CN208537172U - Cooling thermal impact thermostat - Google Patents

Abstract

The utility model provides a kind of cooling thermal impact thermostat, including engine, further includes hot-water cylinder, expansion tank and plate heat exchanger；The engine both ends are respectively equipped with water inlet pipe and outlet pipe, the water inlet pipe is equipped with variable frequency pump, constant-temperature effluent temperature sensor and constant-temperature effluent pressure sensor, the outlet pipe are equipped with engine outlet water temperature sensor, are connected with small circulating pipe between the water inlet pipe and outlet pipe；Hot-water cylinder temperature sensor is equipped in the hot-water cylinder, the outlet end of hot-water cylinder and input end pass through connecting tube respectively and connect with water inlet pipe and outlet pipe；The outlet end of the plate heat exchanger and input end pass through connecting tube respectively and connect with water inlet pipe and outlet pipe.Cooling thermal impact thermostat described in the utility model the needs of guaranteeing the effect of impact, meet specific cycle and reach maximum warm variability, when without cooling thermal impact, can also be used as a common thermostat job using the double pitcher configurations of special connection.

Description

Cooling thermal impact thermostat

Technical field

The utility model belongs to cold shock testing technical field, more particularly, to a kind of cooling thermal impact thermostat.

Background technique

Cold shock testing is used for test material structure or composite material, continuous through very high temperature and extremely low temperature under moment Lower patient degree of environment is able to detect sample in the shortest time because of the chemical change or physics caused by expanding with heat and contract with cold Injury.Cold shock testing is the important ring in engine reliability test, it is acute by the circulation of engine operating temperatures Strong variation carrys out the reliability that test engine bears alternation mechanical load and limit thermic load, detects cylinder within a short period of time The thermal expansion of the kernel components such as lid, cylinder block and contractility, and Part Thermal Deformation is evaluated to the shadow of engine overall performance It rings.

Engine Block Test cold shock testing device currently on the market is more, but price is costly, and can Customization is poor, cannot arbitrarily change it and control program to adapt to different test loops, is not able to satisfy high temperature variability, multisection type impact And the requirement of variable intake pressure, these have seriously affected the accuracy of engine cooling thermal impact performance test and test effect Rate.

Utility model content

In view of this, the utility model is directed to cooling thermal impact thermostat, to improve engine cooling thermal impact performance The accuracy and testing efficiency of test.

In order to achieve the above objectives, the technical solution of the utility model is achieved in that

A kind of cooling thermal impact thermostat, including engine further include hot-water cylinder, expansion tank and plate heat exchanger；Institute It states engine both ends and is respectively equipped with water inlet pipe and outlet pipe, the water inlet pipe is equipped with variable frequency pump, constant-temperature effluent temperature sensing Device and constant-temperature effluent pressure sensor, the outlet pipe are equipped with engine outlet water temperature sensor, the water inlet pipe and water outlet Small circulating pipe is connected between pipe, the small circulating pipe is equipped with partial circulating control valve；Hot water tank temperature is equipped in the hot-water cylinder Sensor is spent, the outlet end of hot-water cylinder and input end pass through connecting tube respectively and connect with water inlet pipe and outlet pipe, and hot-water cylinder Outlet end is equipped with hot-water cylinder outlet valve, and described expansion tank one end connects water supply pipe, and the other end is connect with hot-water cylinder, is hot-water cylinder Moisturizing；The outlet end of the plate heat exchanger and input end pass through connecting tube respectively and connect with water inlet pipe and outlet pipe, and board-like The outlet end of heat exchanger is equipped with cold water tank outlet valve.

Further, heating component is equipped in the hot-water cylinder.

Further, supplementing water pressure sensor is equipped in the expansion tank, expansion tank upper end is equipped with pressure limiting valve.

Further, the variable frequency pump be 3Kw pipeline pump, maximum stream flow be 25 cubic metres per hour, pump discharge pressure Power is 10-160kp.

Further, the small circulating pipe, hot-water cylinder and plate heat exchanger are connected between water inlet pipe and outlet pipe side by side, And successively become larger at a distance from engine.

Compared with the existing technology, cooling thermal impact thermostat described in the utility model has the advantage that

Cooling thermal impact thermostat described in the utility model, using the double pitcher configurations of special connection, cooling thermal impact temperature Variable Rate can reach 2.5 degrees Celsius of degree per seconds, can satisfy the test demand of multisection type impact, can also adjust temperature 20-90 degrees Celsius of any section is simultaneously impacted, and guarantees the effect of impact, is met specific cycle and is reached maximum warm variability Demand can also be used as a common thermostat job when without cooling thermal impact；Meanwhile selecting big flow frequency conversion Water pump meets the needs of different clients are to intake pressure and flow.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.? In attached drawing:

Fig. 1 is the structural schematic diagram according to a preferred embodiment of the cooling thermal impact thermostat of the utility model.

Description of symbols:

1- engine；101- water inlet pipe；102- outlet pipe；103- small circulating pipe；2- variable frequency pump；3- plate heat exchanger； 4- hot-water cylinder；5- expansion tank；6- supplementing water pressure sensor；7- pressure limiting valve；8- water supply pipe；9- partial circulating control valve；10- hot water Tank outlet valve；11- cold water tank outlet valve；12- constant-temperature effluent temperature sensor；13- engine outlet water temperature sensor；14- heat Water tank temperature sensor；15- constant-temperature effluent pressure sensor；16- heating component.

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result, Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another It is described, the meaning of " plurality " is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition State the concrete meaning of term in the present invention.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

A kind of cooling thermal impact thermostat further includes hot-water cylinder 4,5 He of expansion tank as shown in Figure 1, including engine 1 Plate heat exchanger 3；1 both ends of engine are respectively equipped with water inlet pipe 101 and outlet pipe 102, and the water inlet pipe 101, which is equipped with, to be become Frequency water pump 2, constant-temperature effluent temperature sensor 12 and constant-temperature effluent pressure sensor 15, the outlet pipe 102 are equipped with engine Leaving water temperature sensors 13 are connected with small circulating pipe 103, the small circulating pipe between the water inlet pipe 101 and outlet pipe 102 103 are equipped with partial circulating control valve 9；Be equipped with hot-water cylinder temperature sensor 14 in the hot-water cylinder 4, the outlet end of hot-water cylinder 4 and Input end passes through connecting tube respectively and connect with water inlet pipe 101 and outlet pipe 102, and the outlet end of hot-water cylinder 4 goes out equipped with hot-water cylinder Water valve 10, described 5 one end of expansion tank connect water supply pipe 8, and the other end is connect with hot-water cylinder 4, are 4 moisturizing of hot-water cylinder；The plate The outlet end of formula heat exchanger 3 and input end pass through connecting tube respectively and connect with water inlet pipe 101 and outlet pipe 102, and plate-type heat-exchange The outlet end of device 3 is equipped with cold water tank outlet valve 11.

Heating component 16 is equipped in the hot-water cylinder 4.

Supplementing water pressure sensor 6 is equipped in the expansion tank 5,5 upper end of expansion tank is equipped with pressure limiting valve 7.

The variable frequency pump 2 be 3Kw pipeline pump, maximum stream flow be 25 cubic metres per hour, pump discharge pressure 10- 160kp。

The small circulating pipe 103, hot-water cylinder 4 and plate heat exchanger 3 be connected to side by side water inlet pipe 101 and outlet pipe 102 it Between, and successively become larger at a distance from engine 1.

The course of work of cooling thermal impact thermostat described in the utility model are as follows:

Thermal shock process is carried out first, and before starting, hot-water cylinder 4 is preheating to set temperature by heating component 16.Start to rush After hitting, hot-water cylinder outlet valve 10 is opened, closes cold water tank outlet valve 11 and partial circulating control valve 9, monitors the outlet pipe of engine 1 After engine outlet water temperature sensor 13 on 102 reaches certain value, partial circulating control valve 9 is opened, closes hot-water cylinder outlet valve 10, start partial circulating heating process；After reaching predetermined temperature, cold water tank outlet valve 11 is opened, by adjusting partial circulating control valve 9 Water temperature is controlled, if 9 standard-sized sheet water temperature of partial circulating control valve is still too low, water temperature is adjusted by switch cold water tank outlet valve 11；

Then cold shock process is carried out, cold water tank outlet valve 11 is opened, closes partial circulating control valve 9, at this point, reaching maximum The state of cooling is controlled whether heating component 16 works in hot-water cylinder 4 by temperature limit switch, stops heating when temperature reaches the upper limit, Continuous heating lower than this temperature, temperature is acquired by the hot-water cylinder temperature sensor 14 in hot-water cylinder 4, system with engine 1 into The inflow temperature of constant-temperature effluent temperature sensor on water pipe 101 uses variable frequency pump 2, max-flow as Master Node, pipeline pump Per hour, pump intake pressure 10-160kpa is adjustable for 25 cubic metres of amount.

Cooling thermal impact circulation carries out, and when the water in hot-water cylinder 4 is reduced, carries out adding water to hot-water cylinder by expansion tank 5.

Cooling thermal impact thermostat described in the utility model, using the double pitcher configurations of special connection, cooling thermal impact temperature Variable Rate can reach 2.5 degrees Celsius of degree per seconds, can satisfy the test demand of multisection type impact, can also adjust temperature 20-90 degrees Celsius of any section is simultaneously impacted, and guarantees the effect of impact, is met specific cycle and is reached maximum warm variability Demand can also be used as a common thermostat job when without cooling thermal impact.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (5)

1. a kind of cooling thermal impact thermostat, including engine (1), it is characterised in that: further include hot-water cylinder (4), expansion tank (5) and plate heat exchanger (3)；

Engine (1) both ends are respectively equipped with water inlet pipe (101) and outlet pipe (102), and the water inlet pipe (101), which is equipped with, to be become Frequency water pump (2), constant-temperature effluent temperature sensor (12) and constant-temperature effluent pressure sensor (15) are set on the outlet pipe (102) Have engine outlet water temperature sensor (13), is connected with small circulating pipe between the water inlet pipe (101) and outlet pipe (102) (103), the small circulating pipe (103) is equipped with partial circulating control valve (9)；

Hot-water cylinder temperature sensor (14) are equipped in the hot-water cylinder (4), the outlet end of hot-water cylinder (4) and input end pass through respectively Connecting tube is connect with water inlet pipe (101) and outlet pipe (102), and the outlet end of hot-water cylinder (4) is equipped with hot-water cylinder outlet valve (10), Described expansion tank (5) one end connects water supply pipe (8), and the other end is connect with hot-water cylinder (4), is hot-water cylinder (4) moisturizing；

The outlet end of the plate heat exchanger (3) and input end pass through connecting tube and water inlet pipe (101) and outlet pipe (102) respectively Connection, and the outlet end of plate heat exchanger (3) is equipped with cold water tank outlet valve (11).

2. cooling thermal impact thermostat according to claim 1, it is characterised in that: be equipped with heating in the hot-water cylinder (4) Component (16).

3. cooling thermal impact thermostat according to claim 1, it is characterised in that: be equipped with and mend in the expansion tank (5) Water pressure sensor (6), expansion tank (5) upper end are equipped with pressure limiting valve (7).

4. cooling thermal impact thermostat according to claim 1, it is characterised in that: the variable frequency pump (2) is the pipe of 3Kw Road pump, maximum stream flow be 25 cubic metres per hour, pump discharge pressure 10-160kp.

5. cooling thermal impact thermostat according to claim 1-4, it is characterised in that: the small circulating pipe (103), hot-water cylinder (4) and plate heat exchanger (3) are connected to side by side between water inlet pipe (101) and outlet pipe (102), and with start The distance of machine (1) successively becomes larger.