precipitated in the coolant circulation. At this time, the sampling tube is located in the deionizer body, and the coolant also flows through the first resin layer filled in the sampling tube through the filter tube, allowing the first resin layer to also adsorb the ions precipitated in the coolant circulation. When it is necessary to sample and test the resin in the deionizer, the closure is opened, and the first resin layer is taken out from the sampling tube for testing. This facilitates the removal of the resin in the sampling column for adsorption rate testing, improves the accuracy of understanding the deionizer's lifespan, enables timely replacement of the deionizer, and reduces the occurrence of insulation failures and reduced fuel cell lifespan caused by high coolant ion concentration.
[0011] Preferably, the sampling tube is distributed near the water outlet, and the sampling port extends from one end inside the deionizer body to the center of the deionizer body.
[0012] Preferably, the end of the sampling tube away from the inner wall of the deionizer body is a filter tube, and the end closer to the inner wall of the deionizer body is a plastic tube. The openings of the filter tube and the plastic tube are distributed opposite to each other and arranged together.
[0013] Preferably, the resin layer is distributed inside the filter cylinder.
[0014] Preferably, the sampling tube further includes an installation tube disposed on the outer wall of the deionizer body and communicating with the plastic tube, and the sealing member includes a nut sleeved on the outer wall of the installation tube and threadedly connected to the outer wall of the installation tube, and the inner wall of the nut is provided with a sealing post inserted into the installation tube.
[0015] Preferably, the sampling tube slides into the stop block at the position of the plastic tube, one end of the stop block abuts against the resin layer, and the other end abuts against the end of the sealing column away from the nut.
[0016] Preferably, the stop includes a disc that is slidably connected inside the plastic cylinder and cooperates with the inner wall of the plastic cylinder, and a pull rod disposed on the side of the disc away from the resin layer and whose length is distributed along the length direction of the plastic cylinder.
[0017] Preferably, the sampling tubes are horizontally distributed.
[0018] Preferably, the outer wall of the closed column is provided with an annular groove, and a sealing ring is provided in the annular groove to abut against the inner wall of the mounting cylinder.
[0019] Preferably, both the plastic tube and the filter tube are inner and outer tubes. The side wall of the deionizer body has a placement hole for placing one end of the inner plastic tube. One end of the outer plastic tube is fixed to the inner wall of the deionizer body. The outer plastic tube and the inner plastic tube are coaxially fixedly connected to the two filter tubes respectively. The inner plastic tube is in communication with the mounting tube. The baffle is located inside the inner plastic tube. The resin layer is located inside the inner filter tube. One end of the sealing column abuts against both the baffle and one end of the inner plastic tube.
[0020] The beneficial effects of this utility model are as follows: the deionizer body is also filled with a second resin layer. The inlet and outlet of the coolant allow the coolant to flow through the second resin layer in the deionizer body, adsorbing the ions precipitated in the coolant circulation. At this time, the sampling tube is located in the deionizer body, and the coolant also flows through the first resin layer filled in the sampling tube through the filter tube, allowing the first resin layer to also adsorb the ions precipitated in the coolant circulation. When it is necessary to sample and test the resin in the deionizer, the closure can be opened, and the first resin layer can be taken out from the sampling tube for testing. This makes it convenient to take out the resin in the sampling column for adsorption rate testing, improves the accuracy of understanding the life of the deionizer, enables timely replacement of the deionizer, and reduces the occurrence of insulation failure and reduced fuel cell life caused by high coolant ion concentration. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of this embodiment;
[0023] Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle;
[0024] Figure 3 This is a schematic diagram illustrating the structure of the mounting cylinder after the nut is unscrewed in this embodiment.
[0025] Explanation of reference numerals in the attached figures:
[0026] In the diagram: 1. Deionizer body; 11. Outlet; 12. Inlet; 13. Sampling tube; 131. Filter screen tube; 132. Resin layer one; 133. Plastic tube; 134. Mounting tube; 135. Nut; 136. Sealing column; 137. Sealing ring; 14. Resin layer two; 15. Stop block; 151. Disc; 152. Pull rod. Detailed Implementation
[0027] 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.
[0028] A deionizer with a sampling port for use in a fuel cell system, such as Figure 1 and Figure 2 The device includes a hollow cylindrical deionizer body 1, a funnel-shaped outlet 11 and an inlet 12 located at both ends of the deionizer body 1, and a resin layer 2 14 filled inside the deionizer body 1. A sampling cylinder 13 is provided on the side wall of the deionizer body 1, which enters the deionizer body 1 and is located inside the resin layer 2 14. One end of the sampling cylinder 13 is located inside the deionizer body 1 and is a filter cylinder 131, while the other end extends to the outer wall of the deionizer body 1 and is provided with a sealing element to close the opening of the sampling cylinder 13. The sampling cylinder 13 is filled with a resin layer 132, which is distributed inside the filter cylinder 131. The resin layer 132 and the resin layer 2 14 are made of the same material and are installed into the deionizer body 1 at the same time when the deionizer leaves the factory. One end of the sampling tube 13 is located inside the deionizer body 1 and is a filter tube 131. That is, when the sampling tube 13 is inside the deionizer body 1, it is also convenient for the coolant to flow through the filter and into the resin layer 132 inside the sampling tube 13. At this time, the resin in the deionizer that adsorbs ions of the coolant includes resin layer 132 and resin layer 14.
[0029] like Figure 1 and Figure 2The coolant flows in and out through the inlet 12 and outlet 11, allowing the coolant to flow through the resin layer 14 inside the deionizer body 1, where it adsorbs ions precipitated during coolant circulation. The sampling cylinder 13 is located within the resin layer 14 inside the deionizer body 1 and is preferentially horizontally distributed. The coolant also flows through the filter cylinder 131 and through the resin layer 132 filled in the sampling cylinder 13, allowing the resin layer 132 to also adsorb ions precipitated during coolant circulation. At this time, the resin layer 132 and the resin layer 14 work simultaneously within the deionizer. When it is necessary to sample and test the resin inside the deionizer to understand its lifespan, the closure is opened, and the resin layer 132 is removed from the sampling cylinder 13 for testing. This facilitates the removal of resin from the sampling column for adsorption rate testing, improving the accuracy of understanding the deionizer's lifespan, enabling timely replacement of the deionizer, and reducing insulation failures and reduced fuel cell lifespan caused by high coolant ion concentrations.
[0030] like Figure 1 and Figure 2 The sampling cylinder 13 is distributed near the water outlet 11, and the sampling port is located inside the deionizer body 1. One end of the sampling port extends to the center of the deionizer body 1, which facilitates the adsorption of ions precipitated in the coolant by the resin layer 132.
[0031] like Figure 1 and Figure 2 The sampling cylinder 13 has a filter screen cylinder 131 at one end away from the inner wall of the deionizer body 1, and a plastic cylinder 133 at the other end near the inner wall of the deionizer body 1. The plastic cylinder 133 facilitates the installation of the filter screen cylinder 131. The openings of the filter screen cylinder 131 and the plastic cylinder 133 are distributed opposite to each other and set together.
[0032] like Figure 1 and Figure 2 and Figure 3 The sampling cylinder 13 also includes an installation cylinder 134 disposed on the outer wall of the deionizer body 1 and communicating with the plastic cylinder 133. The installation cylinder 134, the plastic cylinder 133 and the screen cylinder are all coaxially distributed, and the screen cylinder is communicating with the plastic cylinder 133, and the installation cylinder 134 is communicating with the plastic cylinder 133. The sealing component includes a nut 135 sleeved on the outer wall of the installation cylinder 134 and threadedly connected to the outer wall of the installation cylinder 134. The longitudinal section of the nut 135 is a U-shaped frame with the opening facing the installation cylinder 134. The inner wall of the nut 135 is provided with a sealing post 136 inserted into the installation cylinder 134. At this time, the sealing post 136 is located at the bottom of the U-shaped frame.
[0033] like Figure 1 and Figure 2When it is necessary to seal the mounting cylinder 134, simply screw the nut 135 into the outer wall of the mounting cylinder 134. At this time, the sealing post 136 is inserted into the mounting cylinder 134 and contacts the inner wall of the mounting cylinder 134, which facilitates sealing the mounting cylinder 134.
[0034] like Figure 1 and Figure 2 The sampling cylinder 13 slides into the stop block 15 at the position of the plastic cylinder 133. One end of the stop block 15 abuts against the resin layer 132, and the other end abuts against the end of the sealing column 136 away from the nut 135. The stop block 15 is located inside the plastic cylinder 133, and the stop block 15 is provided with a sealing ring that abuts against the inside of the plastic cylinder 133.
[0035] like Figure 1 and Figure 2 The baffle 15 prevents the resin layer 132 from being immediately flushed out of the mounting cylinder 134 by the coolant after the operator unscrews the nut 135. The resin layer 132 will only flow out of the mounting cylinder 134 immediately after the operator removes the baffle 15. At this point, because there is coolant inside the deionizer body 1, the resin layer 132 will be flushed out. Furthermore, during the contact between the resin layer 132 and the coolant, leakage of the resin layer 132 is further ensured.
[0036] like Figure 1 and Figure 2 The outer wall of the sealing column 136 has an annular groove, and a sealing ring 137 is provided in the annular groove to abut against the inner wall of the mounting cylinder 134. The sealing ring 137 further reduces leakage of resin layer 132 and coolant.
[0037] like Figure 1 and Figure 2 The stop block 15 includes a disc 151 that is slidably connected inside the plastic cylinder 133 and cooperates with the inner wall of the plastic cylinder 133, and a pull rod 152 that is disposed on the side of the disc 151 away from the resin layer 132 and whose length is distributed along the length direction of the plastic cylinder 133. One end of the pull rod 152 abuts against the sealing post 136, so that the side of the disc 151 away from the pull rod 152 abuts against the resin layer 132, and a sealing ring is disposed on the annular sidewall of the disc 151.
[0038] like Figure 1 and Figure 2Both the plastic cylinder 133 and the filter cylinder 131 consist of inner and outer cylinders. A placement hole is provided on the side wall of the deionizer body 1 for placing one end of the inner plastic cylinder 133. The placement hole is located inside the mounting cylinder 14, allowing the inner plastic cylinder 133 to move back and forth within it. The placement hole also supports the inner plastic cylinder 133. One end of the outer plastic cylinder 133 is fixed to the inner wall of the deionizer body 1. Both the outer and inner plastic cylinders 133 are coaxially and fixedly connected to the two filter cylinders 131. The plastic cylinder 133 is... The device consists of an inner plastic cylinder 133 inserted into the placement hole and an outer plastic cylinder 133 fitted over the inner plastic cylinder 133. The outer plastic cylinder 133 is fixed to the inner wall of the deionizer body 1. There is a gap between the inner and outer plastic cylinders 133. The inner plastic cylinder 133 is connected to the mounting cylinder 134. The baffle 15 is located inside the inner plastic cylinder 133. The resin layer 132 is located inside the inner filter cylinder 131. One end of the sealing column 136 abuts against both the baffle 15 and one end of the inner plastic cylinder 133. When one end of the inner plastic cylinder 133 is abutted by the sealing column 136, the end of the inner filter cylinder 131 away from the inner plastic cylinder 133 abuts against the inner wall of the outer filter cylinder 131, thereby fixing the positions of the inner plastic cylinder 133 and the inner filter cylinder 131.
[0039] The purpose of setting up two filter cylinders 131 and two plastic cylinders 133 for easy installation is to facilitate the removal of the inner filter cylinder 131 and inner plastic cylinder 133 containing the resin layer 132 from the placement hole. After being taken to the laboratory, the baffle 15 can be removed from the inner plastic cylinder 133 to facilitate the removal of the sampled resin for resin testing.
[0040] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A deionizer with a sampling port for a fuel cell system, comprising a hollow cylindrical deionizer body (1), a water outlet (11) and a water inlet (12) in the shape of a funnel provided at both ends of the deionizer body (1), characterized in that, The side wall of the deionizer body (1) is provided with a sampling cylinder (13) which enters the deionizer body (1), one end of the sampling cylinder (13) is located in the deionizer body (1) and is a filter screen cylinder (131), the other end extends out of the outer wall of the deionizer body (1) and is provided with a closure element which closes the cylinder port of the sampling cylinder (13), and the sampling cylinder (13) is filled with a resin layer one (132).
2. A deionizer with a sampling port for a fuel cell system as set forth in claim 1, characterized by The sampling cylinder (13) is distributed close to the water outlet (11), and the sampling port located in the deionizer body (1) extends to the central position inside the deionizer body (1).
3. A deionizer with a sampling port for a fuel cell system according to claim 1 or 2, characterized in that, The end of the sampling cylinder (13) away from the inner wall of the deionizer body (1) is a filter screen cylinder (131), and the end close to the inner wall of the deionizer body (1) is a plastic cylinder (133), the cylinder port of the filter screen cylinder (131) and the cylinder port of the plastic cylinder (133) are oppositely distributed and arranged together.
4. A sampler-equipped deionizer for a fuel cell system according to claim 3, wherein The resin layer one (132) is distributed in the filter screen cylinder (131).
5. A sampler-equipped deionizer for a fuel cell system as set forth in claim 4, wherein The sampling cylinder (13) further comprises a mounting cylinder (134) arranged on the outer wall of the deionizer body (1) and in communication with the plastic cylinder (133), the closure element comprises a nut (135) sleeved on the outer wall of the mounting cylinder (134) and threadedly connected with the outer wall of the mounting cylinder (134), and the inner wall of the nut (135) is provided with a closure column (136) inserted into the mounting cylinder (134).
6. A sampler-equipped deionizer for a fuel cell system as set forth in claim 5, characterized by The sampling cylinder (13) slides into the stop block (15) at the position of the plastic cylinder (133), one end of the stop block (15) abuts against the resin layer one (132), and the other end abuts against the end of the closure column (136) away from the nut (135).
7. A sampler ported deionizer for a fuel cell system as set forth in claim 6, characterized by, The stop block (15) comprises a disc (151) slidably connected in the plastic cylinder (133) and matched with the inner wall of the plastic cylinder (133), and a pull rod (152) arranged on the side of the disc (151) away from the resin layer one (132) and having a length distributed along the length direction of the plastic cylinder (133).
8. A sampler ported deionizer for a fuel cell system as set forth in claim 6, characterized by, The sampling cylinder (13) is horizontally distributed.
9. A sampling ported deionizer for use in a fuel cell system as set forth in claim 5, wherein, The outer wall of the closure column (136) is provided with an annular groove, and the annular groove is provided with a sealing ring (137) abutting against the inner wall of the mounting cylinder (134).
10. A deionizer with a sampling port for a fuel cell system as set forth in claim 6, wherein The plastic cylinder (133) and the filter screen cylinder (131) are both inner and outer cylinders, the side wall of the deionizer body (1) is provided with a placement hole for placing one end of the inner plastic cylinder (133), one end of the outer plastic cylinder (133) is fixed on the inner wall of the deionizer body (1), the outer plastic cylinder (133) and the inner plastic cylinder (133) are coaxially fixedly connected with the two filter screen cylinders (131) respectively, the inner plastic cylinder (133) is in communication with the mounting cylinder (134), the stop block (15) is located in the inner plastic cylinder (133), the resin layer one (132) is located in the inner filter screen cylinder (131), and one end of the closure column (136) abuts against one end of the stop block (15) and one end of the inner plastic cylinder (133).