CN204064591U - Collector runner vertical automatic pressure test machine - Google Patents

Abstract

The utility model discloses a vertical automatic pressure testing machine of heat collector runner, including the support, set up the control box in support one side, at least including an experimental station on the support, be equipped with water injection system and turbocharging system in the control box, through water injection system and turbocharging system simultaneously to heat collector runner in water injection system, shortened the operating time of turbocharging water pump greatly, reduced the energy consumption, wearing and tearing to can eliminate "nest gas" phenomenon in the heat collector runner, the play pipeline has adopted electronic ball valve or other valves that can slowly close, has eliminated the water hammer phenomenon. By adopting a reasonable design method, the water injection, pressurization, pressure maintaining and pressure relief processes can reliably and fully automatically operate during pressure testing, an interruption function is added in the circuit design, namely if water leakage is found in the water injection, pressurization and pressure maintaining stages, an interruption button can be pressed after the water leakage level is determined, the system immediately enters the pressure relief stage, the system operation time is shortened, and the work efficiency is improved.

Description

Collector runner vertical automatic pressure test machine

technical field

The utility model relates to a pressure testing machine for checking whether there is leakage in a pipeline, more specifically, relates to a vertical automatic pressure testing machine for checking whether there is leakage in a flow channel of a heat collector.

Background technique

The collector flow channel is an important part of the flat solar collector, and the collector flow channel and the heat absorbing plate form the collector plate core of the flat solar collector. The collector flow channel is composed of a header pipe and several row pipes welded with the header pipe. The collector flow channel welded by the header pipe and several row pipes needs to be inspected, and then connected with the suction pipe after confirming that there is no leakage. The executive plate is assembled into the collector plate core, so that the quality of the flat solar collector is effectively guaranteed. Otherwise, if there is leakage in the flow channel of the collector, the quality of the flat solar collector will be greatly reduced, or even unusable, which is not conducive to improving the product qualification rate of the flat solar collector, and also brings huge losses to users.

At present, in the solar energy industry, the pressure test of the collector flow channel is mostly done manually, and a small part uses pressure test equipment. Manual pressure testing is labor-intensive, workers are prone to fatigue, labor costs are high, the pressure test pressure and pressure holding time cannot be guaranteed for a long time, and safety accidents and product quality accidents are prone to occur. This method has long been eliminated. In view of the various disadvantages of manual pressure testing, some enterprises have trial-produced pressure testing equipment, but such equipment has extremely poor reliability due to design problems. Therefore, even though the solar energy industry has developed into a large-scale industry, such equipment is still Not widely promoted. The traditional vertical pressure test equipment used for collector flow channels mainly has the following defects:

1. There is a "water hammer" problem in the traditional vertical pressure test equipment used for the collector flow channel, which is easy to cause damage to the pipeline and pipe fittings of the vertical pressure test equipment for the collector flow channel, seriously affecting the service life of the equipment .

2. The traditional vertical pressure test equipment used for the flow channel of the collector can only inject water into the flow channel of the collector through the booster pipeline. The working time and wear and tear, and the time required for pressure testing is long, and the pressure testing efficiency of the equipment is low.

3. If water leakage is found in the stages of water injection, pressurization, and pressure maintenance, the pressure cannot be released in time, the pressure test process will be interrupted, the running time of the equipment will be prolonged, and the working efficiency of the equipment pressure test will be low.

4. The traditional vertical pressure test equipment used for the collector flow channel can only inject water into the collector flow channel through the pressurized pipeline. The flow rate input into the collector flow channel is small, and the water injection stage cannot ensure that the water outlet pipeline is full of water. The water flow leads to poor exhaust, and there is a problem of "cavity" in the flow channel of the collector. When the drain valve on the outlet pipe has been closed, "cavity" occurs in the flow channel of the collector due to the problem of gas. Water cannot be injected into the position where the air pocket is generated, and water injection and pressure test cannot be performed on the position where the air pocket is generated. Leakage in some positions where the air pocket should be generated will not be detected, which greatly reduces the reliability of pressure test and leak detection.

Utility model content

The purpose of this utility model is to overcome the above-mentioned defects in the prior art, to provide a method that can eliminate the water hammer problem in the vertical pressure test equipment of the collector flow channel, thereby prolonging the use of the vertical pressure test equipment of the collector flow channel The collector runner vertical automatic pressure test machine can greatly improve the working efficiency of the collector runner vertical pressure test equipment and the reliability of the pressure test and leak detection, and is convenient for the follow-up process to carry out product assembly.

In order to achieve the above object, the technical scheme provided by the utility model is as follows:

A vertical automatic pressure test machine for collector flow channels, comprising a bracket, a control box arranged on one side of the bracket, the bracket includes at least one test station, and the test station has a first A driving device, a second driving device, a water inlet joint, a water outlet joint, a first sealing joint and a second sealing joint, the water inlet joint or the first sealing joint is in transmission connection with the first driving device, the water outlet joint or the first sealing joint The second sealing joint is connected to the second driving device, and also includes a water injection system and a pressurization system installed in the control box and connected in parallel with the water inlet pipeline of the water inlet joint, and connected with the water outlet pipeline installed on the water outlet joint. Slow closing valves to eliminate water hammer.

The water injection system includes a water injection pipeline connected with the water inlet pipeline, a first electromagnetic valve and a first one-way valve installed on the water injection pipeline, and the water injection pipeline is connected with the water inlet pipeline of the water inlet joint.

The pressurization system includes a water storage tank, a pressurization pipeline connected with the water storage tank, a booster water pump installed on the pressurization pipeline, a second one-way valve, a water inlet pipeline between the pressurization pipeline and the water inlet joint connected.

It also includes a controller, a pressure sensor installed on the water inlet pipeline of the water inlet joint, a monitoring device installed on the water outlet pipeline of the water outlet joint, the signal input end of the controller is connected to the pressure sensor and the monitoring device, The signal output end of the controller is in communicative connection with the booster water pump, the first solenoid valve and the slowly closing valve.

As a preference, in the technical scheme of the above-mentioned collector runner vertical automatic pressure test machine, the first tee is installed on the water inlet pipeline of the water inlet joint, the water inlet joint, the water injection system and the pressurization system respectively communicate with corresponding interfaces on the first tee.

As a preference, in the above-mentioned technical scheme of the vertical automatic pressure test machine for the collector flow channel, a second three-way is installed on the water injection pipeline, and the water inlet pipeline of the water storage tank is connected with the second three-way A float valve is installed on the water inlet pipeline of the water storage tank located in the water storage tank.

As a preference, in the technical solution of the above-mentioned vertical automatic pressure test machine for the collector flow channel, a pressure gauge for displaying the pressure in the collector flow channel is installed on the outlet pipe of the water outlet joint.

Further, in the technical solution of the above-mentioned vertical automatic pressure test machine for the collector flow channel, a sewage discharge device is installed at the bottom of the water storage tank, and the sewage discharge device is a sewage discharge pipe connected with the water storage tank. The second electromagnetic valve on the sewage pipe is formed, and the second electromagnetic valve is connected with the controller in communication.

Further, the bracket is also provided with a control hand valve for controlling the first driving device and the second driving device.

Compared with the prior art, the beneficial effect of the utility model is that: by installing at least one test station on the support, the test station has a first drive device, a second drive device, a water inlet joint installed on the support , a water outlet joint, a first sealing joint and a second sealing joint, the water inlet joint or the first sealing joint is in transmission connection with the first driving device, the water outlet joint or the second sealing joint is in transmission connection with the second driving device, and It includes a water injection system and a pressurization system installed in the control box and connected in parallel with the water inlet pipeline of the water inlet joint, and a slowly closing valve installed on the water outlet pipeline of the water outlet joint for eliminating water hammer. In the water injection stage, water can be injected into the collector flow channel through the water injection system and the pressurization system at the same time, which greatly shortens the water injection time, and the water inflow is faster with a large flow rate, and it is easy to completely discharge the air in the collector flow channel, eliminating the accumulation of heat in the collector. The problem of nest gas in the flow channel can greatly improve the work efficiency of the collector flow vertical pressure test equipment and the reliability of pressure test and leak detection; the valve that can be slowly closed is used on the outlet pipe to reduce or even eliminate water hammer , thereby prolonging the service life of the collector runner vertical pressure test equipment.

Description of drawings

Fig. 1 is the structural principle diagram of the vertical automatic pressure test machine of the heat collector described in the utility model;

Fig. 2 is a three-dimensional structure diagram of Embodiment 1 of the vertical automatic pressure test machine for single-station heat collectors described in the utility model;

Fig. 3 is a three-dimensional structure diagram of Embodiment 2 of the vertical automatic pressure test machine for double-station heat collectors of the present invention.

The three-dimensional automatic pressure test machine for the collector runner described in the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Detailed ways

The following is the best example of the three-dimensional automatic pressure test machine for the collector runner described in the utility model, and does not limit the protection scope of the utility model accordingly.

Embodiment one

Please refer to Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 have shown a kind of single-station heat collector flow channel vertical automatic pressure test machine, comprising support 1, the control box 20 that is installed on support 1 side, support 1 is provided with a test station 21, the test station 21 includes the first driving device 2, the second driving device 3, the water inlet joint 4, the water outlet joint 5, the first sealing joint 22 installed on the support 1 and the second sealing joint 23, the first driving device 2 and the second driving device 3 adopt air cylinders in this implementation, of course, they can also be replaced by hydraulic cylinders or devices that can realize linear reciprocating motion using servo motors and screw mandrels. A sealing joint 22 is in transmission connection with the first driving device 2, and the water outlet joint 5 is in transmission connection with the second driving device 3, and also includes a water inlet pipe installed in the control box 20 and connected in parallel with the water inlet pipe of the water inlet joint 4. The water injection system 7 and the pressurization system 8, and the slowly closing valve 9 installed on the water outlet pipeline of the water outlet joint 5, in this embodiment, the slowly closing valve 9 is an electric ball valve, which can also be automatically controlled by hydraulic force Valves, multi-function water pump control valves and other devices that can be closed slowly enable the system pipeline to proceed smoothly when the pressurization is closed, thereby reducing or even eliminating the phenomenon of water hammer, improving the reliability of the system, and ensuring that the equipment can be used stably for a long time.

Of course, the water inlet joint 4 can also be connected in transmission with the first driving device 2 , and the second sealing joint 23 is in transmission connection with the second driving device 3 .

When the heat collector flow channel is installed on the test station, the first drive device 2 and the second drive device 3 advance to compress the heat collector flow channel, so that the water inlet joint 4, the water outlet joint 5, and the first sealing joint 22 and the second sealing joint 23 are respectively sealed and connected with the corresponding water inlet or water outlet of the heat collector flow channel.

When the heat collector flow channel is unloaded, the first drive device 2 and the second drive device 3 retreat to loosen the heat collector flow channel, and then the heat collector flow channel is unloaded.

In this embodiment, the water injection system 7 includes a water injection pipeline 71 connected to the water inlet pipeline, a first solenoid valve 72 and a first one-way valve 73 installed on the water injection pipeline 71 to control the water injection system 7 And to prevent backflow, the water injection system 7 is connected with the water inlet pipeline of the water inlet joint 4; The booster water pump 83 and the second one-way valve 84, the booster pipeline 82 communicate with the water inlet pipeline of the water inlet joint 4.

In this implementation, a controller 13 is also provided in the control box 20, a control panel 201 communicating with the controller 13 is provided on the control box 20, and a "power switch" and "power lamp" are provided on the control panel 201. , "drainage", "interruption", "pressure maintaining light", "start" and other function buttons and display lights, the water inlet pipe of the water inlet joint 4 is equipped with a pressure sensor 10, and the signal input terminal of the controller 13 is connected to the The pressure sensor 10 is connected in communication, and the signal output terminal of the controller 13 is connected in communication with the booster water pump 83 , the first electromagnetic valve 72 and the slowly closing valve 9 .

Preferably, the water inlet pipe of the water inlet joint 4 is further provided with a first tee 15, and the water injection system 7, the pressurization system 8 and the water inlet joint 4 are respectively connected to corresponding interfaces.

Preferably, the water injection pipeline 71 of the water injection system 7 is provided with a second tee 14, the water inlet pipeline of the water storage tank 81 communicates with the second tee 14, and the inlet of the water storage tank 81 located in the water storage tank 81 A ball float valve 85 is installed on the water pipeline, and when the water level in the water storage tank 81 reached a set value, the ball float valve 85 was closed and stopped adding water to the water storage tank 81.

Preferably, a pressure gauge 18 for displaying the pressure in the flow path of the heat collector is also installed on the water outlet pipeline of the water outlet joint 5, the pressure in the flow path of the heat collector can be observed through the pressure gauge 18, and the pressure in the flow path of the heat collector can also be displayed in the control box 20. A display is arranged on the top, and the signal detected by the pressure sensor 10 is output to the display for display through the controller 13, and the pressure in the flow channel of the heat collector can also be observed.

The outlet pipeline of the water outlet joint 5 is also equipped with a monitoring device 51 for judging whether the outlet pipeline is full of water flowing out of the pipe. The monitoring device 51 is connected to the signal input end of the controller 13 by communication. What is used is a flow detection device. When the flow detection device detects that the water outlet pipeline reaches the maximum flow rate, it transmits the signal to the controller 13, and then the controller 13 outputs a control signal to slowly close the slowly closing valve 9. Of course, the monitoring device 51 can also be replaced by other devices that can determine whether the water outlet pipeline is full of water flow, such as a time relay. The time relay is connected to the valve 9 that can be slowly closed. Minimum time. When using a time relay, the time parameter of the time relay should be set to be greater than or equal to the minimum time. Of course, the time relay can also be used to simultaneously set the closing time of the slowly closing valve 9 and the required pressure holding time , when the water injection time reaches the time set by the time relay, the water outlet pipeline will flow out with full water, and the time relay will send out a signal, and the valve 9 that can be closed slowly will be closed to enter the pressurization stage; the pressure holding stage will reach the time set by the time relay After a certain pressure holding time, the time relay controls the valve 9 which can be slowly closed to open for pressure relief.

The bottom of water storage tank 81 is also equipped with blowdown device 19, and this blowdown device 19 is by the blowdown pipe 191 that is communicated with water storage tank 81, the second electromagnetic valve 192 that is installed on the blowdown pipe 191 forms, and the second solenoid valve 192 Communicatively connected with the controller 13.

Further, the bracket is also provided with a control hand valve 6 for controlling the first drive device 2 and the second drive device 3, and the first drive device 2 and the second drive device are controlled by the control hand valve 6, and the first drive device 2 and the second drive device are controlled. The driving device 2 and the second driving device 3 can also be automatically controlled by the controller 13 .

When using the above-mentioned vertical automatic pressure test machine for the collector flow channel to test the pressure of the collector flow channel, it includes five stages: water injection, pressurization, pressure maintenance, interruption, and pressure relief. When starting to work, manually pass the control hand valve 6 Make the two cylinders drive the first sealing joint 22 and the second sealing joint 23 to lift up, manually put the flow channel of the collector into the pressure test area, and align the lower port of the collector pipe with the water inlet joint 4 and the second sealing joint respectively. The upper port of the second sealing joint 23 is aligned with the first sealing joint 22 and the water outlet joint 5 respectively, and then the two cylinders are controlled by the control hand valve 6 to lower the first sealing joint 22 and the water outlet joint 5 to compress the header to confirm that there is no deflection Finally, plug in the power supply, press the "power switch", and the "power light" on the control panel 201 will light up.

1. Water injection, press the "Start" button on the control panel 201, the controller 13 outputs a signal to start the booster water pump 83 and open the first solenoid valve 72, the booster system 8 and the water injection system 7 inject water into the collector flow channel at the same time , entering the water injection stage, when the flow detection device detects that the water outlet pipeline is full of water flowing out, the controller 13 outputs a signal to control the electric ball valve 9 to close, and the electric ball valve 9 closes at a slow speed to eliminate the water hammer phenomenon;

2. Supercharging, the controller 13 first outputs a signal to close the first electromagnetic valve 72, the water injection system 7 stops water injection, the supercharging system 8 continues to inject water into the collector flow channel, and enters the supercharging stage, and the set value is set by the controller 13. When the pressure sensor 10 detects that the pressure in the flow channel of the heat collector reaches the set pressure test pressure, the controller 13 outputs a signal to stop the booster water pump 83, and the booster system 8 stops pumping water to the collector. Water injection in the flow channel;

3. Pressure maintenance, set the required pressure maintenance time, and enter the pressure maintenance state. At this time, the "pressure maintenance light" on the control panel will light up. At the same time, you can check whether there is water leakage everywhere, and observe the heat collection through the pressure gauge 18. Check whether the pressure in the flow channel of the collector is reduced. If there is no water leakage in the flow channel of the collector, skip to the fifth step. If the flow channel of the collector leaks, proceed to the fourth step;

4. Interruption, press the "interrupt" button on the control panel 201, directly control the valve 9 that can be slowly closed through the output signal of the controller 13 to open for pressure relief, the pressure in the collector flow channel drops, and the collector flow channel is removed. channel, the collector flow channel is an unqualified collector flow channel;

5. Pressure relief. After the set pressure holding time is reached, the "pressure holding light" will automatically turn off, and the output signal of the controller 13 controls the valve 9 that can be closed slowly to open for pressure relief. The pressure in the flow channel of the collector drops. The heat collector flow channel, then the heat collector flow channel is a qualified heat collector flow channel.

After long-term use, there will be dirt and impurities in the water storage tank 81. You can press the "drainage" button on the control panel 201 to open the second solenoid valve 192 on the sewage pipe 191 through the controller 13 to discharge the sewage. Press this key, the "drainage" button rebounds, and the controller 13 controls the second electromagnetic valve 192 to close.

Embodiment two

Figure 3 shows a double-station heat collector flow channel vertical automatic pressure test machine. It only needs to install an additional set of test stations 21 on the support 1, and install an additional set of test stations 21 in the control box. The water injection system 7 and the pressurization system 8 connected in parallel to the water inlet pipeline of the test station 21, the water injection system 7 and the pressurization system 8 share a water storage tank 81 to save space, and the two sets of test stations 21 are equipped with independent detection The pressure gauge 18, the pressure sensor 10, and the monitoring device 51 on the outlet pipeline that can determine whether the water pipeline is full of water flowing out and the valve 9 that can be slowly closed can control the interaction between the two systems through the buttons on the control panel 201. Working independently, other structures are the same as those in Embodiment 1, and will not be repeated here.

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (7)

1. the vertical automatic pressure test device of heat collector runner, comprise support (1), be arranged on the control box (20) of support (1) side, it is characterized in that: described support (1) at least comprises test station (21), described test station (21) has the first drive unit (2) be installed on support (1), second drive unit (3), water supply connector (4), water out adapter (5), first sealing adaptor (22) and the second sealing adaptor (23), described water supply connector (4) or the first sealing adaptor (22) are in transmission connection with the first drive unit (2), described water out adapter (5) or the second sealing adaptor (23) are in transmission connection with the second drive unit (3), also comprise be installed in control box (20) and with the waterflood system (7) of the inlet pipeline parallel communication of this water supply connector (4) and pressure charging system (8) and with the outlet pipeline being installed in water out adapter (5) on can the valve (9) of slowly closing for what eliminate water hammer,

Described waterflood system (7) comprises the water injecting pipeline (71) be connected with inlet pipeline, be installed in the first solenoid valve (72) on water injecting pipeline (71) and the first retaining valve (73), water injecting pipeline (71) is connected with the inlet pipeline of water supply connector (4);

Described pressure charging system (8) comprises reserve tank (81), the pressure piping (82) be connected with reserve tank (81), be installed in the booster water pump (83) on pressure piping (82) and the second retaining valve (84), pressure piping (82) is connected with the inlet pipeline of water supply connector (4);

Also comprise a controller (13), be installed in the pressure transducer (10) on the inlet pipeline of described water supply connector (4), the signal input part of controller (13) is connected with pressure transducer (10) communication, the signal output part of controller (13) and described booster water pump (83), the first solenoid valve (72) and can valve (9) communication of slowly closing be connected.

2. the vertical automatic pressure test device of heat collector runner according to claim 1, it is characterized in that: the inlet pipeline of described water supply connector (4) is equiped with the first threeway (15), water supply connector (4), waterflood system (7) and pressure charging system (8) respectively corresponding interface upper with the first threeway (15) are connected.

3. the vertical automatic pressure test device of heat collector runner according to claim 1, it is characterized in that: described water injecting pipeline (71) is equiped with the second threeway (14), the inlet pipeline of reserve tank (81) is connected with this second threeway (14), and the inlet pipeline being positioned at the reserve tank (81) of reserve tank (81) is equiped with ball-cock assembly (85).

4. the vertical automatic pressure test device of heat collector runner according to claim 1, is characterized in that: the outlet pipeline of described water out adapter (5) is equiped with the tensimeter (18) for showing the pressure in heat collector runner.

5. the vertical automatic pressure test device of heat collector runner according to claim 1, it is characterized in that: the outlet pipeline of described water out adapter (5) is equiped with for monitoring the outlet pipeline supervising device (51) whether full packages flows out, this supervising device (51) is connected with the signal input part communication of controller (13).

6. the vertical automatic pressure test device of heat collector runner according to claim 1, it is characterized in that: the bottom of described reserve tank (81) is equiped with blowdown apparatus (19), this blowdown apparatus (19) is by the blow-off pipe (191) be connected with reserve tank (81), the second solenoid valve (192) be installed on blow-off pipe (191) is formed, and the second solenoid valve (192) is connected with controller (13) communication.

7. the vertical automatic pressure test device of heat collector runner according to claim 1, is characterized in that: the control hand valve (6) described support (1) being also provided with control first drive unit (2) and the second drive unit (3).