Curtain type membrane frame gas detection tool and MBR (Membrane Bioreactor) curtain type membrane frame

Abstract

The utility model discloses a curtain type membrane frame gas detection tool and an MBR curtain type membrane frame. The gas detection tool comprises a plugging mechanism and a locking mechanism for locking the plugging mechanism, the plugging mechanism comprises a water production joint sealing cover for plugging the water production joint and a sealing cover connecting plate; the sealing cover connecting plate comprises a sealing cover mounting hole, and a first connecting plate and a second connecting plate which are respectively positioned on two sides of the sealing cover mounting hole; the water production joint sealing cover is arranged in the sealing cover mounting hole, and the upper and lower ends respectively extend outwards; a first hole is formed in the first connecting plate, a second hole is formed in the second connecting plate, and one of the first hole and the second hole can at least partially coincide with the other one after rotating by 180 degrees around the center line of the sealing cover mounting hole; the gas detection tool disclosed by the utility model can realize stable and effective plugging of the water production joints, can also improve the installation convenience of the tool, is beneficial for controlling the spacing distance between the water production joints to be smaller, and can be used for an MBR curtain type membrane frame.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment field, concretely relates to a curtain formula membrane frame gas detection frock and MBR curtain formula membrane frame. BACKGROUND

[0002] At present, the general MBR curtain formula membrane frame is connected with the MBR membrane assembly through the water production joint, the water production obtained by the MBR membrane assembly filtration is introduced into the membrane frame pipe through the water production joint, and is guided outwards through the water production pipe connected with the membrane frame pipe after gathering in the membrane frame pipe;Wherein, the water production joint is usually detachably connected and communicated on the membrane frame pipe, for example, the water production joint is fixedly connected and communicated on the membrane frame pipe through bolt, so that the butt joint tightness between the water production joint and the membrane frame pipe directly influences the quality stability of water production, if there is a leakage point, then the water production will be polluted (the sewage outside will enter the water production through the leakage point);Meanwhile, the pipeline and the flange mouth and other components connected with the water production pipe are welded on the membrane frame pipe, and the airtightness of these welded seams also influences the quality of water production, therefore, usually before use, the joint part between the water production joint and the membrane frame and the welded seam on the membrane frame pipe need to be checked for airtightness, and the airtightness checking mode is generally to block the positions including the water production joint, the flange mouth and the like through the plug, then high pressure gas is injected from the remaining opening, and then whether the airtightness of each detection position is qualified is observed, but in the practical process, there are many problems: 1, since the high pressure gas is injected in the pipeline, the pressure is large, and the plug only relies on the self sealing, and is easy to fall off from the membrane frame, causing harm to the personnel and the goods;2, if the gas detection pressure is low to avoid the plug falling off, then it is difficult to accurately and effectively detect the leakage point of the above-mentioned joint part and the welded seam position;3, the plug can be stably blocked on the water production joint by setting the fixed frock, but since the membrane frame usually sets many water production joints, then many plugs are needed, if a fixed frock is set for each plug, then not only the installation is complicated, but also the cost is high;Especially when the interval between the water production joints is close, the installation of each frock is inconvenient, and mutual interference is easy to occur. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming one or more defects of the prior art, and provides a novel curtain formula membrane frame gas detection frock, which can solve at least one problem in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0005] A curtain formula membrane frame gas detection frock, the gas detection frock includes a plugging mechanism and a locking mechanism for locking the plugging mechanism;Wherein, the plugging mechanism includes:

[0006] A water production joint sealing cover capable of being sleeved on a water production joint and used for plugging the water production joint;

[0007] The sealing cover connecting plate comprises a sealing cover mounting hole, a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are respectively located on two sides of the sealing cover mounting hole, the water production joint sealing cover is arranged in the sealing cover mounting hole and the upper and lower ends of the water production joint sealing cover respectively extend outward from the sealing cover mounting hole, a first hole is formed on the first connecting plate, a second hole is formed on the second connecting plate, and one of the first hole and the second hole is at least partially coincident with the other after rotating 180 degrees around the center line of the sealing cover mounting hole.

[0008] In some embodiments of the utility model, the center line of the first hole and the center line of the second hole are respectively parallel to the center line of the sealing cover mounting hole.

[0009] In some preferred embodiments of the utility model, the first hole penetrates the first connecting plate along the thickness direction of the first connecting plate and penetrates the first connecting plate along the length direction of the first connecting plate and in the direction away from the sealing cover mounting hole;

[0010] The second hole penetrates the second connecting plate along the thickness direction of the second connecting plate and penetrates the second connecting plate along the length direction of the second connecting plate and in the direction away from the sealing cover mounting hole.

[0011] According to some preferred aspects of the utility model, the length of the first hole is 0.5-0.95 times the length of the first connecting plate, and the length of the second hole is 0.5-0.95 times the length of the second connecting plate.

[0012] According to some preferred aspects of the utility model, the width of the first hole is 0.1-0.3 times the width of the first connecting plate, and the width of the second hole is 0.1-0.3 times the width of the second connecting plate.

[0013] According to some preferred aspects of the utility model, the width of the sealing cover mounting hole is 0.9-0.99 times the width of the first connecting plate or the second connecting plate.

[0014] According to some preferred aspects of the utility model, the length of the sealing cover mounting hole is 0.8-1.2 times the length of the first connecting plate or the second connecting plate.

[0015] In some embodiments of the utility model, the water production joint sealing cover and the sealing cover connecting plate are both metal materials.

[0016] In some embodiments of the utility model, the water production joint sealing cover and the sealing cover mounting hole are welded.

[0017] In some embodiments of the utility model, the locking mechanism comprises at least two locking assemblies, the locking assembly comprises a first locking plate, a second locking plate and a first fastener capable of fastening the first locking plate and the second locking plate to each other, one of the first locking plate and the second locking plate can be pressed on the sealing cover connecting plate.

[0018] According to some preferred and specific aspects of the utility model, the plugging mechanism has multiple, and the first connecting plate of one of the plugging mechanisms and the second connecting plate of the other can be overlapped with each other, and the first hole of the first connecting plate and the second hole of the second connecting plate in the overlapping state have partial overlap.

[0019] Further, the gas detection tool further comprises a plurality of second fasteners, and the second fasteners are used to fasten the two plugging mechanisms overlapped with each other to each other.

[0020] Further, the plurality of plugging mechanisms are arranged along the same direction.

[0021] Another technical scheme provided by the utility model is a MBR curtain type membrane rack, which comprises a curtain type membrane rack body, and is characterized in that the MBR curtain type membrane rack further comprises the curtain type membrane rack gas detection tool.

[0022] Compared with the prior art, the utility model has the following advantages due to the above technical scheme:

[0023] The utility model discloses based on the existing airtightness check when the plug cannot be effectively blocked, and there is the installation cumbersome of the fixed tooling of equipping every plug, high in cost, and when the interval between water production joint is close, the installation of each tooling is inconvenient, and the problems such as mutual interference are easy to occur, the utility model discloses innovatively provides a curtain formula membrane frame gas detection tooling of novel structure, and it is sealed with the water production joint sealing cap through the sealing cap connecting plate of unique design, on one hand, can provide enough position for locking mechanism locking, and then realize the stability of the overall structure when airtightness check, realize effective blocking, on the other hand, the existence of first connecting plate and second connecting plate makes when multiple blocking mechanisms coexist can realize mutual lap joint, so this can reduce the space occupied by the whole, is favorable for the interval setting of water production joint to be closer, that is, can set more water production joints on the effective length, and then be favorable for setting more MBR membrane assembly (each water production joint can correspond to install an MBR membrane assembly, when more water production joints can be set, then theoretically more MBR membrane assemblies can be set), improve water treatment efficiency, and simultaneously can realize mutual restriction and limiting between blocking assemblies through mutual lap joint, and can rely on the existence of first hole and second hole and realize mutual locking, and then make the single blocking mechanism that itself exists independently can form a whole with other blocking mechanisms when working, greatly improve the stability of blocking, can rely on the restriction and limiting effect of other blocking mechanisms and seal the water production joint sealing cap firmly on the corresponding water production joint, so that the airtightness detection of higher gas pressure can be realized, improve detection accuracy and effectiveness, and it is easier to find small leaks. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will be to the drawing needed to use in the embodiment or prior art description simple introduction, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0025] Figure 1 It is the structure schematic diagram of blocking mechanism in the embodiment of the utility model;

[0026] Figure 2 It is the side view schematic diagram of blocking mechanism in the embodiment of the utility model;

[0027] Figure 3 It is the overhead view schematic diagram of sealing cap connecting plate in the embodiment of the utility model;

[0028] Figure 4 It is the overhead view schematic diagram of mutual lap of multiple sealing cap connecting plates in the embodiment of the utility model;

[0029] Figure 5 It is the overhead view schematic diagram two of mutual lap of multiple sealing cover connecting plates in the embodiment of the utility model;

[0030] Figure 6 It is the structure schematic diagram of MBR curtain type membrane rack containing curtain type membrane rack gas detection tool in the embodiment of the utility model;

[0031] Figure 7 It is Figure 6 The enlarged schematic view in A of the middle part;

[0032] Figure 8 It is Figure 6 The enlarged schematic view in B of the middle part;

[0033] Figure 9 It is the overhead view schematic diagram of MBR curtain type membrane rack containing curtain type membrane rack gas detection tool in the embodiment of the utility model;

[0034] In the drawing marks: 1, the plugging mechanism;11, the water production joint sealing cover;12, the sealing cover connecting plate;121, the sealing cover mounting hole;122, the first connecting plate;1221, the first hole;123, the second connecting plate;1231, the second hole;21, the locking assembly;211, the first locking plate;212, the second locking plate;213, the first fastener;3, the second fastener;4, the water production joint;5, the membrane rack pipe;6, the sealing ring;7, the flange;8, the weld. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model is described in detail below by combining with the drawings and specific embodiments. In the following description, a lot of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from the description herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the following disclosed specific embodiments.

[0036] In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0037] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0038] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0039] Referring to Figures 1 to 9 The present application provides a curtain type membrane frame gas detection tool and an MBR curtain type membrane frame comprising the same.

[0040] The gas detection tool comprises a plugging mechanism 1 and a locking mechanism for locking the plugging mechanism 1. The plugging mechanism 1 is used to plug the water production joint 4, and the locking mechanism is used to stably fix the plugging mechanism 1, so that the plugging mechanism 1 effectively and stably plugs the water production joint 4.

[0041] The plugging mechanism 1 comprises a water production joint sealing cover 11 capable of being sleeved on the water production joint 4 and used for plugging the water production joint 4, and a sealing cover connecting plate 12 connected with the water production joint sealing cover 11. The sealing cover connecting plate 12 and the water production joint sealing cover 11 can be integrally formed or fixed together by other methods such as welding.

[0042] The sealing cover connecting plate 12 comprises a sealing cover mounting hole 121, a first connecting plate 122 and a second connecting plate 123, and the first connecting plate 122 and the second connecting plate 123 are respectively located on both sides of the sealing cover mounting hole 121. The water production joint sealing cover 11 is arranged in the sealing cover mounting hole 121 and the upper and lower ends thereof respectively extend out of the sealing cover mounting hole 121. A first hole 1221 is formed on the first connecting plate 122, and a second hole 1231 is formed on the second connecting plate 123. One of the first hole 1221 and the second hole 1231 can be rotated by 180° around the center line of the sealing cover mounting hole 121 and at least partially coincide with the other.

[0043] In the present application, the water production joint sealing cover 11 can be welded in the sealing cover mounting hole 121 by welding. Therefore, the water production joint sealing cover 11 and the sealing cover connecting plate 12 can be made of weldable metal materials, including but not limited to stainless steel and other materials. Further, the water production joint sealing cover 11 can be a cylindrical sealing cap sleeved on the outer circumferential side of the water production joint 4. The length of the water production joint sealing cover 11 extending downward out of the sealing cover mounting hole 121 is determined according to the length of the water production joint 4 to be sleeved, so as to stably sleeve and seal the water production joint 4.

[0044] The first hole 1221 and the second hole 1231 are arranged on both sides of the sealing cover mounting hole 121, the center line of the first hole 1221 and the center line of the second hole 1231 are respectively parallel to the center line of the sealing cover mounting hole 121, and the first hole 1221, the sealing cover mounting hole 121 and the second hole 1231 are not through. Further, the first hole 1221 penetrates the first connecting plate 122 along the thickness direction of the first connecting plate 122 and penetrates the first connecting plate 122 along the length direction of the first connecting plate 122 and away from the sealing cover mounting hole 121; the second hole 1231 penetrates the second connecting plate 123 along the thickness direction of the second connecting plate 123 and penetrates the second connecting plate 123 along the length direction of the second connecting plate 123 and away from the sealing cover mounting hole 121. Referring to Figure 3 As shown, the first hole 1221 and the second hole 1231 both extend from the edge position of the corresponding connecting plate to the direction close to the sealing cover mounting hole 121, and the cross section of the side close to the sealing cover mounting hole 121 is a semicircular arc shape, and the cross section of the remaining part is approximately rectangular. In fact, in this example, the first hole 1221 and the second hole 1231 are arranged symmetrically with respect to the sealing cover mounting hole 121. Such arrangement facilitates stable lapping when two sealing cover connecting plates 12 are lapped, and facilitates locking of the lapped two sealing cover connecting plates 12 through the overlapping part of the first hole 1221 and the second hole 1231.

[0045] Referring to Figure 4 and Figure 5 As shown, the first hole 1221 and the second hole 1231 both extend from the edge position of the corresponding connecting plate to the direction close to the sealing cover mounting hole 121, and the cross section of the side close to the sealing cover mounting hole 121 is a semicircular arc shape, and the cross section of the remaining part is approximately rectangular. In fact, in this example, the first hole 1221 and the second hole 1231 are arranged symmetrically with respect to the sealing cover mounting hole 121. Such arrangement facilitates stable lapping when two sealing cover connecting plates 12 are lapped, and facilitates locking of the lapped two sealing cover connecting plates 12 through the overlapping part of the first hole 1221 and the second hole 1231. Figure 4 As shown, the first hole 1221 and the second hole 1231 both extend from the edge position of the corresponding connecting plate to the direction close to the sealing cover mounting hole 121, and the cross section of the side close to the sealing cover mounting hole 121 is a semicircular arc shape, and the cross section of the remaining part is approximately rectangular. In fact, in this example, the first hole 1221 and the second hole 1231 are arranged symmetrically with respect to the sealing cover mounting hole 121. Such arrangement facilitates stable lapping when two sealing cover connecting plates 12 are lapped, and facilitates locking of the lapped two sealing cover connecting plates 12 through the overlapping part of the first hole 1221 and the second hole 1231. Figure 5 As shown, the first hole 1221 and the second hole 1231 both extend from the edge position of the corresponding connecting plate to the direction close to the sealing cover mounting hole 121, and the cross section of the side close to the sealing cover mounting hole 121 is a semicircular arc shape, and the cross section of the remaining part is approximately rectangular. In fact, in this example, the first hole 1221 and the second hole 1231 are arranged symmetrically with respect to the sealing cover mounting hole 121. Such arrangement facilitates stable lapping when two sealing cover connecting plates 12 are lapped, and facilitates locking of the lapped two sealing cover connecting plates 12 through the overlapping part of the first hole 1221 and the second hole 1231. Figure 5 As shown, the first hole 1221 and the second hole 1231 both extend from the edge position of the corresponding connecting plate to the direction close to the sealing cover mounting hole 121, and the cross section of the side close to the sealing cover mounting hole 121 is a semicircular arc shape, and the cross section of the remaining part is approximately rectangular. In fact, in this example, the first hole 1221 and the second hole 1231 are arranged symmetrically with respect to the sealing cover mounting hole 121. Such arrangement facilitates stable lapping when two sealing cover connecting plates 12 are lapped, and facilitates locking of the lapped two sealing cover connecting plates 12 through the overlapping part of the first hole 1221 and the second hole 1231.

[0046] The length of the first hole 1221 is 0.5-0.95 times the length of the first connecting plate 122, for example, it can be 0.5 times, 0.55 times, 0.6 times, 0.65 times, 0.7 times, 0.75 times, 0.8 times, 0.85 times, 0.9 times, 0.95 times, etc.; the length of the second hole 1231 is 0.5-0.95 times the length of the second connecting plate 123, for example, it can be 0.5 times, 0.55 times, 0.6 times, 0.65 times, 0.7 times, 0.75 times, 0.8 times, 0.85 times, 0.9 times, 0.95 times, etc. The width of the first hole 1221 is 0.1-0.3 times the width of the first connecting plate 122, for example, it can be 0.1 times, 0.12 times, 0.15 times, 0.18 times, 0.2 times, 0.22 times, 0.25 times, 0.28 times, 0.3 times, etc.; the width of the second hole 1231 is 0.1-0.3 times the width of the second connecting plate 123, for example, it can be 0.1 times, 0.12 times, 0.15 times, 0.18 times, 0.2 times, 0.22 times, 0.25 times, 0.28 times, 0.3 times, etc. In this example, the length and width of the first connecting plate 122 and the second connecting plate 123 are the same, and the two are symmetrically arranged along the center line of the sealing cover mounting hole 121, and the length and width of the first hole 1221 and the second hole 1231 are also the same, and the two are also symmetrically arranged along the center line of the sealing cover mounting hole 121.

[0047] The width of the sealing cover mounting hole 121 is 0.9-0.99 times the width of the first connecting plate 122 or the second connecting plate 123, for example, it can be 0.9 times, 0.91 times, 0.92 times, 0.93 times, 0.94 times, 0.95 times, 0.96 times, 0.97 times, 0.98 times, 0.99 times. The length of the sealing cover mounting hole 121 is 0.8-1.2 times the length of the first connecting plate 122 or the second connecting plate 123, for example, it can be 0.8 times, 0.82 times, 0.85 times, 0.88 times, 0.9 times, 0.92 times, 0.95 times, 0.98 times, 1.0 times, 1.02 times, 1.05 times, 1.1 times, 1.15 times, 1.18 times, etc.

[0048] The locking mechanism includes at least two locking assemblies 21, and the locking assembly 21 includes a first locking plate 211, a second locking plate 212, and a first fastener 213 capable of tightly fastening the first locking plate 211 and the second locking plate 212 to each other, and one of the first locking plate 211 and the second locking plate 212 is capable of being pressed on the sealing cover connecting plate 12. See Figure 7As shown, the first locking plate 211 is arranged on the sealing cover connecting plate 12, and the second locking plate 212 is arranged opposite to the first locking plate 211 and is arranged on the membrane rack pipe 5. When the first fastener 213 fastens the first locking plate 211 and the second locking plate 212, the sealing mechanism can be fastened on the membrane rack pipe, so that the sealing mechanism can stably seal the water production joint. Figure 8 As shown, the schematic diagram of the water production joint 4 is exemplarily shown. The sealing ring 6 is further arranged on the outer circumferential side of the water production joint. When the sealing cover of the water production joint is arranged on the water production joint, the sealing ring can play a buffering role on one hand, and on the other hand, when being pressed, the sealing ring can seal the gap between the sealing cover of the water production joint and the water production joint, so as to ensure the sealing performance of the sealing.

[0049] Generally, the MBR curtain type membrane usually has a plurality of water production joints 4 arranged side by side. Therefore, the sealing mechanism 1 also needs to have a plurality of corresponding sealing mechanisms. In this case, each sealing mechanism needs to seal one water production joint. In this example, through the structure of the specific sealing mechanism 1, the first connecting plate 122 of one sealing mechanism and the second connecting plate 123 of another sealing mechanism can be overlapped with each other, and the first hole 1221 of the first connecting plate 122 and the second hole 1231 of the second connecting plate 123 in the overlapped state have a partial overlap. The plurality of sealing mechanisms 1 can be arranged in the same direction. In this way, not only the length ratio of the sealing mechanism can be reduced, but also the two sealing mechanisms can limit each other, so as to realize the whole linkage feature, improve the effectiveness and stability of the sealing, and avoid that the single sealing mechanism can only bear a small pressure when working independently.

[0050] Further, the gas detection tooling also includes a plurality of second fasteners 3. The second fasteners 3 are used to fasten the two sealing mechanisms 1 overlapped with each other.

[0051] The first fastener 213 and the second fastener 3 can be a combination of a bolt and a nut. The two components are connected in series through the bolt, and then they are fastened through the nut. Of course, other fastening structures that can achieve the same function can also be used.

[0052] Generally, the flange 7 and the membrane rack pipe 5 are connected through a pipeline. The pipeline and the membrane rack pipe are connected through welding. If the welding seam 8 formed after welding is not sealed well, the produced water is easily contaminated. Therefore, in addition to detecting the tightness of the joint between the water production joint and the membrane rack pipe, the detection of the welding seam can also be realized in the gas tightness detection. For example, the gas detection pressure can be increased to detect the small pipeline welding leakage point.

[0053] In this example, the MBR curtain type membrane frame is generally cuboid structure, and water production joints 4 are arranged on the upper side and the lower side, and multiple water production joints 4 are arranged side by side on each side.

[0054] During actual gas detection, the gas leakage of the welding position of the water production pipeline and the butt joint position of each component can be observed from the gas inlet flange, so that the site personnel can repair the leakage point to prevent the turbidity of the produced water from being increased after the membrane frame is immersed in water.

[0055] In summary, the plug cannot be effectively plugged during the existing air tightness check, and the installation is complicated, the cost is high, and when the interval between the water production joints is close, the installation of each tool is inconvenient, and mutual interference and other problems are prone to occur; the utility model innovatively provides a curtain type membrane frame air detection tool with a novel structure, which is matched with the water production joint sealing cover through the sealing cover connecting plate designed in a unique manner, on the one hand, sufficient position is provided for the locking mechanism to lock, thereby realizing the stability of the overall structure during the air tightness check and realizing effective plugging; on the other hand, the existence of the first connecting plate and the second connecting plate enables the multiple plugging mechanisms to be connected with each other when they coexist, so that the occupied space can be reduced, the interval between the water production joints can be set closer, that is, more water production joints can be set on the effective length, thereby facilitating the setting of more MBR membrane assemblies (each water production joint can correspondingly install an MBR membrane assembly, when more water production joints can be set, more MBR membrane assemblies can be set in theory), improving the water treatment efficiency, and the plugging assemblies can be limited and positioned relative to each other through mutual lapping, and can be locked relative to each other through the existence of the first hole and the second hole, thereby enabling the single plugging mechanism to form a whole with other plugging mechanisms when working, greatly improving the stability of plugging, and the water production joint sealing cover can be firmly limited and sealed on the corresponding water production joint through the limiting and positioning effect of other plugging mechanisms, so that air tightness detection with higher gas pressure can be realized, the detection accuracy and effectiveness are improved, and small leakage points are easier to find.

[0056] The above examples are only for illustrating the technical concept and characteristics of the utility model, the purpose is to enable people skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model, and equivalent changes or modifications made according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. A curtain membrane frame gas detection tool, characterized in that, The gas detection tool comprises a plugging mechanism and a locking mechanism for locking the plugging mechanism; wherein the plugging mechanism comprises: a water production joint sealing cover capable of being sleeved on the water production joint and used for plugging the water production joint; a sealing cover connecting plate comprising a sealing cover mounting hole, a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate being respectively located on two sides of the sealing cover mounting hole; the water production joint sealing cover is arranged in the sealing cover mounting hole and the upper and lower ends thereof respectively extend outwardly beyond the sealing cover mounting hole; a first hole is formed on the first connecting plate and a second hole is formed on the second connecting plate, one of the first hole and the second hole can at least partially coincide with the other after rotating 180° around the center line of the sealing cover mounting hole.

2. The curtain film rack gas detection tool of claim 1, wherein, The center line of the first hole and the center line of the second hole are respectively parallel to the center line of the sealing cover mounting hole.

3. The curtain film rack gas detection tool of claim 1, wherein, The first hole penetrates the first connecting plate along the thickness direction of the first connecting plate and penetrates the first connecting plate along the length direction of the first connecting plate and in the direction away from the sealing cover mounting hole; The second hole penetrates the second connecting plate along the thickness direction of the second connecting plate and penetrates the second connecting plate along the length direction of the second connecting plate and in the direction away from the sealing cover mounting hole.

4. The curtain film rack gas detection tool of claim 1, wherein, The length of the first hole is 0.5-0.95 times the length of the first connecting plate and the length of the second hole is 0.5-0.95 times the length of the second connecting plate; and / or, the width of the first hole is 0.1-0.3 times the width of the first connecting plate and the width of the second hole is 0.1-0.3 times the width of the second connecting plate.

5. The curtain film rack gas detection tool of claim 1, wherein, The width of the sealing cover mounting hole is 0.9-0.99 times the width of the first connecting plate or the second connecting plate; and / or, the length of the sealing cover mounting hole is 0.8-1.2 times the length of the first connecting plate or the second connecting plate.

6. The curtain film rack gas detection tool of claim 1, wherein, The water production joint sealing cover and the sealing cover connecting plate are both made of metal; and / or, the water production joint sealing cover and the sealing cover mounting hole are connected by welding.

7. The curtain film rack gas detection tool of claim 1, wherein, The locking mechanism comprises at least two locking assemblies, each of the locking assemblies comprising a first locking plate, a second locking plate and a first fastener capable of fastening the first locking plate and the second locking plate to each other, one of the first locking plate and the second locking plate being capable of being pressed on the sealing cover connecting plate.

8. The curtain film rack gas detection tool of claim 1, wherein, The plugging mechanisms are multiple in number, the first connecting plate of one of the plugging mechanisms and the second connecting plate of another of the plugging mechanisms can be overlapped with each other, and the first hole of the first connecting plate and the second hole of the second connecting plate in the overlapped state have partial coincidence.

9. The curtain membrane rack gas detection tool of claim 8, wherein, The gas detection tool further comprises multiple second fasteners for fastening two of the plugging mechanisms overlapped with each other; and / or, the multiple plugging mechanisms are arranged in the same direction.

10. An MBR curtain membrane rack comprising a curtain membrane rack body, characterized in that, The MBR curtain type membrane rack further comprises the curtain type membrane rack gas detection tool according to any one of claims 1-9.

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