阅读说明：本技术 一种电渗析极水板水压测试工装及检测方法 (Electrodialysis pole water plate water pressure testing tool and detection method ) 是由 王大新 施小林 杨鹏 于 2021-07-21 设计创作，主要内容包括：本发明涉及一种电渗析极水板水压测试工装及检测方法,它属于电渗析领域。本发明包括固定侧承压框、承重横梁、前端横梁、前端横梁支撑脚、底梁、接水盘、滑板、吊环和液压压紧机构,固定侧承压框两侧与两根承重横梁的一端相连接,前端横梁两侧与两根承重横梁的另一端相连接,前端横梁的下方连接有两根前端横梁支撑脚,底梁与固定侧承压框的两侧自身支撑脚和两根前端横梁支撑脚相连接,底梁上有接水盘,承重横梁上有滑板,固定侧承压框、前端横梁和游动侧压紧框上均有吊环,液压压紧机构装在前端横梁上。本发明提高电渗析设备的出厂质量,避免因极水板渗漏,以及维修或更换后依然存在渗漏风险的问题,避免不必要的工作量,提高工作效率。(The invention relates to a water pressure testing tool and a water pressure testing method for an electrodialysis polar water plate, and belongs to the field of electrodialysis. The invention comprises a fixed side pressure bearing frame, bearing cross beams, front end cross beam supporting feet, a bottom beam, a water pan, a sliding plate, a lifting ring and a hydraulic pressing mechanism, wherein two sides of the fixed side pressure bearing frame are connected with one ends of the two bearing cross beams, two sides of the front end cross beam are connected with the other ends of the two bearing cross beams, two front end cross beam supporting feet are connected below the front end cross beam, the bottom beam is connected with the self supporting feet at two sides of the fixed side pressure bearing frame and the two front end cross beam supporting feet, the water pan is arranged on the bottom beam, the sliding plate is arranged on the bearing cross beam, the lifting rings are arranged on the fixed side pressure bearing frame, the front end cross beams and the movable side pressure bearing frame, and the hydraulic pressing mechanism is arranged on the front end cross beams. The invention improves the delivery quality of the electrodialysis equipment, avoids the problems of leakage of the polar water plate and leakage risk after maintenance or replacement, avoids unnecessary workload and improves the working efficiency.)

1. The utility model provides an electrodialysis utmost point water board water pressure test fixture, includes fixed side bearing frame (1), the side pressure frame (2) that moves about, two bearing beam (3), front end crossbeam (4), two front end crossbeam supporting legs (5) and floorbar (6), fixed side bearing frame (1) both sides are connected with the one end of two bearing beam (3), and front end crossbeam (4) both sides are connected with the other end of two bearing beam (3), and the below of this front end crossbeam (4) is connected with two front end crossbeam supporting legs (5), and floorbar (6) are connected with both sides self supporting legs and two front end crossbeam supporting legs (5) of fixed side bearing frame (1), its characterized in that: the movable water pan (7) is arranged above the bottom beam (6), the water pan (7) is provided with the water outlet (16), the sliding plate (8) is arranged above the bearing cross beam (3), the fixed side pressure bearing frame (1), the front end cross beam (4) and the movable side pressure bearing frame (2) are respectively provided with the lifting ring (9), the central position of the movable side pressure bearing frame (2) is provided with the central top seat (10) of the movable side pressure bearing frame, the movable side pressing frame (2) is provided with two movable frame hanging lugs (11), and the hydraulic pressing mechanism (12) is fixed on the front end beam (4); two electrode column round holes (13), a polar water plate upper flange welding position window (14) and a polar water plate lower flange welding position window (15) are respectively arranged on the fixed side pressure bearing frame (1) and the moving side pressure clamping frame (2); the polar water plate (17) is arranged on the sliding plate (8), and the upper flange port (19) of the polar water plate, the lower flange port (20) of the polar water plate and the two polar water plate electrode columns (24) are respectively penetrated out of the upper flange welding position window (14) of the polar water plate on the fixed side pressure bearing frame (1), the lower flange welding position window (15) of the polar water plate and the two electrode column round holes (13).

2. The electrodialysis utmost point water board water pressure test fixture of claim 1, characterized in that: the water inlet flange connecting piece is characterized by further comprising a distance block (18), two flange blind plates (21), a water inlet flange connecting piece (22) and a water outlet flange connecting piece (23), wherein the distance block (18) is installed on a moving side pressing frame center top seat (10), the water inlet flange connecting piece (22) is formed by connecting a pressure gauge, a ball valve and one flange blind plate (21) through a PVC pipe fitting, and the water outlet flange connecting piece (23) is formed by connecting a ball valve and one flange blind plate (21) through a PVC pipe fitting.

3. The electrodialysis utmost point water board water pressure test fixture of claim 1, characterized in that: the water receiving tray (7) is made of PVC materials.

4. The electrodialysis utmost point water board water pressure test fixture of claim 1, characterized in that: the bottom beam (6) is of a # -shaped structure.

5. An electrodialysis pole water plate water pressure test tool and a detection method adopt the electrodialysis pole water plate water pressure test tool of any one of claims 1-4, and the method comprises the following specific steps:

firstly, a moving side pressing frame (2) is hung on a sliding plate (8) by a traveling crane and is close to a hydraulic pressing mechanism (12); a polar water plate (17) is hung on a sliding plate (8) of the tool by a travelling crane and pushed towards a fixed side pressure bearing frame (1), so that an upper flange port (19) of the polar water plate, a lower flange port (20) of the polar water plate and two polar water plate electrode columns (24) of the polar water plate respectively penetrate through a window (14) at the welding position of the upper flange of the polar water plate, a window (15) at the welding position of the lower flange of the polar water plate and two electrode column round holes (13) on the fixed side pressure bearing frame (1), and the polar water plate (17) is attached to the fixed side pressure bearing frame (1);

a second polar water plate (17) is hung on a sliding plate (8) of the tool by a travelling crane and pushed towards the moving side pressing frame (2), so that an upper flange opening (19) of the polar water plate, a lower flange opening (20) of the polar water plate and two polar water plate electrode columns (24) of the second polar water plate respectively penetrate through a window (14) at the welding position of the upper flange of the polar water plate, a window (15) at the welding position of the lower flange of the polar water plate and two electrode column round holes (13) on the moving side pressing frame (2), and the second polar water plate (17) is attached to the moving side pressing frame (2);

then, the travelling side pressing frame (2) is slightly lifted by a travelling crane to slowly advance towards the fixed side pressure bearing frame (1), and when the two polar water plates (17) are attached, the travelling side pressing frame (2) is put down;

two flange blind plates (21) are respectively arranged on an upper flange opening (19) and a lower flange opening (20) of a polar water plate (17) on the side of a moving side pressing frame (2), and are locked by bolts;

respectively installing a water inlet flange connecting piece (22) and a water outlet flange connecting piece (23) on an upper flange opening (19) and a lower flange opening (20) of a polar water plate (17) on the fixed side pressure bearing frame (1) side, and locking by bolts;

then, the distance block (18) is arranged on the center top seat (10) of the moving side pressing frame and is connected by a bolt; then operating a hydraulic pressing mechanism (12) to press the workpiece to 25 MPa;

fully opening ball valves of a water inlet flange connecting piece (22) and a water outlet flange connecting piece (23), supplying water to the water inlet flange connecting piece (22) by using a water tank and a pressure pump, enabling water outlet of the water outlet flange connecting piece (23) to flow back to the water tank, closing the ball valve of the water outlet flange connecting piece (23), closing the ball valve on the water inlet flange connecting piece (22) when the value of a pressure gauge on the water inlet flange connecting piece (22) reaches 200kpa, starting a water pressure test, and maintaining the pressure for 30 minutes; during this time, the polar water plate (17) was observed for the occurrence of a leak.

Technical Field

The invention relates to a tool and a detection method, in particular to a tool and a detection method for testing water pressure of an electrodialysis polar water plate, and belongs to the technical field of electrodialysis.

Background

Electrodialysis technology is one of the membrane separation technologies that was developed earlier and achieved significant industrial success. Initial research dates back to two centuries. Most of the historical reports began with the first experiment in 1748 by a french scholars a. Noller that water naturally diffuses through the bladder membrane into an ethanol solution. This experiment found and confirmed the phenomenon of water permeation through animal membranes. Dialysis was discovered by Graham in 1854. The first membrane dialyser was manufactured in 1863 by Dubrunfout and successfully separated the sugars from the salts. In 1903 Morse and Pierce placed two electrodes in solution inside and outside the dialysis bag, respectively, and it was found that charged impurities could be removed from the gel more rapidly. Pauli in 1924 adopts the principle of chemical design, improves the Morse test device, tries to lighten polarization and increases mass transfer rate. Although they all employ non-permselective membranes, these pioneering efforts have led to a devastating role for the development of practical electrodialysis in the future. Meyer and Strauss in 1940 proposed the concept of a multi-compartment electrodialysis device of practical significance. In 1950, Juda and McRae develop cation and anion exchange membranes with high permselectivity, and this lays the practical foundation of electrodialysis technology.

The research of electrodialysis technology in China began in 1958. In the early 60 s, a small-sized electrodialysis device assembled with a domestic polyvinyl alcohol heterogeneous membrane was put into offshore testing. In 1965, a first brackish water desalting device was installed on a adult railway. The production of polystyrene heterogeneous ion exchange membranes in 1967 creates conditions for the popularization and application of electrodialysis technology. After the last 70 s, the development of the electrodialysis technology was fast, the study of main device components such as ion exchange membranes, separators and electrodes and body structures was innovated, and the device was developed to standardization and standardization, and relatively rich experience was also accumulated in the aspects of system engineering design and device operation management.

The electrodialysis electrode water plate is an important component of electrodialysis equipment and is used for providing an installation position for an electrode plate and forming a current path for the electrodialysis equipment as an electrode water chamber. The material is PVC material, which is a complete product formed by welding and connecting two PVC plates between an upper water inlet and outlet pipeline and a polar water plate mother plate. And a rubber O-shaped ring is used as a sealing material between the sealing ring and the electrode plate and is locked by a nut, so that the sealing effect is achieved.

At present, no patent and application of the technology exist; the general detection methods include two methods, one is to fill the device with water before the complete electrodialysis device leaves the factory, and observe whether the leakage exists at the welding position of the polar water plate and the sealing position of the rubber O-shaped ring of the electrode plate when the device internal leakage test is carried out under the extremely low water column pressure. And the other is that when the electrodialysis equipment is applied to a field, clear water is utilized to circulate a water pump, and after the water inlet pressure required by the operation of the equipment is adjusted, the leakage observation is carried out on the welding position of the polar water plate and the sealing position of the rubber O-shaped ring of the polar water plate.

In summary, there are two methods for detecting the polar water plate, but the same problem exists in that the detection can be performed only when the polar water plate is installed on the equipment, and when a leakage point is found at the welding position of the polar water plate, the equipment must be disassembled for maintenance or replacement.

The first method, although convenient to replace and maintain in a factory, has a low test water pressure and cannot meet the actual operation water pressure, and even if there is no leak point under low water pressure, there is still a risk in actual use.

In the second method, once the leakage phenomenon of the polar water plate is found, the polar water plate cannot be repaired or replaced on site, and only can be returned to a factory for maintenance or a new polar water plate is sent to the site. Firstly, the field work time is wasted, and secondly, the leakage risk still exists in the polar water plate after the maintenance or the replacement.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides the water pressure testing tool and the water pressure testing method for the electrodialysis polar water plate, which have simple and reasonable structural design, improve the delivery quality of electrodialysis equipment, avoid unnecessary disassembly of the equipment due to leakage of the polar water plate and improve the working efficiency.

The technical scheme adopted by the invention for solving the problems is as follows: this electrodialysis utmost point water board water pressure test fixture, including fixed side pressure bearing frame, the side pressure frame that moves about, two bearing beam, front end crossbeam, two front end crossbeam supporting legss and floorbar, fixed side pressure bearing frame both sides are connected with the one end of two bearing beam, and front end crossbeam both sides are connected with the other end of two bearing beam, and the below of this front end crossbeam is connected with two front end crossbeam supporting legss, and the floorbar is connected with two front end crossbeam supporting legss and two front end crossbeam supporting legss of fixed side pressure bearing frame, its characterized in that: the movable water receiving tray is arranged above the bottom beam, the water discharging port is formed in the water receiving tray, the sliding plate is arranged above the bearing cross beam, the fixed side bearing frame, the front end cross beam and the movable side bearing frame are respectively provided with the hanging ring, the center position of the movable side bearing frame is provided with the movable side pressing frame center top seat, the movable side pressing frame is provided with two movable frame hanging lugs, and the hydraulic pressing mechanism is fixed on the front end cross beam; the fixed side pressure bearing frame and the movable side pressure bearing frame are respectively provided with two electrode column round holes, a polar water plate upper flange welding position window and a polar water plate lower flange welding position window; the polar water plate is arranged on the sliding plate, and the upper flange port of the polar water plate, the lower flange port of the polar water plate and the two polar water plate electrode columns are respectively penetrated out of the window of the welding position of the upper flange of the polar water plate on the fixed side pressure-bearing frame, the window of the welding position of the lower flange of the polar water plate and the two circular holes of the electrode columns.

Preferably, the invention also comprises a distance block, two flange blind plates, a water inlet flange connecting piece and a water outlet flange connecting piece, wherein the distance block is arranged on a central top seat of the moving side pressing frame, the water inlet flange connecting piece is formed by connecting a pressure gauge, a ball valve and a flange blind plate through PVC pipe fittings, and the water outlet flange connecting piece is formed by connecting a ball valve and a flange blind plate through PVC pipe fittings.

Preferably, the water receiving tray also comprises a water outlet, wherein the water outlet is arranged on the water receiving tray, and the water receiving tray is made of PVC materials.

Preferably, a layer of rubber pad is adhered to the flat surfaces of the iron plates of the fixed side pressure bearing frame and the movable side pressure clamping frame; the PVC plate is used for preventing direct friction between a PVC plate and an iron plane and scratching the polar water plate.

Preferably, the bottom beam is of a cross-shaped structure; the function of stabilizing the whole frame is achieved.

The invention also provides a water pressure testing tool and a water pressure testing method for the electrodialysis polar water plate, which specifically comprise the following steps:

firstly, a moving side pressing frame is hung on a sliding plate by a traveling crane and is close to a hydraulic pressing mechanism; a polar water plate is hung on a sliding plate of the tool by a travelling crane and is pushed towards the fixed side pressure-bearing frame, so that an upper flange port of the polar water plate, a lower flange port of the polar water plate and two polar water plate electrode columns respectively penetrate out of a window at the welding position of the upper flange of the polar water plate, a window at the welding position of the lower flange of the polar water plate and two circular holes of the electrode columns on the fixed side pressure-bearing frame, and the polar water plate is attached to the fixed side pressure-bearing frame; the second polar water plate is hung on a sliding plate of the tool by a travelling crane and is pushed towards the moving side pressing frame, so that an upper flange opening of the polar water plate, a lower flange opening of the polar water plate and two polar water plate electrode posts of the second polar water plate respectively penetrate through a welding position window of the upper flange of the polar water plate, a welding position window of the lower flange of the polar water plate and two electrode post round holes on the moving side pressing frame, and the second polar water plate is attached to the moving side pressing frame; then, the travelling side pressing frame is slightly hoisted by using a traveling crane to slowly move forward to the fixed side pressing frame, and when the two polar water plates are attached, the travelling side pressing frame is put down; two flange blind plates are respectively arranged on an upper flange opening and a lower flange opening of the polar water plate on the side of the moving side pressing frame, and are locked by bolts; respectively installing and fixing a water inlet flange connecting piece and a water outlet flange connecting piece on an upper flange opening and a lower flange opening of a polar water plate on the side of the side bearing frame, and locking by bolts; then, the distance block is arranged on a central top seat of the moving side pressing frame and is connected by a bolt; then operating a hydraulic pressing mechanism to press the workpiece to 25 MPa; fully opening ball valves of a water inlet flange connecting piece and a water outlet flange connecting piece, supplying water to the water inlet flange connecting piece by using a water tank and a pressure pump, returning the water outlet of the water outlet flange connecting piece to the water tank, closing the ball valve of the water outlet flange connecting piece at the moment, closing the ball valve on the water inlet flange connecting piece when the numerical value of a pressure gauge on the water inlet flange connecting piece reaches 200kpa, starting a water pressure test, and maintaining the pressure for 30 minutes; during this time, the polar water plate was observed for the occurrence of leakage.

Compared with the prior art, the invention has the following advantages and effects: 1) unnecessary disassembly of equipment caused by leakage of the polar water plate is avoided; 2) the leakage risk still existing after the polar water plate is maintained or replaced is avoided; 3) unnecessary workload is avoided; 4) this application can detect two utmost point water boards simultaneously, has improved work efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a water pressure testing tool for an electrodialysis polar water plate.

Fig. 2 is a structural schematic diagram of a water pressure testing tool for an electrodialysis pole water plate.

Fig. 3 is a first installation schematic diagram of the water pressure testing component of the electrodialysis polar water plate.

Fig. 4 is a second schematic view of the installation of the water pressure testing component of the electrodialysis polar water plate.

In the figure: the device comprises a fixed side pressure bearing frame 1, a moving side pressure bearing frame 2, a bearing cross beam 3, a front end cross beam 4, a front end cross beam supporting foot 5, a bottom beam 6, a water receiving disc 7, a sliding plate 8, a hanging ring 9, a moving side pressure bearing frame center top seat 10, a moving frame hanging lug 11, a hydraulic pressure pressing mechanism 12, an electrode column round hole 13, an upper flange welding part window 14 of an electrode water plate, a lower flange welding part window 15 of the electrode water plate, a water outlet 16, an electrode water plate 17, a distance block 18, an upper flange opening 19 of the electrode water plate, a lower flange opening 20 of the electrode water plate, a flange blind plate 21, a water inlet flange connecting piece 22, a water outlet flange connecting piece 23 and an electrode column 24 of the electrode water plate.

Detailed Description

The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.

Examples are given.

Referring to fig. 1 to 4, the electrodialysis pole water plate water pressure test tool of the embodiment mainly includes a fixed side pressure bearing frame 1, a moving side pressure bearing frame 2, two bearing cross beams 3, a front end cross beam 4, two front end cross beam supporting feet 5, a bottom beam 6, a water receiving tray 7, a sliding plate 8, a hanging ring 9, a moving side pressure bearing frame center top seat 10, a moving frame hanging lug 11 and a hydraulic pressure pressing mechanism 12.

As shown in fig. 1-2, the fixed side pressure bearing frame 1 of the present embodiment has support legs on both sides, two lifting rings 9 are provided above the fixed side pressure bearing frame, and both sides of the lifting rings are connected to one end of two load bearing cross beams 3; two lifting rings 9 are arranged above the front end cross beam 4, two sides of the lifting rings are connected with the other ends of the two bearing cross beams 3, two front end cross beam supporting legs 5 are connected below the front end cross beam 4, and a hydraulic pressing mechanism 12 is arranged on the front end cross beam 4; the hydraulic clamping mechanism 12 is commercially available; a sliding plate 8 is arranged above the bearing cross beam 3; the bottom beam 6 is in a cross-shaped structure, is connected with self supporting legs at two sides of the fixed side pressure bearing frame 1 and two front end beam supporting legs 5, plays a role of stabilizing the whole frame, and a movable PVC water receiving tray 7 is placed above the bottom beam 6; a water outlet 16 is arranged on the water pan 7; a hanging ring 9 is arranged above the moving side pressing frame 2, two moving frame hanging lugs 11 are arranged, and a moving side pressing frame center top seat 10 is arranged at the center position of the moving side pressing frame.

In the embodiment, two electrode column circular holes 13, a polar water plate upper flange welding position window 14 and a polar water plate lower flange welding position window 15 are respectively arranged on the iron plates of the fixed side pressure bearing frame 1 and the moving side pressure bearing frame 2; and a layer of rubber pad is adhered to the flat surfaces of the iron plates of the fixed side pressure-bearing frame 1 and the moving side pressure-bearing frame 2, so as to prevent the PVC plate from directly rubbing the iron plane and scratching the polar water plate.

The auxiliary workpiece of the embodiment comprises a distance block 18, two flange blind plates 21, a water inlet flange connecting piece 22 and a water outlet flange connecting piece 23; the water inlet flange connecting piece 22 is formed by connecting a pressure gauge, a ball valve and a flange blind plate 21 through PVC pipe fittings; the water outlet flange connecting piece 23 is formed by connecting a ball valve and a flange blind plate 21 through a PVC pipe fitting.

As shown in fig. 3-4, the traveling side pressing frame 2 is first suspended on the sliding plate 8 by the traveling crane and is close to the hydraulic pressing mechanism 12; a polar water plate 17 is hung on a sliding plate 8 of the tool by a travelling crane and pushed towards a fixed side pressure bearing frame 1, so that an upper flange port 19 of the polar water plate, a lower flange port 20 of the polar water plate and two polar water plate electrode columns 24 of the polar water plate respectively penetrate through an upper flange welding position window 14 of the polar water plate, a lower flange welding position window 15 of the polar water plate and two electrode column round holes 13 on the fixed side pressure bearing frame 1, and the polar water plate 17 is attached to the fixed side pressure bearing frame 1. A second polar water plate 17 is hung on a sliding plate 8 of the tool by a travelling crane and pushed towards the moving side pressing frame 2, so that an upper flange port 19 of the polar water plate, a lower flange port 20 of the polar water plate and two polar water plate electrode columns 24 of the second polar water plate are respectively penetrated out of a welding position window 14 of the upper flange of the polar water plate, a welding position window 15 of the lower flange of the polar water plate and two electrode column round holes 13 on the moving side pressing frame 2, and the second polar water plate 17 is attached to the moving side pressing frame 2; then, the travelling side pressing frame 2 is slightly lifted by a travelling crane to slowly move forward to the fixed side pressing frame 1, and when the two polar water plates 17 are attached, the travelling side pressing frame 2 is put down; note that a rubber pad is padded between the two polar water plates 17 to ensure the sealing effect; two flange blind plates 21 are respectively arranged on an upper flange opening 19 and a lower flange opening 20 of the polar water plate 17 on the side of the moving side pressing frame 2, and are locked by bolts; respectively installing a water inlet flange connecting piece 22 and a water outlet flange connecting piece 23 on an upper flange port 19 and a lower flange port 20 of a polar water plate 17 on the side of the fixed side pressure bearing frame 1, and locking by bolts; then the distance block 18 is arranged on the center top seat 10 of the moving side pressing frame and is connected by a bolt; then, the hydraulic pressing mechanism 12 is operated to press the workpiece to 25 MPa; fully opening the ball valves of the water inlet flange connecting piece 22 and the water outlet flange connecting piece 23, supplying water to the water inlet flange connecting piece 22 by using a water tank and a pressure pump, returning the water outlet of the water outlet flange connecting piece 23 to the water tank, closing the ball valve of the water outlet flange connecting piece 23 at the moment, closing the ball valve on the water inlet flange connecting piece 22 when the numerical value of a pressure gauge on the water inlet flange connecting piece 22 reaches 200kpa, starting a water pressure test, and maintaining the pressure for 30 minutes; during this time, the water plate 17 was observed for leakage.

And will be apparent to those skilled in the art from the foregoing description.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.