CN211504468U

CN211504468U - Detection apparatus for calorimeter

Info

Publication number: CN211504468U
Application number: CN201922347644.9U
Authority: CN
Inventors: 胡晓娜; 赵楠; 田阳; 徐茂臣
Original assignee: Hebi Quality Supervison Inspection And Test Center
Current assignee: Hebi Quality Supervison Inspection And Test Center
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-15
Anticipated expiration: 2029-12-24

Abstract

A detection device of a heat meter comprises a voltage stabilizing circuit, a power switch, a box body, an electromagnetic valve, a thermometer, a flow meter, a water pump and a rack; the heating device comprises a water tank, an electric heating pipe and a temperature switch, and the water tank and the water pump are arranged on the lower side in the box body; the temperature switch and the electric heating pipe are arranged at the water tank; one side of the water tank is provided with a water return pipe and a water outlet pipe; the water outlet pipe is connected with a water pump; the front end of the frame baffle is provided with a water tank, a water return pipe is connected with a water falling pipe of the water tank, a high-pressure heat pipe of a water pump is installed with a horizontal pipe, a connecting pipe is arranged below the other end of the horizontal pipe, an electromagnetic valve is arranged below the connecting pipe, and a heat meter is installed below the electromagnetic valve; the thermometer is arranged on the other end of the high-pressure heat pipe, and the flowmeter is connected between the two sections in the middle of the high-pressure heat pipe in series; the voltage stabilizing circuit, the power switch, the control circuit and the prompting circuit are arranged in the element box and connected through wires. The novel device has the advantages of small volume, low cost, simple structure and convenient use.

Description

Detection apparatus for calorimeter

Technical Field

The utility model relates to a check out test set field, especially a detection device of calorimeter.

Background

The calorimeter is used as a metering device of heating equipment such as a household and the like, is mainly divided into a mechanical type and an electronic type, and is mainly used for metering the temperature, real-time flow and accumulated flow of heating fluid. The problems of inaccurate metering and the like can occur after the heat meter is used for a long time due to the reasons of electrical performance, aging, abrasion and the like of mechanical parts. Therefore, in order to guarantee the benefits of users and the benefits of heat supply departments (the heat meter with more use and less use brings loss to the heat supply management department, and the heat meter with less use and more use brings loss to the users), both the users and the heat supply management department have the requirement of correcting the heat meter.

In the correction of the existing heat meter, a management department or a user generally takes down the heat meter and then carries out corresponding detection on the heat meter to a related detection department, and the existing detection equipment has the defects of large volume (high cost and complex structure, and generally comprises a detection system, a heat supply test system, a display system based on a PC (personal computer) and the like), so that the detection department cannot bring the heat meter to the site to carry out door-to-door service detection on residents, and certain inconvenience is brought to the user; the heat meter which is installed for the first time in a new residential district and the like also needs to be corrected in order to ensure accurate metering in subsequent use, and similarly, the heat meter needs to be taken to a detection department by a management department personnel or a user to be detected, so that inconvenience is brought to the user. Based on the above, the device which has the advantages of small volume, low cost, convenience in use and simple structure and can be conveniently brought to the site for heat meter detection is particularly necessary.

SUMMERY OF THE UTILITY MODEL

In order to overcome current calorimeter check out test set bulky, with high costs, use inconvenience, the structure is complicated, can not take the scene to carry out the calorimeter and detect, can bring inconvenient drawback for the user, the utility model provides a small, with low costs, simple structure, convenient to use can conveniently take the scene to detect through various on-vehicle modes, can carry out most main temperature measurement, real-time flow detection to a plurality of calorimeter simultaneously in the detection, can obtain the key measurement data of calorimeter very fast to the detection device of a calorimeter has brought convenience for the user.

The utility model provides a technical scheme that its technical problem adopted is:

a detection device of a heat meter comprises a voltage stabilizing circuit, a power switch, a box body, an electromagnetic valve, a thermometer, a flow meter, a water pump and a rack, wherein universal wheels are arranged at the lower end of the rack; the device is characterized by also comprising a heating device, a control circuit and a prompt circuit, wherein the box body is arranged at the front upper end below the support plate of the rack, and the upper end of the box body is provided with a movable cover; the heating equipment comprises a water tank, an electric heating pipe and a temperature switch, wherein the water tank is arranged on one side of the lower part in the box body, and the water pump is arranged on the other side of the lower part in the box body; a water feeding pipe is arranged on one side of the upper end of the water tank, a movable cover is arranged on the upper end of the water feeding pipe, an exhaust pipe is arranged on the other side of the upper end of the water tank, an upper opening is formed in the upper end of the water tank, a temperature switch is fixedly installed in the opening, and the lower portion of a detection head of the temperature switch is located at the lower portion in the water; the electric heating pipe is arranged at the lower end in the water tank; the upper end and the lower end of one side of the water tank are respectively provided with a water return pipe and a water outlet pipe; the other end of the water outlet pipe is connected with the water inlet end of the water pump; a water tank is transversely arranged at the front end of the middle part of the rear side baffle of the rack, the other end of the water return pipe is fixedly connected with a downpipe at one side of the lower end of the water tank, and a high-pressure heat pipe is arranged at the water outlet end of the water pump; the other end of the high-pressure heat pipe is transversely arranged in front of the baffle, the other end of the high-pressure heat pipe is arranged with the transverse pipe, and the inside of the high-pressure heat pipe is communicated with the inside of the transverse pipe; the lower part of the other end of the transverse pipe is provided with a plurality of connecting pipes at intervals from left to right, the lower parts of the plurality of connecting pipes are respectively provided with a plurality of electromagnetic valves, and one of the heat meters to be tested is arranged below the electromagnetic valve of one of the transverse pipes; the manual water valve is arranged at the lower end of the other side of the water tank, the upper pipe is arranged at the other end of the high-pressure heat pipe, the thermometer is arranged on the upper pipe, and the liquid inlet pipe and the liquid outlet pipe of the flowmeter are connected in series between the two sections of the middle part at the other end of the high-pressure heat pipe; the voltage stabilizing circuit, the power switch, the control circuit and the prompting circuit are arranged in the element box; the power output end of the voltage stabilizing circuit and the power input end of the prompting circuit are connected through leads respectively, the negative power output end of the voltage stabilizing circuit and the negative power input end of the control circuit are connected through leads, the positive power output end of the voltage stabilizing circuit and one ends of the power inputs of the power switches and the temperature switch are connected through leads, the other ends of the power switches, the negative power output end of the voltage stabilizing circuit and the positive and negative power input ends of the electromagnetic valves are connected through leads respectively, one pole of the 220V alternating current power supply is connected with the control power input end of the control circuit through a lead, the control power output end of the control circuit, the other pole of the 220V alternating current power supply and two ends of the power input of the electric heating pipe are connected through leads respectively, and the other end of.

Furthermore, the voltage stabilizing circuit is an AC-to-DC switching power supply module.

Further, the electromagnetic valve is a normally closed valve core electromagnetic water valve.

Further, the control circuit is a relay.

Further, the temperature switch is a hydraulic expansion type adjustable temperature switch.

The prompting circuit comprises a relay, a resistor, an NPN triode, a water level probe and a buzzer, wherein the relay, the resistor, the NPN triode, the water level probe and the buzzer are connected through a conducting wire, the positive power input end and the control power input end of the relay are connected with one end of one of the water level probes, the normally closed contact end of the relay is connected with the positive power input end of the sounder, one end of the resistor is connected with the base electrode of the NPN triode, the collector electrode of the NPN triode is connected with the negative power input end of the relay, the emitting electrode of the NPN triode is connected with the.

Furthermore, the two water level probes of the prompting circuit are two metal rods.

The utility model has the advantages that: this novel can be put the water in the water tank before the scene is whole, owing to have the universal wheel and can make things convenient for the shift position, and can conveniently take the scene through various on-vehicle modes (including the storage battery car) and detect, can carry out most main temperature measurement, real-time flow detection to a plurality of calorimeter simultaneously. The water in the water tank is heated by the electric heating pipe during detection, the temperature is kept constant through the temperature switch, when the water is pumped out by the water pump and pressurized, the water flows out of the two checking thermometers and the flow meter respectively through the tested heat meter by the electromagnetic valves opened by the electric working valve cores, so that a tester compares the temperature and flow number displayed by the two checking thermometers and the flow meter with the temperature and flow number displayed by the tested heat meter, and if the number is close to represent that the metering of the heat meter is correct, otherwise, the water is abnormal. This is novel through two check-up thermometers, flow meter as the check-up benchmark, has prevented to only use one check-up thermometer, flow meter, brings the influence to the test of calorimeter after taking place to measure inaccurate. This novel waste water can return the flow back to the water tank through the basin after the test, and hydroenergy obtains cyclic utilization. The novel calorimeter temperature measuring device is small in size, low in cost, simple in structure and convenient to use, can obtain key measuring data of calorimeter temperature measurement and real-time flow quickly, and brings convenience to users. Based on the above, this is novel has good application prospect.

Drawings

The invention is further explained below with reference to the figures and examples.

Fig. 1 is a schematic diagram of the novel structure.

Fig. 2 is a circuit diagram of the present invention.

Detailed Description

As shown in fig. 1, a detection device for a calorimeter comprises a voltage stabilizing circuit 1, a power switch 2, a box 4 (metal), an electromagnetic valve 5, a thermometer 6, a flowmeter 7, a water pump 8, a rack 9 (metal), and universal wheels 93 are respectively installed on the periphery of the lower end of the ' l ' -shaped ' rack 9 (comprising a rectangular support plate 91 and a baffle 92) through screw nuts; the heating device is also provided with a heating device 10, a control circuit 11 and a prompt circuit 12, the box body 4 is transversely arranged at the upper end of a rectangular support plate 91 of the frame through a screw nut, two hinges 41 are welded on the rear side of the upper end of the box body 4, and the front ends of the hinges 41 are welded on the upper end of the rear side of a movable cover 42 matched with the box body; the heating device 10 comprises a rectangular water tank 101 (metal), an electric heating pipe 102 and a temperature switch 103, the periphery of the lower end of the water tank 101 is arranged on the lower left side in the box body 4 through screw nuts, and the lower end of a shell of the water pump 8 is arranged on the lower right side in the box body 4 through screw nuts; the left side of the upper end of the water tank 101 is welded with a water feeding pipe 106, the upper end of the water feeding pipe 106 is provided with a movable cover 107, the right side of the upper end of the water tank 101 is welded with an exhaust pipe 104, the middle part of the upper end of the water tank 101 is provided with an upper opening, the upper end of the upper opening is welded with a rectangular supporting upper plate 105 with an opening in the middle part, a temperature switch 103 is fixed at the upper end of the supporting upper plate 105 by two nuts through external threads at the lower end of a fixing shell of the temperature switch 103 (the middle part of the fixing shell is positioned in the opening in the middle part of the supporting upper plate 105), an adjusting disc of the temperature switch 103 is positioned at the upper end, the lower part of a temperature detecting head 103-1 of the; the annular electric heating pipe 102 is arranged at the inner lower end of the water tank 101, the rear parts of the front ends of two wiring screw rods 3 of the electric heating pipe 102 are respectively sleeved with a ceramic gasket, the middle parts of the two wiring screw rods 3 are respectively sleeved with a ceramic pipe, the two wiring screw rods 3 and the ceramic pipes are respectively led out outwards through two openings at the front lower part of the water tank 101, the other two ceramic gaskets are respectively sleeved on the outer sides of the two wiring screw rods 3, the electric heating pipe 102 is fixedly arranged at the inner lower end of the water tank 101 by respectively screwing two nuts into external threads at the front outer side ends of the two wiring screw rods 3, the front ends of the two wiring screw rods 3 (insulated from the tank body) and the front inner side of the tank body 101 are separated by a certain; a water return pipe 13 and a water outlet pipe 14 which are communicated with the inner space of the water tank 101 are respectively welded on the right rear upper side and the right lower front side of the water tank 101; the other end of the water outlet pipe 13 is fixedly connected with the water inlet end of the water pump 8 through a pipeline and a pipeline joint; a rectangular water tank 15 (metal) is transversely welded at the front end of the middle part of a rear side baffle 92 of the rack, the other end of a water return pipe 13 is welded with a water falling pipe on the right side of the lower end of the water tank 15 (the water falling pipe is communicated with the water tank 15), a high-pressure heat pipe 16 is installed at the water outlet end of the water pump 8 through a pipeline and a pipeline joint, and the other end of the high-pressure heat pipe 16 and the other end of the water return pipe 13 are respectively led out from two openings at the rear upper; the outer side of the upper part of the other end of the high-pressure heat pipe 16 is transversely welded at the front upper end of the baffle plate 92, the other end of the high-pressure heat pipe 92 is welded with a middle hole at the upper end of the transverse pipe 17 transversely welded at the front middle part of the baffle plate, and the inside of the high-pressure heat pipe 16 is communicated with the inside of the transverse pipe 17; fourteen connecting pipes 171 communicated with the inside of the other end of the transverse pipe are welded on the lower part of the other end of the transverse pipe 17 at certain intervals from left to right, fourteen electromagnetic valves 5 are respectively installed on the lower parts of the fourteen connecting pipes 171 through threaded connection, and a liquid inlet pipe of one or more heat meters 18 to be tested is screwed into internal threads of a liquid outlet end of one or more electromagnetic valves 5 through external threads so as to be installed below the one or more electromagnetic valves 5 of the transverse pipe; a manual water valve 151 is installed at the left lower end of the water tank 15, two upper pipes 172 which are welded with the high-pressure heat pipe 16 and are communicated with the inner space of the high-pressure heat pipe 16 are arranged in the upper middle part of the other end of the high-pressure heat pipe 16 from left to right, an air inlet pipe and two upper pipes at the lower part of the two thermometers 6 are respectively connected together through a pipeline and a pipeline joint, the middle part of the other end of the high-pressure heat pipe 16 is divided into two sections, a liquid inlet pipe and a liquid outlet pipe of the two flow meters 7 are respectively connected in series between the two sections in the middle part of the other end of the high-pressure heat pipe 16 through the pipeline; the voltage stabilizing circuit 1, the power switch 2, the control circuit 11 and the prompting circuit 12 are installed on a circuit board, the circuit board is installed in the element box 19, and the rear side end of the element box 19 is installed at the left upper end of the rear side of the baffle 92 through a screw nut. The two water level probes 121 of the prompting circuit are two copper screws, the two copper screws 121 are installed at two openings in the front middle of the water tank 101, the left and right sides of the two copper screws are spaced by 0.5cm, rubber sleeves are respectively sleeved at the middle parts of the two copper screws 121 and are respectively located in two openings in the front middle of the water tank 101, when one copper screw 121 is fixed by every two nuts, one rubber gasket is respectively arranged at the inner side end and the outer side end of each copper screw 121 located in each opening, and the two copper screws 121 are insulated from the water tank 101 on the premise that the two copper screws 121 are fixed. The thermometer 6 is a bimetallic thermometer of Manlun brand, model number is WSS-411, and the flowmeter 7 is a vortex shedding flowmeter finished product produced by Shanghai automated meters Limited.

As shown in FIG. 2, the voltage stabilizing circuit A is a finished product of a brand bright weft AC 220V-to-12V DC switching power supply module with the power of 200W. The power switch SN is a button self-locking power switch, and a plurality of buttons of the power switch SN are positioned outside the opening hole at the front end of the element box. The electromagnetic valve DCN is a normally closed valve core electromagnetic water valve with working voltage of direct current of 12V and power of 2W. The water pump M is a 150W horizontal water pump with working voltage of 220V alternating current and is respectively connected with two poles of a 220V alternating current power supply through a power switch S, and an operating handle of the power switch S is positioned outside an opening at the front lower end of the element box. The control circuit is a relay K1. The temperature switch W is a finished product of a liquid expansion type adjustable temperature switch, the brand is bright, and the temperature adjusting range is 30-110 ℃. The prompting circuit comprises a relay K, a resistor R, NPN triode Q1, a water level probe T and a buzzer B, wherein the relay K, the resistor R, NPN triode Q1, the water level probe T and the buzzer B are connected through a conducting wire, the positive power input end and the control power input end of the relay K are connected with one end of one water level probe T, the normally closed contact end of the relay K is connected with the positive power input end of the buzzer B, one end of a resistor R is connected with the base electrode of an NPN triode Q1, the collector electrode of the NPN triode Q1 is connected with the negative power input end of the relay K, the emitting electrode of the NPN triode Q1 is connected with the. The two ends 1 and 2 of the power input of the 220V alternating current power supply and the voltage stabilizing circuit A are respectively connected through leads, the power output ends 3 and 4 of the voltage stabilizing circuit A and the emitter of the prompting circuit power input two ends relay K positive power supply input end and the NPN triode Q1 are respectively connected through leads, the negative power output end 4 of the voltage stabilizing circuit A and the negative power input end of the control circuit negative power supply input end relay K1 are connected through leads, the positive power output end 3 of the voltage stabilizing circuit A and the power input ends of the fourteen power switches SN and the temperature switch W are connected through leads, the other ends of the fourteen power switches SN, the negative power output end 4 of the voltage stabilizing circuit A and the positive and negative pole power input ends of the fourteen electromagnetic water valves DCN are respectively connected through leads, one pole of the 220V alternating current power supply and the control power input end of the relay K, the normally open contact end of a control power output end relay K1 of the control circuit, the other pole of the 220V alternating current power supply and the two ends of the power input end of the electric heating tube RT are respectively connected through leads, and the other end of the temperature switch W is connected with the positive power input end of a control power input end relay K1 of the control circuit through leads.

As shown in figures 1 and 2, the novel water tank can completely discharge water in the water tank 101 before arriving at the site, and can conveniently move the position due to the universal wheels, and can be conveniently brought to the site to be detected through various vehicle-mounted modes. When water is drained, the power switch S, the water valve 151 and the water pump M are turned on to work, then water in the water tank 101 is pumped out, and then the water is drained outside through the water tank 15 and the water valve 151 (the water can be collected by a bucket and the like and then poured), and the purpose of draining water is achieved after the water in the water tank 101 is completely pumped out. After the water tank arrives at the site, a tester opens the upper cover 42 of the tank body, then opens the movable cover 107 of the water adding pipe 106 at the upper end of the water tank 101, adds water into the water tank 101 through the water adding pipe 106, the water amount is about four fifths of the water in the water tank 101, and covers the movable cover 107 after the water is added. Then, a tester installs one or more heat meters 18 to be measured at the lower end of one or more electromagnetic valves 5, then a power plug of a voltage stabilizing power supply A is inserted into a mains supply socket, then a 220V alternating current power supply enters pins 1 and 2 of the voltage stabilizing power supply A, pins 3 and 4 of the voltage stabilizing power supply A can output a stable 12V direct current power supply under the action of an internal circuit of the voltage stabilizing power supply A and enter a control circuit and a prompt circuit, and a positive pole of the 12V direct current power supply output by the pin 3 of the voltage stabilizing power supply A enters one end of fourteen power switches SN and one end of a temperature switch W, so that the control circuit, the prompt circuit, one end of the fourteen power switches SN and one end of the temperature switch W are in an electrified working. The tester adjusts an adjusting knob of a temperature switch W according to the requirement of test temperature to enable the adjusting knob to be aligned with the required temperature number (such as 80 ℃), when the water temperature is lower than 80 ℃, the positive electrode of a power supply output by a pin 3 of a stabilized voltage power supply A enters the positive power input end of a relay K1 (the negative power input end is communicated with a pin 4 of the stabilized voltage power supply A) through two closed contacts in the temperature switch W, then, a relay K1 is electrified to attract the control power input end and a normally open contact end to be closed, thus, one pole of a 220V alternating current power supply controls the power input end and the normally open contact end to enter one end of an RT power supply of an electric heating pipe through the relay K1, the other pole of the 220V alternating current power supply enters the other end of the RT power supply of the; when the water temperature is higher than 80 ℃, two contacts in the temperature switch W are opened, the positive electrode of the power supply output by the 3 pin of the stabilized voltage power supply A does not enter the positive electrode power supply input end of the relay K1 through the contact in the temperature switch W, then, the relay K1 loses power and does not attract the control power supply input end and the normally open contact end to open, thus, the electric heating pipe RT can lose power and does not heat water in the water tank 101 any more, when the water temperature is lower than 80 ℃ again, the electric heating pipe RT is electrified to generate heat again to heat water, the water temperature in the water tank 101 can be effectively kept in a constant temperature state in use through the above, a foundation is laid for subsequent tests (the subsequent temperature number and the thermometer comparison can also pass through the temperature switch W. The electric heating tube RT heats the water, and the air pressure in the water tank 101 is discharged through the exhaust pipe 104 (and through the opening 43 at the right end of the upper cover of the box body 4). After a tester turns on the power switch S, the 220V alternating-current power supply enters the power input end of the water pump M, so that the water pump M works to pump out the heated water in the water tank 101 through the water outlet pipe 14, and flows out through the water inlet end and the water outlet end of the two flow meters 7 and then enters the transverse pipe 17 (the two flow meters 7 simultaneously display the water flow, at the moment, the hot water also enters the liquid inlet ends of the two thermometers 6, and the two thermometers 6 display the temperature). When an operator needs to test the heat meter 18 connected with the first connecting pipe 171, the operator presses the button of the first power switch SN, so that the hot water in the transverse pipe 17 flows out of the valve core opened by the first electromagnetic water valve DCN, the liquid inlet end and the liquid outlet end of the tested first heat meter 18 and enters the water tank 15 (meanwhile, the first heat meter 18 displays the temperature and the flow of the flowing-in and flowing-out hot water under the function of the first heat meter 18); when an operator needs to test the heat meter 18 connected with the second connecting pipe 171, the first power switch SN is turned off first, and then the button of the second power switch SN is pressed, so that the hot water in the transverse pipe 17 flows out of the valve core opened by the second electromagnetic water valve DCN, the liquid inlet end and the liquid outlet end of the tested second heat meter 18 and enters the water tank 15 (meanwhile, the second heat meter displays the temperature and the flow of the flowing-in and flowing-out hot water under the function of the second heat meter); like the operation method, the novel calorimeter can respectively operate fourteen power switches SN at intervals, and fourteen calorimeters 18 can be measured at most once. During measurement, a tester compares the temperature and flow numbers displayed by the two temperature checking meters 6 and the flow meter 7 with the temperature and flow numbers displayed by the tested heat meter 18, if the numbers are close, the metering is correct by the tested heat meter 18, otherwise, the metering is abnormal. This is novel through two check-up thermometers 6, flow meter 7 as the check-up benchmark, has prevented to only use one check-up thermometers 6, flow meter 7, takes place to measure inaccurate back when one check-up thermometers 6, flow meter 7, brings the influence to calorimeter 18's test (just need maintain or change when two check-up thermometers 6, the number that flow meter 7 shows is not unified). This novel waste water after test can return to the water tank 101 in through basin 15, wet return 13, hydroenergy obtains cyclic utilization.

As shown in figure 2, when the water in the water tank exceeds half, the water submerges the two water level probes T, the resistance value between the two water level probes T is reduced, at the moment, the base electrode of the NPN triode Q1 obtains proper forward bias conduction (higher than 0.7V) from the pin 3 of the switching power supply A through the second water level probe T, the water and the first water level probe T, the collector electrode of the NPN triode Q1 outputs low level to enter the negative power input end of the relay K, then the relay K is electrified to attract the control power input end and the normally closed contact end of the relay K to be open, and the buzzer B does not sound when the water in the water tank 101 is enough. When the water in the water tank is reduced to below half, the water does not submerge the two water level probes T any more, the resistance value between the two water level probes T is infinite, at the moment, the base electrode of the NPN triode Q1 is in a cut-off state without proper forward bias, the collector electrode of the NPN triode Q1 does not output low level to enter the input end of the negative power supply of the relay K, then the relay K is not electrified and is not attracted any more, the input end of the control power supply of the relay K is communicated with the normally closed contact end, and because the input end of the positive power supply of the buzzer B is connected with the normally closed contact end of the relay K, the buzzer B can sound to prompt a tester that water needs to. The relay K, K1 is a DC4123 type 12V relay. The resistance R is 30K. The electric heating tube power is 1.5KW (220V). The sounder B is an active continuous audible alarm finished product of a wing union brand. This novel small, with low costs, simple structure, convenient to use can conveniently take the scene to detect through various on-vehicle modes, can carry out leading temperature measurement, real-time flow detection to a plurality of calorimeter simultaneously in the detection, can obtain the key measurement data of calorimeter very fast to convenience has been brought for the user.

The essential features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A detection device of a heat meter comprises a voltage stabilizing circuit, a power switch, a box body, an electromagnetic valve, a thermometer, a flow meter, a water pump and a rack, wherein universal wheels are arranged at the lower end of the rack; the device is characterized by also comprising a heating device, a control circuit and a prompt circuit, wherein the box body is arranged at the front upper end below the support plate of the rack, and the upper end of the box body is provided with a movable cover; the heating equipment comprises a water tank, an electric heating pipe and a temperature switch, wherein the water tank is arranged on one side of the lower part in the box body, and the water pump is arranged on the other side of the lower part in the box body; a water feeding pipe is arranged on one side of the upper end of the water tank, a movable cover is arranged on the upper end of the water feeding pipe, an exhaust pipe is arranged on the other side of the upper end of the water tank, an upper opening is formed in the upper end of the water tank, a temperature switch is fixedly installed in the opening, and the lower portion of a detection head of the temperature switch is located at the lower portion in the water; the electric heating pipe is arranged at the lower end in the water tank; the upper end and the lower end of one side of the water tank are respectively provided with a water return pipe and a water outlet pipe; the other end of the water outlet pipe is connected with the water inlet end of the water pump; a water tank is transversely arranged at the front end of the middle part of the rear side baffle of the rack, the other end of the water return pipe is fixedly connected with a downpipe at one side of the lower end of the water tank, and a high-pressure heat pipe is arranged at the water outlet end of the water pump; the other end of the high-pressure heat pipe is transversely arranged in front of the baffle, the other end of the high-pressure heat pipe is arranged with the transverse pipe, and the inside of the high-pressure heat pipe is communicated with the inside of the transverse pipe; the lower part of the other end of the transverse pipe is provided with a plurality of connecting pipes at intervals from left to right, the lower parts of the plurality of connecting pipes are respectively provided with a plurality of electromagnetic valves, and one of the heat meters to be tested is arranged below the electromagnetic valve of one of the transverse pipes; the manual water valve is arranged at the lower end of the other side of the water tank, the upper pipe is arranged at the other end of the high-pressure heat pipe, the thermometer is arranged on the upper pipe, and the liquid inlet pipe and the liquid outlet pipe of the flowmeter are connected in series between the two sections of the middle part at the other end of the high-pressure heat pipe; the voltage stabilizing circuit, the power switch, the control circuit and the prompting circuit are arranged in the element box; the power output end of the voltage stabilizing circuit and the power input end of the prompting circuit are connected through leads respectively, the negative power output end of the voltage stabilizing circuit and the negative power input end of the control circuit are connected through leads, the positive power output end of the voltage stabilizing circuit and one ends of the power inputs of the power switches and the temperature switch are connected through leads, the other ends of the power switches, the negative power output end of the voltage stabilizing circuit and the positive and negative power input ends of the electromagnetic valves are connected through leads respectively, one pole of the 220V alternating current power supply is connected with the control power input end of the control circuit through a lead, the control power output end of the control circuit, the other pole of the 220V alternating current power supply and two ends of the power input of the electric heating pipe are connected through leads respectively, and the other end of.

2. The detection device of the heat meter according to claim 1, wherein the voltage stabilizing circuit is an AC-to-DC switching power supply module.

3. The detection device of the heat meter according to claim 1, wherein the electromagnetic valve is a normally closed valve core electromagnetic water valve.

4. The heat meter testing device according to claim 1, wherein the temperature switch is a hydraulically-expandable temperature-adjustable switch.

5. The heat meter detection device according to claim 1, wherein the prompting circuit comprises a relay, a resistor, an NPN triode, a water level probe and a buzzer, the relay, the resistor, the NPN triode, the water level probe and the buzzer are connected through a lead, a positive power input end of the relay and a control power input end of the relay are connected with one end of one of the water level probes, a normally closed contact end of the relay is connected with a positive power input end of the buzzer, one end of the resistor is connected with a base of the NPN triode, a collector of the NPN triode is connected with a negative power input end of the relay, an emitter of the NPN triode is connected with a negative power input end of.

6. The detection device of the heat meter as claimed in claim 5, wherein the two water level probes of the prompting circuit are two metal rods.