Water supplementing device for pipeline closed water test and evaluation method

Abstract

The invention provides a water replenishing device for a pipeline closed water test and an evaluation method, belongs to the field of building construction, and aims to solve the problem that the water seepage amount of a pipeline cannot be accurately obtained in the prior art. The device comprises a measuring cup, a timing switch, a first water outlet pipe, a second water outlet pipe and a floating ball valve, and the measuring cup, the timing switch and the floating ball valve are ingeniously arranged, so that the efficient and accurate device for measuring the water seepage amount of the pipeline is constructed; specifically, the diameter of the measuring cup is designed to be far smaller than the diameter of the pipeline, the measuring cup becomes a miniature water level observation window due to the size difference, when water seepage occurs in the pipeline, the water level in the measuring cup drops along with the water seepage, and due to the fact that the diameter of the measuring cup is small, even tiny water level changes can be visually and clearly observed by an operator. The problem that in a traditional measuring method, due to the fact that the amount of water seepage in the pipeline is small, the water level drop amplitude is not obvious, an operator cannot accurately read the water level variation, and then the measuring precision is limited is effectively solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of building construction, in particular to a pipe closed water test water supplementing device and evaluation method. BACKGROUND

[0002] Pipe closed water test is a key link in the field of municipal engineering, drainage system construction and other fields to verify the pipe tightness. The core of the pipe closed water test is to accurately simulate the actual operating environment of the pipe, and to focus on detecting the leakage of the pipe under a certain water head pressure, so as to ensure that the quality of the pipe engineering fully meets the design specification requirements. According to the explicit provisions of “Water Supply and Drainage Pipeline Engineering Construction and Acceptance Specification” (GB50268-2008), the sewage pipe, combined rainwater and sewage pipe and gravity flow drainage pipe must strictly implement the closed water test after completing the laying operation and before backfilling. Moreover, the test results must strictly meet the hard standard that “there is no leakage phenomenon in the pipe and the interface, and the measured water seepage is less than the allowable value”, which is the basic prerequisite for ensuring the long-term stable operation of the pipe and avoiding water resource waste and environmental pollution.

[0003] At present, the common closed water test operation mode in the industry is as follows: after completing the water injection process inside the pipe, professional personnel measure the initial water level manually with the help of a caliper and other measuring tools. Then, after a predetermined time interval, the water level is measured again. Finally, according to the measured water level change data, combined with the cross-sectional area parameters of the pipe, the water seepage is calculated through the formula. However, this traditional method has many disadvantages. On the one hand, the manual measurement process is tedious and time-consuming, which greatly reduces the test efficiency, especially in large-scale pipe engineering, this defect is more prominent, which seriously affects the engineering progress. On the other hand, manual measurement inevitably introduces human error, such as reading deviation, inaccurate measurement position, etc. These factors will lead to inaccurate measured water seepage results, and thus cannot truly reflect the tightness of the pipe, which may cause potential risks to the engineering quality.

[0004] To solve the above problems, a pipe closed water test water level monitoring device is disclosed in the patent with publication number CN220339471U. The device mainly consists of a sleeve with an observation port, a vertical rod with a scale and a floating ball. The vertical rod is slidably arranged in the sleeve at one end, and the floating ball is connected to the other end. In actual application, the floating ball is placed on the water surface in the pipe. With the rise and fall of the water level, the floating ball drives the vertical rod to slide correspondingly in the sleeve. The operator can observe the change of the scale line on the vertical rod through the observation port, and thus can intuitively obtain the water level drop. Although this device simplifies the water level measurement process to some extent, the water seepage of the pipe is usually small, and the water level drop is extremely small, so the change of the scale line is also extremely small. Even if the scale line is set, it is still difficult for the operator to accurately read this subtle change in actual operation, which limits the measurement accuracy and cannot meet the demand of high-precision closed water test. SUMMARY

[0005] In view of the above-mentioned disadvantages of the prior art, the purpose of the present application is to provide a pipeline closed water test water supplementing device and evaluation method for solving the problem that the water leakage of the pipeline cannot be accurately obtained in the prior art.

[0006] To achieve the above-mentioned purpose and other related purposes, the present application provides a pipeline closed water test water supplementing device, comprising: a measuring cup, a timing switch, a first water outlet pipe, a second water outlet pipe and a float ball valve; the measuring cup is used for containing water, and a scale is arranged on the outer side of the measuring cup; the timing switch is connected with the measuring cup through the first water outlet pipe and connected with the float ball valve through the second water outlet pipe; the timing switch is used for disconnecting the connection between the first water outlet pipe and the second water outlet pipe after exceeding a preset time; and the float ball valve is used for opening the second water outlet pipe when the water surface is lowered, so as to supplement the water in the measuring cup into the pipeline.

[0007] Optionally, the timing switch comprises: a perforated ball valve, a shell, a rotating rod, a spring, a gear and an escapement; the perforated ball valve is arranged in the first water outlet pipe, the shell is located outside the first water outlet pipe, and a mounting cavity is arranged in the shell; the rotating rod is partially located in the mounting cavity and rotatably connected with the shell, both ends of the rotating rod are located outside the mounting cavity, and one end of the rotating rod is connected with the perforated ball valve; the spring, the gear and the escapement are located in the mounting cavity; the spring is connected with the inner side wall of the mounting cavity and the rotating rod; the gear is arranged on the rotating rod, and the gear and the escapement are in transmission connection.

[0008] Optionally, a base is further included, and at least one measuring cup fixing groove is arranged on the base.

[0009] Optionally, the measuring cup fixing groove is two.

[0010] Optionally, at least three supporting assemblies are further included, one end of the supporting assembly is detachably connected with the base, and the other end is used for contacting the ground surface to support the base on the bottom surface.

[0011] Optionally, the supporting assembly comprises a first connecting rod, and the first connecting rod is threadedly connected with the base.

[0012] Optionally, the supporting assembly further comprises a second connecting rod and an adjusting piece, one end of the adjusting piece is threadedly connected with the second connecting rod, the other end of the adjusting piece is threadedly connected with the second connecting rod, and the threads at both ends of the adjusting piece are in the same direction; the first connecting rod is a non-straight rod, and the end of the second connecting rod away from the adjusting piece is used for contacting the ground surface.

[0013] Optionally, the second water outlet pipe comprises a second water outlet pipe A and a second water outlet pipe B, one end of the second water outlet pipe B is connected with the second water outlet pipe A, the other end of the second water outlet pipe B is connected with the float ball valve, and the connecting end of the second water outlet pipe B with the second water outlet pipe A is at least partially a hose.

[0014] Optionally, the second water outlet pipe B is connected to the floating ball valve through a hard pipe.

[0015] In another aspect, the application also provides a pipeline closed water test evaluation method, which comprises a pipeline closed water test water supplement device as described above, and further comprises: a mounting step of placing the measuring cup on the top of the pipeline, placing the floating ball valve on the water surface in the pipeline, and opening the timing switch; and a reading step of reading the scale line of the water in the measuring cup after waiting for a preset time.

[0016] As described above, the pipeline closed water test water supplement device and the evaluation method of the application have at least the following beneficial effects:

[0017] 1. By ingeniously arranging the measuring cup, the timing switch, and the floating ball valve, an efficient and accurate pipeline water leakage measurement device is constructed. Specifically, the diameter of the measuring cup is designed to be much smaller than the diameter of the pipeline. Such a size difference makes the measuring cup become a micro "water level observation window". When water leakage occurs in the pipeline, the water level in the measuring cup will decrease accordingly. Since the diameter of the measuring cup is small, even a slight change in the water level can be observed by the operator intuitively and clearly. This design effectively solves the problem that in the traditional measurement method, the water level drop is not obvious due to the small amount of water leakage in the pipeline, and the operator has difficulty in accurately reading the water level change, thereby limiting the measurement accuracy.

[0018] 2. By introducing the timing switch, the timing switch can accurately control the connection state between the first water outlet pipe and the second water outlet pipe according to the preset time parameter. During the measurement process, when the preset time node is reached, the timing switch will automatically disconnect the connection between the first water outlet pipe and the second water outlet pipe, thereby stopping the water injection into the pipeline. This operation ensures that during the stage when the water level drops due to water leakage, the water level in the measuring cup will not fluctuate due to continuous water injection, so that the water level in the measuring cup can stably reflect the actual water leakage in the pipeline. Even if the operator delays the reading time due to handling other urgent matters, the water level in the measuring cup will remain constant and will not change due to external factors, thereby effectively ensuring the accuracy and reliability of the measurement results. Optionally, a sealing cover can be provided on the measuring cup to avoid affecting the accuracy and reliability of the measurement structure due to evaporation of water in the measuring cup. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 shows the overall structure of the pipeline closed water test water supplement device of the application.

[0020] Figure 2 shows an angle sectional view of the timing switch of the pipeline closed water test water supplement device of the application.

[0021] Figure 3Another angle sectional view of a timing switch of a pipeline closed water test water supplement device.

[0022] Figure 4 A structure diagram of a base of a pipeline closed water test water supplement device.

[0023] Element number explanation:

[0024] 1, measuring cup, 2, timing switch, 21, perforated ball valve, 22, shell, 23, rotating rod, 24, spring, 25, gear, 26, escapement, 3, first water outlet pipe, 4, second water outlet pipe, 41, second water outlet pipe A, 42, second water outlet pipe B, 5, floating ball valve, 6, base, 61, measuring cup fixing groove, 7, support assembly, 71, first connecting rod, 72, second connecting rod, 73, adjusting piece. DETAILED DESCRIPTION

[0025] The following embodiments of the present application are described by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification.

[0026] Please refer to the following drawings. It should be understood that the structure, proportion, size, etc. shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to define the limiting conditions of the implementation of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the implementation scope of the present application.

[0027] The following embodiments are only for illustration. Various embodiments can be combined, which are not limited to the content shown in the following single embodiment.

[0028] Please refer to Figure 1The application provides a pipeline closed water test water supplementing device, which comprises a measuring cup 1, a timing switch 2, a first water outlet pipe 3, a second water outlet pipe 4 and a float ball valve 5. The measuring cup 1 is used for containing water and is provided with a scale line on the outer side. The timing switch 2 is connected with the measuring cup 1 through the first water outlet pipe 3 and is connected with the float ball valve 5 through the second water outlet pipe 4. The outer side wall of the measuring cup 1 is provided with an opening for connecting the first water outlet pipe 3. The first water outlet pipe 3 can be provided with a rubber joint or a sealing ring and the like structure to realize the sealing connection of the opening and avoid water leakage in the measuring cup 1. The timing switch 2 can be timed for 30 minutes or more, which is not limited in the embodiment. The timing switch 2 is used for disconnecting the first water outlet pipe 3 and the second water outlet pipe 4 after exceeding the preset time (i.e. the timing time). The float ball valve 5 is used for opening the second water outlet pipe 4 to supplement the water in the measuring cup 1 into the pipeline when the water surface is lowered. The float ball valve 5 is a valve for automatically controlling the liquid level by using the principle of buoyancy. The core structure comprises a float ball, a connecting rod and a valve body. The valve is opened or closed by the lifting of the float ball to realize the automatic adjustment of the liquid level.

[0029] In use, the measuring cup 1 can be filled with water, and then the measuring cup 1 is placed on the top of the pipeline, for example, the top of the inspection well connected with the pipeline. Then the float ball valve 5 is placed on the water surface in the pipeline, and the timing switch 2 is opened. If the water level in the pipeline is lowered due to water seepage, the float ball valve 5 opens the second water outlet pipe 4 to flow the water in the measuring cup 1 into the pipeline, so as to supplement the water in the pipeline. When the preset time is reached, the timing switch 2 disconnects the first water outlet pipe 3 and the second water outlet pipe 4. At this time, even if the water level in the pipeline is lowered, the float ball valve 5 opens the second water outlet pipe 4, and water cannot be injected into the pipeline. When the preset time is reached, the operator can obtain the water seepage amount of the pipeline by reading the amount of water in the measuring cup 1.

[0030] In the embodiment, the measuring cup 1, the timing switch 2 and the float ball valve 5 are ingeniously arranged to construct a set of efficient and accurate pipeline water seepage measuring device. Specifically, the diameter of the measuring cup 1 is designed to be much smaller than the diameter of the pipeline. The size difference makes the measuring cup 1 become a micro “water level observation window”. When water seepage occurs in the pipeline, the water level in the measuring cup 1 will be lowered, and since the diameter of the measuring cup 1 is small, even a small change in the water level can be directly and clearly observed by the operator. This design effectively solves the problem that the water level change is not obvious in the traditional measurement method due to the small amount of water seepage in the pipeline, and the operator cannot accurately read the water level change, thereby limiting the measurement accuracy.

[0031] Further, the embodiment also introduces a key component, the timing switch 2. The timing switch 2 can accurately control the connection state between the first water outlet pipe 3 and the second water outlet pipe 4 according to the preset time parameter. During the measurement process, when the preset time node is reached, the timing switch 2 will automatically disconnect the connection between the first water outlet pipe 3 and the second water outlet pipe 4, thereby stopping the water injection into the pipeline. This operation ensures that during the stage when the water level drops due to seepage, the water level in the measuring cup 1 will not fluctuate due to continuous water injection, so that the water level in the measuring cup 1 can stably reflect the actual seepage amount in the pipeline. Even if the operator delays the reading time due to handling other urgent matters, the water level in the measuring cup 1 will remain constant and will not change due to external factors, thereby effectively ensuring the accuracy and reliability of the measurement results. Optionally, a sealing cover can be provided on the measuring cup 1 to avoid affecting the accuracy and reliability of the measurement structure due to evaporation of water in the measuring cup 1.

[0032] Please refer to Figures 2-3 The timing switch 2 can include a perforated ball valve 21, a housing 22, a rotating rod 23, a spring 24, a gear 25, and an escapement mechanism 26. The perforated ball valve 21 is arranged in the first water outlet pipe 3, and the housing 22 is located outside the first water outlet pipe 3, and the housing 22 is provided with a mounting cavity. The perforated ball valve 21 is a valve that controls the on-off of fluid by rotating a ball with perforations. Its working principle is based on the rotational movement of the ball. In the open state, when the ball is rotated to align the perforations with the inlet and outlet of the valve body, the fluid can flow smoothly, realizing the connection of the pipeline. In the closed state, when the ball is rotated to be perpendicular to the inlet and outlet of the valve body, the surface of the ball blocks the fluid passage, realizing the closure of the pipeline. The operation mode can be manual (handle, handwheel), electric, pneumatic, etc. to drive the valve rod to rotate the ball by 90° to realize quick opening and closing.

[0033] The rotating rod 23 is partially located in the mounting cavity and is rotatably connected with the housing 22. The two ends of the rotating rod 23 are located outside the mounting cavity, one end of which is connected with the perforated ball valve 21, specifically with the valve rod of the perforated ball valve 21, and the other end is located outside the top of the housing 22, which can be connected with a switch handle for the convenience of the operator.

[0034] The spring 24, the gear 25 and the escapement 26 are located in the mounting cavity; the spring 24 is connected with the inner side wall of the mounting cavity and the rotating rod 23; the gear 25 is arranged on the rotating rod 23, and the gear 25 and the escapement 26 are in transmission connection. The escapement 26 is a component commonly used in the prior art, which comprises a pallet fork, a balance spring, a balance wheel and the like, the spring 24 drives the rotating rod 23 to rotate, the rotating rod 23 drives the gear 25 to rotate, the gear 25 drives the balance wheel of the escapement 26 to rotate, and when the balance wheel moves, the pallet fork will swing at a specific time point to intermittently limit and release the rotation of the balance wheel. In this way, the energy stored in the spring 24 can be uniformly discharged in small amounts, thereby realizing the timing function. When reaching the preset time, the ball completes a 90° rotation to disconnect the first water outlet pipe 3 and the second water outlet pipe 4.

[0035] Please refer to Figure 4 The pipeline closed water experiment water supplement device of the embodiment further comprises a base 6, and at least one measuring cup fixing groove 61 is arranged on the base 6. In the embodiment, the measuring cup fixing grooves 61 are two, and the two measuring cup fixing grooves 61 are arranged on the central axis, and the corresponding measuring cups 1 are also two. One of the measuring cups 1 is used for containing rainwater, and the other measuring cup 1 is used for containing sewage. The diameter of the measuring cup 1 for containing rainwater is greater than the diameter of the measuring cup 1 for containing sewage, that is, the diameter of one of the measuring cup fixing grooves 61 is greater than the diameter of the other measuring cup fixing groove 61. It can be understood that the water seepage amount of the pipeline for rainwater and sewage is different, and the water seepage amount of the sewage is less than that of the rainwater. If the same diameter of the measuring cup 1 is used for the experiment of rainwater and sewage, the water level change in the measuring cup 1 will be small due to the small water seepage amount when the pipeline contains sewage, thereby causing the problem of inaccurate reading by the operator.

[0036] Please refer to Figure 1 Further comprising at least three supporting assemblies 7, one end of the supporting assembly 7 is detachably connected with the base 6, and the other end is used for contacting the ground, so as to support the base 6 on the bottom surface and ensure that the central axis of the base 6 is vertically arranged relative to the water surface. The supporting assembly 7 is detachably connected with the base 6, so as to facilitate the transportation of the whole device. Specifically, the supporting assembly 7 comprises a first connecting rod 71, one end of the first connecting rod 71 is provided with external threads, and a threaded hole is arranged on the base 6, so as to realize the detachable connection of the first connecting rod 71 and the base 6 through threads.

[0037] The support assembly 7 further comprises a second connecting rod 72 and an adjusting member 73, which can be an adjusting knob, and the two ends of the adjusting member 73 are respectively provided with connecting columns, and the outer sides of the two connecting columns are respectively provided with external threads, and the two connecting columns have the same thread rotation direction. The first connecting rod 71 is a non-straight rod, and specifically can be an L-shaped rod. The end of the first connecting rod 71 away from the base 6 and the end of the second connecting rod 72 are provided with threaded holes, so as to be threadedly connected with the connecting columns of the adjusting member 73. The end of the second connecting rod 72 away from the adjusting member 73 is used to contact the ground. Through the setting of the adjusting member 73, the relative position of the base 6 and the ground can be adjusted, so as to ensure that the central axis of the measuring cup 1 on the base 6 is perpendicular to the horizontal plane, so as to ensure the accuracy of the reading of the operator.

[0038] The second water outlet pipe 4 comprises a second water outlet pipe A 41 and a second water outlet pipe B 42, one end of the second water outlet pipe B 42 is connected with the second water outlet pipe A 41, the other end is connected with the float ball valve 5, and the connecting end of the second water outlet pipe B 42 and the second water outlet pipe A 41 is at least partially a flexible pipe. The second water outlet pipe A 41 is a hard pipe, so as to be connected with the timing switch 2. The second water outlet pipe 4 is partially a flexible pipe, so as to be stored and the float ball valve 5 is put into the water surface in the pipeline. The connecting end of the second water outlet pipe B 42 and the float ball valve 5 is a hard pipe, so as to open or close the second water outlet pipe B 42 of the float ball valve 5.

[0039] In another aspect, the application also provides a pipeline closed water test evaluation method, comprising a pipeline closed water test water supplementing device as described above, and further comprising:

[0040] The installation step: the measuring cup 1 is placed at the top of the pipeline, the float ball valve 5 is put into the water surface in the pipeline, and the timing switch 2 is opened. In this step, the central axis of the measuring cup 1 is adjusted to be perpendicular to the horizontal plane by using the adjusting member 73, and different measuring cups 1 are selected according to the dirtiness of the water in the pipeline. When the pipeline is filled with sewage, the sewage containing measuring cup 1 is selected, and when the water in the pipeline is rainwater, the rainwater containing measuring cup 1 is selected.

[0041] The reading step: after waiting for a preset time, the scale line where the water in the measuring cup 1 is located is read. For example, when the timing of the timing switch 2 is 30 minutes, after 30 minutes, the water in the measuring cup 1 is read to obtain the water seepage amount of the pipeline.

[0042] In summary, the application effectively overcomes the various shortcomings in the prior art and has high industrial utilization value.

[0043] The above embodiments are only illustrative of the principles of the present application and its efficacy, and are not intended to limit the present application. Any modification or change made by any person skilled in the art without departing from the spirit and scope of the present application shall be covered by the claims of the present application.

Claims

1. A water replenishing device for pipeline closed water test, characterized in that: include: Measuring cup, timer switch, first water outlet pipe, second water outlet pipe and float valve; The measuring cup is used to hold water, and its outer side is provided with scale lines; The timing switch is connected to the measuring cup via the first water outlet pipe and is connected to the float valve via the second water outlet pipe; the timing switch is used to disconnect the first water outlet pipe and the second water outlet pipe after a preset time has passed; The float valve is used to open the second water outlet pipe when the water level drops, so as to replenish the water in the measuring cup into the pipeline.

2. A water replenishing device for pipeline closed water test according to claim 1, characterized in that: The timing switch comprises: a perforated ball valve, a housing, a rotating rod, a spring, a gear and an escapement mechanism; The perforated ball valve is arranged in the first water outlet pipe, the housing is located outside the first water outlet pipe, and a mounting cavity is arranged in the housing; The rotating rod is partially located in the mounting cavity and is rotatably connected to the housing. Both ends of the rotating rod are respectively located outside the mounting cavity, and one end thereof is connected to the perforated ball valve. The mainspring, gear and escapement mechanism are located in the installation cavity; the mainspring is connected to the inner side wall of the installation cavity and the rotating rod; the gear is arranged on the rotating rod, and the gear is connected to the escapement mechanism in a transmission manner.

3. The water replenishing device for pipeline closed water test according to claim 1, characterized in that: It also includes a base, on which at least one measuring cup fixing groove is provided.

4. A water replenishing device for pipeline closed water test according to claim 3, characterized in that: There are two measuring cup fixing grooves.

5. The water replenishing device for pipeline closed water test according to claim 3, characterized in that: It also includes at least three supporting components, one end of which is detachably connected to the base, and the other end is used to contact the ground to support the base on the bottom surface.

6. A water replenishing device for pipeline closed water test according to claim 5, characterized in that: The support assembly includes a first connecting rod, and the first connecting rod is threadedly connected to the base.

7. A water replenishing device for pipeline closed water test according to claim 6, characterized in that: The support assembly further includes a second connecting rod and an adjusting member, wherein one end of the adjusting member is threadedly connected to the second connecting rod, and the other end is threadedly connected to the second connecting rod, and the threads at both ends of the adjusting member have the same rotation direction; The first connecting rod is a non-straight rod, and one end of the second connecting rod away from the adjusting member is used for contacting the ground.

8. The water replenishing device for pipeline closed water test according to claim 1, characterized in that: The second water outlet pipe includes a second water outlet pipe A and a second water outlet pipe B. One end of the second water outlet pipe B is connected to the second water outlet pipe A, and the other end is connected to the float valve. The connecting end between the second water outlet pipe B and the second water outlet pipe A is at least partially a hose.

9. The water replenishing device for pipeline closed water test according to claim 8, characterized in that: The connection end between the second water outlet pipe B and the float valve is a hard pipe.

10. A pipeline water-tightness test evaluation method, characterized in that: The device comprises a water replenishing device for a pipeline closed water test according to any one of claims 1 to 9, further comprising: Installation steps: Place the measuring cup on the top of the pipe, place the float valve on the water surface in the pipe and turn on the timer switch; Reading steps: After waiting for the preset time, read the scale line where the water in the measuring cup is.

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