CN112763680A

CN112763680A - Water quality monitoring device of drinking water supply pipe network

Info

Publication number: CN112763680A
Application number: CN202110161615.2A
Authority: CN
Inventors: 史建兴
Original assignee: Beijing New Water Jingwei Water Engineering Co ltd
Current assignee: Beijing New Water Jingwei Water Engineering Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-05-07
Anticipated expiration: 2041-02-05
Also published as: CN112763680B

Abstract

The utility model relates to a water quality monitoring device who drinks water supply pipe network in water quality monitoring technical field, it is including setting up the detection mechanism who is used for carrying out the detection to quality of water on the branch pipe supplies water, one side of detection mechanism is connected with an inlet tube, the other end of inlet tube stretches into to supply water and divides pipe and inlet tube port orientation and supply water to divide pipe rivers opposite direction, detection mechanism's opposite side is connected with an outlet pipe, the other end of outlet pipe stretches into to supply water and divides pipe and outlet pipe port orientation and supply water to divide pipe rivers same direction, supply water and still be provided with a controller that is used for transmitting detection mechanism's testing result to water quality monitoring center on the branch pipe. This application has the effect that improves the monitoring efficiency and the user water safety of water supply intraductal water.

Description

Water quality monitoring device of drinking water supply pipe network

Technical Field

The utility model belongs to the technical field of water quality monitoring technique and specifically relates to a water quality monitoring device of drinking water supply pipe network is related to.

Background

Water is a source of life, people can not leave water in life and production activities, and the quality of drinking water is closely related to the health of people. With the development of social economy, scientific progress and improvement of the living standard of people, the requirement of people on the water quality of drinking water is continuously improved.

Present water quality monitoring mostly detects through the water source that extracts on water supply water source or the water main, but can't divide the real-time supervision of intraductal water source to the water supply like this, when the water supply is divided and is led to the pollutant to reveal because of long-time the use and get into in the water supply pipe, easily makes the data of monitoring not accurate enough and real-time, and then influences the water safety with the user that the water supply is divided and is managed the intercommunication.

Disclosure of Invention

In order to improve the monitoring efficiency and the user's water safety nature of water supply intraductal water, this application provides a water quality monitoring device who drinks the water supply pipe network.

The application provides a water quality monitoring device of drinking water supply pipe network adopts following technical scheme:

the utility model provides a water quality monitoring device who drinks water supply pipe network, including setting up the detection mechanism who is used for carrying out the detection to quality of water on the branch pipe supplies water, one side of detection mechanism is connected with an inlet tube, the other end of inlet tube stretches into to supply water and divides pipe and inlet tube port orientation and water supply to divide pipe rivers opposite direction, the opposite side of detection mechanism is connected with an outlet pipe, the other end of outlet pipe stretches into to supply water and divides pipe and outlet pipe port orientation and water supply to divide pipe rivers same direction, it is used for transmitting the testing result of detection mechanism to the controller of quality of water surveillance center still to be provided with one on the branch pipe supplies water.

Through adopting above-mentioned technical scheme, the water that supplies water in the branch pipe is when the inlet tube, under hydraulic effect, can flow into the inlet tube in proper order, detection mechanism and outlet pipe, and flow into once more from the outlet pipe and supply in the water pipe, water is when through detection mechanism, detection mechanism can detect the multinomial index of water, the data that detects out then transmit the quality of water monitoring center through the controller, carry out real-time control to quality of water for the staff, thereby the monitoring efficiency and the user's that supply water to manage has improved the water safety.

Optionally, the detection mechanism includes four detection tubes that are used for installing check out test set, and four detection tubes are towards the one end and the water piping connection of inlet tube, and the other end and the play water piping connection of four detection tubes are connected with PH meter, dissolved oxygen apparatus, spectrophotometer and thermometer on four detection tubes respectively.

Through adopting above-mentioned technical scheme, water in the inlet tube flows into four detecting tubes respectively in, PH meter on the detecting tube, dissolved oxygen apparatus, spectrophotometer and thermometer are then the pH value of measurable quantity play water respectively, the content of aquatic dissolved oxygen, the numerical value of the total iron of phosphorus in aquatic and the temperature value of water, can carry out preliminary judgement to the situation of water according to these numerical value staff, and the part of each detecting instrument sets up, the measuring error that a plurality of detecting instrument caused has been avoided setting up in same detecting tube, the measuring accuracy has been improved.

Optionally, a first pipe barrel is arranged between the water inlet pipe and the detection pipes, the water inlet pipe is connected with the center of the side wall of the first pipe barrel, the detection pipes are connected with one side of the first pipe barrel, which deviates from the water inlet pipe, and the four detection pipes are evenly distributed along the length direction of the first pipe barrel, the other ends of the four detection pipes are jointly connected with a second pipe barrel, and the water outlet pipe is connected with one side of the second pipe barrel, which deviates from the detection pipes.

Through adopting above-mentioned technical scheme, the arrangement of first bobbin and second bobbin makes the water yield of four sense tubes of flowing through more balanced, has reduced because of the water yield in the partial sense tube is too little and leads to detecting the condition emergence of inaccurate, and then has improved water quality testing's stability.

Optionally, the second pipe barrel includes a first water return pipe connected to the detection pipe and a second water return pipe connected to the water outlet pipe, the first water return pipe and the second water return pipe are parallel to each other in length direction, and one end of the first water return pipe and one end of the second water return pipe are connected to each other through a bent pipe.

By adopting the technical scheme, the water return same-form water supply system formed by the first pipe barrel, the first water return pipe and the second water return pipe further improves the uniformity of the water quantity flowing through the four detection pipes.

Optionally, the detection tube includes a first sub-tube, a second sub-tube and a third sub-tube, the first sub-tube and the third sub-tube are respectively connected to the first tube barrel and the third tube barrel, and two ends of the second sub-tube are detachably connected to the first sub-tube and the third sub-tube through quick release assemblies; and the PH meter, the dissolved oxygen determinator, the spectrophotometer, the thermometer and the like are respectively arranged on the corresponding second branch pipes.

Through adopting above-mentioned technical scheme, remove the quick detach subassembly and manage the fixed restriction of first minute and third minute to the second, can dismantle the PH meter etc. on and with the second minute, overall structure is simple to operate, has improved the change efficiency of staff to PH meter, dissolved oxygen apparatus, spectrophotometer and thermometer.

Optionally, the quick release assembly comprises a ring pipe coaxially fixed at two ends of the second branch pipe, a first ring groove for the ring pipe to be inserted and clamped is formed in each of end faces corresponding to the first branch pipe and the third branch pipe, the second branch pipe comprises a first pipe body and a second pipe body, a corrugated pipe is connected between the first pipe body and the second pipe body, the extension length of the corrugated pipe is not less than the sum of the lengths of the two ring pipes, and a pushing assembly for extending the corrugated pipe to enable the two ring pipes to be clamped in the two first ring grooves is further arranged between the first pipe body and the second pipe body.

Through adopting above-mentioned technical scheme, when needs are changed PH meter etc. the staff at first removes the promotion that promotes the subassembly to first body and second body, then contracts the bellows, deviates from in two first annular respectively until two ring canals, can accomplish the mutual separation of first body and second body and first minute pipe and third minute pipe, and simple structure simple operation has reduced the dismantlement time of PH meter etc..

Optionally, a second annular that communicates with first body and second body outer peripheral face is respectively seted up on the relative lateral wall of first body and second body, promote the subassembly including jointly two C templates of card establishing in two second annular, the mutual lock of two C templates forms whole pipe, and common cover is established and is slided on first body and the second body and is had one to be used for the fixed elastic rubber tube of the mutual lock of two C templates.

Through adopting above-mentioned technical scheme, two C template cards are established in two second spouts, have the effect of supporting to first body and second body, make the bellows be in the extension state, and then establish two stable cards of ring canal in two first annular, and the free separation of C template and second annular has been restricted in the outside of two C templates to the elastic rubber pipe box is established to the outside of two C templates to stable fixing such as a first body and second body and PH meter is divided between pipe and third branch.

Optionally, each cover is established and is fixed with a spacing pipe on first body and the second body, and spacing pipe is located and is close to second annular groove department on first body or the second body, and the both ends of elasticity rubber tube lean on with the relative inner wall of two spacing pipes respectively.

Through adopting above-mentioned technical scheme, the free slip of elasticity rubber tube on first body and second body has been avoided in the arrangement of spacing pipe, further improvement the support stability of C template to first body and second body.

Optionally, the top of the controller is provided with a solar panel for supplying power to the controller and the like.

Through adopting above-mentioned technical scheme, solar panel's arrangement makes the clean energy supply equipment such as controller that it produced to can carry out the installation of according to the circumstances to the local conditions, improve the adaptability of device.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the monitoring efficiency of the water supply branch pipe and the water use safety of a user are improved, water flows into the water inlet pipe, the detection mechanism and the water outlet pipe in sequence, and flows into the water supply branch pipe from the water outlet pipe again, when the water passes through the detection mechanism, the detection mechanism can detect multiple indexes of the water, and the detected data are transmitted to the water quality monitoring center through the controller so that a worker can monitor the water quality in real time;

2. the measuring accuracy is improved, the PH meter, the dissolved oxygen determinator, the spectrophotometer and the thermometer on the detecting tube can respectively measure the pH value of water, the content of dissolved oxygen in water, the numerical value of total iron of phosphorus in water and the temperature value of water, the preliminary judgment can be carried out on the condition of water according to the numerical value staff, and the measuring errors caused by the fact that a plurality of detecting instruments are arranged in the same detecting tube are avoided due to the fact that the detecting instruments are separately arranged.

Drawings

FIG. 1 is a schematic view of the overall structure of a water quality monitoring device according to an embodiment of the present application;

FIG. 2 is a sectional view showing the inner structure of a water supply branch pipe;

FIG. 3 is a sectional view showing the structure in the detection tube;

fig. 4 is an enlarged view of a portion a in fig. 3.

Description of reference numerals: 1. water supply branch pipes; 2. a detection mechanism; 21. a detection tube; 211. a first branch pipe; 2111. a first ring groove; 212. a second branch pipe; 213. thirdly, pipe distribution; 22. a pH meter; 23. a dissolved oxygen meter; 24. a spectrophotometer; 25. a thermometer; 26. a controller; 27. a solar panel; 28. a valve; 3. a water intake assembly; 31. a first barrel; 32. a water inlet pipe; 4. a water return assembly; 41. a second barrel; 411. a first water return pipe; 412. a second water return pipe; 42. a water outlet pipe; 5. a fixing mechanism; 51. a ring pipe; 52. a first pipe body; 521. a second ring groove; 53. a second tube body; 54. a bellows; 55. c-shaped plates; 56. a limiting pipe; 57. an elastic rubber tube.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a water quality monitoring device of a drinking water supply pipe network. Referring to fig. 1, the water quality monitoring device comprises a detection mechanism 2 arranged on a water supply branch pipe 1 and used for detecting water quality, a water inlet component 3 used for connecting the water inlet of the detection mechanism 2 with the water supply branch pipe 1 is arranged on one side of the detection mechanism 2 opposite to the water flow direction of the water supply branch pipe 1, and a water return component 4 used for connecting the water outlet of the detection mechanism 2 with the water supply branch pipe 1 is arranged on one side of the detection mechanism 2 identical to the water flow direction of the water supply branch pipe 1.

Referring to fig. 2, the water inlet assembly 3 includes a first pipe barrel 31 disposed at the top of the water supply branch pipe 1 and having two sealed ends, the first pipe barrel 31 is connected to the detection mechanism 2 toward one side of the detection mechanism 2, the axis of the first pipe barrel 31 is perpendicular to the water supply branch pipe 1, a water inlet pipe 32 is connected to a side of the first pipe barrel 31 away from the detection mechanism 2 near the center, the outer diameter of the water inlet pipe 32 is smaller than the inner diameter of the water supply branch pipe 1, the other end of the water inlet pipe 32 extends toward the water supply branch pipe 1 and is connected to the water supply branch pipe 1, the end of the water inlet pipe 32 extends into the water supply branch pipe 1, the opening direction of the water inlet pipe 32 is opposite to the water flow direction in the water supply branch pipe 1, and part of water in the water supply branch pipe 1 can flow into the water inlet pipe 32 through the port of the water inlet pipe 32 and finally.

Referring to fig. 2, the water return assembly 4 includes a second pipe 41, one side of the second pipe 41 facing the detection mechanism 2 is connected to the detection mechanism 2, the second pipe 41 includes a first water return pipe 411 disposed at the top of the water supply branch pipe 1 and perpendicular to the axis of the water supply branch pipe 1, and a second water return pipe 412 parallel to the first water return pipe 411, one end of the first water return pipe 411 and one end of the second water return pipe 412 are connected to each other by a bent pipe, the other end of the first water return pipe 411 is sealed, the other end of the second water return pipe 412 is connected to an outlet pipe 42, the outer diameter of the outlet pipe 42 is equal to the outer diameter of the inlet pipe 32, the other end of the outlet pipe 42 extends in the direction of the water supply branch pipe 1 and is connected to the water supply branch pipe 1, the end of the outlet pipe 42 extends into the water supply branch pipe 1 and the opening of the outlet pipe 42 faces the same direction as the water flow direction in the water supply branch, The second water returning pipe 412 and the water outlet pipe 42 again flow into the service water inlet branch 1 and continue to be carried by the service water inlet branch 1.

Referring to fig. 1 and 2, the detection mechanism 2 includes four detection tubes 21 disposed between the first tube 31 and the first water return tube 411, two ends of the detection tubes 21 are respectively connected to the first tube 31 and the first water return tube 411, the four detection tubes 21 are uniformly distributed along the length direction of the first tube 31, and the four detection tubes 21 are respectively connected to a PH meter 22, a dissolved oxygen meter 23, a spectrophotometer 24 and a thermometer 25; the water supply branch pipe 1 is also fixed with a controller 26 for transmitting the detection results of the PH meter 22, the dissolved oxygen determinator 23, the spectrophotometer 24 and the thermometer 25 to the water quality monitoring center, and the top of the controller 26 is provided with a solar panel 27 for supplying power to the controller 26, the PH meter 22 and other devices.

When the water in the water supply branch pipe 1 reaches the port of the water inlet pipe 32, part of the water enters the water inlet pipe 32 and flows into the first pipe barrel 31 under the pushing of the water pressure, and then the water in the first pipe barrel 31 respectively flows into the four detection pipes 21, the PH meter 22, the dissolved oxygen determinator 23, the spectrophotometer 24 and the thermometer 25 on the detection tube 21 can respectively measure the pH value of the effluent, the content of dissolved oxygen in the effluent, the value of total phosphorus and total iron in the effluent and the temperature value of the effluent, the measured values are transmitted to a water quality monitoring center through a controller 26 to be used for workers to monitor the water quality in real time, when one or more measured values of the water are higher than the normal standard, the worker can pause the water supply of the corresponding water supply branch pipe 1, pump the water in the corresponding water supply branch pipe 1 out and send the water to a laboratory for more accurate detection, so that the monitoring efficiency of the water supply branch pipe 1 and the water use safety of a user are improved; and the water return same-form water supply system formed by the first pipe barrel 31, the first water return pipe 411 and the second water return pipe 412 enables the water quantity flowing through the four detection pipes 21 to be more balanced, thereby reducing the occurrence of inaccurate detection caused by too little water flow in part of the detection pipes 21 and further improving the stability of water quality detection.

Referring to fig. 3 and 4, in order to facilitate the replacement of the PH meter 22, the dissolved oxygen measuring instrument 23, the spectrophotometer 24 and the thermometer 25 by the worker, the detecting tube 21 includes a first branch tube 211, a second branch tube 212 and a third branch tube 213, the PH meter 22, the dissolved oxygen measuring instrument 23, the spectrophotometer 24 and the thermometer 25 are respectively fixed on the corresponding second branch tube 212, opposite ends of the first branch tube 211 and the third branch tube 213 are respectively connected with the first tube barrel 31 and the first water return tube 411, the first branch tube 211 and the third branch tube 213 are respectively connected with a valve 28, and two ends of the second branch tube 212 are detachably connected with opposite ends of the first branch tube 211 and the third branch tube 213 through the fixing mechanism 5.

Referring to fig. 3 and 4, the fixing mechanism 5 includes a ring pipe 51 coaxially fixed at each end of the second branch pipe 212, an outer diameter of the ring pipe 51 is smaller than an outer diameter of the second branch pipe 212, the second branch pipe 212 includes a first pipe 52 and a second pipe 53, the two ring pipes 51 are respectively fixed at each end of the first pipe 52 and the second pipe 53, a first ring groove 2111 for inserting the corresponding ring pipe 51 is respectively formed at each end of the first branch pipe 211 and the third branch pipe 213, the first ring groove 2111 is mutually communicated with the inside of the first branch pipe 211 or the third branch pipe 213, a corrugated pipe 54 is connected between the first pipe 52 and the second pipe 53, and when the two ring pipes 51 are respectively inserted into the first ring groove 2111 in the first branch pipe 211 and the third branch pipe 213, the corrugated pipe 54 extends and a length of the corrugated pipe 54 is greater than a sum of lengths of the two ring pipes 51.

Referring to fig. 3 and 4, the opposite side walls of the first tube 52 and the second tube 53 are respectively provided with a second annular groove 521 communicated with the outer peripheral surfaces of the first tube 52 and the second tube 53, two C-shaped plates 55 are clamped in the two second annular grooves 521 together, the outer diameter of the C-shaped plate 55 is equal to the outer diameter of the first tube 52 and the second tube 53, the two C-shaped plates 55 are mutually buckled to form a whole tube, the corrugated tube 54 is positioned on the inner side of the C-shaped plate 55, a limiting tube 56 is coaxially sleeved and fixed on the first tube 52 and the second tube 53, the limiting pipes 56 are positioned on the first pipe body 52 or the second pipe body 53 and close to the second annular groove 521, a gap is reserved between the limiting pipes and the second annular groove 521, an elastic rubber pipe 57 is clamped between the two limiting pipes 56, and the elastic rubber pipe 57 is sleeved on the two C-shaped plates 55 and the first pipe body 52 and the second pipe body 53 adjacent to the two C-shaped plates 55, so that the two annular pipes 51 are stably inserted into the two first annular grooves 2111; in addition, a sealing pad is attached to the side wall of the ring 51 close to the first ring slot 2111 to reduce the possibility of water leakage at the connection between the first tube 52 and the first branch tube 211 and the connection between the second tube 53 and the third branch tube 213.

When the PH meter 22, the dissolved oxygen meter 23, the spectrophotometer 24 or the thermometer 25 needs to be replaced, the operator first closes the valves 28 in the first branch pipe 211 and the third branch pipe 213, then the elastic rubber tube 57 is elastically slid out from the limiting tube 56 on one side, the limitation of the two C-shaped plates 55 is released, and then the worker takes the two C-shaped plates 55 out of the second annular groove 521, the first tube 52 and the second tube 53 are then moved toward each other, so that the bellows 54 is compressed and shortened until the two collars 51 are disengaged from the corresponding first ring grooves 2111, can dismantle detector instruments such as PH meter 22 and change into detecting instrument such as new first body 52, second body 53 and PH meter 22, overall structure is simple easy operation, has improved the change efficiency of staff to PH meter 22, dissolved oxygen apparatus 23, spectrophotometer 24 and thermometer 25.

The implementation principle of the water quality monitoring device of the drinking water supply pipe network in the embodiment of the application is as follows: when water in the water supply branch pipe 1 reaches the port of the water inlet pipe 32, partial water enters the water inlet pipe 32 and flows into the first pipe barrel 31 under the pushing of water pressure, then the water in the first pipe barrel 31 flows into the four detection pipes 21 respectively, the PH meter 22, the dissolved oxygen determinator 23, the spectrophotometer 24 and the thermometer 25 on the detection pipes 21 can measure the pH value of the water, the content of the dissolved oxygen in the water, the value of total iron phosphorus in the water and the temperature value of the water respectively, and the measured values are transmitted to the water quality monitoring center through the controller 26 to be monitored by workers in real time for water quality, so that the monitoring efficiency of the water supply branch pipe 1 and the water safety of users are improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a water quality monitoring device of drinking water supply pipe network which characterized in that: including setting up detection mechanism (2) that are used for on water supply branch pipe (1) carrying out the detection to quality of water, one side of detection mechanism (2) is connected with an inlet tube (32), the other end of inlet tube (32) stretches into water supply branch pipe (1) and inlet tube (32) port orientation and water supply branch pipe (1) rivers opposite direction, the opposite side of detection mechanism (2) is connected with an outlet pipe (42), the other end of outlet pipe (42) stretches into water supply branch pipe (1) and outlet pipe (42) port orientation and water supply branch pipe (1) rivers direction the same, still be provided with one on water supply branch pipe (1) and be used for transmitting the testing result of detection mechanism (2) to quality of water control center controller (26).

2. A water quality monitoring device for a drinking-water supply pipe network as claimed in claim 1, wherein: detection mechanism (2) are including four detecting tube (21) that are used for installing check out test set, and four detecting tube (21) are connected with inlet tube (32) towards the one end of inlet tube (32), and the other end and outlet pipe (42) of four detecting tube (21) are connected, are connected with PH meter (22), dissolved oxygen apparatus (23), spectrophotometer (24) and thermometer (25) on four detecting tube (21) respectively.

3. A water quality monitoring device for a drinking-water supply pipe network as claimed in claim 2, wherein: be provided with a first bobbin (31) between inlet tube (32) and detection tube (21), inlet tube (32) are connected with the lateral wall center department of first bobbin (31), and detection tube (21) are connected and four detection tube (21) are along the length direction evenly distributed of first bobbin (31) with one side that first bobbin (31) deviate from inlet tube (32), and the other end of four detection tube (21) is connected with a second bobbin (41) jointly, and outlet pipe (42) are connected with one side that second bobbin (41) deviate from detection tube (21).

4. A water quality monitoring device for a drinking-water supply pipe network as claimed in claim 3, wherein: the second pipe barrel (41) comprises a first water return pipe (411) connected with the detection pipe (21) and a second water return pipe (412) connected with the water outlet pipe (42), the length directions of the first water return pipe (411) and the second water return pipe (412) are parallel to each other, and one end of the first water return pipe (411) is connected with one end of the second water return pipe (412) through a bent pipe.

5. A water quality monitoring device for a drinking-water supply pipe network as claimed in claim 3, wherein: the detection tube (21) comprises a first branch tube (211), a second branch tube (212) and a third branch tube (213), the first branch tube (211) and the third branch tube (213) are respectively connected with the first tube barrel (31) and the third tube barrel, and two ends of the second branch tube (212) are detachably connected with the first branch tube (211) and the third branch tube (213) through quick-release components; the PH meter (22), the dissolved oxygen measuring instrument (23), the spectrophotometer (24), the thermometer (25) and the like are respectively arranged on the corresponding second branch pipes (212).

6. A water quality monitoring device of a drinking-water supply pipe network according to claim 5, wherein: the quick-release assembly comprises ring pipes (51) coaxially fixed at two ends of a second branch pipe (212), first ring grooves (2111) for the ring pipes (51) to be inserted and clamped are respectively formed in the corresponding end faces of the first branch pipe (211) and a third branch pipe (213), the second branch pipe (212) comprises a first pipe body (52) and a second pipe body (53), a corrugated pipe (54) is connected between the first pipe body (52) and the second pipe body (53), the extension length of the corrugated pipe (54) is not less than the sum of the lengths of the two ring pipes (51), and a pushing assembly used for extending the corrugated pipe (54) to enable the two ring pipes (51) to be clamped in the two first ring grooves (2111) is further arranged between the first pipe body (52) and the second pipe body (53).

7. The water quality monitoring device of the drinking water supply pipe network according to claim 6, wherein: the utility model discloses a pipe joint, including first body (52) and second body (53), the second annular (521) that respectively seted up one and first body (52) and second body (53) outer peripheral face intercommunication on the relative lateral wall of first body (52) and second body (53), push assembly includes two C template (55) of establishing in two second annular (521) of common card, and two mutual locks of C template (55) form whole pipe, and common cover is established and is slided on first body (52) and second body (53) and is equipped with one and be used for elastic rubber tube (57) fixed with two mutual locks of C template (55).

8. The water quality monitoring device of the drinking water supply pipe network according to claim 7, wherein: each cover is established and is fixed with a spacing pipe (56) on first body (52) and second body (53), and spacing pipe (56) are located first body (52) or second body (53) and are close to second annular (521) department, and the both ends of elasticity rubber tube (57) are leaned on with the relative inner wall of two spacing pipes (56) respectively.

9. A water quality monitoring device for a drinking-water supply pipe network as claimed in claim 1, wherein: the top of the controller (26) is provided with a solar panel (27) for supplying power to the controller (26) and the like.