CN212537121U - Air type pulse buffer - Google Patents

Abstract

The utility model provides an air formula pulse buffer, including the buffer tank body, the internal cushion chamber that is equipped with of buffer tank, its characterized in that: the buffer tank body comprises an upper tank body and a lower tank body which are sleeved with each other, the lower tank body is provided with an inlet, the buffer tank further comprises a pressure gauge for measuring the pressure in the buffer cavity, the pressure gauge further comprises a meter body and a pressure-bearing shell arranged on the upper tank body, a diaphragm is arranged in the pressure-bearing shell, the diaphragm divides an inner cavity of the pressure-bearing shell into a first cavity communicated with the buffer cavity and a second cavity communicated with the meter body, and a hydraulic medium is filled in the second cavity; the diaphragm comprises a rubber layer facing the second cavity and an anticorrosive layer facing the first cavity. The utility model has the advantages of simple structure, the pressure measurement is sensitive, long service life and maintenance cost are low.

Description

Air type pulse buffer

Technical Field

The utility model relates to a pulse buffer field, concretely relates to air formula pulse buffer.

Background

The pulse buffer smoothes the pipeline pulsation through the change of the air chamber volume, thereby reducing the damage of a water hammer to a system, reducing the peak value of flow velocity fluctuation, protecting a pipeline and a valve joint from the impact of pressure fluctuation and reducing the energy consumption of the system.

The working principle is as follows: according to Boyle's law, gaseous volume is inversely proportional to gaseous pressure, smoothes the pipeline pulse through the volume that changes gas, has sinusoidal system effect to the velocity of flow, during the crest: the air chamber volume diminishes, and the pulsation damper absorbs unnecessary flow liquid, during the trough: the volume of the air chamber is increased, and the stored liquid is released, so that the effect of smooth pulsation is achieved.

The existing pulse buffer is often made of metal materials, needs to be connected through a special joint during installation, is internally provided with a diaphragm, utilizes the diaphragm to separate a pulse medium and a pressure measuring side of a pressure gauge, and improves the production cost of the pulse buffer.

SUMMERY OF THE UTILITY MODEL

Based on the problem, the utility model aims to provide a simple structure, the pressure measurement is sensitive, long service life and maintenance cost low air formula pulse buffer.

Aiming at the problems, the following technical scheme is provided: an air type pulse buffer comprises a buffer tank body, wherein a buffer cavity is arranged in the buffer tank body, the buffer tank body comprises an upper tank body and a lower tank body which are sleeved with each other, an inlet is formed in the lower tank body, the air type pulse buffer also comprises a pressure gauge for measuring the pressure in the buffer cavity, the pressure gauge also comprises a gauge body and a pressure-bearing shell arranged on the upper tank body, a diaphragm is arranged in the pressure-bearing shell, the diaphragm divides the inner cavity of the pressure-bearing shell into a first cavity communicated with the buffer cavity and a second cavity communicated with the gauge body, and a hydraulic medium is filled in the second cavity; the diaphragm comprises a rubber layer facing the second cavity and an anticorrosive layer facing the first cavity.

Among the above-mentioned structure, cancel the internal diaphragm of buffer tank, change it into the diaphragm that is located the pressure-bearing shell, thereby reduce the deflection of diaphragm, reduce the too big emergence of diaphragm deformation when buffering of current diaphragm buffer and tear or damaged possibility, the diaphragm that is located the pressure-bearing shell can effectively completely cut off the pipeline medium, avoid the medium to get into the table body and influence table body precision or corrode and block up the table body, the diaphragm passes through the rubber layer and the anticorrosive coating constitutes, the compliance of diaphragm can effectively be guaranteed on the rubber layer, the anticorrosive coating can effectively improve corrosion resistance, prolonged life when having guaranteed measurement accuracy.

The utility model discloses further set up to, the pressure-bearing casing includes the upper cover, the upper cover below is equipped with the lower cover, the diaphragm is located between upper cover and the lower cover.

In the structure, the upper end surface groove is formed in the position, in which the upper cover is in contact with the outer edge of the diaphragm, the lower end surface groove is formed in the position, in which the lower cover is in contact with the outer edge of the diaphragm, the positioning ring is arranged on the outer edge of the diaphragm, and the positioning ring is clamped between the upper end surface groove and the lower end surface groove when the upper cover and the lower cover are combined to prevent the diaphragm from contracting and separating.

The utility model discloses further set up as, through threaded connection with the diaphragm clamp between the two between upper cover and the lower cover.

In the structure, the upper cover and the lower cover are connected through threads so as to clamp the diaphragm.

The utility model discloses further set up to, on cover be equipped with second cavity intercommunication for connect the table body connector of the table body.

In the structure, the meter body connecting opening is in threaded fit connection with the meter body.

The utility model is further arranged that the lower cover is provided with a tank body connecting port communicated with the first cavity; the tank body connecting port is in butt joint with the upper tank body.

In the structure, the tank body connecting port and the upper tank body can be butted in a threaded or adhesive mode.

The utility model discloses further set up to, the anticorrosive coating attaches to the surface of rubber layer towards first cavity one side for the PTFE material.

In the structure, the anticorrosive coating made of PTFE has the advantages of good corrosion resistance and high surface strength, is combined with the rubber layer, ensures the flexibility of the diaphragm under the condition of not too thick thickness, and ensures the corrosion resistance and the strength.

The utility model discloses further set up as, be equipped with a plurality of concentric each other on the anticorrosive coating, follow the strengthening rib of the concentric range of diaphragm radial direction interval.

In the structure, the diaphragm which can be made by the annular reinforcing ribs has longer service life, the tensile strength is improved, the diaphragm has higher telescopic performance, the stress of the diaphragm is more balanced, and the accuracy of pressure transmission is greatly improved.

The utility model discloses further set up to, the import is equipped with down the interface by the order.

In the above structure, the lower interface is used for butting with the pipeline.

The utility model has the advantages that: with the internal diaphragm cancellation of buffer tank, it changes into the diaphragm that is located the pressure-bearing shell, thereby reduce the deflection of diaphragm, reduce the too big emergence of diaphragm deformation when buffering of current diaphragm buffer and tear or damaged possibility, the diaphragm that is located the pressure-bearing shell can effectively completely cut off the medium in the pipeline, avoid the medium to get into table body influence table body precision or corrode and block up the table body, the diaphragm passes through the rubber layer and the anticorrosive coating constitutes, the compliance of diaphragm can effectively be guaranteed on the rubber layer, the anticorrosive coating can effectively improve corrosion resistance, prolonged life when having guaranteed measurement accuracy.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is the utility model discloses a buffer tank body cuts open structure schematic diagram entirely.

Fig. 3 is the utility model discloses a pressure-bearing shell is the structural schematic diagram of cutting open entirely.

Fig. 4 is the utility model discloses a pressure-bearing shell divides open explosion structure sketch map entirely.

Fig. 5 is an enlarged schematic view of a portion a of fig. 3 according to the present invention.

The reference numbers in the figures mean: 10-a buffer tank body; 11-a buffer chamber; 12-putting the tank body; 13-lower tank body; 131-an inlet; 14-lower interface by order; 20-pressure gauge; 21-watch body; 22-a pressure-bearing housing; 221-a membrane; 2211-rubber layer; 2212-anticorrosive layer; 22121-reinforcing ribs; 2213-a positioning ring; 222 — a first cavity; 223-a second cavity; 23-upper cover; 231-upper end surface groove; 232-meter body connecting port; 24-a lower cover; 241-lower end surface groove; 242-tank connection port.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 to 5, the air type pulse buffer shown in fig. 1 to 5 includes a buffer tank 10, a buffer chamber 11 is provided in the buffer tank 10, the buffer tank 10 includes an upper tank 12 and a lower tank 13 which are connected to each other by gluing after being sleeved, the lower tank 13 is provided with an inlet 131, the air type pulse buffer further includes a pressure gauge 20 for measuring the pressure in the buffer chamber 11, the pressure gauge 20 further includes a gauge body 21 and a pressure-bearing housing 22 provided on the upper tank 12, a diaphragm 221 is provided in the pressure-bearing housing 22, the diaphragm 221 divides an inner cavity of the pressure-bearing housing 22 into a first cavity 222 communicated with the buffer chamber 11 and a second cavity 223 communicated with the gauge body 21, and the second cavity 223 is filled with a hydraulic medium; the membrane 221 includes a rubber layer 2211 facing the second cavity 223 and an anti-corrosion layer 2212 facing the first cavity 222.

In the structure, the diaphragm in the buffer tank body 10 is eliminated and replaced by the diaphragm 221 in the pressure-bearing shell 22, the volume of the pressure-bearing shell 22 is far smaller than that of the buffer tank body 10, so that the deformation of the diaphragm 221 is reduced, the possibility that the diaphragm is too large in deformation and is torn or damaged during buffering of the existing diaphragm type buffer is reduced, the diaphragm 221 in the pressure-bearing shell 22 can effectively isolate media in a pipeline, the condition that the media enter the surface body 21 to influence the precision of the surface body 21 or corrode and block the surface body 21 is avoided, the diaphragm 221 is composed of the rubber layer 2211 and the anticorrosive layer 2212, the rubber layer 2211 can effectively guarantee the flexibility of the diaphragm 221, the anticorrosive layer 2212 can effectively improve the corrosion resistance, and the service life is prolonged while the measurement precision is guaranteed.

In this embodiment, the pressure-bearing housing 22 includes an upper cover 23, a lower cover 24 is disposed below the upper cover 23, and the diaphragm 221 is located between the upper cover 23 and the lower cover 24.

In the above structure, the upper end surface groove 231 is disposed at the position where the upper cover 23 contacts the outer edge of the membrane 221, the lower end surface groove 241 is disposed at the position where the lower cover 24 contacts the outer edge of the membrane 221, the outer edge of the membrane 221 is disposed with the positioning ring 2213, and the positioning ring 2213 is clamped between the upper end surface groove 231 and the lower end surface groove 241 to prevent the membrane 221 from shrinking and separating when the upper cover 23 and the lower cover 24 are combined.

In this embodiment, the upper cover 23 and the lower cover 24 are connected by a screw to sandwich the membrane 221 therebetween.

In the above structure, the upper cover 23 and the lower cover 24 are screwed to clamp the diaphragm 221, and the upper cover 23 and the lower cover 24 are sealed while fixing the diaphragm 221.

In this embodiment, the upper cover 23 is provided with a meter body connection port 232 which is communicated with the second cavity 223 and is used for connecting the meter body 21.

In the above configuration, the watch body connection port 232 is connected to the watch body 21 by screw fitting.

In this embodiment, the lower cover 24 is provided with a tank connection port 242 communicated with the first cavity 222; the tank connecting port 242 is in butt joint with the upper tank 12.

In the above structure, the tank connection port 242 and the upper tank 12 can be connected by screwing or gluing.

In this embodiment, the anti-corrosion layer 2212 is made of PTFE and is attached to the surface of the rubber layer 2211 facing the first cavity 222.

In the above structure, the PTFE anticorrosive coating has the advantages of good corrosion resistance and high surface strength, and when combined with the rubber layer 2211, the PTFE anticorrosive coating ensures the flexibility of the membrane 221 and ensures the corrosion resistance and strength without excessively high thickness.

In this embodiment, the corrosion-resistant layer 2212 is provided with a plurality of ribs 22121 which are concentric with each other and concentrically arranged at intervals along the radial direction of the membrane 221.

In the above structure, the annular reinforcing rib 22121 can make the diaphragm 221 have a longer service life, the tensile strength is improved, the expansion and contraction performance of the diaphragm 221 is higher, the stress of the diaphragm 221 is more balanced, and the accuracy of pressure transmission is greatly improved.

In this embodiment, the inlet 131 is provided with a lower interface slave 14.

In the above structure, the lower port 14 is used for interfacing with the pipeline.

The utility model has the advantages that: the diaphragm in the buffer tank body 10 is eliminated and replaced by the diaphragm 221 in the pressure-bearing shell 22, the volume of the pressure-bearing shell 22 is far smaller than that of the buffer tank body 10, so that the deformation of the diaphragm 221 is reduced, the possibility that the diaphragm is too large to deform and tear or be damaged during buffering of the existing diaphragm type buffer is reduced, the diaphragm 221 in the pressure-bearing shell 22 can effectively isolate media in a pipeline, the condition that the media enter the surface body 21 to influence the precision of the surface body 21 or corrode and block the surface body 21 is avoided, the diaphragm 221 is composed of the rubber layer 2211 and the anticorrosive layer 2212, the rubber layer 2211 can effectively guarantee the flexibility of the diaphragm 221, the anticorrosive layer 2212 can effectively improve the corrosion resistance, the measuring precision is guaranteed, and the service life is prolonged.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.

Claims (8)

1. The utility model provides an air formula pulse buffer, includes the surge tank body, be equipped with cushion chamber, its characterized in that in the surge tank body: the buffer tank body comprises an upper tank body and a lower tank body which are sleeved with each other, the lower tank body is provided with an inlet, the buffer tank further comprises a pressure gauge for measuring the pressure in the buffer cavity, the pressure gauge further comprises a meter body and a pressure-bearing shell arranged on the upper tank body, a diaphragm is arranged in the pressure-bearing shell, the diaphragm divides an inner cavity of the pressure-bearing shell into a first cavity communicated with the buffer cavity and a second cavity communicated with the meter body, and a hydraulic medium is filled in the second cavity; the diaphragm comprises a rubber layer facing the second cavity and an anticorrosive layer facing the first cavity.

2. An air-based pulse buffer as defined in claim 1, wherein: the pressure-bearing shell comprises an upper cover, a lower cover is arranged below the upper cover, and the diaphragm is located between the upper cover and the lower cover.

3. An air-based pulse buffer as defined in claim 2, wherein: the upper cover and the lower cover are connected through threads to clamp the membrane between the upper cover and the lower cover.

4. An air-based pulse buffer as defined in claim 2, wherein: the upper cover is provided with a meter body connecting port which is communicated with the second cavity and is used for connecting the meter body.

5. An air-based pulse buffer as defined in claim 2, wherein: the lower cover is provided with a tank body connecting port communicated with the first cavity; the tank body connecting port is in butt joint with the upper tank body.

6. An air-based pulse buffer as defined in claim 1, wherein: the anticorrosive coating is the surface that PTFE material attaches to the rubber layer and faces first cavity one side.

7. An air-based pulse buffer according to claim 1 or 6, wherein: the anticorrosive coating is provided with a plurality of reinforcing ribs which are concentric with each other and are concentrically arranged at intervals along the radial direction of the diaphragm.

8. An air-based pulse buffer as defined in claim 1, wherein: the inlet is provided with a lower interface order.

Images