阅读说明：本技术 一种隔膜压缩机缸盖冷却结构 (cooling structure for cylinder cover of diaphragm compressor ) 是由 彭学院 任省栋 汪婷 贾晓晗 于 2019-09-11 设计创作，主要内容包括：本申请涉及一种隔膜压缩机缸盖冷却结构。传统打水道的方式多是从缸盖侧壁面向缸盖内部打孔,水道通过中心高温区的换热面积很小,无法及时将中心高温区域的大量热量带走,冷却效果不明显。本申请提供了一种隔膜压缩机缸盖冷却结构,包括缸盖,缸盖端面上设置有冷却水槽,冷却水槽设置于所述缸盖内部,缸盖上设置有排气组件,冷却水槽包围所述排气组件,冷却水槽与进水口组相贯通,冷却水槽与出水口组相贯通,进水口组设置于所述缸盖侧面,出水口组设置于缸盖侧面,水槽内部设置有螺旋环,使冷却水在水槽内充分流动,防止出现死水区。冷却水与中心高温区的换热面积增大,将中心高温区域的热量导出,降低缸盖及排气温度。(The application relates to a diaphragm compressor cylinder cover cooling structure. The mode of tradition making water course is from the cylinder cap lateral wall towards the inside punching of cylinder cap, and the water course is very little through the heat transfer area of central high temperature zone, can't in time take away a large amount of heats in central high temperature zone, and the cooling effect is not obvious. The application provides a diaphragm compressor cylinder cap cooling structure, including the cylinder cap, be provided with cooling trough on the cylinder cap terminal surface, cooling trough set up in inside the cylinder cap, be provided with the exhaust subassembly on the cylinder cap, cooling trough surrounds the exhaust subassembly, cooling trough link up with water inlet group mutually, and cooling trough links up with delivery port group mutually, and water inlet group sets up in the cylinder cap side, delivery port group set up in the cylinder cap side, and the inside spiral ring that is provided with of basin makes the cooling water fully flow in the basin, prevents to appear the stagnant water district. The heat exchange area between the cooling water and the central high-temperature area is increased, the heat of the central high-temperature area is led out, and the temperature of a cylinder cover and the exhaust temperature are reduced.)

1. The utility model provides a diaphragm compressor cylinder cap cooling structure which characterized in that: including cylinder cap (1), be provided with cooling trough (2) on cylinder cap (1) terminal surface, cooling trough (2) set up in inside cylinder cap (1), be provided with the exhaust subassembly on cylinder cap (1) terminal surface, cooling trough (2) surround the exhaust subassembly, cooling trough (2) link up with water inlet group mutually, cooling trough (2) link up with delivery port group mutually, water inlet group sets up in cylinder cap (1) side, delivery port group sets up in cylinder cap (1) side.

2. The diaphragm compressor head cooling structure of claim 1, wherein: the water inlet group is arranged below the water outlet group; the water inlet group comprises two or more water inlets, and the water outlet group comprises two or more water outlets.

3. The diaphragm compressor head cooling structure of claim 1, wherein: the cooling water tank (2) is connected with the end face of the cylinder cover (1) through a water tank seal (7), and the water tank seal (7) is used for sealing an opening of the end face of the cylinder cover (1) of the cooling water tank (2).

4. The diaphragm compressor head cooling structure of claim 3, wherein: the water tank seal (7) is connected with the cylinder cover (1) through screws or welded.

5. The diaphragm compressor head cooling structure of claim 3, wherein: the exhaust assembly comprises an exhaust connecting pipe (9), a valve pressing cover (10) is arranged above the exhaust connecting pipe (9), the valve pressing cover (10) is arranged on the cylinder cover (1), and the valve pressing cover (10) is arranged above the water tank seal (7);

The exhaust connecting pipe (9) is connected with an exhaust valve (11), and the exhaust valve (11) is arranged below the exhaust connecting pipe (9).

6. The cooling structure of the cylinder cover of the diaphragm compressor as claimed in any one of claims 1 to 5, wherein: the cooling water tank (2) is annular.

7. The diaphragm compressor head cooling structure of claim 6, wherein: the cooling water tank (2) is internally provided with a spiral ring (12), the spiral ring (12) divides the cooling water tank (2) into two or more spiral ascending spaces, and cooling water flows along the spiral spaces.

8. The diaphragm compressor head cooling structure of claim 6, wherein: the water inlet group comprises a first water inlet (3) and a second water inlet (5), the water outlet group comprises a first water outlet (4) and a second water outlet (6), one side of the cooling water tank (2) is communicated with the first water inlet (3), one side of the cooling water tank (2) is communicated with the first water outlet (4), and the first water inlet (3) is positioned below the first water outlet (4); the other side of the cooling water tank (2) is communicated with the second water inlet (5), the cooling water tank (2) is communicated with the second water outlet (6), and the second water inlet (5) is positioned below the second water outlet (6).

Technical Field

The application belongs to the technical field of compressors, and particularly relates to a cooling structure for a cylinder cover of a diaphragm compressor.

Background

the diaphragm compressor is a positive displacement compressor, and is widely applied to the petrochemical field such as a hydrogen station and the like for compressing and conveying various high-purity gases, precious and rare gases, toxic and harmful gases and corrosive gases due to good sealing performance, wide pressure range and large compression ratio. In the diaphragm compressor, working oil in an oil cavity of a cylinder is pushed through a piston, and then a diaphragm is pushed to reciprocate in the diaphragm cavity, so that the working volume of an air cavity is changed, and a leakage-free periodic working process is realized under the coordination of an air suction valve and an air discharge valve.

Because of the diaphragm compressor is generally bigger than, especially high-pressure diaphragm compressor cylinder cap is thicker again, and the high pressure ratio leads to exhaust temperature higher, and the cylinder cap is thicker, and the surface heat transfer through the cylinder cap is difficult in time to derive the compression heat in the membrane chamber. Therefore, the integral temperature of the cylinder cover is high, so that the thermal stress of the cylinder cover cannot be ignored, the pressure valve cover and the exhaust flange bolt are loosened, and the operation safety of the system is endangered. The temperature in the diaphragm cavity of the diaphragm compressor is high, the temperature of hydraulic oil can be increased through heat conduction of the diaphragm, the aging of the hydraulic oil can be accelerated due to the overhigh temperature of the hydraulic oil, the lubricating conditions of all moving parts can be severe after the hydraulic oil is polluted, and the abrasion of all moving parts can be accelerated. The increase of the temperature of the hydraulic oil can also cause the increase of the air separation pressure and the saturated vapor pressure in the hydraulic oil, so that the cavitation phenomenon is easier to occur, and the pressure fluctuation of a hydraulic system occurs.

the high temperature zone of diaphragm compressor mainly concentrates on near regional discharge valve in center, and have carminative high temperature air current to pass through always, heat flux density is also great, current cooling scheme is mostly to beat the cooling water course in the cylinder cap inside, it cools off to lead to water or oil, cool off the cylinder cap through cooling water and the inside water course wall convection heat transfer of cylinder cap, but the mode of tradition beating the water course is mostly to punch towards the cylinder cap inside from the cylinder cap lateral wall, the area of contact of water course and middle high temperature zone is very little, the heat of leading out through the cooling water is very little, can't in time take away the regional a large amount of heats in center high temperature, near discharge valve temperature is still very high, the cooling effect.

Disclosure of Invention

1. Technical problem to be solved

The high temperature zone based on diaphragm compressor mainly concentrates on near regional discharge valve in center, and have carminative high temperature air current to pass through always, heat flux density is also great, present cooling scheme is many to beat the cooling water course in the cylinder cap inside, logical water or oil cools off, cool off the cylinder cap through cooling water and the inside water course wall convection heat transfer of cylinder cap, but the mode of tradition water course of beating is from the cylinder cap lateral wall towards the inside punching of cylinder cap, the water course is very little with the area of contact of middle high temperature district, the heat of leading out through the cooling water is very little, can't in time take away central high temperature region's a large amount of heats, near discharge valve temperature is still very high, the obscure problem of cooling effect, the application provides a diaphragm compressor cylinder cap cooling structure.

2. technical scheme

in order to reach foretell purpose, this application provides a diaphragm compressor cylinder cap cooling structure, including the cylinder cap, be provided with the cooling trough on the cylinder cap terminal surface, the cooling trough set up in inside the cylinder cap, be provided with the exhaust subassembly on the cylinder cap terminal surface, the cooling trough surrounds the exhaust subassembly, the cooling trough link up with water inlet group mutually, the cooling trough link up with delivery port group mutually, the water inlet group sets up in the cylinder cap side, the delivery port group sets up in the cylinder cap side.

Another embodiment provided by the present application is: the water inlet group is arranged below the water outlet group; the water inlet group comprises two or more water inlets, and the water outlet group comprises two or more water outlets.

Another embodiment provided by the present application is: the cooling water tank is connected with the end face of the cylinder cover through a water tank seal, and the water tank seal is used for sealing an opening of the end face of the cylinder cover of the cooling water tank.

Another embodiment provided by the present application is: the water tank seal is connected with the cylinder cover through screws or welded.

Another embodiment provided by the present application is: the exhaust assembly is provided with an exhaust connecting pipe, a pressure valve cover is arranged above the exhaust connecting pipe, the pressure valve cover is arranged on the cylinder cover, and the pressure valve cover is arranged above the water tank seal;

The exhaust connecting pipe is connected with an exhaust valve, and the exhaust valve is arranged below the exhaust connecting pipe.

Another embodiment provided by the present application is: the cooling water tank is annular.

Another embodiment provided by the present application is: two or more spiral rings are arranged in the cooling water tank, the spiral rings divide the cooling water tank into two or more spiral ascending spaces, and cooling water flows along the spiral spaces.

Another embodiment provided by the present application is: the water inlet group comprises a first water inlet and a second water inlet, the water outlet group comprises a first water outlet and a second water outlet, one side of the cooling water tank is communicated with the first water inlet, one side of the cooling water tank is communicated with the first water outlet, and the first water inlet is positioned below the first water outlet; the other side of the cooling water tank is communicated with the second water inlet, the cooling water tank is communicated with the second water outlet, and the second water inlet is positioned below the second water outlet.

3. Advantageous effects

Compared with the prior art, the diaphragm compressor cylinder cap cooling structure that this application provided has:

The application provides a diaphragm compressor cylinder cap cooling structure, mainly concentrate on near central discharge valve's characteristics to diaphragm compressor high temperature, change the tradition and beat the method of cooling water course from the side wall face, process the cooling water tank around the exhaust hole from the cylinder cap terminal surface and surround discharge valve and exhaust takeover, lead to cooling water in this cooling water tank, the heat transfer area increase of cooling water and central high temperature zone, derive the heat in central high temperature zone, reduce cylinder cap and exhaust temperature.

The application provides a diaphragm compressor cylinder cap cooling structure, from cylinder cap terminal surface processing round annular cooling trough around the exhaust hole with discharge valve and exhaust take over the encirclement, lead to the cooling water in this basin, the heat transfer area increase of cooling water and central high temperature zone is derived the heat in central high temperature zone, reduces cylinder cap and exhaust temperature.

The application provides a diaphragm compressor cylinder cap cooling structure can reduce the cylinder cap temperature, reduces the influence of thermal stress, reduces exhaust temperature simultaneously. The high-temperature area of the diaphragm compressor is mainly concentrated around the exhaust valve, the heat of the high-temperature area is led out, and the reduction of the temperature of the cylinder cover and the diaphragm cavity has important significance for the safe operation of the diaphragm compressor.

The traditional structure processes the water course from the cylinder cap lateral wall face, needs to calculate the angle of each water course, and processing is complicated. According to the diaphragm compressor cylinder cover cooling structure, the water tank is machined from the end face of the cylinder cover, the structure is simple, and machining is easy;

Compare with traditional water course, this patent design basin increases with the heat transfer area of cylinder cap central high temperature area, and the cooling effect is good.

The application provides a diaphragm compressor cylinder cap cooling structure arranges the spiral ring at the annular water tank, separates into two or a plurality of spiral rising spaces with the basin, and the cooling water flows along spiral space, has avoided the appearance of stagnant water district in the basin, and the cooling water is more abundant with the heat transfer of cylinder cap.

drawings

FIG. 1 is a schematic view of a diaphragm compressor head construction of the present application;

FIG. 2 is a schematic plan sectional view of the inlet/outlet assembly of the diaphragm compressor of the present application;

FIG. 3 is a schematic view of the water flow within the cooling water bath of the present application;

FIG. 4 is a three-dimensional schematic view of a partial structure of a cooling water tank according to the present application;

In the figure: 1-cylinder cover, 2-cooling water tank, 3-first water inlet, 4-first water outlet, 5-second water inlet, 6-second water outlet, 7-water tank seal, 8-exhaust hole, 9-exhaust connecting pipe, 10-valve cover, 11-exhaust valve, 12-spiral ring, 13-cylinder body, 14-diaphragm, 15-air inlet valve, 16-oil distribution disc, 17-stud, 18-bolt and 19-air inlet connecting pipe.

Detailed Description

Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings, and it will be apparent to those skilled in the art from this detailed description that the present application can be practiced. Features from different embodiments may be combined to yield new embodiments, or certain features may be substituted for certain embodiments to yield yet further preferred embodiments, without departing from the principles of the present application.

Referring to fig. 1 ~ 4, the application provides a diaphragm compressor cylinder cap cooling structure, including cylinder cap 1, be provided with cooling trough 2 on the 1 terminal surface of cylinder cap, cooling trough 2 set up in inside the cylinder cap 1, be provided with the exhaust subassembly on the 1 terminal surface of cylinder cap, cooling trough 2 surrounds the exhaust subassembly, cooling trough 2 link up with water inlet group mutually, cooling trough 2 link up with delivery port group mutually, the water inlet group sets up in 1 side of cylinder cap, the delivery port group sets up in 1 side of cylinder cap.

As shown in fig. 1: an oil distribution disc 16 is detachably connected between the cylinder cover 1 and the cylinder body 13, a diaphragm 14 is arranged above the oil distribution disc 16, and the cylinder cover 1, the diaphragm 14, the oil distribution disc 16 and the cylinder body 13 are tightly connected through a stud 17 and a bolt 18. An air cavity is formed between the cylinder cover 1 and the diaphragm 14, and an oil cavity is formed between the cylinder body 13 and the diaphragm 14. The cylinder cover 1 is provided with an air inlet valve 15 and an air outlet valve 11, and the air inlet valve and the air outlet valve are pressed on the valve step by the pressure valve cover 10 through the pressure air inlet connecting pipe 19 and the pressure air outlet connecting pipe 9.

When the compressor operates, the oil pressure change in the oil cavity pushes the diaphragm 14 to deform, the gas in the gas cavity is compressed, and the compressed high-temperature gas is discharged through the exhaust valve 11 and the exhaust connecting pipe 9 in sequence, so that the ambient temperature of the exhaust valve 11 through which the high-temperature gas flows is higher, and the high-temperature region is the central high-temperature region of the cylinder cover 1.

As shown in fig. 2: and a circle of cooling water tank 2 is processed around the exhaust hole from the end surface of the cylinder cover 1 to surround the exhaust valve 11 and the exhaust connecting pipe 9. On the premise of ensuring the strength of the cylinder cover 1, the depth of the cooling water tank 2 is made as large as possible, and the contact area between the cooling water and a high-temperature area around the exhaust valve 11 is made as large as possible so as to strengthen heat exchange.

Cooling water enters from the water inlet group, passes through the cold water tank 2 and then is discharged from the water outlet group, and heat is taken away, so that heat exchange is realized.

Furthermore, the water inlet group is arranged below the water outlet group; the water inlet group comprises two or more water inlets, and the water outlet group comprises two or more water outlets.

In order to make the water flow disturbance in the water tank more sufficient, two or more water inlets and outlets can be arranged on the planes of the water inlet group and the water outlet group, and when two or more water inlets and outlets are arranged, the heat exchange between water and a cylinder cover is fully carried out.

Furthermore, the cooling water tank 2 is connected with the end face of the cylinder cover 1 through a water tank seal 7, and the water tank seal 7 is used for sealing the opening of the cooling water tank 2 on the end face of the cylinder cover 1.

Further, the water tank seal 7 and the cylinder cover 1 are connected by screws or welded.

Of course, the connection mode of the water tank seal 7 and the cylinder cover 1 can be a movable connection or other fixed connection, as long as the requirement that the water tank seal 7 seals the cover to cool the water tank 2 is met.

further, the exhaust assembly comprises an exhaust connecting pipe 9, a valve pressing cover 10 is arranged above the exhaust connecting pipe 9, the valve pressing cover 10 is arranged on the cylinder cover 1, and the valve pressing cover 10 is arranged above the water tank seal 7;

The exhaust connecting pipe 9 is connected with an exhaust valve 11, and the exhaust valve 11 is arranged below the exhaust connecting pipe 9.

As shown in fig. 3, the cooling water tank 2 surrounds the exhaust assembly and water flows are interlaced around the exhaust assembly. The exhaust valve 11 and the exhaust connection 9 enclose an exhaust opening 8, the exhaust opening 8 not being an actual component.

Further, the cooling water tank 2 is annular.

The exhaust valve 11 and the exhaust connecting pipe 9 are cylinders, heat is mainly transferred to the periphery by high-temperature airflow passing through the exhaust valve 11 and the exhaust connecting pipe 9, the exhaust valve 11 and the exhaust connecting pipe 9 are surrounded by the annular water tank, the heat exchange area between cooling water and a high-temperature area can be increased to the maximum extent, and the annular water tank is easy to process.

Further, a spiral ring 12 is arranged in the cooling water tank 2, the spiral ring 12 divides the cooling water tank 2 into two or more spiral ascending spaces, and cooling water flows along the spiral spaces.

The spiral ring 12 can make the cooling water flow more sufficiently in the cooling water tank 2, so that the occurrence of a dead water area is avoided, and the heat exchange is more sufficient.

Further, the water inlet group comprises a first water inlet 3 and a second water inlet 5, the water outlet group comprises a first water outlet 4 and a second water outlet 6, one side of the cooling water tank 2 is communicated with the first water inlet 3, one side of the cooling water tank 2 is communicated with the first water outlet 4, and the first water inlet 3 is positioned below the first water outlet 4; the other side of the cooling water tank 2 is communicated with the second water inlet 5, the cooling water tank 2 is communicated with the second water outlet 6, and the second water inlet 5 is positioned below the second water outlet 6.

As shown in fig. 2, the first water inlet 3, the first water outlet 4, the second water outlet 6 and the second water inlet 5 are machined from the side surface of the cylinder head 1, the water inlet is arranged at the lower part, the water outlet is arranged at the upper part, cooling water enters the cooling water tank 2 through the first water inlet 3 and the second water inlet 5, the cooling water absorbs heat from the cylinder head 1 through heat convection with the wall surface of the cooling water tank 2, and then is discharged through the first water outlet 4 and the second water outlet 6, so that cooling of the cylinder head 1 and exhaust gas is realized. For making the rivers disturbance is more abundant in the cooling trough 2, can arrange twice or multichannel inlet and outlet hole at water inlet and delivery port plane, and add in the cooling trough 2 spiral ring 12, when two or more inlet and outlet ports, can arrange twice or multichannel spiral ring 12, will cooling trough 2 cuts apart into two or more spiral ground spaces that rise, makes rivers flow along spiral space, thereby makes the stagnant water district can not appear in the cooling trough 2, make water with the heat transfer of cylinder cap 1 fully carries out, and the cooling water is in flow in the cooling trough 2 is as shown in fig. 3.

The application provides a diaphragm compressor cylinder cap cooling structure, mainly concentrate on near central discharge valve's characteristics to diaphragm compressor high temperature, change the tradition and beat the method of cooling water course from the side wall face, process the cooling water tank around the exhaust hole from the cylinder cap terminal surface and surround discharge valve and exhaust takeover, lead to cooling water in this basin, the heat transfer area increase of cooling water and central high temperature zone, derive the heat in central high temperature zone, reduce cylinder cap and exhaust temperature.

The application provides a diaphragm compressor cylinder cap cooling structure can reduce the cylinder cap temperature, reduces the influence of thermal stress, reduces exhaust temperature simultaneously. The high-temperature area of the diaphragm compressor is mainly concentrated around the exhaust valve, the heat of the high-temperature area is led out, and the reduction of the temperature of the cylinder cover and the diaphragm cavity has important significance for the safe operation of the diaphragm compressor.

The traditional structure processes the water course from the cylinder cap lateral wall face, needs to calculate the angle of each water course, and processing is complicated. According to the diaphragm compressor cylinder cover cooling structure, the water tank is machined from the end face of the cylinder cover, the structure is simple, and machining is easy;

compare with traditional water course, this patent design basin increases with the heat transfer area of cylinder cap central high temperature area, and the cooling effect is good.

The application provides a diaphragm compressor cylinder cap cooling structure arranges the spiral ring at the annular water tank, separates into two or a plurality of spiral rising spaces with the basin, and the cooling water flows along spiral space, has avoided the appearance of stagnant water district in the basin, and the cooling water is more abundant with the heat transfer of cylinder cap.

Although the present application has been described above with reference to specific embodiments, those skilled in the art will recognize that many changes may be made in the configuration and details of the present application within the principles and scope of the present application. The scope of protection of the application is determined by the appended claims, and all changes that come within the meaning and range of equivalency of the technical features are intended to be embraced therein.